U141C
U141C-IMPLAUSIBLE DATA RECEIVED FROM OCS SENSOR 1 - RIGHT REAR
- When Monitored:
At ignition on the Occupant Classification Module (OCM) supplies 5-volts to power up the Right Rear Passenger Seat Weight Sensor. Every time the sensor is powered up it sends an initialization message containing the sensor serial number to the OCM.
- Set Condition:
If the Right Rear Passenger Seat Weight Sensor 5-volt supply is temporarily interrupted resulting in the sensor powering up more than one time in the same ignition cycle the code will be set.
1. CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS AND BATTERY FAULTS IN THE OCCUPANT CLASSIFICATION MODULE (OCM)
NOTE: Ensure 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
- Diagnose and repair the DTCs. Testing and Inspection.
No
- Go To 2
2. VERIFY THAT DTC U141C-IMPLAUSIBLE DATA RECEIVED FROM OCS SENSOR 1 - RIGHT REAR
1. With the scan tool, read the OCM DTCs.
Does the scan tool display active: U141C-IMPLAUSIBLE DATA RECEIVED FROM OCS SENSOR 1 - RIGHT REAR?
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 OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test.
- Perform AIRBAG SYSTEM VERIFICATION TEST. Airbag 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 (OCM) 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 (OCM) 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.
2. With the scan tool, read the OCM DTCs.
Does the scan tool display any active PASSENGER SEAT WEIGHT SENSOR DTCs?
Yes
- Go To 5
No - But Other DTCs Present
- Diagnose and repair the DTCs. Testing and Inspection.
No - No Active DTCs Present
- Perform OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test.
5. VERIFY SEAT 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. [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 test instructions or aborting the test will cause faults to set when performing the Occupant Classification Module (OCM) 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 (OCM) 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.
3. With the scan tool, read the OCM DTCs.
Does the scan tool display any active PASSENGER SEAT WEIGHT SENSOR DTCs?
Yes
- Perform the Diagnosis/Checkout Procedure For Seat Weight Sensors. Diagnosis and Checkout Procedure For Seat Weight Sensors.
No - But Other DTCs Present
- Diagnose and repair the DTCs. Testing and Inspection.
No - No Active DTCs Present
- Perform the OCM SYSTEM VERIFICATION TEST. Testing and Inspection.
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.
WARNING: Maintain a safe distance from all airbags while performing the following steps. 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
- Diagnose and repair the DTCs. Testing and Inspection.
No
- No problem found at this time.
- Perform the OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test.