INSPECT ILLUMINATION DURATION OF GLOW INDICATOR LIGHT

INSPECT PRE-HEATING

INSPECT AFTER GLOW TIME

Turn the engine switch on (IG), and measure the duration of time that the light remains illuminated.

• Light illumination duration:
• Refer to the graph and the table.

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

• Light illumination duration:

• Water temperature °C (°F)	Light illumination time (sec.)
  -20 (-4)	10 to 12
  -15 (5)	5 to 6
  0 (32)	3 to 4
  35 (95)	0.45 to 1

Turn the engine switch on (IG) and measure the length of time that battery voltage is applied to the glow plugs.

• Pre-heating time:

• Engine coolant temperature	Pre-heating time
  more than 40°C (104°F)	1 sec.
  40°C (104°F) or less	Refer to the graph*1 (15 sec. at the longest)

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

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

Turn the engine switch on (START) and verify that battery voltage is applied to the glow plugs.

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

• Pre-heating time:

• Engine coolant temperature	Pre-heating time (Battery Voltage 14.5 V or less)	Pre-heating time (Battery Voltage 14.5 V or more)
  more than 40°C (104°F)	1 sec.	1 sec.
  40°C (104°F) or less	1 sec.	Voltage is constantly applied while cranking the engine.

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

After the engine starts, measure the length of time that battery voltage remains present at terminal GREL (E59-58) of the ECM.

• After glow time:
• Refer to the graph.

If the result is not as specified, check the ECM.