Seats

Diagnostic Chart:

Schematic:

CIRCUIT DESCRIPTION
The memory seat module controls the driver seat recliner adjuster motor by providing voltage and ground to the adjuster motor supply circuits. The direction of seat adjustment is determined by the polarity of the adjuster motor supply circuits. The memory seat module uses position sensors for storing and recalling memory seat position settings. The position sensor is an internal part of the recliner adjuster motor. The memory seat module provides a 5 volt reference and low reference to the recliner position sensor, and monitors the recliner position sensor signal circuit which varies from 0 to 5 volts depending on the seat position.

CONDITIONS FOR SETTING THE DTC
DTC 12 will set if:
^ The driver seat recliner adjuster motor position sensor signal voltage is not within 0.1 to 4.9 volts.
^ The recliner adjuster motor is open or shorted.
^ The memory seat module is faulty.

ACTION TAKEN WHEN THE DTC SETS
DTC 12 will set, and the seat recliner adjuster motor memory operation will be disabled.

CONDITIONS FOR CLEARING THE DTC
DTC 12 will be stored as a history code when the fault is no longer present.

DIAGNOSTIC AIDS
^ Inspect for mechanical conditions which may prevent the recliner adjuster motor from operating properly.
^ Inspect the connectors at the memory seat module for damage or poor terminal connections.

TEST DESCRIPTION
The following numbers refer to the step numbers on the diagnostic table:
2. This step determines if the DTC is the result of an adjuster motor malfunction.