Jeep Liberty KJ. Manual — part 176
CLUSTER MESSAGE MISMATCH
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on following the instrument cluster (MIC) bulb check.
•
Set Condition:
The Occupant Restraint Controller (ORC) broadcasts the Airbag Lamp On/Off request message on the Bus
one time each second. In turn, the MIC broadcasts the Airbag Lamp On/Off status message on the Bus one
time each second. The ORC compares the request message and the status message and will set this DTC if
they do not match.
Possible Causes
INSTRUMENT CLUSTER (IC)
OCCUPANT RESTRAINT CONTROLLER (ORC)
Diagnostic Test
1.
DETERMINE ACTIVE OR STORED DTC
NOTE: Ensure that the battery is fully charged.
NOTE: When disconnecting or connecting airbag system components, the ignition must be turned off and
the battery must be disconnected.
Turn the ignition on.
Select ACTIVE or STORED DTC:
ACTIVE DTC
Go To 2
STORED DTC
Go To 4
2.
CHECK FOR ACTIVE MIC DTCs
With the scan tool, read active IC DTCs.
Does the scan tool display any DTCs?
Yes
>> (Refer to 8 - ELECTRICAL/INSTRUMENT CLUSTER - DIAGNOSIS AND TESTING) for the diagnostic
test procedures.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
Perform the *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
No
>> Go To 3
3.
VERIFY THAT THE AIRBAG LAMP REQUEST AND STATUS MESSAGE MATCH
Turn the ignition off, wait 5 seconds, then turn the ignition on. Allow the IC bulb check to complete before proceed-
ing.
With the scan tool in ORC, select Monitor Display and select Warning Lamp Status ORC.
Compare the ABAG IND REQ BY ACM status and the ABAG IND ON BY MIC status which display as either ON or
OFF.
Does the ABAG IND REQ BY ACM status match the ABAG IND ON BY MIC status?
Yes
>>
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two min-
utes before proceeding.
8O - 10
RESTRAINTS - ELECTRICAL DIAGNOSTICS
KJ
WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to
take the proper precautions could result in accidental airbag deployment and personal injury or death.
Replace the ORC in accordance with the Service Information.
Perform the *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
No
>> Replace the MIC in accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
Perform the *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
4.
CHECKING STORED OR INTERMITTENT CODES
NOTE: Diagnose and repair all active codes before diagnosing stored codes. Refer to the Table of Contents
in this Section for a complete list of airbag system diagnostic procedures.
With the scan tool, record and erase all DTCs in Airbag System Modules and IC.
Turn the ignition off, wait 15 seconds, then turn the ignition on.
With the scan tool, check for active DTCs in the ORC and the IC.
Does the scan tool display any active DTCs?
Yes
>> Select the appropriate diagnostic procedure from the Table of Contents in the applicable section.
No
>> No problem found at this time. Erase all codes before returning vehicle to customer.
KJ
RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 11
DRIVER SEAT BELT TENSIONER CIRCUIT OPEN
For a complete wiring diagram Refer to Section 8W.
8O - 12
RESTRAINTS - ELECTRICAL DIAGNOSTICS
KJ
•
When Monitored:
With the ignition on.
•
Set Condition:
The Occupant Restraint Controller (ORC) monitors the resistance of the Driver Seat Belt Tensioner circuits.
The ORC will set this DTC if it detects an open or high resistance on the Driver Seat Belt Tensioner circuits.
Possible Causes
(R55) DRIVER SEAT BELT TENSIONER LINE 1 CIRCUIT OR (R53) DRIVER SEAT BELT TENSIONER LINE 2
CIRCUIT OPEN
DRIVER SEAT BELT PRETENSIONER
ORC
Diagnostic Test
1.
DETERMINE ACTIVE OR STORED DTC
NOTE: Ensure that the battery is fully charged.
NOTE: The scan tool, SRS Airbag Load Tool MRL 8443, and DVOM are required to perform the following
test.
Turn the ignition on.
SELECT ACTIVE or STORED DTC:
ACTIVE DTC
Go To 2
STORED DTC
Go To 5
2.
CHECK FOR OPEN DRIVER SEAT BELT PRETENSIONER
WARNING: To avoid personal injury or death, turn the ignition off,
disconnect the battery and wait two minutes before proceeding.
Disconnect the Driver Seat Belt Pretensioner connector.
NOTE: Check connectors - Clean and repair as necessary.
Connect the 8443 Load Tool and appropriate Jumper to the Driver Seat
Belt Pretensioner connector.
WARNING: To avoid personal injury or death, turn the ignition on,
then reconnect the battery.
With the scan tool, read the active ORC DTCs.
Does the scan tool display: DRIVER SEAT BELT TENSIONER
CIRCUIT OPEN?
Yes
>> Go To 3
No
>> Replace the Driver Seat Belt Pretensioner in accordance
with the Service Information.
Perform *AIRBAG SYSTEM VERIFICATION TEST - VER 1.
KJ
RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 13
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