Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: AUTO LSD Indicator Light Remains ON

DESCRIPTION

During normal mode, pressing the VSC OFF switch for a short amount of time changes vehicle to AUTO LSD mode.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

When replacing the brake actuator assembly, perform calibration (See page PROCEDURE PROCEDURE ).

PROCEDURE

1.

CHECK CAN COMMUNICATION LINE

(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) Select CAN Bus Check from the System Selection Menu screen and follow the prompts on the screen to inspect the CAN bus (See page OK: OK: ).

OK:

CAN Bus Check indicates no malfunctions in CAN communication.

NG

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

OK

2.

PERFORM ACTIVE TEST USING TECHSTREAM (Indicat. Auto LSD)

(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: Body Electrical / Combination Meter / Active Test.

(f) According to the display on the Techstream, perform the Active Test.

Combination Meter

Tester Display

Test Part

Control Range

Diagnostic Note

Indicat. Auto LSD

AUTO LSD indicator light

OFF/ON

Perform the test with the vehicle stopped and the engine idling

(g) Check that the AUTO LSD indicator light on the combination meter assembly turns on or off in accordance with the Techstream operation.

OK:

The AUTO LSD indicator light turns on or off in accordance with the Techstream operation.

NG

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

OK

3.

CHECK HARNESS AND CONNECTOR (CSW TERMINAL)

(a) Disconnect the S1 skid control ECU connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

S1-33 (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 connector.

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

4.

INSPECT VSC OFF SWITCH

(a) Turn the ignition switch off.

(b) Remove the VSC OFF switch (See page (c) Inspect the VSC OFF switch (See page  ). ).

(c) Inspect the VSC OFF switch (See page OK: ).

OK:

The VSC OFF switch operates normally.

OK

REPAIR OR REPLACE HARNESS OR CONNECTOR

NG

REPLACE VSC OFF SWITCH

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Other materials:

Short in Side Squib LH Circuit (B1825/56-B1828/56)
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Ambient Temperature Sensor Circuit (B1412/12)
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Removal
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