TM 9-6115-730-24
0009
TROUBLESHOOTING USING GSC FAULT CODES - Continued
CORRECTIVE ACTION - Continued
STEP 3.
Measure the voltage on the ECM to EMCP harness connector between ENG-
P16-A (+) and ENG-P16-B (-). Also measure the voltage between ENG-P16-C
(+) and ENG-P16-B (-).
If the voltage between ENG-P16-A (+) and ENG-P16-B (-) is not 7.5 to 8.5 Vdc or
voltage between ENG-P16-C (+) and ENG-P16-B (-) is not 2.0 to 3.0 Vdc, repair
or replace ECM to EMCP harness (WP 0088).
STEP 4.
If repairing or replacing the ECM to EMCP harness does not correct the problem,
replace the low coolant sensor (WP 0098).
STEP 5.
If replacing the low coolant sensor does not correct the problem, proceed to
STEP 6.
STEP 6.
Turn ENGINE CONTROL switch to OFF/RESET. Battery Disconnect Switch is
OFF; DEAD CRANK SWITCH is OFF.
STEP 7.
Disconnect the defective sensor connector.
a. Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to
NORMAL. On EMCP turn the ENGINE CONTROL switch to COOL
DOWN/STOP.
b. Check for a 03 diagnostic code.
c.
On EMCP, turn ENGINE CONTROL switch to OFF/RESET. Battery
Disconnect Switch is OFF. DEAD CRANK SWITCH is set to OFF.
d. Connect a jumper wire and connect to pins B and C of the bad sensor
connector.
e. Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to
NORMAL. On EMCP turn the ENGINE CONTROL switch to COOL
DOWN/STOP.
f.
Check for a 04 diagnostic code. If the correct code is present, the ECM is
working OK. Replace the defective sensor (WP 0098).
g. If the diagnostic code remains 03, proceed to STEP 8.
STEP 8.
On EMCP, turn ENGINE CONTROL switch to OFF/RESET. Battery Disconnect
Switch is OFF. DEAD CRANK SWITCH is set to OFF. Remove the jumper wire.
STEP 9.
Replace the ECM (WP 0082) and retest the system. Verify the problem is
resolved.
STEP 10.
Verify the problem has been resolved.
0009-14
