PRE-HEATING SYSTEM ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. INSPECT ILLUMINATION DURATION OF GLOW INDICATOR LIGHT


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      Text in Illustration
      *a Glow Indicator Lighting Time
      *b Engine Coolant Temperature

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

      Light illumination duration
      Refer to the graph

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

  2. INSPECT PRE-HEATING


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

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

      Standard Pre-heating Time
      Engine Coolant Temperature Specified Condition
      40°C (104°F) or higher 1 sec.
      40°C (104°F) below

      Refer to graph*1

      (15 sec. at longest)

      • *1: The pre-heating time changes depending on the battery voltage.

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

  3. INSPECT AFTER GLOW TIME


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      Text in Illustration
      *a After Glow Time
      *b Engine Coolant Temperature

      After starting the engine starting, measure the time that battery voltage is applied to the terminal GREL of the ECM.

      After glow time
      Refer to the graph

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