PRE-HEATING SYSTEM ON-VEHICLE INSPECTION

INSPECT LIGHTING TIME OF GLOW INDICATOR LIGHT

1. 

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

   Lighting time
   Refer to the graph

   Table 1. Text in Illustration

   *a	Glow Indicator Lighting Time
   *b	Engine Coolant Temperature

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

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
   Engine Coolant Temperature Specified Condition 40°C (104°F) or higher 1 second Below 40°C (104°F) Refer to the graph (15 seconds at longest)

   Table 2. Text in Illustration

   *a	Pre-heating Time
   *b	Battery Voltage

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

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

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

   Pre-heating Time
   Engine Coolant Temperature Specified Condition 40°C (104°F) or higher 1 second Below 40°C (104°F) Refer to the graph (15 seconds at longest)

INSPECT AFTER GLOW TIME

1. 

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

   After glow time
   Refer to the graph

   Table 3. Text in Illustration

   *a	After Glow Time
   *b	Engine Coolant Temperature

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