EGT-Thermocouple 1 Defective (APS 3200)

TASK 49-70-00-810-813-A
EGT-Thermocouple 1 Defective (APS 3200)

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ESPM 2052210
ESPM 2053210
ESPM 205321A
AMM 49-00-00-710-008	Operational Test of the APU
ASM 496102
AMM 49-72-15-000-001	Removal of the Thermocouple (APS 3200)
AMM 49-72-15-200-003	Inspection/Check of the Thermocouple Probe (APS 3200)
AMM 49-72-15-400-002	Installation of the Thermocouple (APS 3200)

3. Fault Confirmation
Subtask 49-70-00-710-074-A ** ON A/C NOT FOR ALL

A. Do the operational test of the APU (4005KM) AMM 49-00-00-710-008.

4. Fault Isolation
Subtask 49-70-00-810-062-B ** ON A/C NOT FOR ALL

A. If the APU Class 3 Faults Page gives the maintenance message:

EGT TC1 (8057KM1)
Fault Code Number: 035 or 036

(1) If the thermocouple is not in the correct condition:

Replace EGT THERMOCOUPLE 1 (8057KM1) AMM 49-72-15-000-001 and AMM 49-72-15-400-002.

(2) If the thermocouple is in the correct condition:

Do a check and repair the wiring from the ECB (59KD) AB/7A, 6A to EGT THERMOCOUPLE 1 P30/1, 2 ASM 496102 ESPM 2052210 ESPM 2053210 ESPM 205321A.
Do the test given in Para. 3.

(a) If the fault continues:

Replace EGT THERMOCOUPLE 1 (8057KM1) AMM 49-72-15-000-001 and AMM 49-72-15-400-002.

Subtask 49-70-00-710-075-B ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:34:41 UTC