Turn the ignition switch to the “O N ” position.
Do not start the engine.
The solenoids (2) should click on.
NOTE: If the engine has been running, the temperature is probably above 15°C [59°F],
After the preheat period, the “ Wait to Start” light will go off and not flash.
Set the multimeter scale to read DC-voltage.
Connect the multimeter lead to the intake manifold heater terminals. Check each terminal individually.
If voltage is present, check the pull-in coil of the solenoids.
Check for voltage at the pull-in coil of solenoid.
1. If voltage at pull-in coil, replace electronic control module.
2. If no voltage present at pull-in, replace solenoid.
Start the engine.
Do not hold the ignition switch in the start position longer than 10 seconds.
If the engine does not start, turn the ignition switch to the “ OFF” position.
Return the ignition switch to the “ O N ” position then begin the normal starting cycle again.
