Toyota 4Runner: Clearance Sonar Main Switch

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Park Assist / Monitoring / Clearance Sonar Main Switch

Components

COMPONENTS

ILLUSTRATION

Removal

REMOVAL

PROCEDURE

1. REMOVE NO. 2 SWITCH HOLE BASE

2. REMOVE BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

(a) Detach the 2 claws and remove the back sonar or clearance sonar switch.

Inspection

INSPECTION

PROCEDURE

1. INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

(a) Check the resistance.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
3 (ECU) - 6 (IG)	Sonar switch off	10 kΩ or higher
3 (ECU) - 6 (IG)	Sonar switch on	Below 1 Ω

If the result is not as specified, replace the back sonar or clearance sonar switch assembly.

(b) Apply battery voltage to the connector and check the LED illumination condition.

OK:

Measurement Condition	Specified Condition
Battery positive (+) → Terminal 3 (ECU) Battery negative (-) → Terminal 7 (E)	LED illuminates
Battery positive (+) → Terminal 5 (ILL+) Battery negative (-) → Terminal 4 (ILL-)	LED illuminates

Measurement Condition

Specified Condition

Battery positive (+) → Terminal 3 (ECU)

Battery negative (-) → Terminal 7 (E)

LED illuminates

Battery positive (+) → Terminal 5 (ILL+)

Battery negative (-) → Terminal 4 (ILL-)

LED illuminates

If the result is not as specified, replace the back sonar or clearance sonar switch assembly.

Text in Illustration

*a	Component without harness connected (Back Sonar or Clearance Sonar Switch Assembly)

Installation

INSTALLATION

PROCEDURE

1. INSTALL BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

(a) Attach the 2 claws to install the back sonar or clearance sonar switch.

2. INSTALL NO. 2 SWITCH HOLE BASE

Clearance Warning Buzzer

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