Dtc 32 (1) Injection Pump System Malfunction


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

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

REPLACE INJECTION PUMP ASSEMBLY

CHECK DTC OUTPUT (DTC 32 (1) IS OUTPUT AGAIN)

DTC 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)
  1. When ignition switch is turned ON, or when ECM determines if there is error in RAM of ECM, ECM conducts single communication. If one of following conditions occurs in single communication, ECM conducts another communication. While ECM is conducting communication, ECM detects DTC 32 (1) if (a) occurs 20 times continuously, (b) occurs 20 times continuously, or (c) occurs 2 times continuously.
  2. (a) There was communication error when receiving data.
  3. (b) Data sent from injection pump correction unit does not match data received in ECM.
  4. (c) Data received from pump ROM is not input for 1024 msec.
    HINT:
    Even when determining if process is completed normally, if undefined code is found while checking identification code of data received, ECM conducts communication again. If undefined code occurs 20 times continuously, ECM detects DTC 32 (1).
  1. Open or short in injection pump correction unit circuit
  2. Injection pump correction unit
  3. ECM

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System. Dtc 32 (1) Injection Pump System Malfunction


INSPECTION PROCEDURE

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


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.5L-E Engine Control System.Ecd System. Dtc 32 (1) Injection Pump System Malfunction

  1. Disconnect the I12 injection pump correction unit connector.

  1. Disconnect the E21 ECM connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    I12-1 (DATA) - E21-6 (DATA)
    		Below 1 Ω
    I12-4 (CLK) - E21-14 (CLK)
    		Below 1 Ω
    I12-1 (DATA) or E21-6 (DATA) - Body ground
    		10 kΩ or higher
    I12-4 (CLK) or E21-14 (CLK) - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.REPLACE INJECTION PUMP ASSEMBLY

NEXT


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

  1. Clear the DTC (Toyota Fortuner RM000000VR600DX.html).

  1. Turn the ignition switch ON.

  1. Check the DTC (Toyota Fortuner RM000000VR600DX.html).

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


B
SYSTEM OK
A

REPLACE ECM