RM38N0EC _52 Drivetrain _119335 GF1A TRANSFER / 4WD / AWD _0524142 DYNAMIC TORQUE CONTROL AWD SYSTEM C

GF1A TRANSFER / 4WD / AWD  DYNAMIC TORQUE CONTROL AWD SYSTEM  C1299  Cancellation of 4WD Control  


DESCRIPTION

This DTC is output 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 while driving.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1299 Cancellation of 4WD Control When one of the following conditions is met:
·

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

·

Condition that transfer oil temperature is predefined value or more.


·

Condition, size or tire pressure of the front or rear tires

·

Electronically controlled brake system

·

Suspension and ball joint

·

Drive shaft

·

Propeller shaft

·

Transmission coupling assembly

·

4WD ECU assembly



DTC Detection Conditions: C1299
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition - - -
Malfunction Status Controls coupling calorific value is predefined value or more. ○ -
Transfer oil temperature is predefined value or more. - ○
Detection Time - -
Number of Trips 1 trip 1 trip

HINT:

DTC will be output when conditions for any of the patterns in the table above are met.


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).



Result:
Proceed to
OK
NG



OK

2.CHECK FOR DTC

NG

CHECK FOR INTERMITTENT PROBLEMS

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


2.CHECK FOR DTC
a.

Check if the electronically controlled brake system DTC is output.

Chassis > Brake/EPB > Trouble Codes
50001 435

b.

Read the DTCs using the GTS.

Result:
Result Proceed to
Only DTC C1299 is output A
DTC C1299 and other DTCs (electronically controlled brake system DTC) are output B




A

3.CHECK RELATED PART

B

REPAIR CIRCUIT INDICATED BY OUTPUT CODE (ELECTRONICALLY CONTROLLED BRAKE SYSTEM)

Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model)>DIAGNOSTIC TROUBLE CODE CHART


3.CHECK RELATED PART
a.

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

Click hereGeneral>MAINTENANCE>TIRE AND WHEEL>INSPECTION


b.

Inspect the suspension and ball joint, etc. for rattle.


c.

Inspect the drive shaft and propeller shaft rotation condition.


Result:
Proceed to
OK
NG



OK

4.RECONFIRM DTC

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS

4.RECONFIRM DTC
a.

Clear the DTC.

Chassis > Four Wheel Drive > Clear DTCs
50002 118

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
50001 118
Result:
Result Proceed to
DTC is output A
DTC is not output B




A

5.REPLACE 4WD ECU ASSEMBLY

B

CHECK FOR INTERMITTENT PROBLEMS

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


5.REPLACE 4WD ECU ASSEMBLY
a.

Replace the 4WD ECU assembly.

Click hereDrivetrain>GF1A (TRANSFER / 4WD / AWD)>4WD CONTROL ECU>REMOVAL


Result:
Proceed to
NEXT



NEXT

6.RECONFIRM DTC
6.RECONFIRM DTC
a.

Clear the DTC.

Chassis > Four Wheel Drive > Clear DTCs
50002 118

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
50001 118
Result:
Result Proceed to
DTC is output A
DTC is not output B




A

REPLACE TRANSMISSION COUPLING ASSEMBLY

Click hereDrivetrain>AXLE AND DIFFERENTIAL>REAR DIFFERENTIAL CARRIER ASSEMBLY>REMOVAL


B

END