DTC B1A65-B1A67 (Driver)

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 B1A65 Seat Memory Module Configuration 2 DTC B1A66 Seat Memory Module Configuration 3 DTC B1A67 Seat Memory Module Configuration 4 Diagnostic Fault Information

Circuit	Circuit Function	Short to Ground	Open/High Resistance	Short to Voltage	Signal Performance
2452	Signal	B1A66 11	—	B1A65 12	B1A67 1C

Circuit/System Description The Seat Adjuster Memory Module monitors the configuration circuit 2452 to determine the placement of the module with in the vehicle. The configuration circuit is a jumper circuit between two terminals of the Seat Adjuster Memory Module connector X3. Conditions for Running the DTC Vehicle ON / Vehicle in Service Mode. Battery Voltage 9–16 V Conditions for Setting the DTC B1A65 12 The Seat Adjuster Memory Module detects a short to battery on the configuration circuit 2452, which does not correspond to the calibrated module ID. B1A66 11 The Seat Adjuster Memory Module detects a short to ground on the configuration circuit 2452, which does not correspond to the calibrated module ID. B1A67 1C The Seat Adjuster Memory Module detects a voltage out of range on the configuration circuit  2452, which does not correspond to the calibrated module ID. Action Taken When the DTC Sets The Seat Adjuster Memory Module may disable memory, power seat, lumbar, and bolster functions. The Seat Adjuster Memory Module may not communicate or program correctly. Conditions for Clearing the DTC The current DTC will clear when the fault is no longer present and when the diagnostic runs and passes. The history DTC will clear after 40 consecutive fault-free Vehicle ON/OFF cycles have occurred. Reference Information Schematic Reference Driver Seat Schematics Connector End View Reference Master Electrical Component List Description and Operation Memory Seats Description and Operation Power Seats System Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Testing

1. Vehicle OFF, disconnect the X3 connector at the K40D Driver Seat Adjuster Memory Module.
2. Inspect the X3 harness connector and the module cavity for damage and corrosion. ⇒ If found to be damaged or corroded Repair the connector or module cavity. ⇓ If found to be in good condition
3. Replace the appropriate K40D Driver Seat Adjuster Memory Module. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair. Control Module References for Control Module replacement, programming and setup