Inspection Procedure

1. Turn the ignition switch ON
2. Measure the voltage of the ECM connectors.

   Standard voltage 

   STANDARD VOLTAGE
   
   

   Tester Connection	Specified Condition
   +B (E9-1) - E1 (E7-1)	9 to 14 V

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

Fig 1: Checking ECM (+B Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to Next Step 

1. Disconnect the E7 ECM connector.
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Specified Condition
   E1 (E7-1) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Checking Harness And Connector (ECM - Body Ground)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Turn the ignition switch ON.
2. Measure the voltage of the ECM connectors.

   Standard voltage 

   STANDARD VOLTAGE
   
   

   Tester Connection	Specified Condition
   IGSW (E9-9) - E1 (E7-1)	9 to 14 V

OK: Go to step  6

Fig 3: Checking ECM (IGSW Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to Next Step 

1. Remove the IGN fuse from the driver side J/B.
2. Measure the resistance of the IGN fuse.

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

Fig 4: Inspecting Fuse (IGN)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Remove the lower finish panel.
2. Disconnect the 118 ignition switch connector.
3. Measure the resistance of the ignition switch.

   Standard resistance 

   STANDARD RESISTANCE
   
   

   Switch position	Tester Connection	Specified Condition
   LOCK	All Terminals	10 kΩ or higher
   ACC	2-3	Below 1 Ω
   ON	2-3, 2-4 6-7
   START	1-2, 2-4 6-7, 7-8

4. Reconnect the ignition switch connector.
   Fig 5: Inspecting Ignition Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE IGNITION SWITCH ASSEMBLY 

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - IGNITION SWITCH, IGNITION SWITCH - ECM) 

1. Turn the ignition switch ON.
2. Measure the voltage of the ECM connectors.

   Standard voltage 

   STANDARD VOLTAGE
   
   

   Tester Connection	Specified Condition
   MREL (E9-8) - E1 (E7-1)	9 to 14 V

NG: REPLACE ECM 

Fig 6: Checking ECM (MREL Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Remove the EFI fuse from the engine room R/B.
2. Measure the resistance of the EFI fuse.

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

Fig 7: Inspecting Fuse (EFI)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Remove the EFI relay from the engine room junction block.
2. Measure the resistance of the EFI relay.

   Standard resistance 

   STANDARD RESISTANCE
   
   

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

3. Reinstall the EFI relay.
   Fig 8: Inspecting EFI Relay (Marking - EFI)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE EFI RELAY 

OK: Go to Next Step 

1. Disconnect the E9 ECM connector.
2. Measure the resistance between the wire harness side connector and body ground.

   Standard resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Specified Condition
   MREL (E9-8) - Body ground	Below 1 Ω

3. Reconnect the ECM connector.

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 9: Checking Harness And Connector (ECM - Body Ground)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: CHECK FOR INTERMITTENT PROBLEMS