ABS/TCS Control Unit Signal

ABS/TCS Control Unit
The malfunction information related to ABS/TCS control unit is transferred through the line (LAN) from ABS/TCS control unit to ECM.
Be sure to erase the malfunction information such as DTC not only for ABS/TCS control unit but also for ECM after the ABS/TCS related repair.
Freeze frame data is not stored in the ECM for the ABS/TCS control unit. The MIL will not light up for ABS/TCS control unit.




ON BOARD DIAGNOSIS LOGIC

DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE
Before performing the following procedure, confirm that battery voltage is more than 10.5V.

With Consult
1. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode with CONSULT
3. Start engine and let it idle for at least 40 seconds.
4. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".

OR

Without Consult
1. Start engine and let it idle for at least 40 seconds.
2. Turn ignition switch "OFF", wait at least 5 seconds and then turn "ON".
3. Perform "Diagnostic Test Mode II (Self-diagnostic results)" with ECM.
4. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE".

DTC erasing procedure for ABS/TCSS related repair
Erase DTC code by following procedure:

With Consult
1. Turn ignition switch "OFF" and then turn it "ON".
2. Connect CONSULT and select "ABS".
3. Insert UE990 card and install it.
4. Select "ABS" and touch "SELF-DIAG RESULTS".
5. Touch "ERASE".
6. Touch "BACK" then erase malfunction code which has been stored in the TCM or ECM.

DIAGNOSTIC PROCEDURE
Refer to TROUBLE DIAGNOSIS FOR 0404.