PRE-HEATING SYSTEM ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

PROCEDURE

1. INSPECT ILLUMINATION 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 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

      

      *1

      Seconds

      *2

      Engine Coolant Temperature

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

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.

      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*A (Maximum 15 seconds)

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

      

      *1

      Seconds

      *2

      Engine Coolant Temperature

      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

   1. 

      *a	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
      B38-2 - Body ground	After engine starts	Refer to the graph below

      

      *1	Seconds	*2	Engine Coolant Temperature
      *3	After Glow Time	-	-

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