ECM

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. PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT
1.Perform "INSPECTION MODE 5". Description.
2.Start engine and wait at least 5 seconds.
3.Perform "All DTC Reading".
4.Check DTC of "MOTOR CONTROL".
Is the DTC U0100, U0101, U0111 or U0293 detected?
YES- GO TO 3.
NO-1 (DTC U0100, U0101, U0111 or U0293 is stored in "Motor Control" at the time of receiving.)--GO
TO 3.
NO-2 (Repaired after performing .)-INSPECTION END

3. PERFORM CAN DIAGNOSIS

With CONSULT
1.Perform "CAN Diagnosis".
2.Check diagnosis results.
- Proceed to .

Diagnosis Procedure

CAUTION:
- To perform diagnosis, observe CAN Fundamental.
- To repair harness, observe CAN Fundamental.

1. INSPECTION START

Confirm the detected malfunction (result of "CAN Diagnosis").
Is there any malfunction at present or a malfunction history?
YES- Proceed to Trouble Diagnosis Flow Chart.
NO- GO TO 2.

2. DETECT THE ROOT CAUSE

With CONSULT
Check DTC of "MOTOR CONTROL".

NOTE:
*: If "EV/HEV" detects DTC U0110, check the traction motor inverter branch line first.
- Intermittent malfunction. Check malfunctioning parts, according to the intermittent Incident. Intermittent Incident.