PRE-HEATING SYSTEM ON-VEHICLE INSPECTION

Note

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


  1. INSPECT ILLUMINATION DURATION OF GLOW INDICATOR LIGHT (for DPF)


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

      Light illumination duration
      Refer to the table and graph
      Standard Light Illumination Time
      Engine Coolant Temperature Specified Condition
      -20°C (-4°F) 2.0 to 3.0 seconds
      -15°C (5°F) 1.0 to 2.0 seconds
      0°C (32°F) 1.0 seconds
      35°C (95°F) 0.45 to 1.0 seconds
      A00OT4JE01
      Text in Illustration
      *1 Seconds *2

      Engine Coolant Temperature

      °C (°F)

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

  2. INSPECT ILLUMINATION DURATION OF GLOW INDICATOR LIGHT (for CCo)


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

      Light illumination duration
      Refer to the table and graph
      Standard Light Illumination Time
      Engine Coolant Temperature Specified Condition
      -20°C (-4°F) 10 to 12 seconds
      -15°C (5°F) 6.0 to 8.0 seconds
      0°C (32°F) 3.0 to 5.0 seconds
      35°C (95°F) 0.45 to 1.0 seconds
      A00OR7LE02
      Text in Illustration
      *1 Seconds *2

      Engine Coolant Temperature

      °C (°F)

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

  3. INSPECT PRE-HEATING (for DPF)


    1. 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
      Condition Pre-heating Time
      Battery voltage at 14.5 V or higher 1 second
      Battery voltage at 14.5 V or less

      Refer to the graph*1

      (Maximum 15 seconds)

      *1: Pre-heating time changes depending on engine coolant temperature.

      A00OTUPE01
      Text in Illustration
      *1 Seconds *2

      Engine Coolant Temperature

      °C (°F)

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

  4. INSPECT PRE-HEATING (for CCo)


    1. 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
      Condition Pre-heating Time
      Engine coolant temperature at 40°C (104°F) or higher 1 second
      Engine coolant temperature at 40°C (104°F) or less

      Refer to the graph*1

      (Maximum 15 seconds)

      *1: Pre-heating time changes depending on battery voltage.

      A00OSCVE02
      Text in Illustration
      *1 Seconds *2 Battery Voltage (V)
      *3 Pre-heating Time - -

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

  5. INSPECT AFTER GLOW TIME


    1. A00OVFAE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Glow Plug Relay)

      Remove the glow plug relay.

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

      Standard After Glow Time
      Tester Connection Condition Specified Condition
      A51-2 - Body ground After engine starts Refer to the graph above
      A00OUFVE01
      Text in Illustration
      *A for DPF *B for CCo
      *1 Seconds *2

      Engine Coolant Temperature

      °C (°F)
      *3 After Glow Time - -

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