DaimlerChrysler Jeep Grand Cherokee 2002, Service Manual

Page: 205 / 284

Symptom List:
P1651-MIL/DIAG LAMP VIA J1850 BUS IN FRAME RESPONSE ER-
ROR
P1651-MIL/DIAG LAMP VIA J1850 BUS STATUS ERROR
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P1651-MIL/DIAG LAMP VIA
J1850 BUS IN FRAME RESPONSE ERROR.
When Monitored and Set Condition:
P1651-MIL/DIAG LAMP VIA J1850 BUS IN FRAME RESPONSE ERROR
When Monitored: With the ignition on.
Set Condition: The ECM does not receive a response from the instrument cluster when a
J1850 message to actuate the MIL is transmitted.
P1651-MIL/DIAG LAMP VIA J1850 BUS STATUS ERROR
When Monitored: With the ignition on.
Set Condition: The ECM MIL status does not agree with the instrument cluster MIL
status.
POSSIBLE CAUSES
REFER TO COMMUNICATION SECTION
VERIFY INSTRUMENT CLUSTER COMMUNICATION
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIII
t
, erase the ECM DTCs.
Cycle the ignition switch from OFF to ON.
Monitor the DRBIII
t
for ECM DTCs.
Does the DRBIII
t
display this DTC?
All
Yes
→
Go To 2
No
→
Go To 3
197
DRIVEABILITY - DIESEL
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