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EC-366 < DTC/CIRCUIT DIAGNOSIS > [HR16DE] P1212 TCS COMMUNICATION LINE P1212 TCS COMMUNICATION LINE Description INFOID:0000000009020863 This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse signals are exchanged between ECM and “ABS actuator and electric unit (control unit)”. Be sure to erase the malfunction information such as DTC not only for “ABS actuator and electric unit (control unit)” but also for ECM after TCS related repair. DTC Logic INFOID:0000000009020864 DTC DETECTION LOGIC NOTE: • If DTC P1212 is displayed with DTC U1001, first perform the trouble diagnosis for DTC U1001. Refer • If DTC P1212 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer Freeze frame data is not stored in the ECM for this self-diagnosis. DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. 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 1. Start engine and let it idle for at least 10 seconds. 2. Check 1st trip DTC. YES >> Proceed to . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000009020865 Perform the trouble diagnosis for TCS. Refer to . NOTE: If DTC P1212 is displayed with DTC UXXXX and/or P0607, perform the following trouble diagnosis. • Trouble diagnosis for DTC UXXXX Refer to • Trouble diagnosis for DTC P0607 Refer to . DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P1212 TCS/CIRC ECM can not receive the information from • Harness or connectors (CAN communication line is open or shorted.) • ABS actuator and electric unit (control unit) |