B1B93-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT LOW

For a complete wiring diagram Refer to Section 8W.

When Monitored:
While the CAN bus ignition status is in IGN_RUN and the module is configured for a Passenger Seat Track Position Sensor, the module checks the sensor input current ranges.
Set Condition:
If the module detects that the sensor input is less than or equal to 0.3 ma. This DTC may set when the current is between 0.3 mA and 2.0 mA.

Possible Causes

PASSENGER SEAT HARNESS IMPROPERLY ROUTED

PASSENGER SEAT HARNESS WIRES CHAFED, PIERCED, PINCHED, PARTIALLY BROKEN

PASSENGER SEAT HARNESS CONNECTOR TERMINALS BROKEN, BENT, PUSHED OUT, SPREAD, CORRODED, CONTAMINATED

(R262) PASSENGER SEAT POSITION SENSOR DATA CIRCUIT SHORTED TO GROUND

(R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT SHORTED TO GROUND

(R262) PASSENGER SEAT POSITION SENSOR DATA CIRCUIT OPEN

(R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT OPEN

PASSENGER SEAT TRACK POSITION SENSOR

OCCUPANT RESTRAINT CONTROLLER (ORC)

Diagnostic Test

1. IDENTIFYING VEHICLE EQUIPMENT

NOTE: Ensure the battery is fully charged.

Turn the ignition on.
With the scan tool, read ORC active DTC.

Does the scan tool display active DTC: B1B93-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT LOW?

Yes

Go To 2

Go To 7

Diagnostic Test

2. 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) DTC.

Does the scan tool display any active DTC relating to internal faults, ignition faults, or battery faults?

Yes

Diagnose and repair the DTC. Refer to the Table of Contents in this Section for a complete list of symptoms.

Go To 3

3. 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 in accordance with the Service Information.
Perform *ORC VERIFICATION TEST - VER 1.

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

Reroute the passenger seat harness as necessary.
Perform *ORC VERIFICATION TEST - VER 1.

5. CHECK (R262) PASSENGER SEAT POSITION SENSOR DATA CIRCUIT AND (R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND

Disconnect the ORC connectors.
Install the 8443-32-L ORC Adaptor to the ORC connectors.

NOTE: The IP Harness is always connected to the right side (C1) of the 8443-32-L Adapter.

Measure the resistance between ground and the (R262) Passenger Seat Position Sensor Data circuit cavity 1.
Measure the resistance between ground and the (R264) Passenger Seat Position Sensor Voltage 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 passenger seat harness in accordance with the service information.
Perform the *ORC VERIFICATION TEST-VER 1.

Go To 6

6. CHECK (R262) PASSENGER SEAT POSITION SENSOR DATA CIRCUIT AND (R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR AN OPEN

Measure the resistance of the (R262) Passenger Seat Position Sensor Data circuit between the 8443-32-L ORC Adaptor cavity C2-17 and the Passenger Seat Track Position Sensor connector cavity 1.
Measure the resistance of the (R264) Passenger Seat Position Sensor Voltage circuit between the 8443-32-L ORC Adaptor cavity C2-18 and the Passenger 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.
WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.
Replace the passenger seat harness in accordance with the Service Information.
Perform the *ORC VERIFICATION TEST-VER 1.

WARNING: To avoid serious or fatal injury, turn the ignition off, disconnect the battery and wait two minutes before proceeding.

WARNING: If the Occupant Restraint Controller (ORC) is dropped at any time, it must be replaced. Failure to take the proper precautions can result in accidental airbag deployment and serious or fatal injury.
Replace the Occupant Restraint Controller (ORC ) in accordance with the service information.
Perform the *ORC VERIFICATION TEST-VER 1.

7. TEST FOR AN INTERMITTENT CONDITION

With the scan tool, record and erase all DTC 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 DTC present?

Yes

Select the appropriate symptom from Symptom List.

No problem found at this time. Erase all codes before returning vehicle to customer.