TM 9-6115-730-24
0009
TROUBLESHOOTING USING GSC FAULT CODES - Continued
NOTE
This failure indicates that GSC is unable to receive any valid data about the coolant temperature
from the ECM.
SYMPTOM
17.
CID 110 E FMI 02
CID 110 E FMI 03
CID 110 E FMI 04
MALFUNCTION
Coolant Temperature Sensor.
FMI 02 - Erratic, Intermittent, or Incorrect Signal.
FMI 03 - Voltage Above Normal.
FMI 04 - Voltage Below Normal.
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.
Check the wires on both harnesses for abrasion and pinch points (WP 0088).
Repair and/or replace the connectors and/or wiring (WP 0088).
STEP 5.
Disconnect engine harness connector ENG-P100 from coolant temperature
sensor (WP 0088, Figure 1, sheet 1, and FO-2, sheet 1).
STEP 6.
Connect a new sensor to engine harness connector ENG-P100, but do not install
the sensor into the engine.
STEP 7.
Set Battery Disconnect Switch to ON. Set DEAD CRANK SWITCH to NORMAL.
On EMCP turn the ENGINE CONTROL switch to COOL DOWN/STOP.
STEP 8.
On GSC keypad, press GSC ALARM CODES button.
a. If the fault has cleared, replace coolant temperature sensor
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.
0009-12
