Inspection Procedure

1. Delete the DTCs (See DTC CHECK / CLEAR  ).
2. Recheck for DTCs (See DTC CHECK / CLEAR  ).

   Result 

   RESULT REFERENCE CHART
   
   

   Result	Proceed to
   DTC C1AE1 is output	A
   No DTCs is output	B

B: USE SIMULATION METHOD TO CHECK 

A: Go to next step. 

1. Replace the ultrasonic sensor (See REMOVAL  ) with a normally functioning sensor.
   Fig 1: Identifying Ultrasonic Sensor (Front Left Sensor)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Delete the DTCs (See DTC CHECK / CLEAR  ).
2. Recheck for DTCs (See DTC CHECK / CLEAR  ).

   Result 

   RESULT REFERENCE CHART
   
   

   Result	Proceed to
   DTC C1AE1 is output	A
   No DTCs is output	B

B: END 

A: REPLACE CLEARANCE WARNING ECU ASSEMBLY (See  REMOVAL   )