Inspection Procedure

1. Remove the AM2 fuse from the engine room J/B.
2. Measure the resistance of the fuse.

   Standard resistance: Below 1 Ω 

NG: REPLACE FUSE 

OK: Go to Next Step 

1. Check that the connectors are securely connected and the terminals are not deformed or loose.

   OK: The connectors are securely connected and the terminals are not deformed or loose. 

NG: REPAIR OR REPLACE CONNECTORS 

OK: Go to Next Step 

1. Disconnect the E60 and E61 ECU connectors.
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection (Symbols)	Condition	Specified Condition
   E61-6 (AM1) - Body ground	Always	10 to 14 V
   E60-1 (AM2) - Body ground	Always	10 to 14 V

Fig 1: Identifying Main Body ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

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

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection (Symbols)	Condition	Specified Condition
   DF-10 (GND1) - Body ground	Always	Below 1 Ω

Fig 2: Identifying Main Body ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Remove the IG2 relay from the engine room R/B No. 2.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   3 - 5	10 kΩ or higher
   3 - 5	Below 1 Ω (When battery voltage is applied to terminals 1 and 2)

Fig 3: Identifying IG2 Relay Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RELAY 

OK: Go to Next Step 

1. Remove the IG2 relay from the engine room R/B.
   Fig 4: Identifying Main Body ECU And IG2 Relay Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the E60 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Terminal No. (Symbol)	Specified Condition
   Engine room R/B IG2 relay terminal 1 - E60-11 (IG2D)	Below 1 Ω
   Engine room R/B IG2 relay terminal 2 - Body ground	Below 1 Ω
   E60-11 (IG2D) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Remove the IG1 relay from the instrument panel J/B.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   3 - 5	10 kΩ or higher
   3 - 5	Below 1 Ω (when battery voltage is applied to terminals 1 and 2)

Fig 5: Identifying IG1 Relay Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RELAY 

OK: Go to Next Step 

1. Disconnect the Dl J/B connector.
   Fig 6: Identifying Main Body ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the E61 ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Terminal No. (Symbol)	Condition	Specified Condition
   DI-9 - E61-3 (IG1D)	Always	Below 1 Ω
   E61-3 (IG1D) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Disconnect the DF and DA J/B connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Terminal No.	Condition	Specified Condition
   DF-10 - Body ground	Always	Below 1 Ω

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

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Terminal No.	Condition	Specified Condition
   DA-1 - Body ground	Always	10 to 14 V

Fig 7: Identifying Instrument Panel J/B Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 8: Identifying Instrument Panel J/B Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Terminal No.	Condition	Specified Condition
   DF-10 - IG1 relay terminal-1	Always	Below 1 Ω
   DI-9 - IG1 relay terminal-2	Always	Below 1 Ω
   DF-10 - Body ground	Always	10 kΩ or higher
   DI-9 - Body ground	Always	10 kΩ or higher

OK: REPLACE MAIN BODY ECU 

NG: REPLACE INSTRUMENT PANEL J/B