Power Seats - Memory SW INOP (Driver Switch INOP, DTC 21 Set)

Diagnostic Trouble Code Test (Part 1 Of 2):

Diagnostic Trouble Code Test (Part 2 Of 2):

Wiring Schematic:

CIRCUIT DESCRIPTION
The driver seat adjuster memory module monitors the voltage of the circuits to the driver seat adjuster switch. When the voltage value on these circuits is not within the specified value, the driver seat adjuster memory module will set DTC 21.

CONDITIONS FOR SETTING THE DTC
DTC 21 will set if:
^ the individual switches on the driver seat adjuster switch are shorted or jammed or its circuits are faulty.
^ the driver seat adjuster memory module is faulty.

ACTIONS TAKEN WHEN THE DTC SETS
DTC 21 will set and the driver seat will become disabled.

CONDITIONS FOR CLEARING THE DTC
DTC 21 will clear when the fault is no longer present.

DIAGNOSTIC AIDS
^ Check for liquid damage or any other type of physical damage that may have occurred to the driver seat adjuster switch.
^ Check for loose connections at the driver seat adjuster memory module.

TEST DESCRIPTION
The following numbers refer to the step numbers on the diagnostic table:
2. This step checks for a short between the terminals of the driver seat adjuster switch.
3. This step checks for a short between the terminals of the driver seat adjuster switch.
4. This step replaces the driver seat adjuster switch.
5. This step checks the individual switches of the driver seat adjuster switch.
6. This step checks the motor.