R (2) If the fault continues:
R - do a check of the aircraft wiring between the oil temperature
R sensor (4004EN) and the EIU (1KS1) for open or short to ground
R (Ref. ASM 79-36/01) pin AA/1 to pin AA/10F. Pay particular
R attention to engine to pylon connectors 4005VC-A, 405VC-A, 4006VC-A
R and 406VC-A and to ground wire connections (9951DC, 9956DC and
R 9957DC) on Engine Fan Case (check for looseness or contamination).

R (a) if damage is found:
R - repair or replace the harness as necessary (Ref. AMM TASK 71-R 51-43-000-001) and (Ref. AMM TASK 71-51-43-400-001).

R (b) if nothing is found:
R - replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and
R (Ref. AMM TASK 73-25-34-400-040).
R

R B. Do the operational test of the Engine Interface Unit (EIU) through the
R CFDS (Ref. AMM TASK 73-25-34-710-040).
R

R (1) Check that failure message ECU1 4000KS OR OIL TEMP SENSOR 1 4004EN is
R no longer present.

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 TASK 79-32-00-810-822

R Loss of the Oil Temperature Signal from Sensor 4004EN or Disagree with Oil R Temperature Signal from ECU Oil Temperature Sensor on Engine 2
 1. Possible Causes
_______________

R - EIU-1 (1KS1)
 - SENSOR-OIL TEMP (4004EN) R - aircraft wiring R
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
R AMM 71-51-43-000-001 R AMM 71-51-43-400-001 R
 AMM 73-25-34-000-040
AMM 73-25-34-400-040
AMM 73-25-34-710-040

R AMM 79-32-15-000-041 R R AMM 79-32-15-400-041 R R ASM 79-36/01
 3. Fault Confirmation
__________________

R A. Not applicable. R
 4. Fault Isolation
_______________

R A. Procedure.
Removal of the Left Side Harness (4216KS)
Installation of the Left Side Harness (4216KS)

Removal of the Engine Interface Unit (EIU)
 (1KS1,1KS2)
Installation of the Engine Interface Unit (EIU)
 (1KS1,1KS2)
Operational Test of the Engine Interface Unit
 (1KS1,1KS2)
Removal of the Oil Temperature Sensor (Engine
Condition Monitoring Sensor)
Installation of the Oil Temperature Sensor (Engine
Condition Monitoring Sensor)

R  NOTE : The fault is triggered if the oil temperature sensor (4004EN)____
R  indicates a temperature greater than 140 deg. C while the ECU
R  temperature sensor indicates a temperature in between - 55 deg. C
R  and 135 deg. C. This is indicative of a faulty output of oil
R  temperature sensor (4004EN).
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R  (1) Check carrefully electrical connector at the oil temperature sensor 
R  (4004EN) for looseness, damaged pins or contamination. 
R  (a) If damage is found: 
R  - repair or replace as necessary. 
R  (b) If nothing is found: 
R  - replace the SENSOR-OIL TEMP (4004EN) (Ref. AMM TASK 79-32-15-
R  000-041) and (Ref. AMM TASK 79-32-15-400-041). 
R  (2) If the fault continues: 
R  - do a check of the aircraft wiring between the oil temperature 
R  sensor (4004EN) and the EIU (1KS1) for open or short to ground 
R  (Ref. ASM 79-36/01) pin AA/1 to pin AA/10F. Pay particular 
R  attention to engine to pylon connectors 4005VC-A, 405VC-A, 4006VC-A 
R  and 406VC-A and to ground wire connections (9951DC, 9956DC and 
R  9957DC) on Engine Fan Case (check for looseness or contamination). 
R  (a) if damage is found: 
R  - repair or replace the harness as necessary (Ref. AMM TASK 71-
R  51-43-000-001) and (Ref. AMM TASK 71-51-43-400-001). 
　
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