How to test the AZC system in a Jeep Grand Cherokee?

How to test the AZC system in a Jeep Grand Cherokee?

Turn the ignition on. Do not touch any of the Heater / AC / AZC controls for at least 2 minutes to allow the calibration function to run entirely. After 2 minutes, shut down the vehicle and restart. Test functionality of Heater / A/C / AZC system.

What kind of controls does a jeep heater use?

The manual temperature control HVAC system uses a combination of electrical, and vacuum controls. The Automatic Zone Control HVAC system uses only electrical controls. These controls provide the vehicle operator with a number of setting options to help control the climate and comfort within the vehicle.

How does the AZC module work on a jeep heater?

The AZC Module actuator commutator pulses per revolution. Using these parameters, the AZC Module runs the actuator for the number of commutator pulses that correspond to the desired door position. To maintain accuracy, the system recalibrates itself periodically at known zero and full travel conditions.

How to test the temperature of a jeep heater?

Rotate the left temperature control knob clockwise (CW) one detent. 2. If you continue to keep the a/c and recirc buttons depressed, the AZC control module will perform a Segment Test of the Vacuum Fluorescent (VF) display.

Why does my Jeep Grand Cherokee have dual climate control?

Jeep Grand Cherokees with dual climate control (for the AC / Heater system) that have incorrect air temperature blowing on either the passenger or driver’s side is usually one of two things.

Turn the ignition on. Do not touch any of the Heater / AC / AZC controls for at least 2 minutes to allow the calibration function to run entirely. After 2 minutes, shut down the vehicle and restart. Test functionality of Heater / A/C / AZC system.

The manual temperature control HVAC system uses a combination of electrical, and vacuum controls. The Automatic Zone Control HVAC system uses only electrical controls. These controls provide the vehicle operator with a number of setting options to help control the climate and comfort within the vehicle.

The AZC Module actuator commutator pulses per revolution. Using these parameters, the AZC Module runs the actuator for the number of commutator pulses that correspond to the desired door position. To maintain accuracy, the system recalibrates itself periodically at known zero and full travel conditions.

What is the a / C system on a Jeep Grand Cherokee?

The A/C system in your Grand Cherokee consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

Can you add Freon to a 1999 Jeep Grand Cherokee?

If there is a problem with your compressor or evaporator, adding freon will not restore cooling. How to add freon to your 1999 Jeep Grand Cherokee: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure.

Can you replace the reverse light on a 1999 Grand Cherokee?

Replace reverse light White light when you back up – yup, they burn out and you can replace them with bright LEDs 1999 Jeep Grand Cherokee Limited 4.0L 6 Cyl. Check power steering fluid level Power steering fluid is easy to check and many people (mechanics included) often forget about – learn how here 1999 Jeep Grand Cherokee Limited 4.0L 6 Cyl.

How do you change AZC on a Jeep Grand Cherokee?

Set the AZC to automatic. 3. Turn the ignition off. 4. Remove the IOD fuse (Large 50 amp fuse #15 JB) from the Power Distribution Center. Wait 30 seconds, and then reinstall it. 5. Turn the ignition on. Do not touch any of the Heater / AC / AZC controls for at least 2 minutes to allow the calibration function to run entirely.

What kind of engine does a 1999 Jeep Grand Cherokee have?

The Used 1999 Jeep Grand Cherokee is offered in the following submodels: Grand Cherokee SUV. Available styles include Laredo 4dr SUV, Limited 4dr SUV, Limited 4dr SUV 4WD, and Laredo 4dr SUV 4WD. Pre-owned Jeep Grand Cherokee models are available with a 4.0 L-liter gas engine, with output up to 195 hp, depending on engine type.

What kind of cooling system does a Jeep Comanche use?

1987-1992 Jeep Comanche (MJ) w/ LHD; w/ 4.0L engine.Application: Cherokee Cooling System. Coolant Bottle for Jeep Cherokee XJ w/ 4 cyl engine.

What did it cost to fix a 1999 Jeep Grand Cherokee?

Instead of paying hundreds to fix an electric problem I simply went to a junk yard and pulled a mechanical fan from a 98 jeep and swapped mine out. it cost me 40 bucks. I was reading other reviews laughing and had to add my own.

How to calibrate a jeep heater fault code?

1. Turn the ignition on. 2. Set the AZC to automatic. 3. Turn the ignition off. 4. Remove the IOD fuse from the Power Distribution Center. Wait several seconds, and then install the IOD fuse. 5. Turn the ignition on. Do not touch any of the AZC controls for at least one minute to allow the calibration

What are the features of the AZC control panel?

The AZC control panel also features a recirculation push button switch and a vacuum fluorescent display area. passenger compartment air temperature. Dual infrared sensors mounted in the face of the control unit changing conditions. Dual Zone temperature control provides wide side-to-side variation in comfort

How does AZC recalibration work on Jeep Grand Cherokee?

AZC Blend Door Recalibration Process. 1. Turn the ignition on. 2. Set the AZC to automatic. 3. Turn the ignition off. 4. Remove the IOD fuse (Large 50 amp fuse #15 JB) from the Power Distribution Center.

Where to find fault code on Jeep heater?

If there are no fault codes, the “00” display value will remain in the VF window. Should there be any codes, faults in the order they occurred). The left side set temperature display will be blanked and the right side set

Rotate the left temperature control knob clockwise (CW) one detent. 2. If you continue to keep the a/c and recirc buttons depressed, the AZC control module will perform a Segment Test of the Vacuum Fluorescent (VF) display.