Test of the Oil Temperature Sensor [CFMB]

TASK 79-31-40-700-001-A
Test of the Oil Temperature Sensor

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	MULTIMETER - STANDARD
No specific	AR	PLIERS - CONNECTOR, JAW, SOFT
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 79-32-15-000-042-A	Removal of the Oil Temperature Sensor (IDG Cooling System Control Sensor)
TASK 79-32-15-400-042-A	Installation of the Oil Temperature Sensor (IDG Cooling System Control Sensor)

3. Job Set-up
Subtask 79-31-40-941-053-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 79-31-40-010-054-A ** ON A/C NOT FOR ALL

B. Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure
Subtask 79-31-40-760-050-A ** ON A/C NOT FOR ALL

A. Electrical Test of the Oil Temperature Sensor.
(1) Disconnect the connector from the oil temperature sensor. Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.
(2) Check the resistance values as follows. If they are different from the values given, replace the oil temperature sensor (Ref. AMM TASK 79-32-15-000-042) and (Ref. AMM TASK 79-32-15-400-042).
(a) Measure the resistance of each probe with a MULTIMETER - STANDARD. The resistance value must be between 200 and 278 Ohms, at ambient temperature.
(b) Measure the insulation resistance of each probe. The nominal value must be equal to or higher than 10 Megohms.
(3) Connect the connector to the oil temperature sensor. Use PLIERS - CONNECTOR, JAW, SOFT only if necessary.

5. Close-up
Subtask 79-31-40-410-053-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors: (Ref. AMM TASK 71-13-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:39:33 UTC