Inspection Procedure

1. Remove the body ECU from instrument panel J/B.
   Fig 1: Removing Body ECU From Instrument Panel J/B

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. Measure the resistance according to the value(s) in the table below.
   RESISTANCE SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   4, 5 (GND) - Body ground	Always	Below 1

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

   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