Skip the auto shop - Our mechanics make house calls

Q: Wired

asked by on

The two tone color wired is staying grounded which is the green & white wired

A: The wire goes to pin 8 of the ECM and to th...

The wire goes to pin 8 of the ECM and to the EVAP solenoid on one side and this side will ground the solenoid to control it. If the circuit is keeping the EVAP solenoid on all the time, then you need to disconnect the connector at the ECM and EVAP and see if it is still shorted to ground. If it is, then you need to trace the harness to see if it is chafed and grounded somewhere. If the wire is no longer grounded then you may have an ECM short.

Make sure you are using a digital multimeter to check for grounded circuit. You should also use a scanner to turn the EVAP solenoid on and off to see if the ECM is able to operate it.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Alarm goes off for no good reason. I have gotten the error hood is ajar.

Hello there, a few different faults will cause your 2007 Buick Lucerne's alarm to go off. If you are getting an error for a hood ajar than this is the cause of the alarm going off. The best method would...

Q: Check engine light not working.

If the check engine light is not coming on, then that is a good sign. If your dashboard before displayed the check engine light before and now it is not coming on, then the dashboard warning light could have burned...

Q: Hi, I'm in the process of purchasing a 2007 escalade

In evaluating the wisdom of buying a particular model of car (used or new), consult the database of the National Highway Traffic Safety Administration, NHTSA. The NHTSA database contains model specific consumer complaints, official recalls and factory service bulletins searchable...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...