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

Toyota Tacoma (2015-2018) Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / VSC OFF Indicator Light does not Come ON

DESCRIPTION

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

WIRING DIAGRAM

Refer to VSC 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 the following inspection procedure.

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

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

2.	INSPECT SKID CONTROL ECU (CSW TERMINAL)

GO TO STEP 4

3.	READ VALUE USING TECHSTREAM (TRAC/VSC OFF MODE)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(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	-

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.

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

REPLACE MASTER CYLINDER SOLENOID

4.	INSPECT VSC OFF SWITCH

REPLACE VSC OFF SWITCH

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

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

REPLACE ROOF CONSOLE BOX ASSEMBLY

Slip Indicator Light Remains ON

DESCRIPTION The slip indicator light blinks during VSC or TRAC and AUTO LSD operation. When the system fails, the slip indicator light comes on to warn the driver. WIRING DIAGRAM CAUTION / NOTI ...

AUTO LSD Indicator Light does not Come ON

DESCRIPTION The AUTO LSD does not operate even if the VSC OFF switch is pressed under the following conditions: The brake system is faulty. The temperature inside the hydraulic brake bo ...

Other materials:

Check Bus 2 Line for Short to +B
DESCRIPTION There may be a short circuit between one of the CAN bus lines and +B when no resistance exists between terminal 18 (CA4H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 17 (CA4L) of the central gateway ECU (network gateway ECU) and ...

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Road Test
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