Inspection Procedure

1. Disconnect the instrument panel J/B (IA, ID) connectors.
2. Measure the voltage according to the value(s) in the table below.

   Voltage 

   VOLTAGE REFERENCE CHART
   
   

   Tester Connection	Condition	Specified Condition
   IA-1 (BATB) - Body ground	Always	10 to 14 V
   ID-10 (BECU) - Body ground	Always	10 to 14 V
   ID-16 (ALTB) - Body ground	Always	10 to 14 V

Fig 1: Identifying Instrument Panel J/B (IA, ID) Connectors

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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (BATB, BECU OR ALTB CIRCUIT) 

OK: Go to Next Step 

1. Disconnect the instrument panel J/B (IF, IM) connectors.
2. Measure the resistance according to the value(s) in the table below.

   Resistance 

   RESISTANCE REFERENCE CHART
   
   

   Tester Connection	Condition	Specified Condition
   IF-10 (GND1) - Body ground	Always	Below 1 Ω
   IM-9 (GND2) - Body ground	Always	Below 1 Ω

Fig 2: Identifying Instrument Panel J/B (IF, IM) Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (GND CIRCUIT) 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  .