#
GLOW CONTROL OPERATION [MZR-CD (RF Turbo)]

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• The glow plug relay operates under the following conditions:

  - During preheating timer operation
  - During engine cranking
  - While outer glow is operating

## Preheating Timer

• The PCM operates the glow plug relay for several seconds after the engine switch is turned to the ON position according to the engine coolant temperature. The higher the engine coolant temperature, the shorter the period of the timer operation.
• The glow indicator light illuminates during the preheating timer operation to inform the driver that the glow system is operating.

## Glow Continuation Timer

• The PCM operates the glow plug relay for 4 min. after the engine has been started with the engine coolant temperature lower than 10 °C {50 °F}. When the engine coolant temperature reaches 10 °C {50 °F} or more, the glow continuation timer is cancelled.