DTC U0235: Lost Communication with Cruise Control Front Distance Range Sensor [08/2014 - ]: Procedure

1. Using the Techstream to check if the CAN communication system is functioning normally (Refer to Diagnosis System [08/2014 - 08/2015] Refer to Diagnosis System [08/2015 - ] ).

   OK

   CAN communication system DTC is not output.

Result:  NG

NG 

GO TO CAN COMMUNICATION SYSTEM 

(Refer to How To Proceed With Troubleshooting [08/2014 - ] )

Result:  OK

OK 

Refer to  2

1. Disconnect the driving support ECU assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Turn the power switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   H5-30 (B) - Body ground	Power switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Driving Support ECU Assembly)

4. Reconnect the driving support ECU assembly connector.

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

Refer to  3

1. Disconnect the driving support ECU assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   H5-25 (GND) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Driving Support ECU Assembly)

3. Reconnect the driving support ECU assembly connector.

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result:  OK

OK 

Refer to  4

1. Replace the driving support ECU (Refer to Removal [08/2014 - ] ).

Result:  NEXT

NEXT 

Refer to  5

1. Clear the DTCs (Refer to DTC Check / Clear [08/2014 - ] ).
2. Turn the power switch on (IG).
3. Check if the same DTC is output (Refer to DTC Check / Clear [08/2014 - ] ).

   Result

   Result	Proceed to
   DTC U0235 is not output	A
   DTC U0235 is output	B

Result:  A

A 

END 

Result:  B

B 

REPLACE MILLIMETER WAVE RADAR SENSOR 

(Refer to Removal [08/2014 - ] )