Anyone have diagrams of the ECM and TCM pinouts for a 2005 LLY? I am trying to diagnose a couple of codes...wanting to check continuity from the VSS and the accelerator pedal to the ECM and/or TCM.
LLY ECM and TCM pinouts
- Thread starter thunder550
- Start date
Thanks guys.
Mike, that looks like it has what I need for the ECM. I didn't see the TCM pinouts in there though.
Mike, that looks like it has what I need for the ECM. I didn't see the TCM pinouts in there though.
Question. In the red tcm connector pin 31. Back probing I'm only getting 11.64 volts with KOEO. Bat voltage is 12.18 in the clr connector pin 3. Do you know if the "12 Volt reference" on pin 31 in the red connector has to be at or above 12 volt KOEO or is that 12 volt KOER?
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References voltages (like the 5V reference supplied to 3 wire sensors) are supposed to be regulated to almost that exact voltage by the ECM. I would check with the engine running and see what voltage you get vs just key on. A battery voltage of 12.18 is a low battery, about 50-60% charged. Put it on the charger.
Yeah i put the charge on it. I thought it should be closer to 12v Got a serial 2 com issue. Still tracing.
Narrowed it down to the entire trk
What a headache.
Good thing im strong willed or thick headed. Haven't put a label on it yet.
C20 hasnt been on the forum in 7 years, so you arent going to find what youre looking for from him. Look at post #3 for the link to gmupfitter and go from there.