ABS/TCS Communication Line

ABS/TCS Communication Line
This circuit line is used to control the smooth engine operation of ABS/TCS during the TCS operation. Pulse signals are exchanged between ECM and ABS/TCS control unit.

Be sure to erase the malfunction information such as DTC not only in ABS/TCS control unit but also ECM after the ABS/TCS related repair. Refer to Self-diagnosis for ABS/ TCS control unit, "HOW TO ERASE SELF DIAGNOSTIC RESULTS".

Freeze frame data is not stored in the ECM for the ABS/TCS communication line. The MIL will not light up for the ABS/TCS communication line.

On Board Diagnosis Logic:

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

With Consult
1. Turn ignition switch "ON".
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine and let it idle for at least 3 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 3 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".

EC-TCS-01:

EC-TCS-01 Connector View:

WIRING DIAGRAM

Super Multiple Junction (SMJ) Terminal Arrangement (B4, B101, E70, E81, F63, M3, M49, M50):

DIAGNOSTIC PROCEDURE