DTC C1AA1: FCM Destination Information Unmatched [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
Refer to REMOVAL [08/2013 - ]

NEXT: Go to next step
CLEAR DTCs
1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.
4. Clear DTCs.
5. Turn the power switch off.
NEXT: Go to next step
CHECK FOR DTCs (LANE DEPARTURE ALERT)
1. Perform the following to make sure the DTC detection conditions are met.
  HINT:
  
  If the detection conditions are not met, the system cannot detect the malfunction.
  1. Drive the vehicle at a speed between 50 km/h (32 mph) and 220 km/h (138 mph), and operate the lane departure alert system.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.
5. Check for DTCs.
  OK
  
  DTC C1AA1 is not output.
6. Turn the power switch off.
NG → See step 4

OK → END
REPLACE LANE DEPARTURE WARNING CAMERA. Refer to REMOVAL [08/2013 - ]