Dodge ZB 2005 Service Manual page 1301

DRIVEABILITY - GAS
Symptom:
P1687-NO CLUSTER BUS MESSAGE
When Monitored and Set Condition:
P1687-NO CLUSTER BUS MESSAGE
When Monitored: With the ignition on.
Set Condition: The PCM has not received an expected Cluster Status Bus message from
the instrument cluster within the last 20 seconds.
NO CLUSTER BUS MESSAGE
COMMUNICATE WITH CLUSTER
INSTRUMENT CLUSTER OPERATION
PCM
TEST
1 Ignition on, engine not running.
With the DRBIII , erase DTCs.
Cycle the ignition key on and off several times.
With the DRBIII , read DTCs.
Does the DTC reset?
Yes → Go To 2
→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-
No
2 Ignition on, engine not running.
With the DRBIII , attempt to communicate with the Instrument cluster.
Can communication be established with the Instrument Cluster?
Yes → Go To 3
→ Refer to the Communication Category of the Body Diagnostic
No
3 Start the engine
Allow the engine to idle.
Is the correct engine speed display in the instrument cluster (Tach)?
Yes → Replace and program the Powertrain Control Module per Service
→ Refer to the Instrument Category in the Body Diagnostic Manual
No
POSSIBLE CAUSES
ACTION
tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Manual and perform the appropriate symptom related to no
communication with cluster.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
Information.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
and perform the appropriate symptom.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
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APPLICABILITY
All
All
All