PRE-HEATING SYSTEM > ON-VEHICLE INSPECTION

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NOTICE:
Turn the ignition switch off for 60 seconds before performing the following inspections.



1. INSPECT LIGHTING DURATION OF GLOW INDICATOR LIGHT


  1. Turn the ignition switch to ON and measure the duration of time that the light remains illuminated.


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    Light illumination duration:
    Refer to the graph and the table *1
    *1: Lighting duration depending on atmospheric pressure.

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

    Light Illumination Duration:

    Engine Coolant Temperature
    °C (°F)
    		Light Illumination Time
    (sec.)
    -20 (-4)
    		15
    0 (32)
    		10
    10 (50)
    		8
    20 (68)
    		5
    40 (104)
    		3



2. INSPECT PRE-HEATING


  1. Turn the ignition switch to ON and measure the length of time that battery voltage is applied to the glow plugs.


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    Pre-heating time:
    Refer to the graph *1
    *1: Pre-heating time changes depending on battery voltage and engine coolant temperature.

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

  1. Turn the ignition switch to the START position and check that the battery voltage is applied to the glow plugs.

  1. While cranking the engine, measure the length of time that battery voltage is applied to the glow plugs.

    Pre-heating time:
    Refer to the graph *1
    *1: Pre-heating time changes depending on battery voltage and engine coolant temperature.

    NOTICE:
    Do not start the engine.

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



3. INSPECT AFTER GLOW TIME


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  1. Remove the glow plug relay.
    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Glow Plug Relay)



  1. After the engine starts, measure the length of time that battery voltage remains present.


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    After Glow Time:

    Tester Connection
    		Condition
    		Specified Condition
    B11-2 - Body ground
    		-
    		Refer to the graph above*1

    *1: After glow time depending on atmospheric pressure and engine coolant temperature.
    If the result is not as specified, check the ECM, engine coolant temperature sensor, glow plug and glow plug relay.