DTC C1299/99: Cancellation of 4WD Control [09/2014 - 09/2020]: Procedure

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

   Refer to INSPECTION [09/2014 - 09/2020]

   HINT: 

   DTC C1299/99 is stored when tire deformation or a difference in tire size is detected.

   OK

   The diameter and air pressure of all 4 tires are the same.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE TIRES SO THAT ALL 4 TIRES ARE SAME IN SIZE 

Result: 

OK 

See step  2

1. Connect the Techstream to the DLC3.
2. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2014 - 11/2017] , or refer to DTC CHECK / CLEAR [11/2017 - 09/2020]

   Chassis > ABS/VSC/TRAC > Clear DTCs 

3. Start the engine.
4. Drive the vehicle at a speed of 20 km/h (12 mph) or more and check that no brake control system DTCs are stored.

   Refer to DTC CHECK / CLEAR [09/2014 - 11/2017] , or refer to DTC CHECK / CLEAR [11/2017 - 09/2020]

   Chassis > ABS/VSC/TRAC > Trouble Codes 

   Result

   Result	Proceed to
   Brake control system DTCs are not stored.	A
   Brake control system DTCs are stored.	B

Result: 

B 

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS (BRAKE CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2014 - 10/2015]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2015 - 11/2017]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2017 - 10/2018]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2018 - 09/2020] 

Result: 

A 

See step  3

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Enter the following menus: Chassis / Four Wheel Drive / Data List
4. Check that the speed values detected at all four wheels displayed on the Techstream are the same when driving the vehicle.

   Chassis > Four Wheel Drive > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   FR Wheel Speed	Front wheel speed sensor RH reading	min.: 0 km/h (0 mph) max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	No large fluctuations when driving at a constant speed.
   FL Wheel Speed	Front wheel speed sensor LH reading	min.: 0 km/h (0 mph) max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	No large fluctuations when driving at a constant speed.
   RR Wheel Speed	Rear wheel speed sensor RH reading	min.: 0 km/h (0 mph) max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	No large fluctuations when driving at a constant speed.
   RL Wheel Speed	Rear wheel speed sensor LH reading	min.: 0 km/h (0 mph) max.: 326 km/h (202 mph)	Vehicle stopped: 0 km/h (0 mph)	No large fluctuations when driving at a constant speed.

   Chassis > Four Wheel Drive > Data List 

   Tester Display
   FR Wheel Speed
   FL Wheel Speed
   RR Wheel Speed
   RL Wheel Speed

   OK

   The same vehicle speed is detected at all four wheels.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO BRAKE CONTROL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 11/2017]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 09/2020] 

Result: 

OK 

See step  4

1. Inspect the suspension and ball joints for looseness.

   OK

   There is no looseness in the suspension and ball joints.

2. Inspect the driveshaft and propeller shaft rotation condition.

   OK

   The drive shaft and propeller shaft rotate smoothly.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE MALFUNCTIONING PARTS 

Result: 

OK 

See step  5

1. Connect the Techstream to the DLC3.
2. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2014 - 10/2018] , or refer to DTC CHECK / CLEAR [10/2018 - 09/2020]

   Chassis > Four Wheel Drive > Clear DTCs 

3. Start the engine.
4. Drive the vehicle, accelerating to a speed of 20 km/h (12 mph) or more and check if the same DTC is stored.

   Refer to DTC CHECK / CLEAR [09/2014 - 10/2018] , or refer to DTC CHECK / CLEAR [10/2018 - 09/2020]

   Chassis > Four Wheel Drive > Trouble Codes 

   Result

   Result	Proceed to
   DTC is stored.	A
   DTC is not stored.	B

Result: 

B 

CHECK INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 11/2017]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 10/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 11/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2019 - 09/2020] 

Result: 

A 

See step  6

1. Replace the 4WD ECU assembly.

   Refer to COMPONENTS [09/2014 - ]

   NOTE:

   When the 4WD ECU assembly is replaced with a new one, it is not necessary to perform initialization.

   Refer to INITIALIZATION [09/2014 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

1. Connect the Techstream to the DLC3.
2. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2014 - 10/2018] , or refer to DTC CHECK / CLEAR [10/2018 - 09/2020]

   Chassis > Four Wheel Drive > Clear DTCs 

3. Start the engine.
4. Drive the vehicle, accelerating to a speed of 20 km/h (12 mph) or more and check if the same DTC is stored.

   Refer to DTC CHECK / CLEAR [09/2014 - 10/2018] , or refer to DTC CHECK / CLEAR [10/2018 - 09/2020]

   Chassis > Four Wheel Drive > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are stored.	A
   DTCs are not stored.	B

Result: 

A 

REPLACE AUTOMATIC TRANSMISSION WITH TRANSFER ASSEMBLY. Refer to  COMPONENTS [09/2014 - 11/2017]  , or refer to  COMPONENTS [11/2017 - 11/2021] 

Result: 

B 

CHECK INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2014 - 10/2015]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 11/2017]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 10/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - 11/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2019 - 09/2020]