DTC C1AA2: Vehicle Speed Tolerance Malfunction [11/2017 - 01/2023]: Procedure

1. Perform On-vehicle Inspection of the meter/gauge system.

   Refer to ON-VEHICLE INSPECTION [11/2017 - 03/2019] , or refer to ON-VEHICLE INSPECTION [03/2019 - 01/2023]

   HINT: 

   Check the meter function by referring to On-vehicle Inspection for the combination meter assembly.

   Result

   Result	Proceed to
   Combination meter assembly is normal	A
   Combination meter assembly is malfunctioning	B

Result: 

B 

CHECK METER / GAUGE SYSTEM (SPEEDOMETER MALFUNCTION). Refer to  Speedometer Malfunction [11/2017 - 03/2019]  , or refer to  Speedometer Malfunction [03/2019 - 01/2023] 

Result: 

A 

See step  2

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [11/2017 - 01/2023]

   Chassis > LKA/LDA > Clear DTCs 

2. Perform the following procedure.

   HINT: 

   If the following procedure is not performed, the previously output DTC cannot be detected.

   1. Turn the engine switch on (IG) and wait 1 minute or more.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [11/2017 - 01/2023]

   Chassis > LKA/LDA > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1AA2 is not output	A
   DTC C1AA2 is output	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2017 - 03/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2019 - 09/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2020 - 01/2023] 

Result: 

B 

See step  3

1. Replace the forward recognition camera.

   Refer to REMOVAL [11/2017 - 01/2023]

2. Perform forward recognition camera adjustment.

   Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [11/2017 - 01/2023]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [11/2017 - 01/2023]

   Chassis > LKA/LDA > Clear DTCs 

2. Perform the following procedure.

   HINT: 

   If the following procedure is not performed, the previously output DTC cannot be detected.

   1. Turn the engine switch on (IG) and wait 1 minute or more.
3. Check for DTCs.

   Refer to DTC CHECK / CLEAR [11/2017 - 01/2023]

   Chassis > LKA/LDA > Trouble Codes 

   Result

   Result	Proceed to
   DTC C1AA2 is not output	A
   DTC C1AA2 is output	B

Result: 

A 

END (FORWARD RECOGNITION CAMERA WAS DEFECTIVE) 

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  COMPONENTS [09/2014 - 01/2023]