TROUBLESHOOTING USING GSC FAULT CODES - Continued
CORRECTIVE ACTION - Continued
If the problem is not resolved, replace intake manifold air temperature sensor
Verify the problem is resolved. If not, replace ECM (WP 0084).
Verify the fault code has cleared.
The engine oil temperature sensor is read by the ECM and the information sent to the GSC via
the CAT data link (ENG-P1 to ENG-P37).
CID 175 FMI 02
CID 175 FMI 03
CID 175 FMI 04
Engine oil temperature sensor.
FMI 02 - Erratic, Intermittent, or Incorrect Signal.
FMI 03 - Voltage Above Normal.
FMI 04 - Voltage Below Normal.
On EMCP, turn ENGINE CONTROL switch to OFF/RESET. Battery Disconnect
Switch is OFF; DEAD CRANK SWITCH is OFF.
Inspect connectors ENG-P2 on the engine harness (FO-2, sheet 1) and ENG-P1
on the ECM to EMCP Harness (FO-2, sheet 2).
Conduct an appropriate pull test on wires in the ENG-P2 and ENG-P1
connectors to ensure wires are tight and secure.
Check the wires on both harnesses for abrasion and pinch points (WP 0090).
Repair and/or replace the connectors and/or wiring (WP 0090), as necessary.
Disconnect engine harness connector ENG-P18 from oil temperature sensor
(WP 0090, Figure
1, and FO-2, sheet 1).
a. Fabricate a jumper wire long enough to reach from engine harness connector
ENG-P18-1 to the engine ground stud.
b. Install jumper wire onto ENG-P18-1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP, turn ENGINE CONTROL switch to COOL DOWN/ STOP.