Nissan Sentra Service Manual: P1212 TCS Communication line

Nissan Sentra Service Manual / Engine / Engine control system / Dtc/circuit diagnosis / P1212 TCS Communication line

Description

This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse signals are exchanged between ECM and вЂњABS actuator and electric unit (control unit)вЂќ.

Be sure to erase the malfunction information such as DTC not only for вЂњABS actuator and electric unit (control unit)вЂќ but also for ECM after TCS related repair.

DTC Logic

DTC DETECTION LOGIC

NOTE:

If DTC P1212 is displayed with DTC U1001, first perform the trouble diagnosis for DTC U1001. Refer to EC-169, "DTC Logic".
If DTC P1212 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to EC-350, "DTC Logic".

Freeze frame data is not stored in the ECM for this self-diagnosis.

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detecting condition	Possible cause
P1212	TCS/CIRC (TCS/CIRC)	ECM can not receive the information from вЂњABS actuator and electric unit (control unit)вЂќ continuously.	Harness or connectors (CAN communication line is open or shorted.) ABS actuator and electric unit (control unit) Dead (Weak) battery

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

Turn ignition switch OFF and wait at least 10 seconds.
Turn ignition switch ON.
Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

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

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

Start engine and let it idle for at least 10 seconds.
Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-368, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

Perform the trouble diagnosis for TCS. Refer to BRC-51, "Work Flow".

NOTE:

If DTC P1212 is displayed with DTC UXXXX and/or P0607, perform the following trouble diagnosis

Trouble diagnosis for DTC UXXXX Refer to EC-94, "DTC Index".
Trouble diagnosis for DTC P0607 Refer to EC-350, "DTC Logic".

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