B1D7A
B1D7A-SEAT RECLINER POSITION SENSOR CIRCUIT HIGH
For a complete wiring diagram, refer to the Wiring Information.
- When Monitored:
When the seat motor is activated (sensor supply Voltage is switched on whenever motor is activated).
- Set Condition:
If the sensor Voltage is not within a specified range and the seat switch is moved in the same direction three consecutive times.
1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Using a scan tool, record and erase Diagnostic Trouble Codes (DTCs).
3. Move the seat switch in the recliner adjust position three times.
4. Using a scan tool, read DTCs.
Does the scan tool display DTC B1D7A-SEAT RECLINER POSITION SENSOR CIRCUIT HIGH?
Yes
- Go To 2
No
- The conditions that caused this code to set are not present at this time. Verify seat harness is routed correctly. 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.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
2. CHECK THE (G403) DRIVER SEAT RECLINER POSITION SENSE CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Disconnect the Driver Recliner Seat Adjuster Motor connector.
3. Disconnect the MSM C2 connector.
NOTE: Check connectors. Clean and repair as necessary.
4. Turn the ignition on.
5. Measure the Voltage of the (G403) Driver Seat Recliner Position Sense circuit between the Driver Recliner Seat Adjuster Motor connector and ground.
Is there any Voltage present?
Yes
- Repair the (G403) Driver Seat Recliner Position Sense circuit for a short to Voltage.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
No
- Go To 3
3. CHECK THE (G403) DRIVER SEAT RECLINER POSITION SENSE CIRCUIT AND THE (G493) DRIVER SEAT RECLINER POSITION SENSOR GROUND CIRCUIT FUNCTION
1. Turn the ignition off.
2. Reconnect the MSM C3 connector.
3. Disconnect the scan tool.
4. Turn off all vehicle interior and exterior lighting.
5. Mark sure all doors are closed then wait 10 seconds.
6. Connect a 12-Volt test light between the (G403) Driver Seat Recliner Position Sense circuit and the (G493) Driver Seat Recliner Position Sensor Ground circuit at the Driver Recliner Seat Adjuster Motor connector.
7. Move the seat switch in the recliner adjust position then release the switch.
Does the test light illuminate for approximately five seconds then turn off?
Yes
- Replace the Driver Recliner Seat Adjuster Motor Assembly.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
No
- Go To 4
4. CHECK THE (G403) DRIVER SEAT RECLINER POSITION SENSE CIRCUIT FOR AN OPEN
1. Disconnect the MSM C2 connector.
NOTE: Check connectors. Clean and repair as necessary.
2. Measure the resistance of the (G403) Driver Seat Recliner Position Sense circuit between the Driver Recliner Seat Adjuster Motor connector and the MSM C2 connector.
Is the resistance below 5.0 Ohms?
Yes
- Go To 5
No
- Repair the (G403) Driver Seat Recliner Position Sense circuit for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
5. CHECK THE (G493) DRIVER SEAT RECLINER POSITION SENSOR GROUND CIRCUIT FOR AN OPEN
1. Measure the resistance of the (G493) Driver Seat Recliner Position Sensor Ground circuit between the Driver Recliner Seat Adjuster Motor connector and the MSM C2 connector.
Is the resistance below 5.0 Ohms?
Yes
- Replace the Memory Seat Module (MSM).
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.
No
- Repair the (G493) Driver Seat Recliner Position Senor Ground circuit for an open.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.