DTC C1299/99: Cancellation of 4WD Control: Procedure

1. Check the size and condition of all 4 tires. Refer to INSPECTION [08/2012 - ] .

   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 TIRES SO THAT ALL 4 TIRES ARE THE SAME SIZE 

OK: Go to next step 

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Select the "Data List" on the Techstream. Refer to DATA LIST/ACTIVE TEST [08/2012 - ] .
4. Check that the speed values detected at all four wheels displayed on the Techstream are the same when driving the vehicle.
   DATA LIST: 4WD
   
   

   Item	Measurement Item/ Range (Display)	Normal Condition
   FR Wheel Speed	Wheel speed sensor (FR) reading / min.: 0 mph (0 km/h), max.: 202 mph (326.4 km/h)	Actual wheel speed
   FL Wheel Speed	Wheel speed sensor (FL) reading / min.: 0 mph (0 km/h), max.: 202 mph (326.4 km/h)	Actual wheel speed
   RR Wheel Speed	Wheel speed sensor (RR) reading / min.: 0 mph (0 km/h), max.: 202 mph (326.4 km/h)	Actual wheel speed
   RL Wheel Speed	Wheel speed sensor (RL) reading / min.: 0 mph (0 km/h), max.: 202 mph (326.4 km/h)	Actual wheel speed

   OK

   The speed of all four wheels displayed on the Techstream should match.

NG → CHECK SPEED SIGNAL CIRCUIT 

OK: Go to next step 

1. Clear the DTC. Refer to DTC CHECK/CLEAR [08/2012 - ] .
2. Turn the engine switch off.
3. Start the engine.
4. Drive the vehicle at the speed of 12 mph (20 km/h) or more and check if the same DTC is output.

   Result

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

B → CHECK INTERMITTENT PROBLEMS 

A → REPLACE 4WD CONTROL ECU