Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: TRAC OFF Indicator Light does not Come ON

DESCRIPTION

Refer to TRAC OFF Indicator Light Remains ON (See page WIRING DIAGRAM ).

WIRING DIAGRAM

Refer to TRAC OFF Indicator Light Remains ON (See page CAUTION / NOTICE / HINT ).

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the skid control ECU (master cylinder solenoid), perform calibration (See page ). Inspect the fuses for circuits related to this system before performing ).
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

NG

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

OK

2.

INSPECT SKID CONTROL ECU (CSW TERMINAL)

(a) Disconnect the S1 skid control ECU (master cylinder solenoid) connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

S1-9 (CSW) - Body ground

VSC OFF switch not pushed in

10 kΩ or higher

VSC OFF switch pushed in

Below 1 Ω

Text in Illustration

*a

Front view of wire harness connector

(to Skid Control ECU)

(c) Reconnect the S1 skid control ECU (master cylinder solenoid) connector.

NG

GO TO STEP 4

OK

3.

READ VALUE USING TECHSTREAM (TRAC/VSC OFF MODE)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.

ABS/VSC/TRAC

Tester Display

Measurement Item

Control Range

Diagnostic Note

TRAC/VSC Off Mode

TRAC/VSC off mode/ Normal, TRC OFF, Unknown or VSC OFF

Normal: Normal mode

TRC OFF: TRAC OFF mode

VSC OFF: VSC OFF mode

-

(f) Check that the mode display changes according to VSC OFF switch operation.

OK:

Display changes according to switch operation.

OK

GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING)

NG

REPLACE MASTER CYLINDER SOLENOID

4.

INSPECT VSC OFF SWITCH

NG

REPLACE VSC OFF SWITCH

OK

5.

INSPECT ROOF CONSOLE BOX ASSEMBLY (MASTER CYLINDER SOLENOID - VSC OFF SWITCH)

A

REPAIR OR REPLACE HARNESS OR CONNECTOR (MASTER CYLINDER SOLENOID - ROOF CONSOLE BOX ASSEMBLY)

B

REPLACE ROOF CONSOLE BOX ASSEMBLY

C

REPLACE ROOF CONSOLE BOX ASSEMBLY

Brake Warning Light Remains ON
DESCRIPTION The BRAKE warning light comes on when brake fluid is insufficient, the parking brake is applied or the EBD is defective. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Whe ...

TRAC OFF Indicator Light Remains ON
DESCRIPTION In 2WD mode: Operation of the VSC OFF switch changes the vehicle between normal mode, TRAC OFF mode (AUTO LSD mode) and VSC OFF mode. During normal mode, pressing the VS ...

Other materials:

Customize Parameters
CUSTOMIZE PARAMETERS PROCEDURE 1. CUSTOMIZE AIR CONDITIONING SYSTEM (a) Customizing with the Techstream NOTICE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current settings before customizi ...

IG Signal Circuit
DESCRIPTION This circuit detects whether the ignition switch is ON or off, and sends this information to the main body ECU (multiplex network body ECU). WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the fol ...

Reassembly
REASSEMBLY CAUTION / NOTICE / HINT HINT: Use the same procedures for both the LH and RH sides. The procedure described below is for the LH side. PROCEDURE 1. INSTALL SIDE TURN SIGNAL LIGHT ASSEMBLY (w/ Side Turn Signal Light) 2. INSTALL OUTER MIRROR COVER (w/o Side Turn Si ...

© 2011-2024 Copyright www.ttguide.net