B1B93-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT LOW
B1B93-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT LOW
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For a complete wiring diagram, refer to the Wiring Information.
Theory of Operation
When powered, the Occupant Restraints Controller (ORC) sends a test current to the seat track position sensors to verify the integrity of the sensor and wiring. The use of the ORC adapter tool in the tests below provides a test point in place of the module.
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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.
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Set Condition:
If the module detects that the sensor input is less than or equal to 0.3 of a mA. This DTC may set when the current is between 0.3 mA and 2.0 mA.
Possible Causes |
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| 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 THE (R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT |
| (R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT SHORTED TO GROUND |
| PASSENGER SEAT TRACK POSITION SENSOR |
| OCCUPANT RESTRAINT CONTROLLER (ORC) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
1. IDENTIFYING VEHICLE EQUIPMENT
| NOTE: | Make sure the battery is fully charged. |
| 1. | Turn the ignition on. |
| 2. | Using the scan tool, read ORC active DTCs. |
Does the scan tool display active DTC: B1B93-PASSENGER SEAT TRACK POSITION SENSOR CIRCUIT LOW?
Yes
- Go To 2
No
- Perform the AIRBAG SYSTEM INTERMITTENT TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
2. CHECK FOR ACTIVE INTERNAL FAULTS, IGNITION FAULTS, AND BATTERY FAULTS IN THE OCCUPANT RESTRAINT CONTROLLER (ORC)
| 1. | Using 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
- Perform the appropriate diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Diagnosis and Testing).
No
- Go To 3
3. INSPECT PASSENGER SEAT HARNESS WIRES AND CONNECTORS
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.
WARNING:
| 1. | 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
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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 AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
No
- Go To 4
4. VERIFY THAT PASSENGER SEAT HARNESS IS ROUTED CORRECTLY
| 1. | 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 the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
5. CHECK (R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND
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| 1. | Disconnect the ORC harness connectors. |
| 2. | Connect the SRS Load Tool Adapter 8443-32-L or 8443-32-R to the ORC harness connector. |
| 3. | Measure the resistance between ground and the (R264) Passenger Seat Position Sensor voltage circuit of the appropriate terminal of the SRS Load Tool Adapter 8443-32-L or 8443-32-R . |
Is the resistance below 10k Ohms?
Yes
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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 AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
No
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Go To 6
6. CHECK THE (R262) PASSENGER SEAT POSITION SENSOR DATA CIRCUIT FOR A SHORT TO THE (R264) PASSENGER SEAT POSITION SENSOR VOLTAGE CIRCUIT
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| 1. | Measure the resistance between the (R262) Passenger Seat Position Sensor Data circuit and the (R264) Passenger Seat Position Sensor voltage circuit. |
Is the resistance below 10k Ohms?
Yes
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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 AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
No
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Go To 7
7. CHECK OPERATION OF THE PASSENGER SEAT TRACK POSITION SENSOR
| 1. | Replace the Passenger Seat Track Position Sensor in accordance with the Service Information. |
| 2. | Reconnect the vehicle body harness to the Passenger Seat Track Position sensor. |
| 3. | Remove any special tools or jumper wires and reconnect all previously disconnected components - except the Battery. |
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.
WARNING:
| 4. | Connect the scan tool to the Data Link Connector - use the most current software available. |
| 5. | Use the scan tool and erase the stored codes in all airbag system modules. |
| 6. | Turn the Ignition Off, and wait 15 seconds before turning the Ignition On. |
| 7. | Wait one minute, and read active codes and if there are none present read the stored codes. |
Did the active Passenger Seat Track Position Sensor DTC return?
Yes
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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.
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Replace the Occupant Restraint Controller (ORC) in accordance with the service information.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.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).
No
- Repair is complete.
- Perform the AIRBAG SYSTEM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/CONTROLLER, Occupant Restraint (ORC) - Standard Procedure).