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 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 1: Identifying Instrument Panel
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE FUSE

CHECK TVIP ECU

Disconnect the TVIP ECU connector.
Measure the voltage between the terminals of the ECU connector, as shown in the illustration and table.

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
+B1 (T3-2) - E (T3-29)	10 to 14 V
E (T3-29) - Body ground	0 V

Fig 2: Disconnecting TVIP ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
OK: GO TO NEXT STEP

CHECK WIRE HARNESS (TVIP ECU - BODY GROUND)

Disconnect the TVIP ECU connector.
Check the connector on the harness side, as shown in the illustration and table.

Standard:

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
E (T3-29) - Body ground	Below 1Ω

Fig 3: 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 )