Where is the AC relay on a Nissan Frontier?
Once again – Your vehicle has an AC relay, located inside the IPDM. It’s shown on Page MTC-39 of your factory service manual (among other places). Being mechanical devices with moving pieces, relays are one of the most failure-prone electrical parts – which is why I’d confirm that it’s not the culprit first.
How do you check the fuse on a Nissan Frontier?
Be sure the ignition switch is pushed to the OFF or LOCK position and all switch are OFF. Open the fuse box cover. On the fuse diagram, find the number of the fuse you want to check. The diagram tells you where to locate the fuse on the panel. Pinch the fuse perpendicularly with the fuse puller and pull it out.
How is the compressor clutch relay turned on and off?
In some vehicles the compressor clutch relay is turned on and off by the low pressure switch and the evaporator temperature sensor. In a computer controlled system, the compressor clutch relay is grounded by the computer. If the fuse is good, disconnect the electrical connector from the compressor clutch coil.
How can I tell if my AC clutch relay is working?
This test confirms that the interior A/C control switches are functioning. Now plug the relay back in and disconnect the two-wire feed at the A/C compressor connection. One wire should be “hot,” if not, the relay is not sending power to the A/C compressor. If it is, then the relay is functioning correctly and the A/C clutch is bad.
Be sure the ignition switch is pushed to the OFF or LOCK position and all switch are OFF. Open the fuse box cover. On the fuse diagram, find the number of the fuse you want to check. The diagram tells you where to locate the fuse on the panel. Pinch the fuse perpendicularly with the fuse puller and pull it out.
Once again – Your vehicle has an AC relay, located inside the IPDM. It’s shown on Page MTC-39 of your factory service manual (among other places). Being mechanical devices with moving pieces, relays are one of the most failure-prone electrical parts – which is why I’d confirm that it’s not the culprit first.
In some vehicles the compressor clutch relay is turned on and off by the low pressure switch and the evaporator temperature sensor. In a computer controlled system, the compressor clutch relay is grounded by the computer. If the fuse is good, disconnect the electrical connector from the compressor clutch coil.
This test confirms that the interior A/C control switches are functioning. Now plug the relay back in and disconnect the two-wire feed at the A/C compressor connection. One wire should be “hot,” if not, the relay is not sending power to the A/C compressor. If it is, then the relay is functioning correctly and the A/C clutch is bad.
Where is the ipdm located on a Nissan Frontier?
But I thought that the thermistor was the resistor that controls the fan speeds. On the 2011 and 2012 models, the IPDM is located in the engine compartment, passenger side, near the firewall. It would really help of you could download a 2006 factory service manual.
Why is the pressure switch not getting power?
Quick recap: compressor is not getting power, pressure switch is not getting power, but the AC fuse is good. When I applied power directly from the battery to the compressor the clutch engaged. The 2006 engine has an intake sensor on top of the evaporator box.
Where is the intake sensor on a 2006 Nissan Frontier?
The 2006 engine has an intake sensor on top of the evaporator box. I got that out and ran the diagnostic tests from the FSM. I have continuity to and from the front air control connector to the intake sensor harness. I have roughly 5 volts on the sensor harness. This would suggest that I have a bad sensor.
Why is my AC compressor not getting power?
Typically, there is a wire going to the IPDM that controls a particular relay – i.e., applies voltage to the relay coil to energize that relay. If you’re measuring voltage on that wire – but not getting any voltage out of the relay – then the relay itself is suspect.
Is there a thermal control amplifier on my 2006 Frontier?
Sometimes, just giving the outside of the relay a hard smack will jar its contacts enough to get voltage out of it again – which also confirms that it needs to be replaced. So is there a Thermal Control Amplifier on my 2006 Frontier?
Why is the AC not engaging on my Nissan Frontier?
I recently moved back to Colorado from being in Vegas, so I’m thinking it didn’t like the trip. It is a 2007 frontier with 105k miles. I can cycle through all the speed settings on the blower just fine. AC light comes on but I can’t feel or hear the compressor engage. I checked the fuse under the hood and it was good (10 amp fuse).
What does it mean when your AC compressor does not turn on?
When the compressor doesn’t turn on at all, it can mean a couple different things. You are either too low on freon, you have a power/ground issue meaning the compressor isn’t receiving the signal to turn on, or the clutch itself is bad.
Why does my air conditioner keep running all the time?
The hottest days of summer are over, however you find the air conditioner on your car running all the time, or cycling on and off continuously. If it’s not because of the weather, then AC compressor stays on all the time means there is something wrong with the unit.
Why is my AC clutch not turning on?
You are either too low on freon, you have a power/ground issue meaning the compressor isn’t receiving the signal to turn on, or the clutch itself is bad. You will need a set of AC pressure gauges to check the following. Click on the image to get more detail on the gauges.
What to do if your AC relay quits?
Test the thermal fuse inside for continuity. If the fuse is open (bad) replace with one from eBay or take the chance and jump it (not recommended but it will work until your compressor quits at which point it could break your serpentine belt.)
Typically, there is a wire going to the IPDM that controls a particular relay – i.e., applies voltage to the relay coil to energize that relay. If you’re measuring voltage on that wire – but not getting any voltage out of the relay – then the relay itself is suspect.
Test the thermal fuse inside for continuity. If the fuse is open (bad) replace with one from eBay or take the chance and jump it (not recommended but it will work until your compressor quits at which point it could break your serpentine belt.)
Quick recap: compressor is not getting power, pressure switch is not getting power, but the AC fuse is good. When I applied power directly from the battery to the compressor the clutch engaged. The 2006 engine has an intake sensor on top of the evaporator box.