QuestionHey RolandThe code reader has a 16 pin plug, and yes, it has its own battery for power source, and YES to it being the only way the scanner was connected to the vehicle – there was no additional connectors. Brian did test the 12v last pin you mentioned and it is testing fine. He then tested the ground pin number 4 you mentioned, but could only test one side showing juice coming to it – he has not been able to test other end or see where it goes – he said something to the effect of having to take off a plastic panel to investigate that further?When Brian tested pin number 3, he mentioned that it has a very low voltage – doesn’t know the exact number of volts, but assumes that would be normal as you stated it would be included in the non-ground area of the pins.The ground on Pin number 5 you mentioned traced and tested fine.
SOOOOO to recap - here is where we stand on those questions you asked for on 'current status' restated:
Here GOES>>>>>
1) Does the starter motor crank? ANSWER TO THIS IS YES
2) If so, does the engine start? ANSWER TO THIS IS NO
3) When you first turn the key to the run position (but not to start) do you hear the fuel pump run for a second and then does it stop? ANSWER TO THIS IS YES
4) ASD relay will open? ANSWER TO THIS IS YES
5) IF code reader is plugged in - CAR STARTS RIGHT UP STILL - UNPLUG CODE READER, IT WILL CRANK BUT WILL NOT START UP.
6) The random clicking of the two relays (ASD and ETAX) ANSWER TO THIS IS YES ONLY IF ATTEMPT IS MADE TO START CAR WITHOUT CODE READER PLUGGED IN.
7) The ignition switch has been replaced and the area that was spliced has been repaired – (although he is still at a loss why this was done previously-- yellow wire that goes to solenoid ?? He says was connected improperly/cut from a previous install of an ignition switch 6 yrs ago) ANYWAY, he states that everything that the ignition switch is supposed to control tests out and works fine now….
8)The PTC (now clarified by your “PPS” resent message, as the positive temperature controller device ) fuse in dashboard panel was finally searched and found via your clarification but it tests hot on both sides. He says there was a plastic clip that he removed and showed smaller wires that looked clean, clear and tested fine on both ends.
9) FINALLY, THE ‘SELF DIAGNOSIS’ process you outlined earlier - WILL NOT GIVE ANY CODES EITHER – HE HAS USED THE INSTRUCTIONS YOU GAVE TO ACTIVATE THIS – DID IT BY THE HAYNES MANUAL AS WELL – BUT WHEN IN THAT MODE – THERE ARE NO CODES GIVEN OUT WHILE IN THAT MODE – panel lights indicate it is in the proper mode – but no codes showing…..
I DO NOT KNOW HOW TO REACH YOU ANY OTHER WAY - I TRIED A FOLLOW UP QUESTION AND A NEW QUESTION BUT IT WONT LET ME???
THANK YOU THANK YOU THANK YOU FOR STICKING WITH US THROUGH THIS - IF I CANT GET THIS RESOLVED, I CANT GET TO WORK -- IF I CANT GET TO WORK I CANT GET MONEY TO DONATE TO THIS SITE OR PAY MY MECHANIC!! OR YOU for that matter!!
Yours kindly,
Morgan
AnswerPins 3 and 11 of the plug should show +/- 2.5v compared to chassis ground. Pins 4 and 5 should each show dead shorts to chassis ground. Pins 6, 7, and 14 are digital lines also so no noticeable voltage or ground measurement. Pin 16 should show 12V.
Let me know if anything unusual shows.
Roland
Hi Morgan,
I wonder if the problem might be related to the grounding of the pcm and tcm units being flaky. That experience of clicking relays would be explained by that theory as would possibly the role of the diagnostic reader in correcting the no start situation. I believe I mentioned the ground question earlier but didn't give a suggestion as to what to check at the pcm and tcm in the vehicle. The wires at pins 10 and 50 of the pcm plug and pins 53 and 57 of the tcm plug are supposed to be grounded to the battery - clamp via the thinnest of the three black wires on that clamp. There is a single splice in the harness located just in front of the left side strut tower where those 4 module ground wires are spliced to the other end of the thinnest wire connected to the - battery clamp. If that splice, or the thinnest black wire connection were faulty that would shut down the tcm and pcm. The code reader also plugs into that ground wire (pin 5 of its plug) and also to another wire (on pin 4) that is grounded instead to the body. So it is possible that the reader is providing an alternative ground bridging pathway (pin 5 to pin 4) for your pcm and tcm which is why it would run when the reader is plugged in but otherwise not. It may be a 'reach' but give it a try.
Roland
