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 navigation receiver assembly.

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

CHECK VEHICLE SIGNAL (OPERATION CHECK)

(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 (NAVIGATION RECEIVER ASSEMBLY - PARKING BRAKE SWITCH ASSEMBLY)

(a) Disconnect the N25 navigation 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

N25-15 (PKB) - P6-1

Always

Below 1 Ω

N25-15 (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.

  • for Hydraulic Brake Booster: See page for Vacuum Brake Booster: See page
  • for Vacuum Brake Booster: 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 navigation receiver assembly and steering pad switch assembly illumination when the light control switch is in the TAIL or HEAD position. WIRING DIAGRAM CAU ...

Speaker Circuit
DESCRIPTION If there is a short in a speaker circuit, the stereo component amplifier assembly*1 or navigation receiver assembly*2 detects it and stops output to the speakers. Thus sound cannot be ...

Other materials:

Installation
INSTALLATION CAUTION / NOTICE / HINT CAUTION: Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing (See page ). If the side airbag was deployed, replace the front seat assembly with ...

Initialization
INITIALIZATION 1. PROCEDURES NECESSARY WHEN BATTERY TEMINAL IS DISCONNECTED/RECONNECTED Necessary Procedure Effect/Inoperative Function when Necessary Procedures are not Performed Link Perform steering sensor zero point calibration Lane ...

System Diagram
SYSTEM DIAGRAM 1. OVERALL CAN BUS DIAGRAM (a) The CAN communication system is composed of 4 buses. CAN Main Bus Line Terminating Resistor CAN Branch Line * Gateway Function Equipped ECU ...

© 2011-2025 Copyright www.ttguide.net