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PKRWUD · 09-17-2001, 09:37 PM

Code 33 means you should check your vacuum lines near the egr valve.

Code 85 is rather easy. There are only three possibilities:
Faulty CANP solenoid
Open in harness circuit
Shorted harness circuit (power to ground)

Do this:
Turn key on. Turn key off. Wait 10 seconds. Set DMM to the 200 ohm scale. Disconnect CANP solenoid connector and measure CANP solenoid resistance. If it's not between 40 and 90 ohms, replace the solenoid. If it is between 40 and 90 ohms, set your DMM to the 20 volt scale, and turn the key on. Measure the voltage between the red wire in the CANP connector and the batteries negative post. If the voltage is below 10.5 volts, repair the open in that circuit. If the voltage is at or above 10.5 volts, turn the key off, and disconnect the connector from the ECM. Set your DMM to the 200 ohm scale, and measure the resistance between the Gray/Yellow wire at the CANP connector and the Gray /Yellow wire at the ECM 60 pin connector. If the resistance is greater than 5 ohms, there is a problem with that gray/yellow wire. If the resistance is 5 ohms or less, set the DMM to the 200k ohms scale, and measure the resistance between the two terminals in the CANP solenoid harness. Make sure the ECM and the solenoid are still disconnected. If the reading is 10k ohms or more, replace the ECM. If the resistance is less than 10k ohms, repair short to power. Reinstall everything and perform a KOEO and a KOER, and see if the code reoccurs.

Take care
~Chris

------------------
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09-17-2001, 09:37 PM	#2
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Code 33 means you should check your vacuum lines near the egr valve. Code 85 is rather easy. There are only three possibilities: Faulty CANP solenoid Open in harness circuit Shorted harness circuit (power to ground) Do this: Turn key on. Turn key off. Wait 10 seconds. Set DMM to the 200 ohm scale. Disconnect CANP solenoid connector and measure CANP solenoid resistance. If it's not between 40 and 90 ohms, replace the solenoid. If it is between 40 and 90 ohms, set your DMM to the 20 volt scale, and turn the key on. Measure the voltage between the red wire in the CANP connector and the batteries negative post. If the voltage is below 10.5 volts, repair the open in that circuit. If the voltage is at or above 10.5 volts, turn the key off, and disconnect the connector from the ECM. Set your DMM to the 200 ohm scale, and measure the resistance between the Gray/Yellow wire at the CANP connector and the Gray /Yellow wire at the ECM 60 pin connector. If the resistance is greater than 5 ohms, there is a problem with that gray/yellow wire. If the resistance is 5 ohms or less, set the DMM to the 200k ohms scale, and measure the resistance between the two terminals in the CANP solenoid harness. Make sure the ECM and the solenoid are still disconnected. If the reading is 10k ohms or more, replace the ECM. If the resistance is less than 10k ohms, repair short to power. Reinstall everything and perform a KOEO and a KOER, and see if the code reoccurs. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!