Brake Control / Dynamic Control Systems

How To Proceed With Troubleshooting

~1min read
CAUTION / NOTICE / HINT

Techstream can be used in steps 3, 6, 9 and 12.

PROCEDURE
  1. VEHICLE BROUGHT TO WORKSHOP

NEXT
  1. CUSTOMER PROBLEM ANALYSIS

NEXT
  1. CHECK AND CLEAR DTCS AND FREEZE FRAME DATA

NEXT
  1. PROBLEM SYMPTOM CONFIRMATION

NEXT
  1. CHECK CAN COMMUNICATION SYSTEM

(a) Check for output DTCs.

HINT:

The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, be sure to check that there is no trouble in the CAN communication system.

Result

Proceed to

CAN communication system DTC not output

A

CAN communication system DTC output

B

B

CAN COMMUNICATION SYSTEM

A
  1. CHECK CLEAR DTCS

NEXT
  1. PROBLEM SYMPTOM SIMULATION

Result

Proceed to

Symptom does not occur

A

Symptom occurs

B

B

GO TO STEP 9

A
  1. SYMPTOM SIMULATION

NEXT
  1. CHECK DTCS (OTHER THAN CAN SYSTEM DTCS)

Result

Proceed to

DTC not output

A

DTC output

B

B

GO TO STEP 11

A
  1. PROBLEM SYMPTOMS TABLE

NEXT

GO TO STEP 12

  1. DTC CHART

NEXT
  1. CIRCUIT INSPECTION

NEXT
  1. PROBLEM IDENTIFICATION

NEXT
  1. REPAIR OR REPLACE

NEXT
  1. CONFIRMATION TEST

NEXT

END

Test yourself

A quick Toyota Tacoma quiz: every answer comes with an explanation and a link to the manual page.