Inspection Procedure

1. Disconnect the D MPX-B 2 fuse from the main body ECU.
2. Disconnect the P-ACC fuse from the passenger side junction block.
3. Measure the resistance of the fuses.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   D MPX-B 2 fuse	Always	Below 1 Ω
   P-ACC fuse	Always	Below 1 Ω

NG: REPLACE FUSE 

OK: GO TO NEXT STEP 

1. Disconnect the L51 receiver connector.
   Fig 1: Identifying Receiver Battery And Body Ground Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   L51-20 (GND) - Body ground	Always	Below 1 Ω

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

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Switch Condition	Specified Condition
   L51-1 (B) - Body ground	Always	11 to 14 V
   L51-11 (ACC) - Body ground	Engine switch on (ACC)	11 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   )