B1B82
B1B82-PASSENGER SEAT WEIGHT SENSOR 4 - LEFT REAR PERFORMANCE
For a complete wiring diagram, refer to the Wiring Information.
- When Monitored:
When CAN ignitions status is Run or SNA, 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 Occupant Classification Module (OCM) detects that the sensor input is less than 1.4 volts or greater than 3.6 volts. During auto zero: if the OCM 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 the OCM DTCs.
Does the scan tool display any active DTCs relating to internal faults, ignition faults, or battery faults?
Yes
- Diagnose and repair the DTC. Testing and Inspection for a complete list of DTCs.
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
- Perform the OCS INTERMITTENT TEST. . OCS Intermittent Test
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 the condition inspecting or testing for is present in the Seat Harness.
- Replace the Passenger Seat Harness.
- Perform the RE-ZERO OCM SEAT WEIGHT SENSORS diagnostic procedure. . Re-Zero OCM Seat Weight Sensors
No
- Go To 4
4. PERFORM THE OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TEST
NOTE: Make sure that the battery is fully charged.
NOTE: The Occupant Classification Seat Weights 9077 are required to perform this test.
1. Remove any special tools or jumper wires and reconnect all previously disconnected components - except the battery.
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 the test instructions or aborting the test causes 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. OCS 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.
3. With the scan tool, read OCM DTCs.
Does the scan tool display any active PASSENGER SEAT WEIGHT SENSOR DTCs?
Yes
- Go To 5
No
- Perform the RE-ZERO OCM SEAT WEIGHT SENSORS diagnostic procedure. . Re-Zero OCM Seat Weight Sensors
5. PERFORM OCCUPANT CLASSIFICATION MODULE SYSTEM VERIFICATION TEST
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 tightened to specification. [1][2]Restraints and Safety Systems
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 the test instructions or aborting the test causes 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. OCS 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.
3. With the scan tool, read the OCM DTCs.
Does the scan tool display any active PASSENGER SEAT WEIGHT SENSOR PERFORMANCE DTCs?
Yes
- Perform the DIAGNOSIS AND CHECKOUT PROCEDURE FOR SEAT WEIGHT SENSORS diagnostic procedure. . Diagnosis and Checkout Procedure for Seat Weight Sensors
No - But Other DTCs Present
- Diagnose and repair the DTC. Testing and Inspection for a complete list of DTCs.
No Active DTCs Present
- Perform the OCS VERIFICATION TEST. OCS Verification Test.