B1B82
B1B82-PASSENGER SEAT WEIGHT SENSOR 4 - LEFT REAR PERFORMANCE
For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.
- When Monitored:
When CAN ignitions status is Run or signal not available, during auto zero and while performing the Occupant Classification Module System Verification Test.
- Set Condition:
During the occupant classification module system verification test: if the module detects that the sensor input is less than 1.4 volts or greater than 3.6 volts. During auto zero: if the module detects that the sensor input is less than 1 volt or greater than 4 volts.
1. CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS, AND BATTERY FAULTS IN THE OCCUPANT CLASSIFICATION MODULE (OCM)
NOTE: Make sure that the battery is fully charged.
1. Turn the ignition on, then off, and then on again.
2. With the scan tool, read Occupant Classification Module (OCM) DTCs.
Does the scan tool display any active DTCs relating to internal faults, ignition faults, or battery faults?
Yes
- Perform the appropriate diagnostic procedure.Testing and Inspection
No
- Go To 2
2. VERIFY THAT DTC B1B82-PASSENGER SEAT WEIGHT SENSOR 4 - LEFT REAR PERFORMANCE IS ACTIVE
1. With the scan tool, read OCM DTCs.
Does the scan tool display active: B1B82-PASSENGER SEAT WEIGHT SENSOR 4 - LEFT REAR PERFORMANCE?
Yes
- Go To 3
No
- Go To 6
3. INSPECT PASSENGER SEAT HARNESS WIRES AND CONNECTORS
WARNING: Turn the ignition off, disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
1. Using the wiring diagram/schematic as a guide, inspect the Passenger Seat Harness wiring and connectors. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
Are any of these conditions present?
Yes
- NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if any of these conditions exist.
- Replace the Passenger Seat Harness.
- Perform the OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TEST.Occupant Classification Module (OCM) System Verification Test.
No
- Go To 4
4. PERFORM OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TEST
NOTE: Failure to follow 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. Occupant Classification Module (OCM) System Verification Test
1. 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, wait two minutes, and then proceed as follows. Occupant Classification Module (OCM) System Verification Test.
2. With the scan tool, read OCM DTCs.
Does the scan tool display any active PASSENGER SEAT WEIGHT SENSOR PERFORMANCE DTCs?
Yes
- Go To 5
No - But Other DTCs Present
- Perform the appropriate diagnostic procedure.Testing and Inspection
No - No Active DTCs Present
- Perform the OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TEST.Occupant Classification Module (OCM) System Verification Test.
5. VERIFY SEAT WEIGHT SENSOR TORQUE
WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
1. Verify that all of the Seat Weight Sensor mounting screws are torqued to specification.
WARNING: Turn the ignition on, then reconnect the 12-volt battery. Wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
NOTE: Failure to follow 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. Occupant Classification Module (OCM) System Verification Test
2. 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, wait two minutes, and then proceed as follows. Occupant Classification Module (OCM) System Verification Test.
3. With the scan tool, read OCM DTCs.
Does the scan tool display any active PASSENGER SEAT WEIGHT SENSOR PERFORMANCE DTCs?
Yes
- Perform the Diagnosis/Checkout Procedure For Seat Weight Sensors.Diagnosis and Checkout Procedure For Seat Weight Sensors
No - But Other DTCs Present
- Perform the appropriate diagnostic procedure.Testing and Inspection
No - No Active DTCs Present
- Perform the OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TEST.Occupant Classification Module (OCM) System Verification Test.
6. CHECKING STORED OR INTERMITTENT CODES
NOTE: Diagnose and repair all active codes before diagnosing stored codes.
1. With the scan tool, record and erase all Airbag System Module DTCs.
WARNING: Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
2. Using the wiring diagram/schematic as a guide, inspect the related wiring and connectors for chafed, pierced, pinched, and partially broken wires, and for broken, bent, pushed out, corroded, and contaminated terminals. Repair as necessary.
3. Reconnect all disconnected components and harness connectors.
WARNING: Turn the ignition on, then reconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
4. With the scan tool, monitor for active codes while performing the following:
- Wiggle the wiring harness and connectors of the related airbag circuit.
- Continue the test until either a code becomes active or the problem area is isolated.
5. In the previous steps you have attempted to recreate the conditions responsible for setting the DTC in question/causing the intermittent condition.
Are any ACTIVE DTCs present?
Yes
- Perform the appropriate diagnostic procedure.Testing and Inspection
No
- No problem found at this time. Perform the Occupant Classification Module System Verification Test. Occupant Classification Module (OCM) System Verification Test. Erase all codes before returning vehicle to customer.