Q: ASD relay not activating

asked by on

Durango will crank freely but won't start. The only codes showing were "Misfire Cyl 1" and "Misfire Cyl 3". As the most likely culprits, I changed the camshaft and crankshaft sensors. No luck. I started looking at the ASD relay & PCM. I found the ASD relay coil was not getting ground to activate. I can manually ground the coil and the vehicle will start. I found that on the PCM, Connector 3, Pin 3, that the ground signal was being sent from the PCM, but nothing was happening at the ASD relay. There is no continuity between the PCM Conn 3, Pin 3 and the coil. I can also jump from that pin to the relay coil and it starts OK. The closest wiring diagram I could find was for a 2004 Dakota, which indicates there is a direct connection from that pin to the relay coil. At the PCM, Conn 3 Pin 3, is a brown/white wire (maybe brown/grey?). At the relay coil is a brown/green. I need a full wiring diagram so that I know where that wire is going before it goes to the relay coil

My car has 155000 miles.
My car has an automatic transmission.

Hello. If you require an accurate wiring diagram you will be able to find one in the vehicle’s service manual, or a quality repair manual. You may also be able to acquire the diagrams through a dealership or shop, or possibly online. I would also test the ASD relay, as it may be possible that it has failed and is no longer switching properly, which would warrant a replacement. If you are unable to source a diagram or are unsure what the issue could be I would recommend having a professional technician, such as one from YourMechanic visit your location to diagnose what may be causing the issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. ASD relay not activating

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car losing power; etc light

When a warning light illuminates, usually there is a module with a stored fault code that has detected a system error. Have a technician experienced with vehicle electronics scan the vehicle for any stored codes and observe vehicle data. ...

Q: Some time when im driving my truck i hit the smallest bump all my dash lights come on. As if my car cut off but it doesnt.

The instrument cluster electrical connections can become loose or have small amounts of corrosion in the connections to the cluster and other modules. This condition may require disconnecting the cluster and other modules and cleaning connections and adding some approved...

Q: Q: Knocking in my motor

Unless the engine overheated, the head gasket would not necessarily be damaged by running low on oil. Ticking type noises are usually associated with wear in the valve train. In some cases, low oil pressure will be the cause of...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.