Toyota Tacoma (2015-2018) Service Manual: How To Proceed With Troubleshooting

Toyota Tacoma (2015-2018) Service Manual / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Vacuum Brake Booster) / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

The vehicle stability control system troubleshooting procedures are based on the premise that the CAN communication system is functioning normally. Check the CAN communication system first before troubleshooting the vehicle stability control system.
*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer and confirm the trouble.

Click here

3.	CHECK DTC AND FREEZE FRAME DATA*

(a) Check and record DTC and Freeze Frame Data.

for DTC Check/Clear: Click here for Freeze Frame Data: Click here

for Freeze Frame Data: Click here (b) Clear the DTC and Freeze Frame Data.

(b) Clear the DTC and Freeze Frame Data.

Click here

(1) Reconfirm the DTC based on the recorded DTC and Freeze Frame Data.

for DTC Check/Clear: Click here for Freeze Frame Data: Click here

for Freeze Frame Data: Click here

HINT:

If DTC U0100, U0124 or U0126 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit.
Click here
If there is no response from the skid control ECU (brake actuator assembly), inspect the +BS circuit of the skid control ECU (brake actuator assembly).
Click here

Result	Proceed to
DTC is output	A
DTC is not output (Problem symptom does not occur)	B
DTC is not output (Problem symptom occurs)	C

GO TO STEP 5

GO TO STEP 6

4.	DIAGNOSTIC TROUBLE CODE CHART

(a) Proceed to Diagnostic Trouble Code Chart.

Click here

GO TO STEP 7

5.	SYMPTOM SIMULATION

(a) Proceed to Check for Intermittent Problems.

Click here

6.	PROBLEM SYMPTOMS TABLE

(a) Proceed to Problem Symptoms Table.

Click here

7.	CIRCUIT INSPECTION*

8.	IDENTIFICATION OF PROBLEM

9.	REPAIR OR REPLACE

10.	CONFIRMATION TEST

END

Check For Intermittent Problems

CHECK FOR INTERMITTENT PROBLEMS 1. CHECK FOR INTERMITTENT PROBLEMS HINT: A momentary interruption (open circuit) in the connectors and/or wire harnesses between the sensors and ECUs can be detect ...

Calibration

CALIBRATION 1. DESCRIPTION (a) After replacing any VSC related components or performing wheel alignment adjustment, clear and read the sensor calibration data. Refer to the table below and then p ...

Other materials:

Check Mode Procedure
CHECK MODE PROCEDURE 1. DESCRIPTION (a) Check mode has a higher sensitivity to malfunctions and can detect malfunctions that normal mode cannot detect. Check mode can also detect all the malfunctions that normal mode can detect. In check mode, DTCs are detected with 1 trip detection logic. ...

Freeze Frame Data
FREEZE FRAME DATA 1. FREEZE FRAME DATA (a) Using the Techstream, check the vehicle condition (ECU, sensor) when the brake system operates or a DTC is output. 2. CHECK FREEZE FRAME DATA WHEN BRAKE SYSTEM OPERATES (a) Freeze frame data is stored when the brake system operates. The freeze frame ...

Key Reminder Buzzer does not Sound
DESCRIPTION The key reminder warning buzzer sounds when the driver side door is opened while the ignition switch is in the LOCK or ACC positions. The key reminder warning buzzer is activated when the main body ECU (multiplex network body ECU) sends a key switch signal and driver side courtesy ...