Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC B1335 00: Device Power 3 CircuitDTC 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 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, lumbar and adjustable pedal motors do 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
| • | The current DTC will clear and set the code to history, 3 seconds after no motor movement is requested or the current is no longer mismatched, and the ignition is cycled OFF then back to ACC or RUN. |
| • | The history DTC will clear after 50 consecutive fault-free ignition cycles have occurred. |
Reference Information
Schematic Reference
Connector End View Reference
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
- Ignition ON, use a scan tool to clear the current and history diagnostic trouble code.
- 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.
- Clear the diagnostic trouble codes.
- Ignition OFF, disconnect the X1 harness connector at the appropriate seat adjuster assembly, lumbar adjuster assembly, or the adjustable pedal motor for which the DTC set.
- Ignition ON, operate the motor adjuster switch in both directions. DTC B1335 00 or B1335 0B should not set.
- Test the appropriate control circuits listed below for a high resistance. If all circuits test normal, test or replace the appropriate seat, lumbar, or adjustable pedal motor.
| • | 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 |
| ⇒ | If the DTC sets, test for a short between appropriate motor 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 A and terminal B |
| • | Lumbar vertical motor terminal A and terminal B |
| • | Lumbar horizontal motor terminal C and terminal D |
| • | Adjustable pedal motor terminal 4 and terminal 5 |
| • | 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 A and terminal B |
| • | Lumbar vertical motor terminal A and terminal B |
| • | Lumbar horizontal motor terminal C and terminal D |
| • | 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.
| ⇒ | If either DTCs is set, replace the MSM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for MSM replacement, setup, and programming |
