Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Parking Brake Switch Circuit

DESCRIPTION

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

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

CHECK VEHICLE SIGNAL

(a) Display the "Vehicle Signal Check Mode" screen (See page ).

(b) Check that the display changes between ON and OFF according to the parking brake operation.

OK:

Parking Brake Condition

Display

Applied

ON

Released

OFF

HINT:

This display is updated once per second. As a result, it is normal for the display to lag behind the actual parking brake operation.

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

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

(a) Disconnect the R31 radio and display receiver assembly connector.

(b) Disconnect the P6 parking brake switch assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R31-15 (PKB) - P6-1

Always

Below 1 Ω

R31-15 (PKB) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT PARKING BRAKE SWITCH ASSEMBLY

(a) Remove the parking brake switch assembly.

(b) Inspect the parking brake switch assembly (See page ).

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPLACE PARKING BRAKE SWITCH ASSEMBLY

Illumination Circuit
DESCRIPTION Power is supplied to the radio and display receiver assembly and steering pad switch assembly illumination when the light control switch is in the TAIL or HEAD position. WIRING DIAGR ...

Speaker Circuit
DESCRIPTION If there is a short in a speaker circuit, the radio and display receiver assembly detects it and stops output to the speakers. Thus sound cannot be heard from the speakers ...

Other materials:

Acceleration Sensor Internal Circuit (C1419,C1435)
DESCRIPTION The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor (airbag sensor assembly) via the CAN communication system. The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition. If t ...

Removal
REMOVAL CAUTION / NOTICE / HINT CAUTION: Some of these service operations affect the SRS. Read the precautionary notices concerning the SRS before servicing. Click here PROCEDURE 1. PRECAUTION NOTICE: After turning the ignition switch off, waiting time may be required before disconnectin ...

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT: Use this procedure to troubleshoot the engine immobiliser system. *: Use the Techstream. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2 ...

© 2011-2019 Copyright www.ttguide.net