Inspection Procedure

1. Turn the ignition switch off.
2. Disconnect the ECM connector (D41).
3. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying ECM Connector (D41) CAN Bus Wire Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   CONNECTOR TERMINAL RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified value
   D41-33 (CANH) - D41-34 (CANL)	Ignition switch off	108 to 132 Ω

NG: REPAIR OR REPLACE ECM MAIN BUS LINE OR CONNECTOR (CAN-H, CAN-L) 

OK: Go to Next Step 

1. Reconnect the ECM connector (D41).
2. Disconnect the ECM connector (A24) (B45).
3. Measure the resistance and voltage according to the value(s) in the table below.
   Fig 2: Identifying ECM Connectors (A24) And (B45) Power And Ground Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   CONNECTOR TERMINAL RESISTANCE AND VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   B45-1 (E1) - Body ground	Always	Below 1 Ω
   A24-1 (+B) - Body ground	Ignition switch on (IG)	10 to 14 V
   A24-2 (+B2) - Body ground	Ignition switch on (IG)	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ECM