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 malfunction 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 independently). 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 | Trouble diagnosis name | DTC detection condition | Possible causes |
U0300 |
Internal Control Module Software Incompatibility | When the ignition switch is ON, the data length transmitted from each control unit is shorter than the specified length and the status continues for 2 seconds or more. | Control unit other than TCM |
DTC CONFIRMATION PROCEDURE
1.PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
>> GO TO 2.
2.CHECK DTC DETECTION
With CONSULT
Is "U0300" detected?
YES >> Go to TM "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CONTROL UNIT CHECK
Check the number of control units replaced before "U0300" is detected.
Is one control unit replaced?
YES >> The specification of the control unit replaced may be incorrect. Check the part number and the specification.
NO >> GO TO 2.
2.CONTROL UNIT CHECK
With CONSULT
Is "U0300"detected?
YES >> Turn OFF the ignition switch and check other control units in the same manner.
NO >> The specification of the control unit removed may be incorrect. Check the part number and the specification.
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 excellen ...
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 excelle ...
Event Data Recorders (EDR)
This vehicle is equipped with an Event Data Recorder
(EDR). The main purpose of an EDR is to
record, in certain crash or near crash-like situations,
such as an air bag deployment or hitting a
road obstacle, data that will assist in understanding
how a vehicle's systems performed. The EDR
is de ...
Panic alarm function does not operate
Diagnosis Procedure
1.CHECK REMOTE KEYLESS ENTRY FUNCTION
Check remote keyless entry function.
Does door lock/unlock with Intelligent Key button?
YES >> GO TO 2.
NO >> Refer to DLK "Diagnosis Procedure".
2.CHECK HORN OPERATION
Select IPDM E/R using CONSULT.
Select ...