DOC AIRBUS | TSM A320FGeneral Troubleshooting Guidelines for Additional Troubleshooting Information
TASK 71-00-00-810-834-A
General Troubleshooting Guidelines for Additional Troubleshooting Information
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 71-00-00-710-099-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:40:47 UTC
General Troubleshooting Guidelines for Additional Troubleshooting Information
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 71-00-00-810-835-A | Component and Harness Intermittent Troubleshooting Procedure for Guidance Troubleshooting Intermittent Faults |
| TSM TASK 71-00-00-810-862-A | Engine Surge (Stall) Detected |
| TSM TASK 71-00-00-810-864-A | EGT Over Limit |
| TSM TASK 73-00-00-810-933-A | Engine Position Discrete 1 Channel A |
| TSM TASK 73-00-00-810-934-A | Engine Position Discrete 2 Channel A |
| TSM TASK 73-00-00-810-935-A | Engine Position Discrete 2 Channel B |
| TSM TASK 73-00-00-810-937-A | Engine Position Discrete 1 Channel B |
| TSM TASK 73-00-00-810-939-A | TCM Protection on Ground Never Armed |
| TSM TASK 73-11-00-810-812-A | Fuel Filter Blockage and Bypass event |
| TSM TASK 73-11-00-810-819-A | HPSOV Mechanically Stuck |
| TSM TASK 73-11-00-810-822-A | Fuel Filter Assembly Blocage of Filter Element |
| TSM TASK 73-11-00-810-841-A | TCM Cutback Accommodation Activated in Flare only |
| TSM TASK 73-11-00-810-842-A | TCM Cutback Accommodation Activated |
| TSM TASK 73-11-00-810-843-A | TCM Cutback Accommodation Activated in Flare or Take Off Phase (Control System Fault Alert) |
| TSM TASK 73-21-00-810-870-A | EEC Internal Failure Level B |
| TSM TASK 73-21-00-810-878-A | EEC Internal Failure Level A NO GO |
| TSM TASK 73-21-00-810-912-A | Aircraft 28 VDC Bus Fail Channel A |
| TSM TASK 73-21-00-810-913-A | Aircraft 28 VDC Bus Fail Channel B |
| TSM TASK 73-25-00-810-A34-A | TR ICV 28 VDC Not Available on Channel A |
| TSM TASK 73-25-00-810-A35-A | TR ICV 28 VDC Not Available on Channel B |
| TSM TASK 73-25-00-810-A38-A | EEC/ICV Wraparound Failure on Channel A |
| TSM TASK 73-25-00-810-A39-A | EEC/ICV Wraparound Failure on Channel B |
| TSM TASK 73-25-00-810-A40-A | EEC/DCV Wraparound Failure on Channel A |
| TSM TASK 73-25-00-810-A41-A | EEC/DCV Wraparound Failure on Channel B |
| TSM TASK 73-25-00-810-B43-A | TR ICV 28 VDC not Available on Channel A and B |
| TSM TASK 74-00-00-810-830-A | Ignition Failure/Engine Failed to Light during Start |
| TSM TASK 74-00-00-810-831-A | Ignition/Exciter #1 Failure |
| TSM TASK 74-00-00-810-832-A | Ignition/Exciter #2 Failure |
| TSM TASK 75-26-00-810-819-A | Buffer Air Shutoff Valve Fail Open |
| TSM TASK 77-11-00-810-808-A | N1 Sensor Electrical Failure Channel B |
| TSM TASK 77-11-00-810-809-A | N1 Sensor Electrical Failure Channel A |
| TSM TASK 77-31-00-810-801-A | PHMU Internal Failure |
| TSM TASK 77-32-00-810-824-A | D-Flange Monitoring Failure |
| TSM TASK 77-32-00-810-825-A | P-Flange Monitoring Failure |
| TSM TASK 78-31-00-810-982-A | ICV Failed Closed |
| TSM TASK 78-31-00-810-983-A | DCV Failed Deployed |
| TSM TASK 78-31-00-810-993-A | Inadvertent Stow |
| TSM TASK 79-21-00-810-822-A | Journal Oil Shuttle Valve Stuck in Main Position |
| TSM TASK 79-21-00-810-830-A | Engine Fuel/Oil Heat Exchanger (FOHE) Bypass Valve Position Error Track Check in Channel B |
| TSM TASK 79-32-00-810-860-A | Main Oil Temperature Sensor Electrical Failure on Channel A and B |
| TSM TASK 79-33-00-810-845-A | High Oil Pressure |
| AMM 73-21-00-200-805 | Visual Examination of the FADEC System Wiring Harnesses (Ground Harness Check) |
| AMM 73-21-00-710-806 | Test No.7 - EEC Operation Test (Self Test) |
| AMM 73-21-00-710-807 | Test No.6 - EEC Operation Test (Idle Test) |
| AMM 73-21-00-710-808 | Hydraulic-Pump Depressurization Test with MCDU |
| AMM 73-21-00-710-809 | Test No.15 - Operation Test (Dry Motor) of the FADEC System Engine Actuators |
| AMM 73-21-00-710-810 | FADEC System Wiring Harness Operation Test |
| AMM 74-00-00-710-802 | Operational Test of the Ignition System with the CFDS |
| AMM 78-31-00-710-805 | Operational Test of Thrust Reverser with MCDU |
Subtask 71-00-00-710-099-A ** ON A/C NOT FOR ALL
A. Not Applicable
4. Fault IsolationWARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS WARNING, INJURY CAN OCCUR.
WARNING:
REFER TO THE MSDS FOR ALL MATERIAL USED AND THE MANUFACTURER'S SAFETY INSTRUCTIONS FOR ALL EQUIPMENT USED. IF YOU DO NOT OBEY THIS WARNING, INJURY CAN OCCUR.
CAUTION:
MAKE SURE YOU REMOVE ELECTRICAL POWER FROM THE EEC BEFORE YOU REMOVE THE ELECTRICAL CONNECTORS. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO THE EEC CAN OCCUR.
Subtask 71-00-00-810-107-A ** ON A/C NOT FOR ALL A. General Troubleshooting Guidelines for Additional Troubleshooting Information
(1) Observed fault, flight deck effect, maintenance message guidelines for troubleshooting:
(a) The information listed in the troubleshooting procedures should be used as a guideline. The sequence of the troubleshooting steps can be accomplished based on operational experience.
(b) The Central Maintenance System (CMS) allows access to information from all aircraft systems Built-In Test Equipment (BITE), including the Electronic Engine Control (EEC).
(c) EEC-monitored faults are transmitted to the aircraft Centralized Fault Display Interface Unit (CFDIU). The Multipurpose Control & Display Unit (MCDU) allows interactive dialog with the EEC.
(d) During the initial evaluation of a fault, gather as much information as possible related to the problem. Pilot Report (PIREP), ground crew report, Post Flight Report (PFR), ground report, scheduled maintenance report and Aircraft Condition Monitoring System (ACMS) report are tools which can be used. Engine Health Monitoring (EHM) system trending data can also be used. Contact Pratt & Whitney for more information on the EHM data.
(e) The sequence of tasks in a troubleshooting procedure is based on how the system works and the probability that the action will result in correcting the fault. To avoid repeating work that was previously accomplished and to reduce the no fault found disposition of components, read through the entire procedure before you start any task.
(2) Maintenance messages
(a) Use the MCDU to interrogate the FADEC system faults AMM 73-21-00-710-806.
1 The PFR also provides useful information for Class 1 and 2 faults that occur in flight (the first engine start + 30 sec).
2 The ground report or scheduled maintenance report can also be used to find information for latched faults that are not recorded in the PFR. The ground report is used to view faults which occur before the PFR opens and after the PFR closes. The ground report is cleared when a new flight is entered.
(b) EEC-monitored faults are categorized into two types, intermittent faults and hard faults.
(c) Hard faults
1 Feedback type (wraparound, range/rate, disagree) maintenance messages that are present when the EEC is interrogated following a normal engine shutdown. This can be caused by a problem within a wiring harness or by a problem with the engine's FADEC controlled component. In some cases, the EEC may be the cause.
2 Out-of-position type maintenance messages can be caused by a sticking or stuck external linkage or actuator. There may be other issues causing the problem that are addressed by the specific troubleshooting procedures.
3 The MCDU on the flight deck can be used to perform a series of interactive engine system tests to assist with troubleshooting. The tests can also be used for repair confirmation as applicable. The tests are as follows:
a EEC operation test (self test) AMM 73-21-00-710-806.
b Operational test of the engine actuators AMM 73-21-00-710-809.
c Igniters test AMM 74-00-00-710-802.
d Thrust reverser cycling test AMM 78-31-00-710-805.
e Hydraulic pump depressurization test with the MCDU AMM 73-21-00-710-808.
f Ground harness test AMM 73-21-00-710-810.
4 A detailed wiring harness inspection can be performed by using the following procedure if time permits. Go to the procedure for the visual examination of the FADEC system wiring harness (ground harness check) AMM 73-21-00-200-805.
5 Do a repair confirmation as specified in the troubleshooting procedure before you return the engine to service. This step should be performed to make sure that you have corrected the problem. In some cases, an engine run or subsequent flight may be necessary to confirm that the troubleshooting steps which were performed have fixed the problem.
6 To correct a maintenance message, one or more engine wiring harnesses may need to be removed or replaced. If a wiring harness that is replaced affects another system that requires an engine run to confirm the fault, do an engine run to make sure that no additional engine system faults have been set.
(d) Intermittent faults
1 Feedback type (wraparound, range/rate, disagree) maintenance messages that usually will not repeat when the EEC is interrogated following normal engine shutdown. This type of fault is most often caused by a problem within a wiring harness or connector. Go to the procedure related to the component and harness intermittent troubleshooting procedure for guidance troubleshooting intermittent faults (Ref. TSM TASK 71-00-00-810-835).
2 Out-of-position (track check) type maintenance messages can be caused by a sticking external linkage or sticking actuator. They can also be caused by a reduction in servo pressure or by wiring problems. Go to the procedure related to the component and harness intermittent troubleshooting procedure for guidance troubleshooting intermittent faults (Ref. TSM TASK 71-00-00-810-835).
3 Do a repair confirmation as specified in the troubleshooting procedure before you return the engine to service. This step should be performed to make sure that you have corrected the problem. In some cases, an engine run AMM 73-21-00-710-807 or subsequent flight may be necessary to confirm that the troubleshooting steps which were performed have fixed the problem.
4 To correct a maintenance message, one or more engine wiring harnesses may need to be removed or replaced. If a wiring harness that is replaced affects another system that requires an engine run to confirm the fault, do an engine run to make sure that no additional engine system faults have been set AMM 73-21-00-710-807.
(3) Nuisance Faults in Normal Mode
(a) Refer to Table 1 for normal mode.
(1) Observed fault, flight deck effect, maintenance message guidelines for troubleshooting:
(a) The information listed in the troubleshooting procedures should be used as a guideline. The sequence of the troubleshooting steps can be accomplished based on operational experience.
(b) The Central Maintenance System (CMS) allows access to information from all aircraft systems Built-In Test Equipment (BITE), including the Electronic Engine Control (EEC).
(c) EEC-monitored faults are transmitted to the aircraft Centralized Fault Display Interface Unit (CFDIU). The Multipurpose Control & Display Unit (MCDU) allows interactive dialog with the EEC.
(d) During the initial evaluation of a fault, gather as much information as possible related to the problem. Pilot Report (PIREP), ground crew report, Post Flight Report (PFR), ground report, scheduled maintenance report and Aircraft Condition Monitoring System (ACMS) report are tools which can be used. Engine Health Monitoring (EHM) system trending data can also be used. Contact Pratt & Whitney for more information on the EHM data.
(e) The sequence of tasks in a troubleshooting procedure is based on how the system works and the probability that the action will result in correcting the fault. To avoid repeating work that was previously accomplished and to reduce the no fault found disposition of components, read through the entire procedure before you start any task.
(2) Maintenance messages
(a) Use the MCDU to interrogate the FADEC system faults AMM 73-21-00-710-806.
1 The PFR also provides useful information for Class 1 and 2 faults that occur in flight (the first engine start + 30 sec).
2 The ground report or scheduled maintenance report can also be used to find information for latched faults that are not recorded in the PFR. The ground report is used to view faults which occur before the PFR opens and after the PFR closes. The ground report is cleared when a new flight is entered.
(b) EEC-monitored faults are categorized into two types, intermittent faults and hard faults.
(c) Hard faults
1 Feedback type (wraparound, range/rate, disagree) maintenance messages that are present when the EEC is interrogated following a normal engine shutdown. This can be caused by a problem within a wiring harness or by a problem with the engine's FADEC controlled component. In some cases, the EEC may be the cause.
2 Out-of-position type maintenance messages can be caused by a sticking or stuck external linkage or actuator. There may be other issues causing the problem that are addressed by the specific troubleshooting procedures.
3 The MCDU on the flight deck can be used to perform a series of interactive engine system tests to assist with troubleshooting. The tests can also be used for repair confirmation as applicable. The tests are as follows:
a EEC operation test (self test) AMM 73-21-00-710-806.
b Operational test of the engine actuators AMM 73-21-00-710-809.
c Igniters test AMM 74-00-00-710-802.
d Thrust reverser cycling test AMM 78-31-00-710-805.
e Hydraulic pump depressurization test with the MCDU AMM 73-21-00-710-808.
f Ground harness test AMM 73-21-00-710-810.
4 A detailed wiring harness inspection can be performed by using the following procedure if time permits. Go to the procedure for the visual examination of the FADEC system wiring harness (ground harness check) AMM 73-21-00-200-805.
5 Do a repair confirmation as specified in the troubleshooting procedure before you return the engine to service. This step should be performed to make sure that you have corrected the problem. In some cases, an engine run or subsequent flight may be necessary to confirm that the troubleshooting steps which were performed have fixed the problem.
6 To correct a maintenance message, one or more engine wiring harnesses may need to be removed or replaced. If a wiring harness that is replaced affects another system that requires an engine run to confirm the fault, do an engine run to make sure that no additional engine system faults have been set.
(d) Intermittent faults
1 Feedback type (wraparound, range/rate, disagree) maintenance messages that usually will not repeat when the EEC is interrogated following normal engine shutdown. This type of fault is most often caused by a problem within a wiring harness or connector. Go to the procedure related to the component and harness intermittent troubleshooting procedure for guidance troubleshooting intermittent faults (Ref. TSM TASK 71-00-00-810-835).
2 Out-of-position (track check) type maintenance messages can be caused by a sticking external linkage or sticking actuator. They can also be caused by a reduction in servo pressure or by wiring problems. Go to the procedure related to the component and harness intermittent troubleshooting procedure for guidance troubleshooting intermittent faults (Ref. TSM TASK 71-00-00-810-835).
3 Do a repair confirmation as specified in the troubleshooting procedure before you return the engine to service. This step should be performed to make sure that you have corrected the problem. In some cases, an engine run AMM 73-21-00-710-807 or subsequent flight may be necessary to confirm that the troubleshooting steps which were performed have fixed the problem.
4 To correct a maintenance message, one or more engine wiring harnesses may need to be removed or replaced. If a wiring harness that is replaced affects another system that requires an engine run to confirm the fault, do an engine run to make sure that no additional engine system faults have been set AMM 73-21-00-710-807.
(3) Nuisance Faults in Normal Mode
(a) Refer to Table 1 for normal mode.
NOTE: Refer directly to Aircraft Maintenance Manual (AMM) tests for nuisance faults in interactive mode.
Table 1: Nuisance Faults - Normal Mode | Maintenance Message | ECAM Display | Nuisance Cause | Recommended Action | TSM Task |
|---|---|---|---|---|
| None | ENG X SHAFT PROT | Spurious due to incorrect criteria defined to trigger the alert, set under following condition: - Either every time one FADEC powered and another FADEC unpowered, or - When engine running if BMCs are OFF or FAULT. | If the ECAM caution ENG 1(2) SHAFT PROT FAULT is triggered on ground under single engine taxi procedure (i.e. only one EEC powered) or with both BMCs OFF while engine running, this caution to be considered as spurious. So ignore this fault. | N/A |
| None | ENG X EGT OVERLIMIT | The ENG X EGT OVERLIMIT ECAM warning will display but the maintenance message ENGXD-0682- EGT OVERLIMIT will not set when it should. | Go to the troubleshooting procedure for ENGXD- 0682- EGT OVERLIMIT. | (Ref. TSM TASK 71-00-00-810-864) |
| None | ENG X FUEL FILTER DEGRAD | If the engine N1 speed is below idle and the engine fuel temperature is below a specific value, this ECAM warning can set when they should not. | If ENG X FUEL FILTER DEGRAD shows when the engine is below idle, ignore this fault. If ENG X FUEL FILTER DEGRAD shows when the engine is at or above idle, continue to troubleshoot this fault. | 2nd case: (Ref. TSM TASK 73-11-00-810-822) |
| None | ENG X FUEL FILTER CLOG | If the engine N1 speed is below idle and the engine fuel temperature is below a specific value, this ECAM warning can set when they should not. | If ENG X FUEL FILTER CLOG shows when the engine is below idle, ignore this fault. If ENG X FUEL FILTER CLOG shows when the engine is at or above idle, continue to troubleshoot this fault. | 2nd case: (Ref. TSM TASK 73-11-00-810-812) |
| (None shown) | ENG X FADEC SYS FAULT | ENGXD-0673-EEC INTERNAL FAIL NO GO will not display on the Post Flight Report when it should. | If you observe ENG X FADEC SYS FAULT with no associated CLM at the same time, troubleshoot the fault using ENGXD-0673-EEC INTERNAL FAIL NO GO troubleshooting procedure. | (Ref. TSM TASK 73-21-00-810-878) |
| ENGXD-0007-IGN SYSTEM A FAIL | ENG X IGN A FAULT | This maintenance message and associated ECAM warning is set after an unsuccessful first engine auto start (single ignition). Subsequent auto restart is successful. | If the engine started after an auto restart sequence, monitor the next 4 engine starts. If the starts are successful and no "ENGXD-0007-IGN SYSTEM A FAIL" maintenance message is recorded, ignore the fault. If a subsequent start is unsuccessful troubleshoot per the Troubleshooting Manual to clear the fault. | (Ref. TSM TASK 74-00-00-810-831) |
| ENGXD-0009-IGN SYSTEM B FAIL | ENG X IGN B FAULT | This maintenance message and associated ECAM warning is set after an unsuccessful first engine auto start (single ignition). Subsequent auto restart is successful. | If the engine started after an auto restart sequence, monitor the next 4 engine starts. If the starts are successful and no "ENGXD-0009- IGN SYSTEM B FAIL " maintenance message is recorded, ignore the fault. If a subsequent start is unsuccessful troubleshoot per the Troubleshooting Manual to clear the fault. | (Ref. TSM TASK 74-00-00-810-832) |
| ENGXD-0007-IGN SYSTEM A FAIL and ENGXD-0013-IGNITION FAILURE DURING ENG START or ENGXD-0009-IGN SYSTEM B FAIL and ENGXD-0013-IGNITION FAILURE DURING ENG START | ENG x IGN A/B FAULT with or without ENG x START FAULT | These maintenance messages and associated ECAM warnings are set after an unsuccessful first engine auto start (single ignition). Subsequent auto restart is successful. | If the engine started after an auto restart sequence, monitor the next 4 engine starts. If the starts are successful and no "ENGXD-0007-IGN SYSTEM A FAIL" or " ENGXD-0009-IGN SYSTEM B FAIL" and "ENGXD-0013-IGNITION FAILURE DURING ENG START" maintenance messages recorded, ignore the fault. If one subsequent start is unsuccessful troubleshoot per the Troubleshooting Manual to clear the fault. | (Ref. TSM TASK 74-00-00-810-831) or (Ref. TSM TASK 74-00-00-810-832) or (Ref. TSM TASK 74-00-00-810-830) |
| ENGXD-0019-HPSOV FAIL | ENG X FUEL VALVE FAULT | This Maintenance Message and ECAM alert can set during the Overspeed Spooldown Test during engine shutdown when it should not (Flight Phase 9). | If the ECAM alert ENG X FUEL VALVE FAULT was set during shutdown or after engine replacement or after DSU replacement (flight phase 9 on the Post Flight Report or flight phase 0 on Ground Scanning Report), perform one engine run to idle followed by an engine shutdown to clear this fault. NOTE: A second engine run to idle may be required to observe the fault clearing from the Ground Scanning Report If the ECAM alert returns during the second shutdown, continue to troubleshoot this fault. | (Ref. TSM TASK 73-11-00-810-819) |
| ENGXD-0041-ENG SURGE | ENG X STALL | When the FIRE PUSHBUTTON is activated, this message will set when it should not. | If the FIRE PUSHBUTTON was activated and this message was set, ignore this message. If the FIRE PUSHBUTTON was not activated, continue to troubleshoot this message. | 2nd case: (Ref. TSM TASK 71-00-00-810-862) |
| ENGXA-0123-ENG POS DSCRT 1 INVALID and ENGXA-0125-ENG POS DSCRT 2 INVALID | (None Displayed, as per SMR design) | If one EEC channel is failed, these fault messages will set when they should not. | If ENGXD-0673-EEC INTERNAL FAIL NO GO, or ENGXD-0695-EEC INTERNAL FAIL SHORT TIME DISPATCH, or ENGXB-1027-28VDC FAIL has set along with ENGXA-0123-ENG POS DSCRT 1 INVALID and ENGXA-0125-ENG POS DSCRT 2 INVALID, ignore these faults. Troubleshoot per ENGXD-0673-EEC INTERNAL FAIL NO GO, or ENGXD-0695 EEC INTERNAL FAIL SHORT TIME DISPATCH, or ENGXB-1027-28VDC FAIL If ENGXD-0673-EEC INTERNAL FAIL NO GO, or ENGXD-0695-EEC INTERNAL FAIL SHORT TIME DISPATCH, or ENGXB-1027-28VDC FAIL has not set along with ENGXA-0123-ENG POS DSCRT 1 INVALID and ENGXA-0125-ENG POS DSCRT 2 INVALID, troubleshoot per ENGXA-0123-ENG POS DSCRT 1 INVALID and ENGXA-0125-ENG POS DSCRT 2 INVALID. | 1st case: (Ref. TSM TASK 73-21-00-810-878) or (Ref. TSM TASK 73-21-00-810-870) or (Ref. TSM TASK 73-21-00-810-913) 2nd case: (Ref. TSM TASK 73-00-00-810-933) and (Ref. TSM TASK 73-00-00-810-934). |
| ENGXB-0124-ENG POS DSCRT 1 INVALID and ENGXB-0126-ENG POS DSCRT 2 INVALID | (None Displayed, as per SMR design) | If one EEC channel is failed, these fault messages will set when they should not. | If ENGXD-0673-EEC INTERNAL FAIL NO GO, or ENGXD-0695 EEC INTERNAL FAIL SHORT TIME DISPATCH, or ENGXA-1026-28VDC FAIL has set along with ENGXB-0124-ENG POS DSCRT 1 INVALID and ENGXB-0126-ENG POS DSCRT 2 INVALID, ignore these faults.Troubleshoot per ENGXD-0673-EECINTERNAL FAIL NO GO, or ENGXD-0695 EEC INTERNAL FAIL SHORT TIME DISPATCH, or ENGXA-1026-28VDC FAI. If ENGXD-0673-EEC INTERNAL FAIL NO GO, or ENGXD-0695 EEC INTERNAL FAIL SHORT TIME DISPATCH, or ENGXA-1026-28VDC FAIL has not set along with ENGXB-0124-ENG POS DSCRT 1 INVALID and ENGXB-0126-ENG POS DSCRT 2 INVALID, troubleshoot per ENGXB-0124-ENG POS DSCRT 1 INVALID and ENGXB-0126-ENG POS DSCRT 2 INVALID. | 1st case: (Ref. TSM TASK 73-21-00-810-878) or (Ref. TSM TASK 73-21-00-810-870) or (Ref. TSM TASK 73-21-00-810-912) 2nd case: (Ref. TSM TASK 73-00-00-810-937) and (Ref. TSM TASK 73-00-00-810-935) . |
| ENGXB-0148-FOC-BYPASS VLV MECH FAIL | ENG X FADEC | This Maintenance Message and ECAM message for channel B can be set after channel A reset when it should not. | If ENGXB-0148-FOC-BYPASS VLV MECH FAIL has set with ENG X FADEC, go to main menu screen then to Last Leg Report, Previous Leg Report, Ground Fault Report or Previous Ground Fault Report. Select ENGXB-0148-FOC-BYPASS VLV MECH FAIL. Go to the ""Fault Cell Information"" MCDU Page 3 which displays Channel In Control. Look to see if Channel B was in control. If Channel B was not in control, continue to troubleshoot this fault. If Channel B was in control and the fault was set 3 times in the previous legs reports, continue to troubleshoot this fault. If Channel B was in control and the fault was not set 3 times in the previous legs reports, ignore this fault. | (Ref. TSM TASK 79-21-00-810-830) |
| ENGXD-0165-FRTT VLV FAIL OPEN | ENG X FUEL HEAT SYS | This Maintenance Message and associated ECAM message can be set when ENGXD-0177-RTT VLV SNSR SIG DISAGREE and ENG X HEAT SYS DEGRADED have been set. | If ENGXD-0165-FRTT VLV FAIL OPEN along with ECAM message ENG X FUEL HEAT SYS, has set along with ENGXD-0177-RTT VLV SNSR SIG DISAGREE and ENG X HEAT SYS DEGRADED, ignore ENGXD-0165-FRTT VLV FAIL OPEN and ENG X FUEL HEAT SYS. Do the troubleshooting for ENGXD-0177-RTT VLV SNSR SIG DISAGREE and ENG X HEAT SYS DEGRADED. | |
| ALL ENGXD-0237-BUFFER AIR SHUTOFF VLV FAIL OPEN | ENG X AIR SYS FAULT | This Maintenance Message and ECAM alert can be set when they should not due to slower than anticipated response time of the buffer air system. | Look at the pilot report. If the ECAM alert ENG X AIR SYS FAULT disappeared in flight (pilot report / OEB 53), ignore this fault. If the ECAM alert ENG X AIR SYS FAULT did not disappear in flight, do the fault confirmation per the Troubleshooting Manual. If the fault is set, continue to troubleshoot this fault. If the fault is not set, ignore this fault. | Refer to (Ref. TSM TASK 75-26-00-810-819) |
| ENGXA-0447-N1 SPEED SNSR FAIL -and- ENGXB-0448-N1 SPEED SNSR FAIL | ENG X SENSOR FAULT | These maintenance messages and ECAM message can be set when they should not when the oil temperature is below -30 deg.C (-22 deg.F). | "N1 SPEED SNSR FAIL has set with ENG X SENSOR FAULT during engine start or cranking, go to the Main Menu and then to the Last Leg Report, Previous Leg Report, Ground Fault Report or Previous Ground Fault Report. Select ENGXA 0447-N1 SPEED SNSR FAIL and ENGXB-0448 N1 SPEED SNSR FAIL on the maintenance report and go to the Fault Cell Information Page which displays Main Oil Temperature. Look to see if the Main Oil Temperature was less than -30 deg.C (-22 deg.F). during the engine start or crank. If the main oil temperature was less than -30 deg.C (-22 deg.F), ignore this fault If the main oil temperature was equal to or greater than -30 deg.C (-22 deg.F), continue to troubleshoot this fault | (Ref. TSM TASK 77-11-00-810-809) and (Ref. TSM TASK 77-11-00-810-808) |
| ENGXA-0455-NF SNSR ELEC FAIL and / or ENGXB-0456-NF SNSR ELEC FAIL | N/A | This/these maintenance message(s) can be set during an in- flight restart when they should not. | Select ENGXA-0455-NF SNSR ELEC FAIL and / or ENGXB-0456-NF SNSR ELEC FAIL on the maintenance report and go to the Fault Cell Information Page which displays Flight Phase and Start Mode. Look to see if Flight Phase was 6, and Start Mode was either Shutdown, Autostart, or Manual Start when the message was set. If ENGXA-0455-NF SNSR ELEC FAIL and / or ENGXB-0456-NF SNSR ELEC FAIL was set while Flight Phase was 6, and Start Mode was either Shutdown, Autostart, or Manual Start, ignore this message. If ENGXA-0455-NF SNSR ELEC FAIL and / or ENGXB-0456-NF SNSR ELEC FAIL was set while Flight Phase was not 6, or Start Mode was not either Shutdown, Autostart, or Manual Start, continue to troubleshoot this fault. | |
| ENGXD-0531-BURNER PRESS SNSR LINE CLOGGED | ENG X SENSOR FAULT | During a Thrust Control Malfunction (TCM) Cutback, this fault message and ECAM warning will set when they should not. | If ENGXD-0063-TCM ACCOMODATION ACTIVATED, ENGXD-0064-TCM CUTBACK ACTVTED IN FLARE OR TOGA, or ENGXD-0708-TCM CUTBACK ACTVTED IN FLARE, along with ECAM warning ENG X CTL SYS FAULT, has set along with ENGXD-0531-BURNER PRESS SNSR LINE CLOGGED and ENG X SENSOR FAULT, ignore ENGXD-0531-BURNER PRESS SNSR LINE CLOGGED and ENG X SENSOR FAULT and troubleshoot the other fault(s). | (Ref. TSM TASK 73-11-00-810-842) or (Ref. TSM TASK 73-11-00-810-843) or (Ref. TSM TASK 73-11-00-810-841) |
| ENG1D-0613-JOSV STUCK IN AUX POS | ENG X OIL SYS FAULT | When Main Oil Temperature is below 10 degrees C, this Maintenance Message and associated ECAM alert can be set when they should not. | If ENGXD-0613-JOSV STUCK IN AUX POS was set with ENG X OIL SYS FAULT, go to main menu screen. Select one of the following: Last Leg Report, Previous Leg Report, Ground Fault Report or Previous Ground Fault Report. Select ENGXD-0613-JOSV STUCK IN AUX POS. Go to the "Fault Cell Information" MCDU Page 4 which displays Main Oil Temperature. Look to see if the Main Oil Temperature was below 10 degrees C. If the Main Oil Temperature was equal to or above 10 degrees C, continue to troubleshoot this fault. If the Main Oil Temperature was below 10 degrees C, do the fault confirmation per the Troubleshooting Manual (may require two engine runs if oil was cold). If the fault is set after two engine runs, continue to troubleshoot this fault. If the fault is not set, ignore this fault. | |
| ENGXD-0615 JOSV STUCK IN MAIN POS | ENG X OIL SYS FAULT | When Main Oil Temperature is below 49 degrees C this maintenance message and associated ECAM alert can be set when it should not. | If ENGXD-0615-JOSV STUCK IN MAIN POS has set with ENG X OIL SYS FAULT, go to main menu screen then to Last Leg Report, Previous Leg Report, Ground Fault Report or Previous Ground fault Report Select ENGXD-0615 -JOSV STUCK IN MAIN POS. Go to the "Fault Cell Information" MCDU Page 4 which displays Main Oil Temperature. Look to see if the Main Oil Temperature was below 49 degrees C. If the Main Oil Temperature was equal to or above 49 degrees C, continue to trouble-shoot this fault. If the Main Oil Temperature was below 49 degrees C, ignore this fault. | (Ref. TSM TASK 79-21-00-810-822) |
| ENGXD-0643-OIL HI PRESS" | "ENG X FADEC" | This fault message and associated ECAM message can be set when they should not during an engine start. | If ENGXD-0643-OIL HI PRESS has set with ENG X FADEC, go to the Main Menu screen then to Last Leg Report, Previous Leg Report, Ground Fault Report or Previous Ground Fault Report. Select ENGXD-0643-OIL HI PRESS. Go to the "Fault Cell Information" MCDU Page 4 which displays Main Oil Temperature. Look to see if ENGXA-0191- OIL TEMP SNSR ELEC FAIL and ENGXB-0192- OIL TEMP SNSR ELEC are shown on the same flight leg or ground leg as ENGXD-0643-OILHI PRESS FAIL If both ENGXA-0191-OIL TEMP SNSR ELEC FAIL and ENGXB-0192-OIL TEMP SNSR ELEC FAIL are shown, continue to troubleshoot ENGXD- 0643-OIL HI PRESS along with the Oil Temperature Sensor messages. If both ENGXA-0191-OIL TEMP SNSR ELEC FAIL and ENGXB-0192-OIL TEMP SNSR ELEC FAIL messages are not shown on the same flight leg or ground leg, look to see if Main Oil Temperature was greater than 42 degrees C. If Main Oil Temperature was greater than 42 degrees C, continue to troubleshoot ENGXD- 0643-OIL HI PRESS FAIL message. If Main Oil Temperature was less than 42 degrees C, ignore ENGXD-0643-OIL HI PRESS FAIL message | (Ref. TSM TASK 79-33-00-810-845) and (Ref. TSM TASK 79-32-00-810-860) |
| ENGXD-0669-FWD FLANGEVIB SNSR | VIB N1 (Amber Crosses) and VIB N2 (Amber Crosses) | This fault message can be set when it should not be during an in-flight shutdown. | Check the Post Flight Report for any engine shutdown failures or flameouts. If the engine was running when the fault occurred, continue to troubleshoot this fault. If the engine was windmilling when the fault occurred, ignore this fault. | 1st case: (Ref. TSM TASK 77-32-00-810-824) |
| ENGXD-0670-AFT FLANGE VIB SNSR | VIB N1 (Amber Crosses) and VIB N2 (Amber Crosses) | This fault message can be set when it should not be during an in-flight shutdown | Check the Post Flight Report for any engine shutdown failures or flameouts. If the engine was running when the fault occurred, continue to troubleshoot this fault. If the engine was not running (windmill) when the fault occurred, ignore this fault. | (Ref. TSM TASK 77-32-00-810-825) |
| ENGXD-0677-PHMU INTERNAL FAIL | ENG X MINOR FAULT | When the FIRE PUSHBUTTON is activated, this message will set when it should not. | If the FIRE PUSHBUTTON was activated and this message was set, ignore this message. If the FIRE PUSHBUTTON was not activated, continue to troubleshoot this message. | 2nd case: (Ref. TSM TASK 77-31-00-810-801) COL1 |
| ENGXD-1008-STARTING INPUT FAIL | ENG X EIU FAULT | If one EEC channel is failed, and the Master Lever is turned off, this fault message and ECAM alert will set when they should not. | If ENGXD-0673-EEC INTERNAL FAIL NO GO, ENGXD-0695 EEC INTERNAL FAIL SHORT TIME DISPATCH, ENGXA-1026-28VDC FAIL, or ENGXB-1027-28VDC FAIL has set along with ENGXD-1008-STARTING INPUT FAIL and ENG X EIU FAULT, ignore these messages. Troubleshoot per ENGXD-0673-EEC INTERNAL FAIL NO GO, ENGXD-0695 EEC INTERNAL FAIL SHORT TIME DISPATCH, ENGXA-1026-28VDC FAIL, or ENGXB-1027-28VDC FAIL. If ENGXD-0673-EEC INTERNAL FAIL NO GO, ENGXD-0695 EEC INTERNAL FAIL SHORT TIME DISPATCH, ENGXA-1026-28VDC FAIL, or ENGXB-1027-28VDC FAIL have not set along with ENGXD-1008-STARTING INPUT FAIL and ENG X EIU FAULT, troubleshoot per ENGXD-1008-STARTING INPUT FAIL. | 1st case: (Ref. TSM TASK 73-21-00-810-878) or (Ref. TSM TASK 73-21-00-810-870) or (Ref. TSM TASK 73-21-00-810-912) or (Ref. TSM TASK 73-21-00-810-913). |
| ENGXD-1028-OVERSPEED SHUT OFF VLV | ENG X OVTHR PROT FAULT | This maintenance message and associated ECAM alert can be set at or above idle when they should not. | If ENGXD-1028- OVERSPEED SHUT OFF VLV has set without ENG X OVTHR PROT FAULT, ignore this message. If ENGXD-1028- OVERSPEED SHUT OFF VLV has set with ENG X OVTHR PROT FAULT, go to main menu screen then to Last Leg Report, Previous Leg Report, Ground Fault Report or Previous Ground Fault Report.Select ENGXD-1028- OVERSPEED SHUT OFF VLV.Go to the "Fault Cell information" MCDU Page 1 which displays "START MODE". Look to see if the START MODE was set to "RUNNING" when the fault message was set. If the START MODE was set to RUNNING ignore this fault. If the START MODE was not set to RUNNING, continue to troubleshoot this fault. | (Ref. TSM TASK 73-00-00-810-939) |
| ENGXD-2146-TR INADVERTENT STOW & ENGXD-2090-TR R UPR PRIMARY LOCK FAIL UNLKD & ENGXD-2092-TR R LWR PRIMARY LOCK FAIL UNLKD & ENGXD-2094-TR L UPR PRIMARY LOCK FAIL UNLKD & ENGXD-2096-TR L LWR PRIMARY LOCK FAIL UNLKD | ENG X REVERSER FAULT | Maintenance messages linked to primary lock failed unlocked can be set when should not be with the TR inadvertent stow and ECAM message. | Troubleshoot ENGXD-2146-TR INADVERTENT STOW associated with ENG X REVERSER FAULT per the troubleshooting manual to clear all faults. | (Ref. TSM TASK 78-31-00-810-993) |
| ENGXA-2130-TR ICV SOL FAIL & ENGXB-2131-TR ICV SOL FAIL & ENGXD-2120-TR ICV FAIL CLSD & ENGXD-2142-TR DEPLOY TIME SEQ FAIL | ENG X REVERSER FAULT | Maintenance messages ENGXD-2120-TR ICV FAIL CLSD and ENGXD-2142-TR DEPLOY TIME SEQ FAIL can be set when they should not be with ENGXA-2130-TR ICV SOL FAIL & ENGXB-2131-TR ICV SOL FAIL and ECAM warning. | Troubleshoot ENGXA-2130-TR ICV SOL FAIL & ENGXB-2131-TR ICV SOL FAIL associated with ENG X REVERSER FAULT per the troubleshooting manual to clear all the faults. | |
| ENGXA-2134-TR DCV SOL FAIL & ENGXB-2135-TR DCV SOL FAIL & ENGXD-2124-TR DCV SOL FAIL STOWED & ENGXD-0142-TR DEPLOY TIME SEQ FAIL | ENG X REVERSER FAULT | Maintenance messages ENGXD-2124-TR DCV SOL FAIL STOWED and ENGXD-0142-TR DEPLOY TIME SEQ FAIL can be set when they should not be with ENGXA-2134-TR DCV SOL FAIL & ENGXB-2135-TR DCV SOL FAIL and ECAM warning. | Troubleshoot ENGXA-2134-TR DCV SOL FAIL & ENGXB-2135-TR DCV SOL FAIL associated with ENG X REVERSER FAULT per the troubleshooting manual to clear all the faults. | |
| ENGXD-2122-TR DCV FAIL DEPLOYED & ENGXD-2120-TR ICV FAIL CLSD | ENG X REVERSER FAULT | Maintenance message ENGXD-2120-TR ICV FAIL CLSD can be set when they should not be with ENGXD-2122-TR DCV FAIL DEPLOYED and ECAM warning. | Troubleshoot ENGXD-2122-TR DCV FAIL DEPLOYED associated with ENG X REVERSER FAULT per the troubleshooting manual to clear all the faults. | (Ref. TSM TASK 78-31-00-810-983) |
| ENGXD-2120-TR ICV FAIL CLSD & ENGXD-2124-TR DCV FAIL STOWED | ENG X REVERSER FAULT | Maintenance message ENGXD-2124-TR DCV FAIL STOWED can be set when it should not be with ENGXD-2120-TR ICV FAIL CLSD and ECAM warning. | Troubleshoot ENGXD-2120-TR ICV FAIL CLSD associated with ENG X REVERSER FAULT per the troubleshooting manual to clear all the faults. | (Ref. TSM TASK 78-31-00-810-982) |
| ENGXD-2120-TR ICV FAIL CLSD & ENGXD-2142-TR DEPLOY TIME SEQ FAIL | ENG X REVERSER FAULT | Maintenance message ENGXD-2142-TR DEPLOY TIME SEQ FAIL can be set when it should not be with ENGXD-2120-TR ICV FAIL CLSD and ECAM message | Troubleshoot ENGXD-2120-TR ICV FAIL CLSD associated with ENG X REVERSER FAULT per the troubleshooting manual to clear all the faults. | (Ref. TSM TASK 78-31-00-810-982) |
| ENGXA-1000-EIU TR ICV 28V NOT AVAIL & ENGXB-1001-EIU TR ICV 28V NOT AVAIL & ENGXD-2120-TR ICV FAIL CLSD | ENG X REVERSER CTL FAULT & ENG X REVERSER FAULT | Maintenance message ENGXD-2120-TR ICV FAIL CLSD can be set when it should not be with ENGXA-1000-EIU TR ICV 28V NOT AVAIL and ENGXB-1001-EIU TR ICV 28V NOT AVAIL with ECAM warnings ENG X REVERSER CTL FAULT and ENG X REVERSER FAULT which should not be set. | Troubleshoot ENGXA-1000-EIU TR ICV 28V NOT AVAIL and ENGXB-1001-EIU TR ICV 28V NOT AVAIL per the troubleshooting manual to clear all the faults. | |
| ENGXA-1000-EIU TR ICV 28V NOT AVAIL & ENGXB-1001-EIU TR ICV 28V NOT AVAIL & ENGXD-2142-TR DEPLOY TIME SEQ FAIL | ENG X REVERSER CTL FAULT & ENG X REVERSER FAULT | Maintenance message ENGXD-2142-TR DEPLOY TIME SEQ FAIL can be set when it should not be with ENGXA-1000-EIU TR ICV 28V NOT AVAIL and ENGXB-1001-EIU TR ICV 28V NOT AVAIL with ECAM messages ENG X REVERSER CTL FAULT and ENG X REVERSER FAULT which should not be set. | Troubleshoot ENGXA-1000-EIU TR ICV 28V NOT AVAIL and ENGXB-1001-EIU TR ICV 28V NOT AVAIL per the troubleshooting manual to clear all the faults. | |
| ENGXD-0673-EEC INTERNAL FAIL NO GO & ENGXD-2036-UPSTREAM NAI VLV FAIL OPEN | ENG X FADEC SYS FAULT & ENG X A.ICE | Maintenance message ENGXD-2036-UPSTREAM NAI VLV FAIL OPEN with ECAM ENG X A.ICE can be set when it should not be when ENGXD-0673-EEC INTERNAL FAIL NO GO and ENG X FADEC SYS FAULT are set. | Troubleshoot ENGXD-0673-EEC INTERNAL FAIL NO GO associated with ENG X FADEC SYS FAULT per the troubleshooting manual to clear all the faults. | (Ref. TSM TASK 73-21-00-810-878) |