Climate Control Control Unit (CAN)

U1010 CONTROL UNIT (CAN)





Description
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (READY).
2. Check DTC.
Is DTC detected?
YES - Go to SEE Diagnosis Procedure.
NO - Inspection End.




Diagnosis Procedure
1.INSPECTION START
1. Turn ignition switch ON (READY).
2. Select "SELF-DIAG RESULTS" mode with CONSULT-III.
3. Touch "ERASE".
4. Perform DTC CONFIRMATION PROCEDURE.
See SEE DTC Logic.
5. Check DTC.
Is the DTC U1010 displayed again?
YES - Replace auto amp. Service and Repair.
NO - Inspection End.