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Equipment-and-Tool-Institute / j1939-84

J1939-84 implementation for etools.org
MIT License
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DM29 Erasure Detected yet the query matches the expected standard #1258

Closed ericthomasswenson closed 4 months ago

ericthomasswenson commented 1 year ago

The queried data is

08:01:22.4946 Destination Specific DM29 Request to Engine #1 (0) 08:01:22.4984 18EA00F9 [3] 00 9E 00 (TX) 08:01:22.5276 189EF900 [8] 00 00 00 00 00 FF FF FF DM29 from Engine #1 (0): Emission-Related Pending DTC Count 0 All Pending DTC Count 0 Emission-Related MIL-On DTC Count 0 Emission-Related Previously MIL-On DTC Count 0 Emission-Related Permanent DTC Count 0 FAIL: 6.12.10.2.b - Engine #1 (0) erased DM29 data // This is the expected state when there are no faults // and matches the prior query data earlier in part 12 test 5. // SPN 629 FMI 22 is detected but its count doesn’t belong here.
// One active DTC count shows up in the next query.

The standard should be

Start Test 12.5 - DM29: Regulated DTC Counts 08:01:08.8510 Global DM29 Request 08:01:08.8541 18EAFFF9 [3] 00 9E 00 (TX) 08:01:08.8876 189EFF00 [8] 00 00 00 00 00 FF FF FF DM29 from Engine #1 (0): Emission-Related Pending DTC Count 0 All Pending DTC Count 0 Emission-Related MIL-On DTC Count 0 Emission-Related Previously MIL-On DTC Count 0 Emission-Related Permanent DTC Count 0

End Test 12.5 - DM29: Regulated DTC Counts

ericthomasswenson commented 1 year ago

Start Test 11.4 - DM29: Regulated DTC counts 07:47:08.4613 Global DM29 Request 07:47:08.4646 18EAFFF9 [3] 00 9E 00 (TX) 07:47:09.2116 Timeout - No Response FAIL: 6.11.4.2.b - No ECU reported > 0 for permanent DTC // Global DM29 timed out … was generally reliable before.

End Test 11.4 - DM29: Regulated DTC counts

battjt commented 1 year ago

Not reproducible.

July 23, 2023 "When the fault was implanted in the PIM instead of the engine...The DM29 erasure complaint didn’t recur."