Jeep Grand Cherokee WK. Manual — part 634
B2212-OCCUPANT CLASSIFICATION MODULE INTERNAL
OCS SEAT WEIGHTS MRL #9077
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
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B2212-OCCUPANT CLASSIFICATION MODULE INTERNAL (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
While the IGN status is RUN or SNA, while the CAN bus system voltage is between 10 and 16 volts, and
during the OCS Verification Test.
•
Set Condition:
This DTC will set if the module detects an internal failure.
Possible Causes
OCCUPANT CLASSIFICATION MODULE
Diagnostic Test
1.
PERFORM THE OCCUPANT CLASSIFICATION MODULE VERIFICATION TEST
NOTE: Ensure that the passenger seat is empty.
NOTE: Ensure that all seat and strain gauge sensor bolts are properly torqued.
With the scan tool, erase OCM DTCs.
Turn the ignition off, wait 10 seconds and turn ignition on.
With the scan tool, read OCM DTCs.
Did the DTC: B2212-OCCUPANT CLASSIFICATION MODULE INTERNAL reset?
Yes
>> Go To 2
No
>> Perform the OCS VERIFICATION TEST-VER 1.
2.
PERFORM OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TEST
Verify that the passenger seat is empty.
Verify that all of the Seat Weight Sensor mounting screws are torqued to specification. Refer to 23 - BODY/SEATS.
NOTE: Failure to follow the test instructions or aborting the test will cause faults to set when performing
the Occupant Classification Module System Verification Test. To prevent faults due to process errors: Verify
That All Tests Steps That Led You Here Were Performed As Directed; Verify That The Ignition Is In Run; Wait
30 Seconds After Changing The Seat Weight Before Proceeding To Allow The System To Stabilize; Only
Press Scan Tool Buttons When Directed To Do So; & Perform The Occupant Classification Module System
Verification Test To Completion.
With the scan tool in OCM, select More Options, select System Tests, and select Occupant Classification Module
System Verification Test. Run the test by following the instructions displayed on the scan tool. When the test is
complete, proceed as follows.
With the scan tool, read OCM DTCs.
Does the scan tool display any active DTCs?
Yes - B2212 is ACTIVE
Replace the Occupant Classification Module in accordance with the service information.
Yes - other DTCs ACTIVE
Diagnose and repair the DTCs. Refer to the Table of Contents in this Section for a complete list of
symptoms.
No
>> Perform OCS VERIFICATION TEST - VER 1.
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 359
B223B-VEHICLE CONFIGURATION MISMATCH
For the Airbag circuit diagram (Refer to 8 - ELECTRICAL/RESTRAINTS - SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
With the ignition on.
•
Set Condition:
The Front Control Module sends a message to the Occupant Restraint Controller (ORC) that the vehicle is not
equipped with an Occupant Classification Module (OCM) but the ORC is receiving OCM messages over the
Can B bus.
Possible Causes
INCORRECT PCM
OCCUPANT RESTRAINT CONTROLLER
Diagnostic Test
1.
VERIFY THAT DTC B223B-VEHICLE CONFIGURATION MISMATCH IS ACTIVE
Turn the ignition on.
With the scan tool, read ORC DTCs.
NOTE: Ensure the battery is fully charged.
NOTE: When reconnecting Airbag system components, the ignition must be turned off and the battery must
be disconnected.
Does the scan tool display active: B223B-VEHICLE CONFIGURATION MISMATCH?
Yes
>> Go To 2
No
>> If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness con-
nectors. Look for broken, bent, pushed out, or corroded terminals.
Perform the ORC VERIFICATION TEST-VER. 1
2.
COMPARE STORED VINS IN THE PCM AND ORC
With the scan tool, read and record the VIN that is stored in the PCM.
With the scan tool, read and record the VIN that is stored in the ORC.
Do the VINs stored in the PCM and ORC match?
Yes
>> Go To 3
No
>> Replace and program the Powertrain Control Module in accordance with the Service Information.
Ensure the PCM is replaced with the correct VIN.
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
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B223B-VEHICLE CONFIGURATION MISMATCH (CONTINUED)
3.
REPLACE THE OCCUPANT RESTRAINT CONTROLLER
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait two min-
utes before proceeding.
WARNING: If the airbag control module is dropped at any time, it must be replaced. Failure to take the
proper precautions can result in accidental airbag deployment and personal injury or death.
View repair
Repair
Replace the Occupant Restraint Controller in accordance with the service information.
Perform the ORC VERIFICATION TEST-VER 1. (Refer to 8 - ELECTRICAL/RESTRAINTS - DIAGNO-
SIS AND TESTING)
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RESTRAINTS - ELECTRICAL DIAGNOSTICS
8O - 361
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