Symptom:
BUS SYSTEM COMMUNICATION
When Monitored and Set Condition:
BUS SYSTEM COMMUNICATION
When Monitored: Ignition ON, continuously.
Set Condition: When the CAB does not receive a message from the instrument cluster for
10 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
ELECTRO-MECHANICAL INSTRUMENT CLUSTER DTC PRESENT
BUS CIRCUIT OPEN
CAB - INTERNAL FAILURE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read DTCs.
With the DRBIIIt, read Freeze Frame information.
With the DRBIIIt, erase DTCs.
Turn the ignition off.
Turn the ignition on.
With the DRBIIIt, read DTCs.
Does the DRBIIIt display BUS SYSTEM COMMUNICATION?
All
Yes → Go To 2
No → Go To 4
2 Turn the ignition on.
With the DRBIIIt, read EMIC DTCs.
Does the DRBIIIt display ABS MESSAGE NOT RECEIVED?
All
Yes → Refer to symptom ABS MESSAGE NOT RECEIVED in the
BODY/INSTRUMENT CLUSTER category.
Perform ABS VERIFICATION TEST - VER 1.
No → Go To 3
10
BRAKES (CAB)
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