Combination Meter ECU Communication Stop Mode: Procedure

1. Turn the ignition switch off.
   Fig 1: Checking Combination Meter ECU E55 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector: (to Combination Meter)

2. Disconnect the combination meter connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   E55-27 (CANH) - E55-28 (CANL)	Ignition switch off	108 to 132 Ω

NG → REPAIR OR REPLACE CAN BUS MAIN WIRE OR CONNECTOR (COMBINATION METER MAIN BUS WIRE) 

OK: Go to next step 

1. Disconnect the combination meter connector.
   Fig 2: Checking Combination Meter ECU E55 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector: (to Combination Meter)

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E55-30 (ET) - Body ground	Always	Below 1 Ω

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E55-33 (IG+) - Body ground	Ignition switch ON	10 to 14 V
   E55-32 (B) - Body ground	Always	10 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   3