P1211

Description
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.

DTC ERASING PROCEDURE FOR ABS/TCS RELATED REPAIR
1. Turn ignition switch "OFF" and then turn it "ON".
2. Connect CONSULT-II and select "ABS".
3. Select "ABS" and touch "SELF-DIAG RESULTS".
4. Touch "ERASE".
5. Touch "BACK" then erase malfunction code which has been stored in the TCM or ECM.

On Board Diagnosis Logic
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.

Malfunction is detected when (Malfunction A) ECM receives incorrect voltage from ABS/TCS control unit continuously, (Malfunction B) TCS operation (Fuel cut) continues for an abnormally long time.

Possible Cause
- ABS/TCS control unit
- TCS related parts

DTC Confirmation Procedure
Perform "Procedure for malfunction A" first. If the 1st trip DTC cannot be confirmed, perform "Overall Function Check", "Procedure for malfunction B".

PROCEDURE FOR MALFUNCTION A

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5 V at idle.




With CONSULT-II
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" below.

Overall Function Check
Use this procedure to check the overall function of ABS/TCS control unit. During this check, a DTC might not be confirmed.

PROCEDURE FOR MALFUNCTION B
1. Lift up driving wheels.
2. Start engine and warm it up to normal operating temperature.
3. Place TCS OFF switch in "ON" position.
4. Drive vehicle with "D" position (OD "ON" or "OFF") and check engine running conditions as follows.

Engine speed ("D" position) Engine running condition
Idle Normal
More than 1,600 rpm Rough

5. If NG, go to "Diagnostic Procedure" below.

Diagnostic Procedure
If the trouble is duplicated after "Procedure for malfunction A", perform "Procedure A". If the trouble is duplicated after "Procedure for malfunction B", perform "Procedure B".

PROCEDURE A
Go to "SELF-DIAGNOSIS PROCEDURE" of "TROUBLE DIAGNOSES" under Brakes/Testing and Inspection.

Diagnostic Procedure Step 1:

PROCEDURE B