PRE-HEATING SYSTEM ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   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.

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

      Table 1. Text in Illustration

      *a	Second	*b	Engine Coolant Temperature
      *c	Glow Time	-	-

      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.) -25 (-13) 10 -10 (14) 6 0 (32) 4.5 20 (68) 0.5 40 (104) 0.5 60 (140) 0.5

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   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.

      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.

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

   3. 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.

      Table 2. Text in Illustration

      *a	Second	*b	Pre-heating Time
      *c	Battery Voltage [V]	-	-

      Note:

      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. Click here

   INSPECT AFTER GLOW TIME

   
   
   1. 

      Remove the glow plug relay.

      Table 3. Text in Illustration

      *a	Front view of wire harness connector (to Glow Plug Relay)

   2. 

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

      After Glow Time
      Tester Connection Condition Specified Condition B76-2 - Body ground - Refer to the graph above*1

      *1: After glow time depending on atmospheric pressure and engine coolant temperature.

      Table 4. Text in Illustration

      *a	Second	*b	After Glow Time
      *c	Engine Coolant Temperature	-	-

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