TROUBLESHOOTING USING GSC FAULT CODES - Continued
CORRECTIVE ACTION - Continued
On GSC keypad, press GSC ALARM CODES button.
a. Verify a diagnostic code 03 appears.
b. Short the jumper wire (ENG-P18-1) to the engine ground.
Verify a diagnostic code 04 appears. This verifies the ECM is working
Turn ENGINE CONTROL switch to OFF/RESET. Battery Disconnect Switch is
OFF; DEAD CRANK SWITCH is OFF.
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,
use a DVM to verify the wiring between ENG-P18-1 to ENG-P2-34 and between
ENG-P7-2 to ENG-P2-18, P6-2, and P18-2. Repair or replace the engine
If the problem is not resolved, replace the oil temperature sensor (WP 0100).
Verify the problem is resolved. If not, replace the ECM (WP 0084).
Verify the problem has been resolved.