Cmtc Or Evic Inoperative - Dodge Ram 2004 Service Manual

COMPASS/MINI-TRIP COMPUTER
Symptom:

*CMTC OR EVIC INOPERATIVE

FUSED B(+) CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
GROUND CIRCUIT OPEN
COMPASS/MINI-TRIP COMPUTER
TEST
1 NOTE: Diagnose and repair any MIC, FCM, PCM, or Communication DTCs
before proceeding.
Turn the ignition off.
Disconnect the Overhead Console harness connector.
Measure the voltage between the Fused B+ circuit and ground.
Is the voltage above 10.5 volts?
Yes → Go To 2
→ Repair the Fused B+ circuit for an open.
No
2 Turn the ignition off.
Disconnect the Overhead Console harness connector.
Turn the ignition on.
Measure the voltage between the Fused Ignition Switch Output circuit and ground.
Is the voltage below 10.5 volts?
Yes → Repair the Fused Ignition Switch Output circuit for an open.
→ Go To 3
No
3 Turn the ignition off.
Disconnect the Overhead Console harness connector.
Measure the resistance between ground and the CMTC ground circuit.
Is the resistance above 5.0 ohms?
Yes → Repair the Ground circuit for an open.
→ Replace and configure the CMTC in accordance with the Service
No
POSSIBLE CAUSES
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Information.
Perform BODY VERIFICATION TEST - VER 1.
312
APPLICABILITY
All
All
All