B1B90
B1B90-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER
For a complete wiring diagram consult 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, the module checks the sensor input current ranges.
- Set Condition:
If the module detects that the sensor input is greater than or equal to 17.1 mA.
Diagnostic Test
1. CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS, AND BATTERY FAULTS IN THE OCCUPANT RESTRAINT CONTROLLER (ORC)
With the scan tool, read Occupant Restraint Controller (ORC) 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 B1B90-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER IS ACTIVE
Does the scan tool display active: B1B90-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER?
Yes
- Go To 3
No
- Go To 8
3. INSPECT DRIVER 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 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 any of these conditions exist
- Replace the Driver Seat Harness.
- Perform *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
No
- Go To 4
4. VERIFY THAT DRIVER SEAT HARNESS IS ROUTED CORRECTLY
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 *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
5. CHECK FOR DTC B1B90-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER WITH DRIVER 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 Driver 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 ORC DTCs.
Does the scan tool display: B1B90-DRIVER SEAT TRACK POSITION SENSOR CIRCUIT SHORTED TOGETHER?
Yes
- Go To 6
No
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
- Replace the Driver Seat Track Position Sensor.
- Perform the *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
6. CHECK (R261) SEAT POSITION SENSOR DATA-DRIVER CIRCUIT AND (R263) SEAT POSITION SENSOR VOLTAGE-DRIVER 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 ORC C1 connector.
WARNING: To avoid serious or fatal injury, turn the ignition on, then reconnect the battery.
Measure the voltage of the (R261) Driver Seat Position Sensor Data circuit between the Driver Seat Track Position Sensor connector and ground.
Measure the voltage of the (R263) Driver Seat Position Sensor Voltage circuit between the Driver Seat Track Position Sensor connector and ground.
Is the voltage above 0.2 volts on either circuit?
Yes
NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if any of these conditions exist
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
- Replace the Driver Seat Harness.
- Perform the *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
No
- Go To 7
7. CHECK (R261) DRIVER SEAT POSITION SENSOR DATA CIRCUIT FOR A SHORT TO (R263) DRIVER SEAT POSITION SENSOR VOLTAGE 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 (R261) Driver Seat Position Sensor Data circuit and the (R263) Driver Seat Position Sensor Voltage circuit in the Driver Seat Track Position Sensor connector.
Is the resistance below 10k ohms?
Yes
NOTE: Do not attempt to repair the Seat Harness. Replace the Seat Harness if any of these conditions exist
- Replace the Driver Seat Harness.
- Perform the *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
No
- Replace the ORC.
- Perform the *ORC VERIFICATION TEST - VER 1. Occupant Restraint Controller (ORC) Verification Test
8. TEST FOR AN INTERMITTENT CONDITION
With the scan tool, record and erase all DTC's from the ORC.
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
- Diagnose and repair the DTC(s).
No
- No problem found at this time. Erase all codes before returning vehicle to customer.