Toyota CH-R Service Manual: Parking Brake Switch Circuit

DESCRIPTION

This circuit is from the skid control ECU (brake actuator assembly) to the radio and display receiver assembly.

WIRING DIAGRAM

PROCEDURE

1.

CHECK ELECTRIC PARKING BRAKE SYSTEM

(a) Check the operation of the electric parking brake.

NG

GO TO ELECTRIC PARKING BRAKE SYSTEM

OK

2.

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - RADIO AND DISPLAY RECEIVER ASSEMBLY)

(a) Disconnect the F131 radio and display receiver assembly connector.

(b) Disconnect the A42 skid control ECU (brake actuator assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F131-20 (PKB) - A42-33 (PKB)

Always

Below 1 Ω

F131-20 (PKB) or A42-33 (PKB) - Body ground

Always

10 kΩ or higher

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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