Dtc P1625 Idle Signal Transmitter Circuit

Двигатель. Toyota Rav4. Aca30, 33, 38 Ala30
Система Управления Двигателем 2Ad-Fhv. Toyota Rav4. Aca30, 33, 38 Ala30

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK WIRE HARNESS (EDU - ECM)

REPLACE EDU

CHECK WHETHER DTC OUTPUT RECURS

DTC P1625 Idle Signal Transmitter Circuit


DESCRIPTION

The ECM reduces injector operation speed and applied voltage to the injector to reduce the sound it produces during idling. To do this, the ECM outputs applied voltage switching signals to terminal IJEN of the EDU from terminal IDLO of the ECM.

DTC No.
DTC Detection Condition
Trouble Area
P1625
When either condition below is met:
  1. With the engine running at idle, voltage of the ECM IDLO terminal is 0.05 V or less for 3 seconds or more.
  2. With the engine running at speeds higher than idle, voltage of the ECM IDLO terminal is 3.4 V or more for 3 seconds or more.
  1. Open or short in idle control circuit
  2. ECM

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P1625 Idle Signal Transmitter Circuit


INSPECTION PROCEDURE

ПРИМЕЧАНИЕ:
After replacing the ECM, the new ECM needs registration (see page RAV4_ACA30 RM000000TJ4007X.html) and initialization (see page RAV4_ACA30 RM000000TIN007X.html).
1.CHECK WIRE HARNESS (EDU - ECM)


    Toyota Rav4. Aca30, 33, 38 Ala30.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P1625 Idle Signal Transmitter Circuit

  1. Disconnect the B51 EDU connector.

  1. Disconnect the B32 ECM connector.

  1. Measure the resistance of the wire harness connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    B51-2 (IJEN) - B32-62 (IDLO)
    		Below 1 Ω
    B51-2 (IJEN) - B32-62 (IDLO) - Body ground
    		10 kΩ or higher

  1. Reconnect the EDU connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


2.REPLACE EDU

  1. Replace the EDU (see page RAV4_ACA30 RM0000015C2002X.html).


NEXT


3.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester ON.

  1. Clear DTCs (see page RAV4_ACA30 RM000000PDK01FX.html).

  1. Start the engine and drive the vehicle for approximately 15 minutes.

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

  1. Read the DTCs.

    Result:
    Display (DTC Output)
    		Proceed to
    P1625
    		A
    No output
    		B


OK
SYSTEM IS OK
NG

REPLACE ECM