Question: Which field terminal do I ground? I want to perform a full-field test on a Chrysler alternator that isn't working. Both field terminals have the same voltage and the two field wires go through a black rectangular thing that's bolted to the rear of the alternator. How do I tell which which terminal goes to the voltage regulator?
Answer: Use a test light and a digital voltmeter at the same time to measure the voltages on the two field terminals. The terminal you want to ground will be the one with about 0.2 volts less than the other one. For the full details, see Which terminal do I ground?
Question: How do I reprogram a '96 or newer Chrysler minivan HVAC computer? The battery had to be disconnected for service to the electrical system. Now all six yellow leds in the switches are flashing.
Answer: This computer loses its memory when it or the battery is disconnected. Recalibrating it involves two self-test procedures. The "Actuator" test is very straightforward and usually passes on the first attempt unless a mode door position sensor problem is detected. The "cool-down" test can be very frustrating and may require up to 20 attempts before it passes so don't give up. It is necessary for the air conditioning system to be working properly for this test to pass. For the complete procedure, see: "Reprogramming the Chrysler HVAC Computer".