Toyota 4Runner: How To Proceed With Troubleshooting

Toyota 4Runner Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System(for Hydraulic Brake Booster) / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

*: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

3.	INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, inspect the CAN communication function to make sure there are no malfunctions in the communication system.

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

HINT:

The skid control ECU sends the signals of each warning light via CAN communication.

GO TO CAN COMMUNICATION SYSTEM

4.	CHECK DTC AND FREEZE FRAME DATA*

5.	CLEAR DTC AND FREEZE FRAME DATA*

6.	PROBLEM SYMPTOM CONFIRMATION

7.	DTC CHECK AND CLEAR*

8.	PROBLEM SYMPTOM CONFIRMATION

Result	Proceed to
Symptom does not occur	A
Symptom occurs	B

GO TO STEP 11

9.	SYMPTOM SIMULATION

10.	CHECK FOR DTC (OTHER THAN CAN COMMUNICATION SYSTEM DTC)*

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

GO TO STEP 12

11.	PROBLEM SYMPTOMS TABLE

GO TO STEP 14

12.

DTC CHART

13.	CIRCUIT INSPECTION*

14.	IDENTIFICATION OF PROBLEM

15.	REPAIR OR REPLACE

16.	CONFIRMATION TEST*

END

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