Toyota Tacoma manuals

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.

DTC No.

DTC Detection Condition

Trouble Area

MIL

Note

P157800

  • Diagnosis Condition:

    Cruise control in operation

  • Malfunction Status:

    Brake System Malfunction

  • VSC system
  • ECM

Does not come on

SAE: P1578

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

for Vacuum Brake Booster: See page PROCEDURE

PROCEDURE

1.

CHECK FOR DTC (ABS/VSC/TRAC)

(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: ).

OK:

Vehicle stability control system DTCs are not output

Result

Result

Proceed to

OK

A

NG (for Hydraulic Brake Booster)

B

NG (for Vacuum Brake Booster)

C

B

GO TO VEHICLE STABILITY CONTROL SYSTEM

C

GO TO VEHICLE STABILITY CONTROL SYSTEM

A

2.

CHECK FOR DTC (DTC P157800)

(a) Clear the DTCs (See page (b) Perform the following to make sure that the DTC detection conditions are ).

(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: ).

OK:

DTC P157800 is not output

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE ECM

Brake Switch "A" Circuit Open (P057113)
DESCRIPTION DTC No. DTC Detection Condition Trouble Area MIL Note P057113 Vehicle Condition: Cruise ...

Clutch Switch Circuit
DESCRIPTION Clutch switch circuit inspection is necessary for manual transmission vehicles. When the clutch pedal is released, the ECM receives the positive (+) battery voltage through the ECU-IG ...

Other materials:

Data List / Active Test
DATA LIST / ACTIVE TEST 1. READ DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or sig ...

Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant classification system. This system detects the conditions of the right front passenger seat and activates or deactivates the devices for the front passenger. 1. SRS warning light 2. Front passenger’s seat belt reminder light 3. AIR ...

Removal
REMOVAL PROCEDURE 1. REMOVE PROPELLER SHAFT WITH CENTER BEARING ASSEMBLY (a) Place matchmarks on the propeller shaft flange and differential flange. Text in Illustration *a Matchmark ...

© 2011-2024 Copyright www.ttguide.net