No Response From Instrument Cluster - Mercedes-Benz Sprinter 2003 Manual

COMMUNICATION
Symptom:

*NO RESPONSE FROM INSTRUMENT CLUSTER

CHECK POWERS AND GROUNDS TO THE INSTRUMENT CLUSTER
MODULE - INTERNAL SHORT TO GROUND
K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO GROUND
MODULE - INTERNAL SHORT TO VOLTAGE
K-IC, ATC, HBM, CHM CIRCUIT SHORTED TO VOLTAGE
K-IC, ATC, HBM, CHM CIRCUIT OPEN
INSTRUMENT CLUSTER
TEST
1 Turn the ignition off.
Disconnect the Instrument Cluster harness connectors.
Check each power and ground circuit to the module.
Were any problems found?
Yes → Refer to the wiring diagrams located in the service information to
→ Go To 2
No
2 Turn the ignition off.
Disconnect the Instrument Cluster harness connectors.
Disconnect the DRBIII from the DLC.
Measure the resistance between ground and the K-IC, ATC, HBM, CHM circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 3
→ Go To 4
No
3 Turn the ignition off.
Disconnect the Instrument Cluster harness connectors.
Measure the resistance between ground and the K-IC, ATC, HBM, CHM circuit.
While monitoring the ohmmeter, disconnect each module (ATC, HBM, CHM) one at
a time.
NOTE: The vehicle may not be equipped with all the above modules.
Is the resistance below 5.0 ohms with all the above modules disconnected?
Yes → Repair the K-IC, ATC, HBM, CHM circuit for a short to ground.
→ Replace the Module, that when disconnected the short was
No
POSSIBLE CAUSES
ACTION
help isolate an open or shorted condition. Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
eliminated, in accordance with the service information.
Perform BODY VERIFICATION TEST - VER 1.
116
APPLICABILITY
All
All
All