Inspection Procedure

1. Turn the ignition switch ON.
2. Measure the voltage of the ECM connectors.
   Fig 1: Identifying ECM Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   TERMINALS VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   +B (E8-1) - E1 (E6-1)	9 to 14V

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

NG: GO TO NEXT STEP 

1. Disconnect the E6 ECM connector.
   Fig 2: Disconnecting E6 ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TERMINALS RESISTANCE SPECIFICATION
   
   

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

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

1. Turn the ignition switch ON.
2. Measure the voltage of the ECM connectors.
   Fig 3: Identifying ECM Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   TERMINALS VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   IGSW (E8-9) - E1 (E6-1)	9 to 14 V

OK: Go to step   6

NG: GO TO NEXT STEP 

1. Remove the IGN fuse from the instrument panel junction block RH.
   Fig 4: Identifying IGN Fuse

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the IGN fuse.

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

OK: GO TO NEXT STEP 

1. Remove the lower finish panel.
2. Disconnect the I18 ignition switch connector.
   Fig 5: Identifying I18 Ignition Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Measure the resistance of the ignition switch.

   Standard resistance 

   TERMINALS RESISTANCE SPECIFICATION
   
   

   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, 6-8

4. Reconnect the ignition switch connector.

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.
   Fig 6: Identifying ECM Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard voltage 

   TERMINALS VOLTAGE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   MREL (E8-8) - E1 (E6-1)	9 to 14 V

NG: REPLACE ECM 

OK: GO TO NEXT STEP 

1. Remove the EFI fuse from the engine room junction block.
   Fig 7: Identifying EFI Fuse

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the EFI fuse.

   Standard resistance: 

   Below 1 Ω 

NG: REPLACE FUSE 

OK: GO TO NEXT STEP 

1. Remove the EFI relay from the engine room junction block.
   Fig 8: Inspecting EFI Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the EFI relay.

   Standard resistance 

   TERMINALS RESISTANCE SPECIFICATION
   
   

   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 EFI relay.

NG: REPLACE EFI RELAY 

OK: GO TO NEXT STEP 

1. Disconnect the E8 ECM connector.
   Fig 9: Disconnecting E8 ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance between the wire harness side connector and body ground.

   Standard resistance 

   TERMINALS RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   MREL (E8-8) - Body ground	Below 1 Ω

3. Reconnect the ECM connector.

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR 

NG: CHECK FOR INTERMITTENT PROBLEMS