Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Cancellation of 4WD Control (C1299)

DESCRIPTION

While driving, if the heat generated by the transmission coupling assembly exceeds a certain amount or if the estimated oil temperature of the transfer exceeds a certain amount, the 4WD ECU assembly cancels 4WD control and stores DTC C1299.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1299

Cancellation of 4WD Control

When one of the following conditions is met:

  • Heat generated by transmission coupling assembly exceeds the specified value.
  • Transfer estimated oil temperature exceeds the specified value.
  • Condition, size or tire pressure of the front or rear tires
  • Suspension and ball joint
  • Drive shaft
  • Propeller shaft
  • Transmission coupling assembly
  • 4WD ECU assembly

PROCEDURE

1.

CHECK VEHICLE USAGE

(a) Check that there has been no unintended vehicle usage.

OK:

There is no evidence of rough use (the vehicle has not been driven on damaged or snowy roads, etc. for a long time).

NG

CHECK FOR INTERMITTENT PROBLEMS

OK

2.

CHECK FOR DTC (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

(a) Check if the electronically controlled brake system DTC is output.

Chassis > Brake/EPB > Trouble Codes

(b) Read the DTCs using the GTS.

Result

Proceed to

Electronically controlled brake system DTCs are not output

A

Electronically controlled brake system DTCs are output

B

B

GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM

A

3.

CHECK RELATED PART

(a) Check the condition, size and tire pressure of the front and rear tires.

Click here

(b) Inspect the suspension and ball joint, etc. for rattle.

(c) Inspect the drive shaft and propeller shaft rotation condition.

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS

OK

4.

RECONFIRM DTC

(a) Clear the DTC.

Chassis > Four Wheel Drive > Clear DTCs

(b) Start the engine.

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

Chassis > Four Wheel Drive > Trouble Codes

Result

Proceed to

DTC is output

A

DTC is not output

B

B

CHECK FOR INTERMITTENT PROBLEMS

A

5.

REPLACE 4WD ECU ASSEMBLY

Click here

NEXT

6.

RECONFIRM DTC

(a) Clear the DTC.

Chassis > Four Wheel Drive > Clear DTCs

(b) Start the engine.

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

Chassis > Four Wheel Drive > Trouble Codes

Result

Proceed to

DTC is output

A

DTC is not output

B

A

REPLACE TRANSMISSION COUPLING ASSEMBLY

B

END

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