Autotap won't connect?
Thread Starter
Launching!
Joined: Dec 2001
Posts: 259
Likes: 1
From: Durham, NC
Autotap won't connect? I have yet to get a proper OBD2 connector, so I am using some tiny female connectors to connect power, ground and the green wire to the ATAP male OBD connector. I have the pinouts for the Data Link Connector (DLC) from the manual as:
Pin2: Data, DkGrn (1040)
Pin4: ground (chassis ground)
Pin5: PCM ground (451)
Pin16: 12v+ (fused)
Pin1 is far left top (connector is wider at the top), pin 16 is directly below that. So I have then switched them left to right on the ATAP connector (since it would normally plug into these pins): ie, looking directly at the atap connector, narrow side down, I have 12v+ going to the far right bottom pin, DkGrn going to the 2nd pin from the right on the top, and the 2 grounds going to the middle top pins.
I also tried adding the "other" data line (orange/blk wire) - that didn't help.
I cannot get either Autotap or EFILive to connect. This is frustrating because the SES light is on. I've let the motor run a few times. It hesitates on throttle blip and one time it started surging and then died.
Do I have these pinouts correct? I guess tomorrow I will double verify that my DkGrn comes from pin58 of the blue PCM connector. Also, I have that 451 PCM ground going to chassis ground. So, I'm not sure why you need the 2 separate grounds for the DLC. Also, the ATAP connector LED stays off. Tried connecting while the engine was running and also with ignition On, not running.
Pin2: Data, DkGrn (1040)
Pin4: ground (chassis ground)
Pin5: PCM ground (451)
Pin16: 12v+ (fused)
Pin1 is far left top (connector is wider at the top), pin 16 is directly below that. So I have then switched them left to right on the ATAP connector (since it would normally plug into these pins): ie, looking directly at the atap connector, narrow side down, I have 12v+ going to the far right bottom pin, DkGrn going to the 2nd pin from the right on the top, and the 2 grounds going to the middle top pins.
I also tried adding the "other" data line (orange/blk wire) - that didn't help.
I cannot get either Autotap or EFILive to connect. This is frustrating because the SES light is on. I've let the motor run a few times. It hesitates on throttle blip and one time it started surging and then died.
Do I have these pinouts correct? I guess tomorrow I will double verify that my DkGrn comes from pin58 of the blue PCM connector. Also, I have that 451 PCM ground going to chassis ground. So, I'm not sure why you need the 2 separate grounds for the DLC. Also, the ATAP connector LED stays off. Tried connecting while the engine was running and also with ignition On, not running.
Thread Starter
Launching!
Joined: Dec 2001
Posts: 259
Likes: 1
From: Durham, NC
Re: Autotap won't connect? Well, turns out I did have the wrong wire. I had mixed up the FPR and the Data wire (both DkGrn <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> ). So, now the wires are definitely correct. And when I put my Ohm meter across the green wire and ground, I see a pretty interesting variation between 170 and 220 - some kind of signal there.
BUT, still no autotap. I filled out the form online for support. This sucks.
BUT, still no autotap. I filled out the form online for support. This sucks.
Thread Starter
Launching!
Joined: Dec 2001
Posts: 259
Likes: 1
From: Durham, NC
Re: Autotap won't connect? Okay, so I finally got access to another car and the ATAP connects to it just fine. So, it's a problem with my setup. On the other car, the light on the ATAP box turns on as soon as it's plugged in. On my car, it does not???
I dunno - this seems pretty simple - only 4 wires.
I dunno - this seems pretty simple - only 4 wires.
