Ecd System Injector Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK INJECTOR DRIVER (POWER SOURCE)

INSPECT NO. 1 INTEGRATION RELAY (EDU)

CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY [EDU] - INJECTOR DRIVER)

CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - ECM)

ECD SYSTEM - Injector Circuit


DESCRIPTION

The injector driver drives the injectors at high speeds with a high-voltage DC/DC converter. The ECM constantly monitors the injector driver and stops the engine if an abnormal condition is detected.

WIRING DIAGRAM

Refer to DTC P0200 (Toyota Fortuner RM00000187V034X_06.html).

INSPECTION PROCEDURE

NOTICE:
  1. After replacing the ECM, the new ECM needs registration (Toyota Fortuner RM0000012XK04AX.html) and initialization (Toyota Fortuner RM000000TIN04KX.html).
  2. Inspect the fuses of circuits related to this system before performing the following inspection procedure.
1.CHECK INJECTOR DRIVER (POWER SOURCE)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Kd-Ftv Engine Control System.Ecd System.Ecd System Injector Circuit

  1. Disconnect the injector driver connectors.

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    I14-2 (+B) - I14-3 (GND)
    		Ignition switch ON
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Injector Driver)

  1. Reconnect the injector driver connector.



NG
Go to step 2
OK

REPLACE INJECTOR DRIVER (Toyota Fortuner RM000002YZ3010X.html)

2.INSPECT NO. 1 INTEGRATION RELAY (EDU)

  1. Inspect the No. 1 integration relay (EDU) (Toyota Fortuner RM0000014TJ02IX.html).



NG
REPLACE NO. 1 INTEGRATION RELAY (EDU)
OK


3.CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY [EDU] - INJECTOR DRIVER)

  1. Remove the No. 1 integration relay from the engine room relay block and junction block assembly.

  1. Disconnect the injector driver connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    I14-2 (+B) - 1J-8
    		Always
    		Below 1 Ω
    I14-3 (GND) - Body ground
    		Always
    		Below 1 Ω
    I14-2 (+B) or 1J-8 - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the No. 1 injector driver connector.

  1. Reinstall the integration relay.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (NO. 1 INTEGRATION RELAY - ECM)

  1. Remove the No. 1 integration relay from the engine room relay block and junction block assembly.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    E4-10 (IREL) - 1J-7
    		Always
    		Below 1 Ω
    E4-10 (IREL) or 1J-7 - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the ECM connector.

  1. Reinstall the No. 1 integration relay.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Toyota Fortuner RM0000043H100CX.html)