RAM 3500 Truck 2WD V10-8.0L VIN W HDC (2000)
to Central Timer Module in the Removal and Installation for the procedures.
4. Unplug the wire harness connectors from the CTM. Check the wire harness connectors and the receptacles in the module for loose, corroded, or
damaged terminals and pins. If OK, go to Step 5. If not OK, repair as required.
5. Probe the ground circuit cavity of the 14-way CTM wire harness connector and check for continuity to a good ground. On the high-line or
premium version of the CTM, repeat the check between the ground circuit cavity of the 18-way CTM wire harness connector and a good ground.
In each case, there should be continuity. If OK, go to Step 6. If not OK, repair the open circuit(s) to ground as required.
6. Connect the battery negative cable. Check for battery voltage at the fused B(+) circuit cavity of the 14-way CTM wire harness connector. If OK,
go to Step 7. If not OK, repair the open circuit to the junction block as required.
7. Turn the ignition switch to the ON position. Check for battery voltage at the fused ignition switch output (run/start) circuit cavity of the 14-way
CTM wire harness connector. On the high-line or premium version of the CTM, repeat the check at the fused ignition switch output
(run/accessory) circuit cavity of the 18-way CTM wire harness connector. If OK, replace the faulty CTM. If not OK, repair the open circuit from
the CTM to the junction block as required.
Chime Inoperative - Engine Temperature Critical
Test 1 - 3
SYMPTOM
CHIME INOPERATIVE - ENGINE TEMPERATURE CRITICAL
POSSIBLE CAUSES
-
Tone request circuit open
-
Instrument cluster tone request output defective
-
CTM fails chime test
-
PCM DTC - coolant TEMP check
Chime Inoperative At All Times
Test 1
