ACTIVE NOISE CONTROL SYSTEM, Diagnostic DTC:P033531

DTC Code DTC Name
P033531 Crankshaft Position Sensor "A" No Signal

DESCRIPTION

This DTC is output when a malfunction has occurred in the engine pulse signal system from the ECM.

DTC No. Detection Item DTC Detection Condition Trouble Area
P033531 Crankshaft Position Sensor "A" No Signal Engine running, engine speed is 500 rpm or higher and below 6000 rpm 3 seconds after the engine switch is turned on (ACC), the stereo component equalizer assembly detects a malfunction in the engine pulse signal system for 10 seconds or more continuously*

  • Harness or connector

  • ECM

  • Stereo component equalizer assembly

Tech Tips

*: Malfunction monitoring is not performed during the following conditions to prevent erroneous detection.


  • The battery voltage is less than 9.5 V.

  • Before 3 seconds have elapsed after battery voltage has returned to normal.

WIRING DIAGRAM

B000Z6IE01
*a NEI
*b Stereo Component Equalizer Assembly

CAUTION / NOTICE / HINT

Note

Refer to Click here when replacing the ECM.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Active Noise Control > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Active Noise Control > Trouble Codes
      OK
      DTC P033531 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (STEREO COMPONENT EQUALIZER ASSEMBLY - ECM)


    1. Disconnect the X8 stereo component equalizer assembly connector.

    2. Disconnect the A58 ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      X8-3 (NEI) - A58-30 (NEO) Always Below 1 Ω
      X8-3 (NEI) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK ECM


    1. According to the table and using an oscilloscope, measure the waveform with the stereo component equalizer assembly connected.

      B000W75C02
      *a

      Component with harness connected

      (Stereo Component Equalizer Assembly)

      		 *b Waveform
      Item Condition
      Measurement terminal X8-3 (NEI) - Body ground
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Idling with warm engine
      OK
      The waveform is similar to that shown in the illustration.

      Tech Tips

      The oscilloscope waveform shown in the illustration is an example for reference only. The waveform fluctuates according to engine speed.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE STEREO COMPONENT EQUALIZER ASSEMBLY Click here

    NG

    GO TO SFI SYSTEM w/ Canister Pump Module: GO TO SFI SYSTEM Click here
    GO TO SFI SYSTEM w/o Canister Pump Module: GO TO SFI SYSTEM Click here