Re: CA18 Low AFM signal voltage = limp mode ?
Posted: Fri Oct 18, 2013 12:27 pm
I've found on the bench that lowering voltage below 1V does not increase TP or injection time. This means there is no low AFM volt enrich. There is something else going on
Some notes to post here from my email:
Some notes to post here from my email:
Monitor TP and injection time when AFM voltage changes. I do not see them increase on under < 1 volt on 36F05 CA18DET ROM image which means there is no limp values being used from what I can see on the benchCA18DET specific:
Confirmed first cell value in VQ map is not used by ECU (has no effect on TP/injection time)
TTP min specifies the minimum TP value which the ECU will use at the specified RPM. TTPmin =
144 – 154 => lowest TP = 2304 (idx = 9)
128 – 143 => lowest TP = 2048 (idx =
112 – 127 => lowest TP = 1792 (idx = 7)
96 – 111 => lowest TP = 1536 (idx = 6)
80 – 95 => lowest TP = 1280 (idx = 5)
16 x TP index value = TTP min value required.
