Inspection Procedure

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

HINT:

In case of using the hand-held tester, start the inspection from step 1 and in case of not using the hand-held tester, start from step 2.

Check engine hood courtesy switch using hand-held tester.
PREPARATION:

Connect the hand-held tester to the DLC3.

CHECK:

Check the engine hood courtesy switch using DATA LIST.
1. OK: Proceed to next circuit inspection shown on PROBLEM SYMPTOMS TABLE .
2. NG: Go to next step

Check engine hood courtesy switch.

PREPARATION:

Remove the engine hood lock assembly.
Disconnect the engine hood courtesy switch connector.

CHECK:

Check the resistance between terminals 1 and 2 when the engine hood lock is locked and unlocked.

OK:

TESTER CONNECTION AND SPECIFIED CONDITION

Engine Hood Lock	Tester Connection	Specified Condition
LOCK	1 - 2	10 kΩ or higher
UNLOCK	1 - 2	Below 1 Ω

Fig 1: Checking Resistance Between Terminals 1 And 2 When Engine Hood Lock Is Locked And Unlocked

NG: Replace engine hood courtesy switch.
OK: Go to next step

Check wire harness and connector between body ECU and switch, and switch and body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).
1. NG: Repair or replace wire harness and connector.
2. OK: Proceed to next circuit inspection shown on problem symptoms table (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).