Toyota Tacoma 2015-2018 Service Manual: Brake System (P157800)

DESCRIPTION

This DTC is output when the VSC system has a problem. Check the VSC system when this DTC is output.

CAUTION / NOTICE / HINT

HINT:

When this DTC is output, confirm that the vehicle stability control system is normal since it may be malfunctioning.

for Hydraulic Brake Booster: See page

for Vacuum Brake Booster: See page

PROCEDURE

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch on.

(c) Turn the Techstream on.

(d) Enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Codes.

(e) Check for DTCs (See page ).

OK:

Vehicle stability control system DTCs are not output

B

GO TO VEHICLE STABILITY CONTROL SYSTEM

C

GO TO VEHICLE STABILITY CONTROL SYSTEM

A

(a) Clear the DTCs (See page ).

(b) Perform the following to make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the malfunction cannot be detected.

(1) Drive the vehicle at a speed for which cruise control operation is possible.

(2) Turn the cruise control system on using the cruise control main switch (ON/OFF).

(3) Push the cruise control main switch to -SET to begin control of vehicle speed using the cruise control system.

(c) Turn the Techstream on.

(d) Perform the following to make sure that the DTC detection conditions are met.

HINT:

If the detection conditions are not met, the malfunction cannot be detected.

(1) Drive the vehicle at a speed for which cruise control operation is possible.

(2) Turn the cruise control system on using the cruise control main switch (ON/OFF).

(3) Push the cruise control main switch to -/SET to begin control of vehicle speed by the cruise control system.

(e) Check the DTCs (See page ).

OK:

DTC P157800 is not output

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE ECM