Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Corolla and 2005 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IGNITION OR STARTER SWITCH ASSY

Check the ignition switch, as shown in the illustration and table.

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Tester Condition	Switch Position	Specified Condition
-	LOCK	-
1 - 3	ACC	Below 1 Ω
1 - 2 - 3	ON	Below 1 Ω
5 - 6	ON	Below 1 Ω
1 - 2	START	Below 1 Ω
4 - 5 - 6	START	Below 1 Ω

Fig 1: Checking Ignition Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE IGNITION OR STARTER SWITCH ASSY
OK: GO TO NEXT STEP

CHECK FUSE (ECU-B)
1. Remove the fuse from the instrument panel J/B.
2. Check the resistance of the fuse.
  Standard: Below 1 Ω
  
  Fig 2: Locating ECU - B Fuse
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE FUSE
2. OK: GO TO NEXT STEP

CHECK RELAY (Marking: IG1)

Remove the relay from the instrument panel J/B.
Inspect the relay resistance, as shown in the illustration and table.

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Tester Condition	Condition	Specified Condition
1 - 2	Always	Below 1 Ω
3 - 5	Apply B+ between terminals 1 and 2	Below 1 Ω

Fig 3: Checking Relay

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE RELAY
OK: GO TO NEXT STEP

CHECK TVIP ECU

Disconnect the TVIP ECU connector.
Turn the ignition switch ON.
Measure the voltage between the terminal of the ECU connector and the body ground, as shown in the illustration and table.

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Tester Condition	Specified Condition
IG (T3-10) - Body ground	10 to 14 V

Fig 4: Disconnecting TVIP ECU Connector

NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR
OK: GO TO NEXT STEP

CHECK AND REPLACE TVIP ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )