B1335
DTC B1335
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* ReviewStrategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
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/System Description
The memory seat module (MSM) monitors the current supplied to the driver seat adjuster motors, recline motor and lumbar horizontal 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 seat motors does not match the current returning from the motors.
Conditions for Running the DTC
The seat adjuster motors, recline motor or the lumbar horizontal motor 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 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
Driver Seat Schematics (Driver Seat Schematics)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Memory Seats Description and Operation (Memory Seats Description and Operation)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
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
3. Clear the diagnostic trouble codes.
4. Ignition OFF, disconnect the harness connector at the appropriate seat or lumbar motor for which the DTC set.
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 appropriate motor control circuits listed below. If the circuits test normal, replace the MSM.
* Driver seat front vertical motor terminal 2 and terminal 5
* Driver seat rear vertical motor terminal 1 and terminal 4
* Driver seat horizontal motor terminal 3 and terminal 6
* Driver seat recline motor terminal A and terminal B
* Driver seat lumbar horizontal motor terminal A and terminal B
6. Test the appropriate control circuits listed below for a high resistance. If the circuits test normal, test or replace the seat or lumbar motor.
* Driver seat front vertical motor terminal 2 and terminal 5
* Driver seat rear vertical motor terminal 1 and terminal 4
* Driver seat horizontal motor terminal 3 and terminal 6
* Driver seat recline motor terminal A and terminal B
* Driver seat lumbar horizontal motor terminal A and terminal B
B1335 42 or B1335 4B
If either DTC is set, replace the MSM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Front Seat Adjuster Replacement (Front Seat Adjuster Replacement)
* Front Seat Recliner Actuator Motor Replacement (Front Seat Recliner Actuator Motor Replacement)
* Front Seat Lumbar Support Replacement (w/AL2) (Front Seat Lumbar Support Replacement (w/AL2))Front Seat Lumbar Support Replacement (w/AM3) (Front Seat Lumbar Support Replacement (w/AM3))
* Control Module References (Programming and Relearning) for MSM replacement, setup, and programming