Toyota Venza manuals

Toyota Venza: Cancellation of 4WD Control (C1299/99)

DESCRIPTION

  • If wheel slip continues, differential control will be disabled when the torque-distribution ratio of the differential clutch exceeds the set value and a malfunction in the output of the wheel speed sensors, etc. occurs.
  • If a difference in diameter between the front and rear wheels is determined, differential control will be disabled.

DTC No.

DTC Detection Condition

Trouble Area

C1299/99

  • When one of the following conditions is met:

    - Condition that controls coupling calorific value is predefined value or more.

    - Vehicle is driven and energy load tire radius difference between front tires and rear tires is more than 3%.

  • Tire size
  • AWD control ECU

CAUTION / NOTICE / HINT

HINT:

Check the condition of each related circuit connector before troubleshooting (See page ).


PROCEDURE

1.

CHECK TIRE CONDITION

(a) Check the size and condition of all 4 tires (See page ).


HINT:

This DTC is output when tire deformation or a difference in tire size is detected.

OK:

The diameter and air pressure of all 4 tires are the same.


NG

REPLACE TIRE SO THAT ALL 4 TIRES ARE THE SAME IN SIZE


OK

2.

RECONFIRM DTC

(a) Clear the DTC (See page ).


(b) Start the engine.

(c) Drive the vehicle at the speed of 20 km/h (12 mph) or more and check that the same DTC is output (See page ).


Result

Proceed to

DTC is output

A

DTC is not output

B


A

REPLACE AWD CONTROL ECU


B

CHECK INTERMITTENT PROBLEMS

Malfunction in Deceleration Sensor (C1245/93)
DESCRIPTION If a malfunction in the deceleration sensor circuit occurs, the AWD control ECU will output this DTC. DTC No. DTC Detecting Condition Trouble Area ...

ABS Malfunction (C1296/96)
DESCRIPTION If a malfunction in the speed sensor signal circuit occurs, the AWD control ECU will output this DTC. DTC No. DTC Detecting Condition Trouble Area ...

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Tires
Replace or rotate tires in accordance with maintenance schedules and treadwear.  - Checking tires 1. New tread 2. Treadwear indicator 3. Worn tread The location of treadwear indicators is shown by the “TWI” or “Δ” marks, etc., molded ...

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