Toyota 4Runner: Parking Brake Switch Circuit

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Audio / Video / Audio And Visual System / Parking Brake Switch Circuit

DESCRIPTION

This circuit is from the parking brake switch assembly to the radio and display receiver assembly.

WIRING DIAGRAM

PROCEDURE

1.	CHECK BRAKE WARNING LIGHT

(a) Check that the brake warning light comes on when the parking brake is applied and goes off when it is released.

OK:

The brake warning light operates as specified above.

GO TO BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS

2.	CHECK HARNESS AND CONNECTOR (PARKING BRAKE SWITCH ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY)

(a) Disconnect the G49 radio and display receiver assembly connector.

(b) Disconnect the A2 parking brake switch assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
G49-15 (PKB) - A2-1	Always	Below 1 Ω
G49-15 (PKB) - Body ground	Always	10 kΩ or higher

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPAIR OR REPLACE HARNESS OR CONNECTOR

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Removal
REMOVAL PROCEDURE 1. REMOVE FRONT BUMPER COVER (w/o Intuitive Parking Assist System) (See Page ) 2. REMOVE FRONT BUMPER COVER (w/ Intuitive Parking Assist System) (See Page ) 3. REMOVE HIGH PITCHED HORN ASSEMBLY 4. REMOVE RADIATOR GRILLE BRACKET ...