Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

IDENTIFYING VEHICLE EQUIPMENT
NOTE:
Make sure the battery is fully charged.
1. Turn the ignition on.
2. With the scan tool, read ORC active DTC.
  Does the scan tool display active DTC B1B8D-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT LOW DTC?
  
  Yes
  - Go To 2
  No
  - Go To 7
CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS, AND BATTERY FAULTS IN THE OCCUPANT RESTRAINT CONTROLLER (ORC)
1. With the scan tool, read Occupant Restraint Controller (ORC) DTC.
  Does the scan tool display any active DTC relating to internal faults, ignition faults, or battery faults?
  
  Yes
  - Refer to OCCUPANT RESTRAINT CONTROLLER (ORC) - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
  No
  - Go To 3
INSPECT DRIVER 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 Driver 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 Driver Seat Harness in accordance with the Service Information.
  - Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 4
VERIFY THAT DRIVER SEAT HARNESS IS ROUTED CORRECTLY
1. Verify that the Driver Seat Harness is routed correctly.
  Is the Driver Seat Harness routed correctly?
  
  Yes
  - Go To 5
  No
  - Reroute the Driver Seat Harness as necessary.
  - Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK (R261) DRIVER SEAT POSITION SENSOR SIGNAL CIRCUIT AND (R263) DRIVER SEAT POSITION SENSOR SUPPLY CIRCUIT FOR A SHORT TO GROUND

Fig 1: Checking Driver Seat Position Sensor Voltage Circuit For A Short To Ground
Courtesy of CHRYSLER GROUP, LLC

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. Disconnect the ORC connectors.
2. Connect the SRS Load Tool Adaptor (special tool #8443-32-L, Adapter, SRS Adapter) to the ORC connectors.
  NOTE:
  The IP Harness is always connected to the right side (C1) of the SRS Load Tool Adaptor (special tool #8443-32-L, Adapter, SRS Adapter).
3. Measure the resistance between ground and the (R261) Driver Seat Position Sensor Signal circuit cavity 1.
4. Measure the resistance between ground and the (R263) Driver Seat Position Sensor Supply circuit cavity 2.
  Is the resistance below 10K Ohms on either circuit?
  
  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 Driver Seat Harness in accordance with the Service Information.
  - Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 6
CHECK (R261) DRIVER SEAT POSITION SENSOR SIGNAL CIRCUIT AND (R263) DRIVER SEAT POSITION SENSOR SUPPLY CIRCUIT FOR AN OPEN

Fig 2: Measure Resistance Of Driver Seat Position Sensor Signal Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (R261) Driver Seat Position Sensor Signal circuit between the SRS Load Tool Adaptor (special tool #8443-32-L, Adapter, SRS Adapter) cavity C2-24 and the Driver Seat Track Position Sensor connector cavity 1.
  
  Fig 3: Measuring Resistance Of Driver Seat Position Sensor Supply Circuit
  Courtesy of CHRYSLER GROUP, LLC
2. Measure the resistance of the (R263) Driver Seat Position Sensor Supply circuit between the SRS Load Tool Adaptor (special tool #8443-32-L, Adapter, SRS Adapter) cavity C2-23 and the Driver Seat Track Position Sensor connector cavity 2.
  Is the resistance of either circuit above 5.0 Ohms?
  
  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 Driver Seat Harness in accordance with the Service Information.
  - Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  
  WARNING:
  If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to follow these instructions may result in possible serious or fatal injury.
  - Replace the Occupant Restraint Controller (ORC) in accordance with the Service Information.
  - Perform the AIRBAG SYSTEM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
TEST FOR AN INTERMITTENT CONDITION
1. With the scan tool, record and erase all DTC from the ORC.
2. If any ACTIVE codes are present they must be resolved before diagnosing any stored codes.
  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.
3. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
4. Look for chafed, pierced, pinched, or partially broken wires and broken, bent, pushed out, spread, corroded, or contaminated terminals.
5. The following additional checks may assist you in identifying a possible intermittent problem.
6. Reconnect any disconnected components and harness connector.
  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.
7. With the scan tool monitor active codes as you work through the following steps.
  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.
8. Wiggle the wiring harness and connectors of the related airbag circuit or component.
9. If only stored codes return continue the test until the problem area has been isolated.
10. In the previous steps you have attempted to recreate the conditions responsible for setting active DTC in question.
  Are any ACTIVE DTC present?
  
  Yes
  - Refer to OCCUPANT RESTRAINT CONTROLLER (ORC) - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
    .
  No
  - No problem found at this time. Erase all codes before returning vehicle to customer.