TM 9-6115-729-24
0009
TROUBLESHOOTING USING GSC FAULT CODES - Continued
NOTE
The following failure indicates that GSC is unable to receive valid data about oil pressure from
ECM.
SYMPTOM
16.
CID 100 E FMI 02
MALFUNCTION
Oil pressure sensor.
FMI 02 - Erratic, Intermittent, or Incorrect Signal.
CORRECTIVE ACTION
STEP 1.
On EMCP, turn ENGINE CONTROL switch to OFF/RESET. Battery Disconnect
Switch is OFF; DEAD CRANK SWITCH is OFF.
STEP 2.
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).
STEP 3.
Conduct an appropriate pull test on wires in the ENG-P2 and ENG-P1
connectors to ensure wires are tight and secure.
STEP 4.
Disconnect ENG-P2 from ECM J2, ENG-P15 from the oil pressure sensor, and
ENG-P17 from the fuel pressure sensor. Verify continuity from ENG-P15-A to
ENG-P17-A and ENG-P2-41. Verify continuity from ENG-P15-B to ENG-P17-B
and ENG-P2-42. Verify continuity from ENG-P15-C to ENG-P2-24.
STEP 5.
Check the wires on both ENG-P1 and ENG-P2 harnesses for abrasion and pinch
points (WP 0090).
STEP 6.
If necessary, repair and/or replace the connectors and/or wiring (WP 0090).
STEP 7.
Disconnect the harness connectors, for the fuel pressure sensor, engine oil
pressure sensor, injection actuation sensor, turbo outlet pressure sensor,
atmospheric pressure sensor, and turbo inlet pressure sensor.
STEP 8.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP turn the ENGINE CONTROL switch to COOL DOWN/STOP.
STEP 9.
Measure 5.0 +/- 0.2 Vdc between terminals A (supply) and B (return) at each
sensor connector.
If 5.0 +/- 0.2 Vdc is not measured on all sensor connectors, perform Electrical
Connectors Wiggle Test (WP 0013, SYMPTOM 2).
STEP 10.
If the problem is not resolved, replace the oil pressure sensor (WP 0100).
STEP 11.
Retest the system. Verify that the problem has been cleared.
STEP 12
If the problem has not been resolved, replace ECM (WP 0084).
STEP 13.
Retest the system and verify the problem has been resolved.
0009-12
