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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R Spec V >> Repair and Diagnosis >> External Pages >> Different car >> Section 877 (Anti-Lock Brake System & Traction Control System - Abs/TCS) >> Trouble Diagnoses For Symptoms >> 8. During ABS/TCS Control, Vehicle Behavior is Jerky.
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8. During ABS/TCS Control, Vehicle Behavior is Jerky.

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
  1. ENGINE SPEED SIGNAL INSPECTION 

    Perform data monitor with CONSULT-II for the ABS/TCS control unit.

    Is the engine speed at idle 400 rpm or higher? 

    1. Yes: Condition is normal.
    2. No: GO TO 2.
  2. SELF-DIAGNOSIS RESULT ITEM CHECK 1 

    Perform the TCS/ABS control unit self-diagnosis.

    Is the self-diagnosis result displayed? 

    1. Yes: After checking and repairing the applicable item, perform the ABS/TCS control unit self-diagnosis again.
    2. No: GO TO 3.
  3. ECM SELF-DIAGNOSIS RESULT ITEM CHECK 

    Perform the ECM self-diagnosis. Refer to "CONSULT-II ".

    Does the self-diagnosis result indicate camshaft position sensor? 

    1. Yes: Repair or replace the camshaft position sensor system.
    2. No: GO TO 4.
  4. SELF-DIAGNOSIS RESULT ITEM CHECK 2 

    Disconnect the connectors for the ABS actuator and electric unit (control unit) and ECM, and reconnect them correctly to perform the self-diagnosis again.

    Is inspection result OK? 

    1. OK: Connector malfunction. Repair or replace the connector.
    2. NG: GO TO 5.
  5. SELF-DIAGNOSIS RESULT ITEM CHECK 3 

    Perform the A/T self-diagnosis.

    Is inspection result OK? 

    1. OK: GO TO 6.
    2. NG: Repair or replace the applicable part.
  6. SELF-DIAGNOSIS RESULTS ITEM CHECK 4 

    Perform the ABS/TCS control unit self-diagnosis again.

    Is the self-diagnosis result displayed? 

    1. Yes: Repair or replace the applicable item.
    2. No: GO TO 7.
  7. CIRCUIT CHECK BETWEEN THE ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) AND ECM 
    1. Disconnect the connectors for the ABS actuator and electric unit (control unit) and ECM.
    2. Check the engine speed signal harness between the ABS actuator and electric unit (control unit) and ECM for an open/shorted circuit.
    3. Check the connectors for the ABS actuator and electric unit (control unit) and ECM.

      Is inspection result OK? 

      1. OK: INSPECTION END. 
      2. NG: Connect the connectors to perform the ABS actuator and electric unit (control unit) self-diagnosis again.
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