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:

Parking Brake Cable
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. DISCONNECT NO. 2 PARKING BRAKE SHOE ASSEMBLY WITH PARKING BRAKE SHOE LEVER (See page ) 2. REMOVE VOLTAGE INVERTER ASSEMBLY (See page ) 3. REMOVE NO. 2 PARKING BRAKE CABLE ASSEMBLY (a) Loosen the adjusting n ...

Installation
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Black Screen
PROCEDURE 1. CHECK DISPLAY SETTING (a) Check that the display is not in "Screen Off" mode. OK: The display setting is not in "Screen Off" mode. NG CHANGE SCREEN TO SCREEN ON MODE OK ...

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