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:

Installation
INSTALLATION PROCEDURE 1. INSTALL REAR SEATBACK HINGE SUB-ASSEMBLY (a) Install the rear seatback hinge sub-assembly with the 2 bolts. Torque: 30 N·m {306 kgf·cm, 22 ft·lbf} 2. INSTALL REAR SEATBACK ASSEMBLY (a) Install the rear seatback assembly with the 2 bolts. Torque: 37 N·m {377 k ...

Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) (C1277,...,C1416)
DESCRIPTION Refer to DTCs C1401 and C1402 (See page ). DTC Code DTC Detection Condition Trouble Area C1277 C1278 Stored only during test mode. Rear speed sensor RH/LH Rear speed sensor rotor RH/LH (Rear ax ...

Brake Warning Light does not Come ON
DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication. WIRING DIAGRAM Refer to Brake Warning Light Remains ON (See page ). CAUTION / NOTICE / HINT NOTICE: When replacing the skid control ECU (brake actuator assembly) ...

© 2011-2021 Copyright www.ttguide.net