Dtc P1625 Idle Signal Transmitter Circuit. Corolla Auris

Двигатель. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Система Управления Двигателем 2Ad-Fhv. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (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


COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.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 Нажмите здесь) and initialization (See page Нажмите здесь).
1.CHECK HARNESS AND CONNECTOR (EDU - ECM)


    COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P1625 Idle Signal Transmitter Circuit

  1. Disconnect the B84 EDU connector.

  1. Disconnect the B31 ECM connector.

  1. Measure the resistance of the wire harness connectors.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    B84-2 (IJEN) - B31-62 (IDLO)
    		Always
    		Below 1 Ω
    B84-2 (IJEN) or B31-62 (IDLO) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the EDU connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (EDU - ECM)
OK


2.REPLACE EDU

  1. Replace the EDU (See page Нажмите здесь).


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 Нажмите здесь).

  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


B
REPLACE ECM (Нажмите здесь)
A

SYSTEM IS OK