Inspection Procedure

1. Disconnect the ACC, ECU-B and ECU-IG fuses from the driver side junction block.
2. Measure the resistance of the fuses.

   Standard resistance: Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to Next Step 

1. Disconnect the M13 display connector.
2. Measure the resistance and voltage of the wire harness side connector.

   Standard resistance 

   STANDARD RESISTANCE REFERENCE CHART
   
   

   Tester Connection	Specified Condition
   M13-1 (GND1) - Body ground	Below 1 Ω

   Standard voltage 

   VOLTAGE CHART
   
   

   Tester Connection	Condition	Specified Condition
   M13-3 (+B1) - Body ground	Always	10 to 14 V
   M13-2 (ACC) - Body ground	Power switch ON (ACC)	10 to 14 V
   M13-10 (IG) - Body ground	Power switch ON (IG)	10 to 14 V

   Fig 1: Disconnecting M13 Display Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN  PROBLEM SYMPTOMS TABLE