Inspection Procedure

CHECK ECM (+B VOLTAGE)

Turn the ignition switch ON.

Measure the voltage of the ECM connectors.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION TABLE

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

Fig 1: Identifying ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

NG: Go To Next Step

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

Disconnect the E6 ECM connector.

Measure the resistance of the wire harness side connector.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

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

Fig 2: Identifying E6 ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go To Next Step

CHECK ECM (IGSW VOLTAGE)

Turn the ignition switch ON.

Measure the voltage of the ECM connectors.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION TABLE

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

Fig 3: Identifying ECM Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to step 6

NG: Go To Next Step

INSPECT FUSE (IGN)
1. Remove the IGN fuse from the instrument panel junction block RH.
2. Measure the resistance of the IGN fuse.
  Standard resistance:
  
  Below 1 Ω
  
  Fig 4: Identifying IGN Fuse
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE FUSE

OK: Go To Next Step

INSPECT IGNITION SWITCH ASSEMBLY

Remove the lower finish panel.
Disconnect the 118 ignition switch connector.

Measure the resistance of the ignition switch.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

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

Reconnect the ignition switch connector.

Fig 5: Identifying 118 Ignition Switch Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE IGNITION SWITCH ASSEMBLY

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

CHECK ECM (MREL VOLTAGE)

Turn the ignition switch ON.

Measure the voltage of the ECM connectors.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION TABLE

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

Fig 6: Identifying E8 & E6 ECM Connectors Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE ECM

OK: Go To Next Step

INSPECT FUSE (EFI)
1. Remove the EFI fuse from the engine room junction block.
2. Measure the resistance of the EFI fuse.
  Standard resistance:
  
  Below 1 Ω
  
  Fig 7: Identifying EFI Fuse
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE FUSE

OK: Go To Next Step

INSPECT EFI RELAY (Marking: EFI)

Remove the EFI relay from the engine room junction block.

Measure the resistance of the EFI relay.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

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)

Reinstall EFI relay.

Fig 8: Inspecting EFI Relay

NG: REPLACE EFI RELAY

OK: Go To Next Step

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

Disconnect the E8 ECM connector.

Measure the resistance between the wire harness side connector and body ground.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION TABLE

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

Reconnect the ECM connector.

Fig 9: Identifying E8 ECM Connector

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR

NG: CHECK FOR INTERMITTENT PROBLEMS