2010 Cadillac Truck SRX FWD V6-3.0L Page 735

2010 Cadillac Truck SRX FWD V6-3.0L Page 735

* M50D front vertical motor up control terminal 7 X4

* M50D front vertical motor down control terminal 8 X4

* M55D rear vertical motor up control terminal 4 X5

* M55D rear vertical motor down control terminal 3 X5

* M51D horizontal motor forward control terminal 2 X5

* M51D horizontal motor rearward control terminal 1 X5

* M56D recline motor forward control terminal 5 X5

* M56D recline motor rearward control terminal 6 X5

* M5 adjustable pedal motor forward control terminal 7 X5

* M5 adjustable pedal motor rearward control terminal 8 X5

瀚慖f not the specified value, test the control circuit for a short to ground.

3. Ignition ON, verify that a test lamp does not illuminate between the control circuit terminals listed below and ground:

* M50D front vertical motor up control terminal 7 X4

* M50D front vertical motor down control terminal 8 X4

* M55D rear vertical motor up control terminal 4 X5

* M55D rear vertical motor down control terminal 3 X5

* M51D horizontal motor forward control terminal 2 X5

* M51D horizontal motor rearward control terminal 1 X5

* M56D recline motor forward control terminal 5 X5

* M56D recline motor rearward control terminal 6 X5

* M5 adjustable pedal motor forward control terminal 7 X5

* M5 adjustable pedal motor rearward control terminal 8 X5

瀚慖f the test lamp illuminates, test the control circuit for a short to voltage.

4. If all circuits test normal, replace the K40 seat memory control module.

B3920 00 or B3920 0B

1. Ignition ON, use a scan tool to clear the current and history DTC.

2. Determine which motor set this DTC by operating the driver seat motors and adjustable pedals motor listed below one at a time in both

directions. Check for the DTC to set between each motor test.

* M50D seat front vertical motor

* M55D seat rear vertical motor

* M51D seat horizontal motor

* M56D seat back recline motor

* M5 adjustable pedals motor

3. Clear the diagnostic trouble code.

4. Ignition OFF, disconnect the harness connector at the appropriate seat or adjustable pedal motor for which the DTC set.

5. Ignition ON, operate the appropriate motor adjuster switch in both directions. DTC B3920 00 or B3920 0B should not set.

瀚慖f the DTC sets, test for a short between the appropriate control circuit terminals listed below. If the circuits test normal, replace the K40

seat memory control module.

* Seat motors terminal 1 and terminal 5

* M5 adjustable pedal motor terminal 2 and terminal 3

6. Test the appropriate control circuit terminals listed below for a high resistance.

* Seat motors terminal 1 and terminal 5

* M5 adjustable pedal motor terminal 2 and terminal 3

瀚慖f the circuits test normal, test or replace the appropriate seat or adjustable pedal motor.

B3920 42

If this DTC is set, replace the K40 seat memory control module.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Driver or Passenger Seat Cushion Frame Replacement (See: Body and Frame/Seats/Service and Repair/Removal and Replacement/Driver or

Passenger Seat Cushion Frame Replacement)

* Brake and Accelerator Pedal Adjuster Actuator Motor Replacement (See: Accessories and Optional Equipment/Pedal Positioning