Tech Definition of ALDL Engine Parameters?

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Major7
Posts: 2
Joined: Mon Jun 20, 2022 7:51 am

Tech Definition of ALDL Engine Parameters?

Post by Major7 »

Is there a good place to get a technical overview of the parameter names that come back from an ALDL message? There's some stuff I found on BLM, but a lot of these parameters seem hard to get definitions for.

Most interested in:

0 PE DELAY TIME COMPLETE FLAG
1 1 = VATS FREQUENCY TEST PASSED
7 DELIVER ASYNCH. PULSE FLAG
5 1=HIGH MAT CONDITIONS OBSERVED
6 FIRST GOOD M42A FLAG
7 LOCK-IN MALF 42A 1=LOCKED IN
4 DE FLAG 1=DE IS ACTIVE
5 PE FLAG 1=PE IS ACTIVE
6 AE FLAG 1=AE IS ACTIVE
2 IAC COIL A
3 IAC COIL B
4 IAC ENABLE 1=ENABLE

33 PPSWVLT BATTERY VOLTAGE FROM PPSW A/D COUNTS
34 NTRPMX RPM VARIABLE USED FOR TABLE F1 EXTENSION LOGIC

45 SAREFFNL FINAL VALUE OF SAREF(MSB)
46 SAREFFNL FINAL VALUE OF SAREF(LSB)
47 PA2OLD ECU PA2 COUNTER VALUE FROM LAST MINOR LOOP(MSB)
N = COUNTS
48 PA2OLD+1 ECU PA2 COUNTER VALUE FROM LAST MINOR LOOP(LSB) NOT USED
49 INT CLOSED LOOP INTEGRATOR VALUE
N = INTEGRATOR COUNTS
50 DESTPS DESIRED GOVERNING TPS VALUE TO BE OUTPUT

51 ALDLCNTR ALDL RICH/LEAN CHANGE COUNTER

57 BPW BASE PULSE WIDTH(MSB)
58 BPW+1 BASE PULSE WIDTH(LSB)
mSEC = N/65.536
62 PURGEDC PURGE DUTY CYCLE VALUE
63 MATDEGA NON DEFAULTED MAT
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