TM 9-6115-729-24
0011
TROUBLESHOOTING FAILURES WITHOUT FAULT CODES - Continued
CORRECTIVE ACTION - Continued
STEP 3.
Check air inlet turbo pipes and exhaust for restrictions and leaks.
a. Remove restrictions.
b. Clean air filters (WP 0070).
c.
Repair air leaks found (WP 0071).
STEP 4.
Check for a fuel supply problem and verify fuel pressure (WP 0013, SYMPTOM
13).
STEP 5.
If no fuel supply problem is found, engine has an internal problem. Replace the
engine (WP 0098).
STEP 6.
Verify the problem has been resolved.
MALFUNCTION
ECM May Not Be Leaving Cold Mode Operation.
CORRECTIVE ACTION
STEP 1.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP set ENGINE CONTROL switch to START.
STEP 2.
Check coolant temperature using GSC.
a. Coolant temperature should start at ambient temperature and rise above
64F (17C) as the engine warms up.
b. If GSC temperature reading does not increase properly, replace coolant
temperature sensor (WP 0100).
c.
If engine does not warm up, replace engine coolant temperature
thermostat(s) (WP 0082).
STEP 3.
Verify the problem has been resolved.
MALFUNCTION
Harness Connections Faulty.
CORRECTIVE ACTION
STEP 1.
On EMCP set ENGINE CONTROL switch to OFF/RESET. Set Battery
Disconnect Switch to OFF. Set DEAD CRANK SWITCH to OFF.
STEP 2.
Check for correct installation of ECM to EMCP harness connector ENG-P1 to
ECM J1 and of engine harness connector ENG-P2 to ECM J2 (cables plugged in
to ECM) (FO-2, sheet 1 and sheet 2). Plug connectors in and torque the ENG-
P1/J1 and ENG-P2/J2 connectors to 55 lb. in.
STEP 3.
Check engine harness timing sensor connectors ENG-P4 and ENG-P5 and unit
injector connector ENG-P300/J300. Plug connectors in securely.
STEP 4.
Verify connections between LSM pins A4-19 and A4-20 and the ECM input pins
ENG-P1-5 and ENG-P1-66 (FO-4, sheet 2 and FO-3, sheets 1 and 2). Look
specifically for intermittent connections (FO-2, sheet 1). Repair or replace wiring,
STEP 5.
Verify the problem has been resolved.
0011-28
