DTC C1A01: Driving Support ECU: Procedure

CHECK FOR DTC
1. Clear the DTC. Refer to DTC CHECK / CLEAR [09/2012 - ] .
2. Check for DTC. Refer to DTC CHECK / CLEAR [09/2012 - ] .
  OK
  
  DTC C1A01 is not output.
NG → See step 3

OK → See step 2
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2012 - ]
REPLACE DRIVING SUPPORT ECU. Refer to REMOVAL [09/2012 - ]