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DRIVEABILITY - DIESEL
P1652-J1850 COMMUNICATION BUS LOST ARBITRATION —
P1652-J1850 COMMUNICATION BUS UNAUTHORIZED RESET
When Monitored: With the ignition on.
Set Condition: An unauthorized reset of the J1850 hardware occurs during normal
operation.
VERIFY ACTIVE DTC
VERIFY INSTRUMENT CLUSTER COMMUNICATION
INTERMITTENT CONDITION
TEST
1
Turn the ignition on.
With the DRBIII attempt to communicate with the Instrument Cluster.
Is the Instrument Cluster communicating with the DRB?
Yes → Go To 2
→ Refer to the appropriate symptom in the Body Diagnostic Infor-
No
2
Turn the ignition on.
With the DRBIII , erase the ECM DTCs.
Turn the ignition off then turn the ignition on and wait 60 seconds.
With the DRBIII , read the ECM DTCs.
Does the DRB display this DTC?
Yes → Replace and program the Engine Control Module in accordance
→ Go To 3
No
POSSIBLE CAUSES
ACTION
mation.
Perform ROAD TEST VERIFICATION - VER-2.
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
200
Continued
APPLICABILITY
All
All
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