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Home >> Pontiac >> 2001 >> Aztek Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Fuel System (Diesel) >> Normal Glow Plug Circuit Operation >> Function Check
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Function Check

  1. With ignition on, engine not running and at room temperature, glow plugs are on for 4-6 seconds, and then off for about 4.5 seconds. Following this on-and-off cycle, glow plugs are on for about one second and off for about 3 seconds. The glow plugs continue to cycle on and off in this time sequence for about 16 seconds.
  2. If engine is cranked during or after the above sequence, glow plugs will cycle on and off for a total duration of 25 seconds after ignition switch is returned from crank position, whether engine starts or not. Engine does not have to be running to terminate glow plug cycling.
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