Diagnostic Instructions

DTC Descriptors

DTC B1335 0B: Device Power 3 Circuit Current Above Threshold

DTC B1335 42: Device Power 3 Circuit Calibration Data Set Not Programed

DTC B1335 4B: Device Power 3 Circuit Calibration Not Learned

Diagnostic Fault Information

Circuit	Short to Ground	High Resistance	Open	Short to Voltage	Signal Performance
Adjustable Pedal Motor Forward Control	B3920 02	B1335 0B	3	B3920 01	B1335 42, B1335 4B, B3606 5A
Adjustable Pedal Motor Rearward Control	B3920 02	B1335 0B	3	B3920 01	B1335 42, B1335 4B, B3606 5A
Driver Seat Front Vertical Motor Down Control	B3920 02	B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2355 5A
Driver Seat Front Vertical Motor Up Control	B3920 02	B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2355 5A
Driver Seat Rear Vertical Motor Down Control	B3920 02	B1335 00, B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2365 5A
Driver Seat Rear Vertical Motor Up Control	B3920 02	B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2365 5A
Driver Seat Horizontal Motor Forward Control	B3920 02	B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2375 5A
Driver Seat Horizontal Motor Rearward Control	B3920 02	B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2375 5A
Driver Seat Recline Motor Forward Control	B3920 02	B1335 0B	1	B3920 01	B1335 42, B1335 4B, B1825 5A
Driver Seat Recline Motor Rearward Control	B3920 02	B1335 0B	1	B3920 01	B1335 42, B1335 4B, B1825 5A
Driver Seat Lumbar Motor Forward Control	B3920 02	B1335 0B	2	B3920 01	B1335 42, B1335 4B, B1850 5A
Driver Seat Lumbar Motor Rearward Control	B3920 02	B1335 0B	2	B3920 01	B1335 42, B1335 4B, B1850 5A
1. Power seat motor inoperative 2. Lumbar motor inoperative 3. Adjustable pedal motor inoperative

Circuit/System Description

The memory seat module (MSM) monitors the current supplied to the driver seat adjuster motors, recline motor, lumbar motor, and the adjustable pedal motor. It can detect both absolute and differential current levels from the motors. Absolute current is the maximum allowable current the module will supply to the motors. A differential current mismatch occurs when the current supplied to the motors does not match the current returning from the motors.

Conditions for Running the DTC

The motors must be active.

Conditions for Setting the DTC

B1335 0B

The absolute current or an over-current has exceeded the maximum value allowed.

B1335 42

This DTC will set if the module calibration is not programmed.

B1335 4B

This DTC will set if the module calibration is out of range.

Action Taken When the DTC Sets

All movement related to the seat, recline, lumbar, adjustable pedals motors are aborted.

Conditions for Clearing the DTC

Reference Information

Schematic Reference

Connector End View Reference

Component Connector End Views

Description and Operation

Memory Seats Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References

Circuit/System Testing

B1335 0B

1. Ignition ON, use a scan tool to clear the current and history diagnostic trouble code.
2. Determine which motor set this DTC by operating the motors listed below one at a time in both directions. Check for the DTC to set between each motor test.

•	Driver seat front vertical motor

•	Driver seat rear vertical motor

•	Driver seat horizontal motor

•	Driver seat recline motor

•	Driver seat lumbar horizontal motor

•	Adjustable pedal motor

3. Clear the current and history diagnostic trouble code.
4. Ignition OFF, disconnect the harness connector at the appropriate motor listed below for which the DTC set.

•	Driver seat front vertical motor X1

•	Driver seat rear vertical motor X1

•	Driver seat horizontal motor X1

•	Driver seat recline motor X2

•	Driver seat lumbar motor

•	Adjustable pedal motor

5. Ignition ON, operate the motor adjuster switch in both directions. DTC B1335 0B should not set.

⇒	If the DTC sets, test for a short between the motor control circuits terminal A and terminal B. If the circuits test normal, replace the MSM.

6. Test the control circuits terminal A and terminal B for a high resistance. If all circuits test normal, test or replace the appropriate seat, lumbar, or adjustable motor.

B1335 42 or B1335 4B

If either DTC is set, replace the MSM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.