Toyota Corolla Repair Manual: Inspection procedure

1 Check courtesy lamp switch

1. Check the courtesy switch, as shown in the illustration and table.

Standard:

2 Check wire harness (integration relay  door courtesy sw)

1. Disconnect the integration relay and door courtesy connectors.
2.  check the continuity between the terminals of the integration relay and door courtesy switch connectors, as shown in the illustration and table.

Standard:

3. Disconnect the each door courtesy switch connectors.
4.  check the continuity between the terminals of the integration relay and door courtesy switch connectors, as shown in the illustration and table.

Standard:

3 Check wire harness (tvip ecu  luggage compartment light sw)

1. Disconnect the tvip ecu and luggage comportment light switch connectors.
2.  check the continuity between the terminals of the tvip ecu and luggage compartment light switch connectors, as shown in the illustration and table.

Standard:

Proceed to next circuit inspection shown on problem symptoms table