Inspection Procedure

1. Disconnect the E2 meter connector.
2. Measure the voltage according to the value(s) in the table below.

   Voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   E2-1 - Body ground	Always	10 to 14 V
   E2-2 - Body ground		10 to 14 V

3. Measure the resistance according to the value(s) in the table below.
   Fig 1: Identifying Combination Meter ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   E2-10 - Body ground	Always	Below 1 Ω
   E2-12 - Body ground		Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step. 

1. Disconnect the E2, E23 and 1G ECU connectors.
2. Measure the resistance according to the value(s) in the table below.

   Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Condition	Condition	Specified Condition
   E2-4 - E23-12 (MPD2)	Always	Below 1 Ω
   E2-16 - IG-7		Below 1 Ω

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Both are OK	A
   One is OK	B
   Both are NG	C

B : REPLACE COMBINATION METER ECU AND REPAIR OR REPLACE HARNESS OR CONNECTOR 

C : REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying Combination Meter ECU And Gateway ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

A : REPLACE COMBINATION METER ECU