Inspection Procedure

1. Remove the body ECU from instrument panel J/B.
2. Measure the resistance according to the value(s) in the table below.

   Resistance 

   RESISTANCE REFERENCE CHART
   
   

   Tester Connection	Condition	Specified Condition
   4 (GND2) - Body ground 5 (GND1) - Body ground	Always	Below 1 Ω

3. Measure the voltage according to the value(s) in the table below.

   Voltage 

   Fig 1: Identifying Instrument Panel J/B

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   26 (BECU) - Body ground	Always	10 to 14 V
   22 (ACC) - Body ground	Ignition switch ACC	10 to 14 V
   15 (IG) - Body ground	Ignition switch on (IG)	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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