Inspection Procedure

1. Turn the ignition switch to ON.
2. Measure the voltage between the terminals of the E3 and E6 ECM connectors.

   Standard voltage 

   VOLTAGE SPECIFIED CONDITIONS
   
   

   Tester Connections	Specified Conditions
   +B (E6-1) - E1 (E3-5)	Between 9 V and 14 V

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

Fig 1: Identifying Terminals Of E3 And E6 ECM Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: GO TO NEXT STEP 

1. Disconnect the negative battery cable.
2. Disconnect the E3 ECM connector.
3. Measure the resistance.

   Standard resistance (Check for open) 

   RESISTANCE SPECIFIED CONDITIONS (FOR OPEN) (1 OF 2)
   
   

   Tester Connections	Specified Conditions
   E1 (E3-5) - Body ground	Below 1

4. Reconnect the ECM connector.
5. Reconnect the negative battery cable.

NG REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Disconnecting E3 ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP 

1. Disconnect the I11 ignition switch connector.
2. Measure the resistance between the connector terminals shown in the table below.

   Standard resistance (Check for open) 

   RESISTANCE SPECIFIED CONDITIONS (FOR OPEN) (2 OF 2)
   
   

   Switch Positions	Tester Connections	Specified Conditions
   LOCK	START	10 k or higher
   ACC	1-3	Below 1
   ON	1-2, 1-3, 2-3, 5-6	Below 1
   START	1-2, 4-5, 4-6, 5-6	Below 1

3. Reconnect the ignition switch connector.

NG: REPLACE IGNITION SWITCH ASSEMBLY 

Fig 3: Identifying I11 Ignition Switch Connector Terminals

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 EFI fuse resistance.

   Standard resistance: Below 1  

3. Reinstall the EFI fuse.

NG: CHECK FOR SHORTS IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE 

Fig 4: Locating EFI Fuse

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP 

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

   Standard resistance 

   RESISTANCE SPECIFIED CONDITIONS
   
   

   Tester Connections	Specified Conditions
   3 - 5	10 k or higher
   3 - 5	Below 1 (When battery voltage applied to terminals 1 and 2)

3. Reinstall the EFI relay.

NG: REPLACE EFI RELAY 

Fig 5: Identifying Relay Test Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP 

1. Measure the harness and connector between the EFI relay and ECM.
   1. Remove the EFI relay from the engine room R/B.
   2. Disconnect the E6 ECM connector.
   3. Measure the resistance.

      Standard resistance (Check for open) 

      RESISTANCE SPECIFIED CONDITIONS (FOR OPEN)
      
      

      Tester Connections	Specified Conditions
      EFI relay (3) - +B (E6-1)	Below 1

      Standard resistance (Check for short) 

      RESISTANCE SPECIFIED CONDITIONS (FOR SHORT)
      
      

      Tester Connections	Specified Conditions
      EFI relay (3) or +B (E6-1) - Body ground	10 k or higher

   4. Reconnect the ECM connector.
   5. Reinstall the EFI relay.
2. Check the harness and connector between the EFI relay and body ground.
   1. Remove the EFI relay from the engine room R/B.
   2. Measure the resistance.

      Standard resistance (Check for open) 

      RESISTANCE SPECIFIED CONDITIONS (FOR OPEN)
      
      

      Tester Connections	Specified Conditions
      EFI relay (2) - Body ground	Below 1

      Fig 6: Disconnecting E6 ECM Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Reinstall the EFI relay.

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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