Inspection Procedure

1. Measure the voltage of the display.

   Standard voltage 

   TESTER CONNECTION AND SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   M14-4 (MACC) - Body ground	Power switch ON (ACC)	10 to 14 V

NG : REPLACE MULTI-DISPLAY 

Fig 1: Checking Multi-Display (MACC Voltage)

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OK : GO TO NEXT STEP 

1. Disconnect the M14 display connector.
2. Disconnect the O3 junction block connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION AND SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   M14-4 (MACC) - O3-7 (ACC)	Below 1 Ω
   M14-2 (MIN+) - O3-8 (MI1+)	Below 1 Ω
   M14-3 (MIN-) - O3-9 (MIC-)	Below 1 Ω
   M14-4 (MACC) - Body ground	10 kΩ or higher
   M14-2 (MIN+) - Body ground	10 kΩ or higher
   M14-3 (MIN-) - Body ground	10 kΩ or higher

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 2: Checking Wire Harness (Multi-Display - Overhead Junction Block)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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