DTC    C1299/99    Cancellation of 4WD Control

for Preparation Click here


DESCRIPTION

  1. 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.
  1. 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
  1. When one of following conditions is met:
    1. Control coupling lock is detected 4 more times.
    2. Condition that controls coupling calorific value is predefined value or more.
    3. Condition that transfer oil temperature is predefined value or more.
    4. Vehicle is driven and energy load tire radius difference between front tires and rear tires more than 3%.
  1. Electromagnetic coupling
  1. Tire size
  1. 4WD control ECU

INSPECTION PROCEDURE

HINT:
Check the condition of each related circuit connector before troubleshooting (Click here).
1.CHECK TIRE CONDITION

  1. Check the size and condition of all 4 tires.

    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

  1. Clear the DTC (Click here).

  1. Start the engine.

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

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


B
REPLACE ELECTROMAGNETIC COUPLING
A

REPLACE 4WD CONTROL ECU