Inspection Procedure

1. Remove the D MPX-B1 fuse from the main body ECU.
2. Remove the P IG2 fuse from the passenger side junction block.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   FUSE (D MPX-B1, P IG2)
   
   

   Tester Connection	Condition	Specified Condition
   D MPX-B1 fuse	Always	Below 1 Ω
   P IG2 fuse

NG: REPLACE FUSE 

OK: GO TO NEXT STEP 

1. Disconnect the L10 ECU connector.
2. Measure the resistance and voltage according to the value(s) in the table below.

   Standard resistance 

   NO. 1 METER ECU - BATTERY AND BODY GROUND RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   L10-17 (E2) - Body ground	Always	Below 1 Ω
   L10-18 (ES) - Body ground

   Fig 1: Identifying Terminals Of L10 ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   NO. 1 METER ECU - BATTERY AND BODY GROUND VOLTAGE
   
   

   Tester Connection	Switch Condition	Specified Condition
   L10-14 (IG2) - Body ground	Engine switch on (IG)	11 to 14 V
   L10-13 (B) - Body ground	Always

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE NO. 1 METER ECU