•
When Monitored:
While the CAN bus ignition status is in IGN_RUN, the module checks the sensor input ranges.
•
Set Condition:
If the module detects a seat weight sensor input with the total seat weight below -6.5 kg +/- 1kg.
Possible Causes
DAMAGE TO THE PASSENGER SEAT STRUCTURE, RISER ASSEMBLY, CROSSMEMBERS, SEAT TRACKS,
FLOOR PAN
OBJECT UNDER SEAT OR REAR SEAT FOLDED DOWN AND RESTING AGAINST PASSENGER SEAT
OCCUPANT CLASSIFICATION MODULE (OCM)
Diagnostic Test
1.
TEST CONDITIONS
•
ACTIVE INTERNAL DTC
•
IGNITION DTC
•
BATTERY DTC
•
SEAT WEIGHT SENSOR DTC
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.
Turn the ignition on, then off, and then on again.
With the scan tool, read Occupant Classification Module (OCM) DTCs.
Does the scan tool display any active DTCs listed above?
Yes
>> Diagnose and repair the DTCs. Refer to the Table of Contents in this Section for a complete list of
symptoms.
No
>> Go To 2
2.
ACTIVE OR STORED DTC
With the scan tool, read OCM DTCs.
Does the scan tool display active: B1BBC-NEGATIVE SYSTEM WEIGHT?
Yes
>> Go To 3
No
>> Go To 4
3.
PERFORM OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TEST
Verify that the passenger seat is empty.
Perform a visual inspection of the Passenger Seat, wiring, connectors, risers, sensors, and retainers. Look for
chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated
terminals. Also, inspect for damaged or bent risers, a damaged or bent seat and seat structure, damaged or bent
seat tracks, and damaged or loose sensors. Repair or replace any problems found in accordance with the service
information and then continue this procedure. 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; and 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.
8O - 266
RESTRAINTS - ELECTRICAL DIAGNOSTICS
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