B2366

DTC B2366

CIRCUIT DESCRIPTION
The sensor that sets this diagnostic trouble code (DTC) is either attached to the seat directional motor drive cable or directly to the motor it monitors. It receives a 5 volt reference and low reference from the memory seat module (MSM). The sensor sends a voltage signal that varies with the movement of the seat through the sensor signal circuit to the MSM. Then based on this voltage signal, the MSM determines the position of the seat.

CONDITIONS FOR RUNNING THE DTC
- The MSM must be powered and can not have B1327-Battery Voltage Low set as a current DTC for this DTC to set.
- This test will run only when the motors are active.

CONDITIONS FOR SETTING THE DTC
If the signal received by the MSM from a motor being driven in a commanded direction changes by more than 10 counts or 0.2 volts in the wrong direction, the MSM will set this DTC.

ACTION TAKEN WHEN THE DTC SETS
- Current and History codes are set.
- The MSM disables the affected motor during memory recall operations.
- The affected motor will respond to manual positioning commands.

CONDITIONS FOR CLEARING THE DTC
The MSM will clear the DTC as an active DTC whenever a manual switch is activated and the MSM sees that the sensor signal changes by more than 2 counts or 0.04 volts in the correct direction.

DIAGNOSTIC AIDS
All position sensors use common 5 Volt reference low reference circuits.

TEST DESCRIPTION

Steps 1-9:

The number(s) below refer to the step number(s) on the diagnostic table.
2. This step checks the direction in which the volts change as the switch is activated. The voltage should increase for the forward or up position and decrease for the rearward or down position.
4. This step checks the polarity of the seat or lumbar position sensor wiring.
5. This step checks the polarity of the seat or lumbar motor wiring.
6. This step checks the polarity of the seat or lumbar switch wiring.