Toyota Tacoma (2015-2018) Service Manual: ABS Warning Light does not Come ON

Toyota Tacoma (2015-2018) Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Vacuum Brake Booster) / ABS 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 ABS Warning Light Remains ON (See page CAUTION / NOTICE / HINT ).

CAUTION / NOTICE / HINT

NOTICE:

When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information (See page PROCEDURE ).

PROCEDURE

1.	CHECK CAN COMMUNICATION SYSTEM

(a) Check if CAN communication system DTCs are output (See page Result Result ).

Result

Result	Proceed to
DTC is not output	A
DTC is output	B

CHECK CAN COMMUNICATION SYSTEM

2.	PERFORM ACTIVE TEST USING TECHSTREAM (ABS WARNING LIGHT)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Active Test.

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

ABS/VSC/TRAC

Tester Display	Measurement Item	Control Range	Diagnostic Note
ABS Warning Light	ABS warning light	Warning light OFF/ON	Observe combination meter Vehicle condition: Vehicle stopped

Tester Display

Measurement Item

Control Range

Diagnostic Note

ABS Warning Light

ABS warning light

Warning light OFF/ON

Observe combination meter

Vehicle condition: Vehicle stopped

(f) When performing the ABS Warning Light Active Test, check ABS Warning Light in the Data List.

ABS/VSC/TRAC

Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
ABS Warning Light	ABS warning light	ABS warning light	OFF: Warning light off ON: Warning light on	-

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

ABS Warning Light

ABS warning light

OFF: Warning light off

ON: Warning light on

Result

Result	Proceed to
ABS warning light in the Data List does not change using the Active Test	A
ABS warning light in the Data List turns ON/OFF using the Active Test	B

REPLACE BRAKE ACTUATOR ASSEMBLY

3.	INSPECT COMBINATION METER ASSEMBLY

(a) Turn the ignition switch off.

(b) Perform Active Test of the combination meter assembly using the Techstream.

OK:

The ABS warning light turns on or off in accordance with the Techstream.

REPLACE BRAKE ACTUATOR ASSEMBLY

INSPECT METER / GAUGE SYSTEM

ECM Communication Circuit Malfunction (C1203)

DESCRIPTION The circuit is used to send TRAC and VSC control information from the skid control ECU (brake actuator assembly) to the ECM, and engine control information from the ECM to the skid co ...

ABS Warning Light Remains ON

DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication. If any of the following is detected, the ABS warning light remains ...

Other materials:

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Trouble Codes. (e) Check for DTCs, and then write them down. (f) Check the details of the DTCs (See page ...

Removal
REMOVAL PROCEDURE 1. REMOVE FRONT FENDER SEAL LH (a) Remove the 5 clips and front fender seal LH. 2. REMOVE FRONT FENDER SEAL RH HINT: Use the same procedure as for the LH side. 3. REMOVE FRONT EXHAUST PIPE ASSEMBLY (a) Disengag ...

Components
COMPONENTS ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION *A w/ Seat Heater System - - *1 FRONT SEAT CUSHION HEATER ASSEMBLY *2 FRONT SEATBACK HEATER ASSEMBLY ...