Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM - JAPAN PRODUCTION , or WIRING DIAGRAM - USA PRODUCTION .

1. PERFORM DTC CONFIRMATION PROCEDURE
   
   

   CONSULT

   1. Turn ignition switch ON.
   2. Check "Self Diagnostic Result" mode of "AUTO DRIVE POS.".
   3. Erase the DTC.
   4. Perform DTC confirmation procedure. Refer to DESCRIPTION .

   Is the DTC displayed again?

   YES 

   GO TO STEP 2. 

   NO 

   Check intermittent incident. Refer to 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.
   3. Check continuity between driver seat control unit harness connector and automatic drive positioner control unit harness connector.

      Driver seat control unit		Automatic drive positioner control unit		Continuity
      Connector	Terminal	Connector	Terminal
      B213	2	M99	8	Yes

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

      Driver seat control unit		Ground	Continuity
      Connector	Terminal
      B213	2		No

   Is the inspection result normal?

   YES 

   Check intermittent incident. Refer to INTERMITTENT INCIDENT .

   NO 

   Repair or replace harness.