Diagnostic Instructions

DTC Descriptors

DTC B1335 00: Device Power 3 Circuit

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 00, B1335 0B	3	B3920 01	B1335 42, B1335 4B, B3606 5A
Adjustable Pedal Motor Rearward Control	B3920 02	B1335 00, B1335 0B	3	B3920 01	B1335 42, B1335 4B, B3606 5A
Driver Seat Front Vertical Motor Down Control	B3920 02	B1335 00, B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2355 5A
Driver Seat Front Vertical Motor Up Control	B3920 02	B1335 00, 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 00, B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2365 5A
Driver Seat Horizontal Motor Forward Control	B3920 02	B1335 00, B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2375 5A
Driver Seat Horizontal Motor Rearward Control	B3920 02	B1335 00, B1335 0B	1	B3920 01	B1335 42, B1335 4B, B2375 5A
Driver Seat Recline Motor Forward Control	B3920 02	B1335 00, B1335 0B	1	B3920 01	B1335 42, B1335 4B, B1825 5A
Driver Seat Recline Motor Rearward Control	B3920 02	B1335 00, B1335 0B	1	B3920 01	B1335 42, B1335 4B, B1825 5A
Driver Seat Lumbar Motor Up Control	B3920 02	B1335 00, B1335 0B	2	B3920 01	B1335 42, B1335 4B, B1860 5A
Driver Seat Lumbar Motor Down Control	B3920 02	B1335 00, B1335 0B	2	B3920 01	B1335 42, B1335 4B, B1860 5A
Driver Seat Lumbar Motor Forward Control	B3920 02	B1335 00, B1335 0B	2	B3920 01	B1335 42, B1335 4B, B1850 5A
Driver Seat Lumbar Motor Rearward Control	B3920 02	B1335 00, 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 seat adjuster motors. The MSM can detect both absolute and differential current levels from the seat 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 seat motors does not match the current returning from the motors.

Conditions for Running the DTC

The MSM establishes that it is not closing to a shorted motor control circuit before the motors are active.

Conditions for Setting the DTC

B1335 00

Current out of the module does not match the current returning to the module within 5 amps.

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

The adjustable pedal motor and all driver seat adjuster motors are disabled.

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 for scan tool information

Circuit/System Testing

DTC B1335 00 or 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

•	Driver seat lumbar vertical motor

•	Adjustable pedal motor

3. Clear the diagnostic trouble codes.
4. Ignition OFF, disconnect the harness connector at the appropriate seat, lumbar, or adjustable pedal motor listed below for which the DTC set.

•	Seat adjuster assembly X1

•	Lumbar motor

•	Recline motor

•	Adjustable pedal assembly

5. Ignition ON, operate the motor adjuster switch in both directions. DTC B1335 00 or B1335 0B should not set.

⇒	If the DTC sets, test for a short between appropriate control circuits listed below. If the circuits test normal, replace the MSM.

•	Front vertical motor terminal 2 and terminal 5

•	Rear vertical motor terminal 1 and terminal 4

•	Seat horizontal motor terminal 3 and terminal 6

•	Seat recline motor terminal 1 and terminal 2

•	Lumbar vertical motor terminal 1 and terminal 2

•	Lumbar horizontal motor terminal 1 and terminal 2

•	Adjustable pedal motor terminal 4 and terminal 5

6. Test the appropriate control circuits listed below for a high resistance. If all circuits test normal, test or replace the seat, lumbar, or adjustable pedal motor.

•	Front vertical motor terminal 2 and terminal 5

•	Rear vertical motor terminal 1 and terminal 4

•	Seat horizontal motor terminal 3 and terminal 6

•	Seat recline motor terminal 1 and terminal 2

•	Lumbar vertical motor terminal 1 and terminal 2

•	Lumbar horizontal motor terminal 1 and terminal 2

•	Adjustable pedal motor terminal 4 and terminal 5

DTC B1335 42 or B1335 4B

Verify that DTC B1335 42 or B1335 4B is not set.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.