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

Toyota Venza Service Manual / Mf1a Transfer / 4wd / Awd / Active Torque Control 4wd System / 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.

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

2.	RECONFIRM DTC

(a) Clear the DTC (See page ).

(b) Start the engine.

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

REPLACE AWD CONTROL ECU

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 ...

Other materials about Toyota Venza:

Sending Malfunction (Navigation to APGS) (U0073,U0100,U0140,U0155)
DESCRIPTION These DTCs are stored when a malfunction occurs in the CAN communication circuit. DTC No. DTC Detection Condition Trouble Area U0073 CAN bus connection error CAN communicatio ...

Removal
REMOVAL PROCEDURE 1. REMOVE REAR WHEELS 2. REMOVE CENTER EXHAUST PIPE ASSEMBLY (a) Remove the center exhaust pipe assembly. HINT: Refer to the instructions for Removal of the exhaust pipe (See page for 2GR-FE, for 1AR-FE). 3. REMOVE LOWER NO. 1 EXH ...

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE NO. 1 ULTRASONIC SENSOR (w/ Intuitive Parking Assist System) 2. REMOVE NO. 2 ULTRASONIC SENSOR RETAINER (w/ Intuitive Parking Assist System) 3. REMOVE FRONT LICENSE PLATE BRACKET (a) Remove the 2 screws and ...