B1D75

B1D75-SEAT REAR VERTICAL POSITION SENSOR CIRCUIT LOW





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 sensor voltage is not within a specified range this DTC will set. This DTC will only set when the seat switch is moved in the same direction three consecutive times.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase DTC's
3. Move the Seat Switch in the Rear Vertical position three times.
4. With the scan tool, read DTC's.

Does the scan tool display B1D75-SEAT REAR VERTICAL POSITION SENSOR CIRCUIT LOW?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.

2. CHECK THE (G402) DRIVER SEAT REAR VERTICAL POSITION SENSE VOLTAGE




1. Disconnect the Rear Driver Vertical Seat Adjuster Motor.

NOTE: Check connectors - Clean and repair as necessary.

2. Move the seat switch in the rear vertical position during the next step.
3. Using a 12-volt test light connect one lead to the (G402) Driver Seat Rear Vertical Position Sense circuit and the other lead to Driver Seat Rear Vertical Sensor Ground at the Rear Driver Seat Adjuster Motor connector.

Does the test light illuminate for approximately two seconds then turn off with the seat switch engaged?

Yes

- Replace the Rear Driver Vertical Seat Adjuster Motor assembly.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.

No

- Go To 3

3. CHECK THE (G402) DRIVER SEAT REAR VERTICAL POSITION SENSE WIRE FOR A SHORT TO GROUND




1. Disconnect the Memory Seat Module C3 connector.

NOTE: Check connectors - Clean and repair as necessary.

2. Measure the resistance of the (G402) Driver Seat Rear Vertical Position Sense wire at the Rear Driver Vertical Seat Adjuster Motor connector to ground.

Is the resistance below 1000.0 ohm?

Yes

- Repair the (G402) Driver Seat Rear Vertical Position Sense circuit for a short to ground.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.

No

- Replace the Memory Seat Module.
- Perform POWER SEAT SYSTEM VERIFICATION TEST. Power Seat System Verification Test.