problems with HP tuners seeing VCM
06-28-2009, 11:31 AM
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problems with HP tuners seeing VCM Crossposted from hptuners forum as there's probably more traffic here and I currently have generice VCM issues:
I'm not noob to forums or computers, but damn I sure am an HPTuners noob.
Installed drivers. Got info from interface to see my 8 credits. Tried to connect and it can't see the VCM.
Vehicle is a conversion (LS6 in '01 Miata). I checked the hot at the OBDII port and it's good. I tried to plug a generic OBDII reader I have into the port and it's not seeing the VCM either. VCM is '04 GTO. There is a vanilla mail order tune on it.
On the '04 GTO VCM Blue connector,
19 - Ign voltage
20 - Batt
57 - Batt.
I tested 19 and get Ign+ with key on and 20 and 57 are indeed hot.
My battery is a bit low at 10.7 volts. Could this be the problem? I'm charging it now and tried the test with a charger hooked up, though it is a 12v 6a charger.
After it is charged, is there an output at the VCM to test with a volt meter to see if the PCM is doing anything when powered up?
Edit for more info.
Hooked up a real battery charger so I have voltage. Getting 5v at TPS sensor. Getting continuity at all grounds at VCM. No injector pulse when cranking.
Thanks,
Frank
I'm not noob to forums or computers, but damn I sure am an HPTuners noob.
Installed drivers. Got info from interface to see my 8 credits. Tried to connect and it can't see the VCM.
Vehicle is a conversion (LS6 in '01 Miata). I checked the hot at the OBDII port and it's good. I tried to plug a generic OBDII reader I have into the port and it's not seeing the VCM either. VCM is '04 GTO. There is a vanilla mail order tune on it.
On the '04 GTO VCM Blue connector,
19 - Ign voltage
20 - Batt
57 - Batt.
I tested 19 and get Ign+ with key on and 20 and 57 are indeed hot.
My battery is a bit low at 10.7 volts. Could this be the problem? I'm charging it now and tried the test with a charger hooked up, though it is a 12v 6a charger.
After it is charged, is there an output at the VCM to test with a volt meter to see if the PCM is doing anything when powered up?
Edit for more info.
Hooked up a real battery charger so I have voltage. Getting 5v at TPS sensor. Getting continuity at all grounds at VCM. No injector pulse when cranking.
Thanks,
Frank
