Pre-Heating System On-Vehicle Inspection


  1. INSPECT ILLUMINATION DURATION OF GLOW INDICATOR LIGHT

  2. INSPECT PRE-HEATING

  3. INSPECT AFTER GLOW TIME

Pre-Heating System -- On-Vehicle Inspection



1. INSPECT ILLUMINATION DURATION OF GLOW INDICATOR LIGHT


  1. Inspect the light illumination duration.



    1. Turn the ignition switch to ON, and then measure the light illumination duration.

      Light illumination duration:
      Refer to the graph.


      Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Kd-Ftv Starting.Pre-Heating System.Pre-Heating System On-Vehicle Inspection


      Text in Illustration
      *a
      		Light Illumination Duration
      		*b
      		Engine Coolant Temperature

    2. Turn the ignition switch off.

      1. If the result is not as specified, inspect the ECM, engine coolant temperature sensor, glow plug and glow relay.
      HINT:
      Actual light illumination duration may vary slightly from the graph.


2. INSPECT PRE-HEATING


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Kd-Ftv Starting.Pre-Heating System.Pre-Heating System On-Vehicle Inspection

  1. Inspect the pre-heating time.

    Text in Illustration
    *a
    		Pre-heating Time
    *b
    		Battery Voltage

    1. Turn the ignition switch to ON. Measure how long it takes for battery voltage to be applied to the glow plugs.

      Standard Time:
      Engine Coolant Temperature
      		Pre-heating Time
      40°C (104°F) or higher
      		1 second
      below 40°C (104°F)
      		Refer to the graph
      (maximum: 15 seconds)

    2. Turn the ignition switch off.

      1. If the result is not as specified, inspect the ECM, engine coolant temperature sensor, glow plug and glow relay.

  1. Turn the ignition switch to START. Check that battery voltage is applied to the glow plugs.

  1. While cranking the engine, measure how long it takes for battery voltage to be applied to the glow plugs.

    Standard Time:
    Engine Coolant Temperature
    		Pre-heating Time
    40°C (104°F) or higher
    		1 second
    below 40°C (104°F)
    		Refer to the graph
    (maximum: 15 seconds)
    1. If the result is not as specified, inspect the ECM, engine coolant temperature sensor, glow plug and glow relay.


3. INSPECT AFTER GLOW TIME


  1. Inspect the afterglow time.



    1. After the engine starts, measure how long it takes for battery voltage to be applied to terminals E4-15 (GREL) and E6-7 (E1) of the ECM.

      Standard Time:
      Tester Connection
      		Specified Condition
      E4-15 (GREL) - E6-7 (E1)
      		Refer to the graph


      Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Kd-Ftv Starting.Pre-Heating System.Pre-Heating System On-Vehicle Inspection


      Text in Illustration
      *a
      		Component with harness connected
      (ECM)
      		*b
      		After Glow Time
      *c
      		Engine Coolant Temperature
      		-
      		-
      1. If the result is not as specified, inspect the ECM, engine coolant temperature sensor, glow plug and glow relay.