Ecd System (W/ Egr Cooler) Starter Signal Circuit

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
1Kd-Ftv Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL)

CHECK HARNESS AND CONNECTOR (STARTER RELAY [ST] - ECM)

ECD SYSTEM (w/ EGR Cooler) - Starter Signal Circuit


DESCRIPTION

While the engine is being cranked, current flows from terminal ST2 of the ignition switch to the park/neutral position switch and also flows to terminal STA of the ECM (STA Signal).

WIRING DIAGRAM

Refer to DTC P0617 (HILUX_TGN26 RM000000TA017YX_05.html).

INSPECTION PROCEDURE

NOTICE:
  1. Inspect the fuses of circuits related to this system before performing the following inspection procedure.
  2. After replacing the ECM, the new ECM needs registration (HILUX_TGN26 RM0000012XK07FX.html) and initialization (HILUX_TGN26 RM000000TIN04CX.html).
HINT:
This chart is based on the premise that the engine can crank normally. If the engine cannot crank normally, proceed to Problem Symptoms Table (HILUX_TGN26 RM0000012WF073X.html).
1.READ VALUE USING INTELLIGENT TESTER (STARTER SIGNAL)
  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / Data List / Starter Signal.

  1. Read the value.

    OK:

    Ignition Switch Condition
    Starter Signal
    ON
    OFF
    START
    ON


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (HILUX_TGN26 RM0000012WF073X.html)

2.CHECK HARNESS AND CONNECTOR (STARTER RELAY [ST] - ECM)
  1. Remove the starter relay (ST) 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
    ST relay terminal 1 - G39-7 (STA)
    Always
    Below 1 Ω
    ST relay terminal 1 or G39-7 (STA) - Body ground
    Always
    10 kΩ or higher
  1. Reinstall the starter relay (ST).

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (STARTER RELAY [ST] - ECM)
OK

REPLACE ECM