Inspection Procedure

HINT:

Start the inspection from step  1 in the case of using the hand-held tester, and start from step  2 in the case of not using the hand-held tester.

1. READ VALUE OF HAND-HELD TESTER 
   1. Connect the hand-held tester to DLC3.
   2. Turn the ignition switch ON and push the hand-held tester main switch ON.
   3. Select the items below in the DATA LIST, and read the displays on the hand-held tester.

   BODY NO.1: 

   AUTOMATIC LIGHT CONTROL SENSOR DIAGNOSIS PROCEDURE
   
   

   Item	Measurement Item/ Display (Range)	Normal Condition	Diagnostic Note
   LIGHT CTRL TYPE	Light control type/ CRNT or OLD	Customized sign can be displayed.	-

   1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  
   2. NG: GO TO NEXT STEP 
2. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK BODY ECU - AUTOMATIC LIGHT CONTROL SENSOR) 
   1. Check for open or short circuit in the harness and the connector between the terminal 6 of the automatic light control sensor and the terminal B6-6 of the multiplex network body ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
   2. Check for open or short circuit in the harness and the connector between the terminal 3 of the automatic light control sensor and the terminal B6-4 of the multiplex network body ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
   3. Check for open or short circuit in the harness and the connector between the terminal 5 of the automatic light control sensor and the terminal B6-5 of the multiplex network body ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
   1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
   2. OK: GO TO NEXT STEP 
3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSY 
   1. Measure voltage between the terminal B6-4 and the terminal B6-6 of the multiplex network body ECU in the instrument panel junction block assy.

      Standard: 

      Fig 1: Instrument Panel Junction Block Table

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 2: Identifying Instrument Panel Junction Block Assy

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. NG: REPLACE AUTOMATIC LIGHT CONTROL SENSOR 
   2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE