Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSTOYOTA20064RUNNER SR5, 4.7 T, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSTHEFT DETERRENT SYSTEM - DIAGNOSTICSENGINE HOOD COURTESY SWITCH CIRCUITINSPECTION PROCEDURE

2006 Toyota 4Runner SR5, 4.7 T, AWD

Inspection Procedure

2006 Toyota 4Runner SR5, 4.7 T, AWDSECTION Inspection Procedure

INSPECT HOOD LOCK ASSY (ENGINE HOOD COURTESY SWITCH)

Remove the engine hood courtesy switch from the hood lock assy.

Check the continuity.

TERMINAL SPECIFIED CONDITION TABLE

Terminal No.	Condition	Specified condition
-	Pushed (OFF (Lock))	No continuity
1 <==> 4	Free (ON (Unlock))	Continuity

Fig 1: Inspecting Hood Lock Assy (Engine Hood Courtesy Switch)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE HOOD LOCK ASSY (ENGINE HOOD COURTESY SWITCH)

OK: GO TO NEXT STEP

CHECK WIRE HARNESS (THEFT WARNING ECU ASSY <==> ENGINE HOOD COURTESY SWITCH)

Disconnect the T5 ECU connector.
Disconnect the E3 switch connector.

Check the continuity between the wire harness side connectors.

Standard:

SYMBOLS SPECIFIED CONDITION TABLE

Symbols (Terminal No.)	Specified Condition
DSWH (T5-34) <==> - (E3-1)	Continuity

Fig 2: Identifying T5 ECU Connector & E3 Switch Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: GO TO NEXT STEP

CHECK WIRE HARNESS (ENGINE HOOD COURTESY SWITCH <==> BODY GROUND)

Disconnect the E3 switch connector.

Fig 3: Identifying E3 Switch Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the continuity between the wire harness side connector and body ground.

Standard:

TERMINAL SPECIFIED CONDITION TABLE

Terminal No.	Specified Condition
E3-4 <==> Body ground	Continuity

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: CHECK AND REPLACE THEFT WARNING ECU ASSY

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.