TM 9-6115-729-24
0009
TROUBLESHOOTING USING GSC FAULT CODES - Continued
CORRECTIVE ACTION - Continued
STEP 6.
Connect a new sensor to engine harness connector ENG-P6, but do not install
the sensor into the engine.
STEP 7.
Turn ENGINE CONTROL switch to COOL DOWN/STOP. Battery Disconnect
Switch is ON; DEAD CRANK SWITCH is set to NORMAL.
STEP 8.
On GSC keypad, press GSC ALARM CODES button.
a. If the fault has cleared, replace engine coolant temperature sensor (WP
b. If the fault has not cleared, continue with STEP 9.
STEP 9.
Turn ENGINE CONTROL switch to OFF/RESET. Battery Disconnect Switch is
OFF; DEAD CRANK SWITCH is OFF.
STEP 10.
Remove engine harness connector ENG-P6 from the new sensor. Leave ENG-
P6 disconnected.
a. Use a jumper wire long enough to reach from engine harness connector
ENG-P6-1 to the engine ground stud.
b. Install jumper wire onto ENG-P6-1.
STEP 11.
Turn ENGINE CONTROL switch to COOL DOWN/STOP. Battery Disconnect
Switch is ON; DEAD CRANK SWITCH is set to NORMAL.
STEP 12.
On GSC keypad, press GSC ALARM CODES button.
a. Verify a diagnostic code 03 appears.
b. Short the jumper wire (ENG-P6-1) to the engine ground.
c.
Verify a diagnostic code 04 appears. This verifies the ECM is working
properly.
STEP 13.
Turn ENGINE CONTROL switch to OFF/RESET. Battery Disconnect Switch is
OFF; DEAD CRANK SWITCH is OFF.
STEP 14.
Remove the jumper wire and connect all wires and connectors.
If a diagnostic code 03 and/or a diagnostic code 04 did not appear in STEP 13,
repair or replace the engine harness. Verify the problem has been resolved.
STEP 15.
If the problem is not resolved, replace ECM (WP 0084).
STEP 16.
Verify the problem is resolved.
0009-14
