B1826

CIRCUIT DESCRIPTION
The recline seat motor is equipped with a potentiometer type position sensor used by the memory seat module to determine the seat recline position. The recline motor position sensor is supplied with 5-volt reference and ground circuits from the memory seat module. The position sensor signal circuit is supplied 5-volts through a resistor then monitored within the memory seat module. The signal voltage monitored by the memory seat module ranges from 0.39 - 4.58 volts and is determined by the wiper location on the resistor within the recline motor position sensor. The recline motor position sensor circuit voltage level is used by the memory seat module to determine the seat recline position when storing or recalling memory seat position settings.

CONDITIONS FOR RUNNING THE DTC
The system voltage must be between 9.0 and 16.0 volts.

CONDITIONS FOR SETTING THE DTC
The recline motor position sensor circuit voltage level to the memory seat module is not within the 0.39-4.58 volt range.

ACTION TAKEN WHEN THE DTC SETS
The recline motor memory functions will be disabled for as long as the fault is current.

CONDITIONS FOR CLEARING THE DTC
^ The DTC will be current for as long as the fault is present.
^ When the fault is no longer present the DTC will be a history status code.
^ The history DTC will be cleared after 100 error free ignition cycles, or by using the scan tool clearing DTCs feature.

TEST DESCRIPTION

Steps 1-5:

Steps 6-15:

The numbers below refer to the step numbers on the diagnostic table.
3. Tests for the proper operation of the signal circuit in the high voltage range.
4. Tests for the proper operation of the signal circuit in the low voltage range. If the fuse in the jumper opens upon performing this test, the signal circuit has a short to voltage.
5. Tests for a short to ground in the 5-volt reference circuit.