Inspection Procedure

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

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   E10-1 (+B) - E6-1 (E1)	9 to 14 V

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

Fig 1: Identifying ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to next step 

1. Disconnect the E6 ECM connector.
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   E6-1 (E1) - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Disconnecting E6 ECM Connector

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 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   E10-9 (IGSW) - E6-1 (E1)	9 to 14 V

OK: Go to step  6

Fig 3: Identifying ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to next step 

1. Remove the IGN fuse from the cowl side junction block RH.
2. Measure the resistance of the IGN fuse.

   Standard resistance: 

   Below 1 Ω 

NG: CHECK FOR SHORT IN ALL HARNESSES AND COMPONENTS CONNECTED TO IGN FUSE, AND REPLACE IGN FUSE 

Fig 4: Identifying IGN Fuse

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Remove the I18 ignition switch connector.
2. Measure the resistance of the ignition switch.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Switch position	Tester Connection	Specified Condition
   ON	6-7	Below 1 Ω
   START	6-7	Below 1 Ω

NG: REPLACE IGNITION SWITCH ASSEMBLY 

Fig 5: Identifying Ignition Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   E10-8 (MREL) - E6-1 (E1)	9 to 14 V

NG: REPLACE ECM 

Fig 6: Identifying ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Remove the EFI OR ECD NO. 1 fuse from the engine room junction block.
2. Measure the resistance of the EFI OR ECD NO. 1 fuse.

   Standard resistance: 

   Below 1 Ω 

NG: CHECK FOR SHORT IN ALL HARNESSES AND COMPONENTS CONNECTED TO EFI OR ECD NO. 1 FUSE, AND REPLACE EFI OR ECD FUSE 

Fig 7: Identifying EFI Or ECD NO 1 Fuse

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

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Terminal Connection	Specified Condition
   1 - 3	10 kΩ or higher
   1 - 3	Below 1 Ω (when battery voltage is applied to terminals 2 and 4)

NG: REPLACE EFI RELAY 

Fig 8: Inspecting EFI Relay

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Check harness and connector (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR 

NG: CHECK AND REPLACE HARNESS OR CONNECTOR (TERMINAL +B OF ECM - POSITIVE BATTERY TERMINAL)