U141C
U141C-IMPLAUSIBLE DATA RECEIVED FROM OCS SENSOR 1- RIGHT REAR
For a complete wiring diagram refer to Diagrams/Electrical.
- When Monitored:
The Occupant Classification Module (OCM) continuously communicates with the Right Rear Seat Weight Sensor over the sensor signal circuit. The sensor communication and on board diagnostics are powered by the OCM signal.
- Set Condition:
This code will set, if the OCM and the Right Rear Seat Weight Sensor do not establish and maintain valid data communications.
Diagnostic Test
1. VERIFY THAT DTC U141C-IMPLAUSIBLE DATA RECEIVED FROM OCS SENSOR 1- RIGHT REAR IS ACTIVE
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.
With the scan tool, read OCM DTC.
Does the scan tool display active: U141C-IMPLAUSIBLE DATA RECEIVED FROM OCS SENSOR 1- RIGHT REAR?
Yes
- Go To 2
No
- Go To 6
2. INSPECT PASSENGER SEAT HARNESS WIRES AND CONNECTORS
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
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 *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
No
- Go To 3
3. VERIFY THAT PASSENGER SEAT HARNESS IS ROUTED CORRECTLY
Verify that the Passenger Seat Harness is routed correctly.
Is the Passenger Seat Harness routed correctly?
Yes
- Go To 4
No
- Reroute the Passenger Seat Harness as necessary.
- Perform *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
4. CHECK OPERATION OF THE RIGHT REAR SEAT WEIGHT SENSOR
NOTE: The Occupant Classification System Verification test MUST be performed after seat weight sensor replacement
NOTE: The Occupant Classification Seat Weights 9077 are required to perform this test.
Replace the Right Rear Seat Weight Sensor.
Reconnect the vehicle body harness to the sensor.
Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery.
WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.
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.
Perform *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
Connect the scan tool to the Data Link Connector - use the most current software available.
Use the scan tool and erase the stored codes in all airbag system modules.
Turn the Ignition Off, and wait 15 seconds before turning the Ignition On.
Wait one minute, and read active codes and if there are none present read the stored codes.
Did the active Right Rear Seat Weight Sensor DTC return?
Yes
- Go To 5
No
- Repair is complete.
- Perform *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
5. REPLACE THE OCCUPANT CLASSIFICATION MODULE (OCM)
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
WARNING: If the airbag control module is dropped at any time, it must be replaced. Failure to take the proper precautions could result in accidental airbag deployment and serious or fatal injury.
There are no possible causes remaining, view repair.
Repair
- Replace the Occupant Classification Module (OCM).
- Perform *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
6. TEST FOR AN INTERMITTENT CONDITION
With the scan tool, record and erase all DTC from all Airbag modules.
If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
The following additional checks may assist you in identifying a possible intermittent problem.
Reconnect any disconnected components and harness connector.
WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.
With the scan tool monitor active codes as you work through the following steps.
WARNING: To avoid serious or fatal injury, maintain a safe distance from all airbags while performing the following steps.
Wiggle the wiring harness and connectors of the related airbag circuit or component.
If codes are related to the Driver Airbag circuits, rotate the steering wheel from stop to stop.
If only stored codes return continue the test until the problem area has been isolated.
In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.
Are any ACTIVE DTC present?
Yes
- Select the appropriate symptom from Symptom List.
No
- No problem found at this time. Erase all codes before returning vehicle to customer.