B1B94
B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH
For a complete wiring diagram refer to Diagrams/Electrical.
- When Monitored:
While the CAN bus ignition status is in IGN_RUN and the module is configured for a Seat Track Position Sensor (STPS), the module checks the sensor input current ranges.
- Set Condition:
If the module detects that the sensor input is greater than or equal to 20.5 mA. This DTC may set when the current is between 17 mA and 20.5 mA.
Diagnostic Test
1. CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS, AND BATTERY FAULTS IN THE OCCUPANT CLASSIFICATION MODULE (OCM)
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, then off, and then on again.
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.
No
- Go To 2
2. VERIFY THAT DTC B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH IS ACTIVE
With the scan tool, read OCM DTCs.
Does the scan tool display active: B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH?
Yes
- Go To 3
No
- Go To 8
3. INSPECT PASSENGER SEAT HARNESS WIRES AND CONNECTORS
With the scan tool, erase OCM DTCs.
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 4
4. 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 5
No
- Reroute the Passenger Seat Harness as necessary.
- Perform *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
5. CHECK FOR DTC B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH WITH PASSENGER SEAT TRACK POSITION SENSOR DISCONNECTED
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Disconnect the Passenger Seat Track Position Sensor connector.
WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.
Wait two minutes, and then with the scan tool, read OCM DTCs.
Does the scan tool display: B1B94-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT HIGH?
Yes
- Go To 6
No
- Replace the Passenger Seat Track Position Sensor.
- Perform the *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
6. CHECK (R262) SEAT POSITION SENSOR DATA-PASSENGER CIRCUIT AND (R264) SEAT POSITION SENSOR VOLTAGE-PASSENGER CIRCUIT FOR A SHORT TO VOLTAGE
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Disconnect the OCM C1 connector.
WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.
Measure the voltage of the (R262) Seat Position Sensor Data-Passenger circuit.
Measure the voltage of the (R264) Seat Position Sensor Voltage-Passenger circuit.
Is the voltage above 0.2 volt 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 Passenger Seat Harness.
- Perform the *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
No
- Go To 7
7. CHECK (R262) SEAT POSITION SENSOR DATA-PASSENGER CIRCUIT FOR A SHORT TO (R264) SEAT POSITION SENSOR VOLTAGE-PASSENGER CIRCUIT
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Measure the resistance between the (R262) Seat Position Sensor Data-Passenger circuit and the (R264) Seat Position Sensor Voltage-Passenger circuit.
Is the resistance below 10k 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 Passenger Seat Harness.
- Perform the *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
No
- Replace the OCM.
- Perform the *OCM SYSTEM VERIFICATION TEST. Occupant Classification Module (OCM) System Verification Test
8. TEST FOR AN INTERMITTENT CONDITION
With the scan tool, record and erase all DTC's from the OCM.
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 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 DTCs present?
Yes
- Select the appropriate symptom from Symptom List.
No
- No problem found at this time. Erase all codes before returning vehicle to customer.