P1212

P1212 VDC/TCS/ABS COMMUNICATION LINE

Description

NOTE: If DTC P1212 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to "DTC U1000 CAN COMMUNICATION LINE".

This CAN communication line is used to control the smooth engine operation of VDC/TCS/ABS 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 VDC/TCS/ABS control unit but also ECM after the VDC/TCS/ABS related repair.

On Board Diagnosis Logic
Freeze frame data is not stored in the ECM for this self-diagnosis. The MIL will not light up for this self-diagnosis.

Malfunction is detected when ECM can not receive the information from VDC/TCS/ABS control unit continuously.

Possible Cause
- Harness or connectors
(The CAN communication line between ECM and VDC/TCS/ABS control unit is open or shorted.)
- VDC/TCS/ABS control unit
- Dead (Weak) battery

DTC Confirmation Procedure

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 10 seconds.
4. If a 1st trip DTC is detected, go to "Diagnostic Procedure".

With GST
Follow the procedure "WITH CONSULT-II" above.

Step 1:

Diagnostic Procedure