Mf1a Transfer / 4wd / Awd

How To Proceed With Troubleshooting

~1min read
CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure listed to troubleshoot the Active Torque Control 4WD system.
  • *: Use the Techstream.
PROCEDURE
  1. VEHICLE BROUGHT TO WORKSHOP

NEXT
  1. INSPECT BATTERY VOLTAGE

Standard Voltage:

11 to 14 V

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

NEXT
  1. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Result

Proceed to

CAN DTC is not output

A

CAN DTC is output

B


B

GO TO CAN COMMUNICATION SYSTEM

A
  1. CHECK FOR DTCs*

(a) Check for DTCs (See page ).


(b) Clear the DTCs.

(c) Recheck for DTCs.

Result

Proceed to

DTC does not reoccur

A

DTC does reoccur

B


B

GO TO STEP 7

A
  1. PROBLEM SYMPTOMS TABLE

Result

Proceed to

Fault not listed in problem symptoms table

A

Fault listed in problem symptoms table

B


B

GO TO STEP 7

A
  1. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Terminals of ECU (See page ).


(b) Data List / Active Test (See page ).


NEXT
  1. REPAIR OR REPLACE

NEXT
  1. CONFIRMATION TEST


NEXT

END

Test yourself

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