B1D83

B1D83-SEAT REAR VERTICAL MOTOR CONTROL CIRCUIT PERFORMANCE

B1D83 - Seat Rear Vertical Motor Control Circuit Performance:

WHEN MONITORED
Whenever the seat motor is activated.

SET CONDITION
If the Memory Seat Module does not detect the rotation of the seat motor this DTC will set. This DTC will only set when the seat switch is moved in the same direction three consecutive times.

POSSIBLE CAUSES
- Seat position sensor circuit diagnostic trouble codes
- (G402) Driver seat rear vertical position sense circuit open
- (G492) Driver seat rear vertical sensor ground circuit open
- (P111) Driver seat rear vertical up driver
- (P113) Driver seat rear vertical down driver
- Rear driver vertical seat adjuster motor
- Memory seat module

Diagnostic Test

1. CHECK FOR RELATED DIAGNOSTIC TROUBLE CODES
Turn the ignition on.
With the scan tool, read DTC's.

Q: Does the scan tool display any seat position sensor DTC's?

YES: Diagnose and repair other DTC(s) first.
NO: Go To 2

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

Q: Does the scan tool display B1D83-SEAT REAR VERTICAL MOTOR CONTROL CIRCUIT PERFORMANCE?

YES: Go To 3
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 - VER 1. Power Seat System Verification Test

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




Disconnect the Rear Driver Vertical Seat Adjuster Motor.

NOTE: Check connectors - Clean and repair as necessary.

Move the Seat Switch in the rear vertical position during the next step.
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 Driver Rear Vertical Seat Adjuster Motor connector.

Q: Does the test light illuminate for approximately 2 seconds then turn off with the seat switch engaged?

YES: Go To 4
NO: Go To 5

4. CHECK THE DRIVER SEAT REAR VERTICAL UP/DOWN DRIVER VOLTAGE




Move the Seat Switch in the rear vertical position during the next step.
Using a 12-volt test light connect one lead to the (P111) Driver Seat Rear Vertical Up Driver circuit and the other lead to (P113) Driver Seat Rear Vertical Down Driver circuit at the Rear Driver Vertical Seat Adjuster Motor connector.

Q: Does the test light illuminate with the seat switch engaged?

YES: Replace the Rear Driver Vertical Seat Adjuster motor assembly.
Perform POWER SEAT SYSTEM VERIFICATION TEST-VER 1. Power Seat System Verification Test
NO: Go To 7

5. CHECK THE (G402) DRIVER SEAT REAR VERTICAL POSITION SENSE WIRE FOR AN OPEN




Disconnect the Memory Seat Module C3 connector.

NOTE: Check connectors - Clean and repair as necessary.

Measure the resistance of the (G402) Driver Seat Rear Vertical Position Sense circuit at the Rear Driver Vertical Seat Adjuster Motor connector to the C3 connector.

Q: Is the resistance above 1.0 ohm?

YES: Repair the (G402) Driver Seat Rear Vertical Position Sense circuit for an open.
Perform POWER SEAT SYSTEM VERIFICATION TEST-VER 1. Power Seat System Verification Test
NO: Go To 6

6. CHECK THE (G492) DRIVER SEAT REAR VERTICAL SENSOR GROUND FOR AN OPEN




Measure the resistance of the (G492) Driver Seat Rear Vertical Sensor Ground circuit at the Driver Rear Vertical Seat Adjuster Motor connector to the C3 connector.

Q: Is the resistance above 1.0 ohm?

YES: Repair the (G492) Driver Seat Rear Vertical Sensor Ground circuit for an open.
Perform POWER SEAT SYSTEM VERIFICATION TEST-VER 1. Power Seat System Verification Test
NO: Replace the Memory Seat Module.
Perform POWER SEAT SYSTEM VERIFICATION TEST-VER 1. Power Seat System Verification Test

7. CHECK THE (P111) DRIVER SEAT REAR VERTICAL UP DRIVER WIRE FOR AN OPEN




Disconnect the Memory Seat Module C3 connector.

NOTE: Check connectors - Clean and repair as necessary.

Measure the resistance of the (P111) Driver Seat Rear Vertical Up Driver circuit at the Driver Rear Vertical Seat Adjuster Motor connector to the C3 connector.

Q: Is the resistance above 1.0 ohm?

YES: Repair the (P111) Driver Seat Rear Vertical Up Driver circuit for an open.
Perform POWER SEAT SYSTEM VERIFICATION TEST-VER 1. Power Seat System Verification Test
NO: Go To 8

8. CHECK THE (P113) DRIVER SEAT REAR VERTICAL DOWN DRIVER AN OPEN




Measure the resistance of the (P113) Driver Seat Rear Vertical Down Driver circuit at the Driver Rear Vertical Seat Adjuster Motor connector to the C3 connector.

Q: Is the resistance above 1.0 ohm?

YES: Repair the (P113) Driver Seat Rear Vertical Down Driver circuit for an open.
Perform POWER SEAT SYSTEM VERIFICATION TEST-VER 1. Power Seat System Verification Test
NO: Replace the Memory Seat Module.
Perform POWER SEAT SYSTEM VERIFICATION TEST-VER 1. Power Seat System Verification Test