Will not fully seated Memory Clibration module always...

[-=Jeff=-]

Let's start from the beginning.. Tell us exactly how you are grabbing the codes.. Are you installing a jumper somewhere or?

[Schrade]

Yes - jumper into the sockets 'A' and 'G'...

[WVZR-1]

Originally Posted by XfireZ51

You don't read ECM codes on the speedo display. You read them by counting the flashes of the SES light on the DIC.

The OP is correct - Module 4 in the LCD display is ECM fault codes. You can't do "HISTORY" from the SES/CEL only a present code is flashed when requested.

OP - The H72 is a CCM code and most frequently accompanies a replacement of the radio head with something from the after-market. There's diode and resistor replacements that accomplish a patch for those. I would imagine there's many other issues that could set the 72.

In your original post you mention the H42 and that you cleared it. The H (HISTORY) is just a reference that it has been recorded and would remain until "cleared". Once cleared you won't see that HXX whatever it might be I wouldn't think until it were set again and then it would just be the CXX, C (CURRENT) code until the repair made and then would become HXX again in the module 4 diagnostics until cleared there again.

Any CXX codes in module 4 I would think should be actively displayed with the SES/CEL light "ON".

[-=Jeff=-]

for the SES to Flash I believe it is A & B that are jumpered

for the FX3 it is A & C

doing what you are doing is just like what WVZR-1 is saying, the H codes are history ones and not current

[Schrade]

Originally Posted by WVZR-1

The OP is correct - Module 4 in the LCD display is ECM fault codes. You can't do "HISTORY" from the SES/CEL only a present code is flashed when requested.

OP - The H72 is a CCM code and most frequently accompanies a replacement of the radio head with something from the after-market. There's diode and resistor replacements that accomplish a patch for those. I would imagine there's many other issues that could set the 72.

In your original post you mention the H42 and that you cleared it. The H (HISTORY) is just a reference that it has been recorded and would remain until "cleared". Once cleared you won't see that HXX whatever it might be I wouldn't think until it were set again and then it would just be the CXX, C (CURRENT) code until the repair made and then would become HXX again in the module 4 diagnostics until cleared there again.

Any CXX codes in module 4 I would think should be actively displayed with the SES/CEL light "ON".

Correct? REALLY ? I ain't used to that - except in my own castle of course.

Thanks there Dave - makes sense - I'm getting feedback still in the radio, in PERFECT sync with the TPS, and it's because of the TCI EZ-GO TCU for the auto. - speed shop is dragging their feet on that still.

The ECM 42 has not re-curred. Now it's an ECM H 61 - also attributable to the auto mod, I'm presuming...