Thread: P1457 code?
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Old 10-30-2004, 06:25 PM
HondaDriver82 HondaDriver82 is offline
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OK, I DID MORE TESTING, FOUND SOMETHING NEW.

Ok, I read the Helms manual again and I did the testing for the Purge Control Solenoid. I raised the front of the car onto jack stands and hooked up a vacuum gauage to the other side of the pcs (purge control solenoid). So know I have One side of the pcs hookd up to the IM and the other to the vacuum gauage. Ok the book says to warm up the engine until the fan comes on, OK did that!! Now put the car in first gear and rev it up to 3k rpm. Ok, Now there should be vacuum because the PCS is suppose to open. But I'm getting no vacuum. So I put 12v and ground to the solenoid and it clicked open and I did the test again now I am getting vacuum. So the only thing left to check is the wiring. I did a continuity test on the wires they are not OPEN OR SHORTED to the body. SO the wires are fine. I looked at the wireing diagram for the engine harness and I saw that the Blk/Yel wire that goes to the PCS is suppose to have 12v when the key is in or when the motor is started! That checks fine there is 12v. So If there is a Constant 12v already going to the valve that means the ecu throws a GROUND to open the valve RIGHT??? So I measure the voltage across the connector and it reads 12v. but when I plug the solenoid in it doesn't open. SO WHAT THE FUCK IS WRONG?

So we have:
-12v at the Blk/Yel
-Valve opens and close when 12v and ground is put to it
-wires are all good
-HHHHMMMMMMM, a problem!
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