B1785

For wiring diagrams, refer to Memory Seats Schematics (Seat Adjuster Memory Module, Transducers, Motors).

Diagnostic Chart:

CIRCUIT DESCRIPTION
The seat adjuster memory module controls the seat recliner motor power and ground through CKT 276 (LT GRN) and CKT 277 (LT BLU). The seat adjuster memory module also senses the seat recliner motor position through a hall sensor within the motor through CKT 570 (WHT/BLK) while utilizing CKT 570A (BLK) as a sensor ground.

CONDITIONS FOR SETTING THE DTC
The DTC will set if the seat adjuster memory module detects through the hall sensor that the recliner motor is not responding to the seat adjuster memory module commands due to the following conditions:
^ An open circuit
^ A short to ground
^ A short to power
^ An inoperative motor

CONDITIONS FOR CLEARING THE DTC
^ A history DTC will clear after 100 consecutive fault free ignition cycles.
^ Use a scan tool in order to clear history and current DTCs.

DIAGNOSTIC AIDS
One or more of the following conditions may be the cause of an intermittent failure:
^ A poor connection
^ A break in the wire insulation that exposes the internal wire
^ A wire broken inside the insulation

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table.
2. This step inspects for current DTCs.
3. This step locates and repairs the open(s) in the wiring between the seat recliner motor and the seat adjuster memory module.
4. This step locates and repairs the short(s) to ground in the wiring between the seat recliner motor and the seat adjuster memory module.
5. This step verifies that the seat adjuster memory module is supplying voltage to the seat recliner motor.
6. This step replaces a defective seat recliner motor.
7. This step replaces a defective seat adjuster memory module.