Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Toyota vehicle intrusion protection system / Ecu power source circuit

Toyota Corolla (E120): Ecu power source circuit

Circuit description

This circuit provides power to operate the tvip ecu.

Wiring diagram

Inspection procedure

1 Check fuse (ecu–b)

1. Remove the fuse from the instrument panel j/b.
2.  check the continuity of the fuse.

Standard: continuity

2 Check tvip ecu

1. Disconnect the tvip ecu connector.
2.  measure the voltage between the terminals of the ecu connector, as shown in the illustration and table.

Standard:

3 Check wire harness (tvip ecu  body ground)

1. Disconnect the tvip ecu connector.
2. check the connector on the harness side, as shown in the illustration and table.

Standard:

Check and replace tvip ecu