ECD SYSTEM, Diagnostic DTC:32 (1)

DTC Code DTC Name
32 (1) Injection Pump System Malfunction

DESCRIPTION

To compensate for the change in injection volume and injection timing caused by the variance in the injection pump itself, a correction is made by using the data that is stored in the ROM in the fuel pump correction unit.

DTC No. DTC Detection Condition Trouble Area
32 (1)

  • When the ignition switch is turned to ON, or when the ECM determines if there is an error in the RAM of the ECM, the ECM conducts single communication. If one of the following conditions occurs in single communication, the ECM conducts another communication. While the ECM is conducting communication, the ECM stores DTC 32 (1) if (a) occurs 20 times continuously, (b) occurs 20 times continuously, or (c) occurs 2 times continuously.

  • (a) There was a communication error when receiving data.

  • (b) Data sent from the injection pump correction unit does not match the data received in the ECM.

  • (c) Data received from the pump ROM is not input for 1024 msec.

    Tech Tips

    Even when determining if the process is completed normally, if an undefined code is found while checking the identification code of data received, the ECM conducts communication again. If an undefined code occurs 20 times continuously, the ECM stores DTC 32 (1).

  • Open or short in injection pump correction unit circuit

  • Injection pump correction unit

  • ECM

WIRING DIAGRAM

A01DRZZE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (ECM - INJECTION PUMP CORRECTION UNIT)


    1. Disconnect the injection pump correction unit connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      C107-1 (DATA) - C102-6 (DATA) Always Below 1 Ω
      C107-4 (CLK) - C102-14 (CLK) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C107-1 (DATA) or C102-6 (DATA) - Body ground Always 10 kΩ or higher
      C107-4 (CLK) or C102-14 (CLK) - Body ground Always 10 kΩ or higher

    4. Reconnect the injection pump correction unit connector.

    5. Reconnect the ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. REPLACE INJECTION PUMP ASSEMBLY


    1. Replace the injection pump assembly Click here.


    NEXT

  3. CHECK DTC OUTPUT (CHECK IF DTC 32 (1) IS OUTPUT AGAIN)


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTC Click here.

    3. Turn the ignition switch to ON and turn the tester on.

    4. Enter the following menus: Powertrain / Engine and ECT / DTC.

    5. Read the DTCs Click here.

      Result
      Result Proceed to
      DTC 32 (1) output again A
      No DTC output B

    B

    SYSTEM OK

    A

    REPLACE ECM Click here