B2128

Description

Driver seat control unit performs UART communication with the automatic drive positioner control unit using 1
communication lines. Driver seat control unit receives the operation signals of tilt & telescopic switch, door mirror remote control switch, and the position signals of door mirror sensor from the automatic drive positioner control unit and transmits the operation request signal.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. STEP 1

Turn ignition switch ON.
- GO TO 2.

2. PROCEDURE

Check "Self diagnostic result" using CONSULT.
Is the DTC detected?
YES- Perform diagnosis procedure. Refer to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON.
2.Check "Self diagnostic result" using CONSULT.
3.Erase the DTC.
4.Perform DTC confirmation procedure. Refer to "DTC Logic" B2116.
Is the DTC displayed again?
YES- GO TO 2.
NO- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.

2. CHECK UART COMMUNICATION LINE CONTINUITY

1.Turn ignition switch OFF.
2.Disconnect driver seat control unit and automatic drive positioner control unit connector.
3.Check continuity between driver seat control unit harness connector and automatic drive positioner control unit harness connector.





4.Check continuity between driver seat control unit harness connector and ground.





Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace harness or connector.