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Correction* Failed E2 motor wire at JST connector on extruder
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Description

On quiver prototype A1 I got a driver error print halt error that killed the print. Marlin version is 2.0.0.18. From the log it appears to have been a stall detect on the Y axis. Here is the console log of the error:

< [12:49:46] echo:Active Extruder: 0
< [12:49:48] X:100.00 Y:100.00 Z:20.17 E:0.00 Count X:10003 Y:10001 Z:10000
< [12:51:12] 
< [12:51:12] E1 driver error detected:
< [12:51:12] short to ground (coil B)
< [12:51:12] 		X	Y	Z	E	E1
< [12:51:12] Enabled		true	true	true	true	true
< [12:51:12] Set current	950	950	960	960	960
< [12:51:12] RMS current	923	923	923	923	923
< [12:51:12] MAX current	1301	1301	1301	1301	1301
< [12:51:12] Run current	17/31	17/31	17/31	17/31	17/31
< [12:51:12] Hold current	8/31	8/31	8/31	8/31	8/31
< [12:51:12] CS actual		17/31	17/31	17/31	17/31	8/31
< [12:51:12] PWM scale	0	0	57	51	0
< [12:51:12] vsense		0=.325	0=.325	0=.325	0=.325	0=.325
< [12:51:12] stealthChop	false	false	true	true	true
< [12:51:12] msteps		16	16	16	16	16
< [12:51:12] tstep		437	852	31063	4732	1048575
< [12:51:12] pwm
< [12:51:12] threshold		109	109	527	62	62
< [12:51:12] [mm/s]		72.53	72.53	3.00	30.36	30.36
< [12:51:12] OT prewarn	false	false	false	false	false
< [12:51:12] OT prewarn has
< [12:51:12] been triggered	false	false	false	false	false
< [12:51:12] off time		3	3	3	3	3
< [12:51:12] blank time	24	24	24	24	24
< [12:51:12] hysteresis
< [12:51:12] -end		2	2	2	2	2
< [12:51:12] -start		3	3	3	3	3
< [12:51:12] Stallguard thrs	6	5	0	0	0
< [12:51:12] DRVSTATUS	X	Y	Z	E	E1
< [12:51:12] stallguard			X			
< [12:51:12] sg_result		109	0	0	0	0
< [12:51:12] fsactive						
< [12:51:12] stst						X
< [12:51:12] olb				X		
< [12:51:12] ola						
< [12:51:12] s2gb						X
< [12:51:12] s2ga						
< [12:51:12] otpw						
< [12:51:12] ot						
< [12:51:12] Driver registers:
< [12:51:12] 	X	0x00:11:00:6D
< [12:51:12] 	Y	0x01:11:00:00
< [12:51:12] 	Z	0x40:11:00:00
< [12:51:12] 	E	0x00:11:00:00
< [12:51:12] 	E1	0x90:08:00:00
< [12:51:12] 
< [12:51:12] 
< [12:51:12] Error:Printer halted. kill() called!
< [12:51:16] Requesting temperature auto-update
< [12:51:22] Requesting temperature auto-update
< [12:51:44] Unexpected error while accessing serial port. (5, 'Input/output error')
< [12:51:44] Closing the USB printer connection.
< [12:51:49] Printer connection listen thread stopped for None
< [12:53:18] Closing the USB printer connection.

Event Timeline

Steven created this task.Nov 28 2018, 1:02 PM
Steven triaged this task as Normal priority.
Steven created this object with edit policy "LulzBot Hardware Products (Project)".
Steven reassigned this task from marcio to mjpelletier.Nov 28 2018, 1:42 PM
Steven added a subscriber: marcio.

Correction, looks like the actual error is:
< [12:51:12] E1 driver error detected:
< [12:51:12] short to ground (coil B)

Steven renamed this task from Stall guard false positive on Y axis to Correction* Failed E2 motor wire at JST connector on extruder.Nov 28 2018, 3:58 PM

We confirmed that the failure was caused by the pin in the JST connector that connects to the E2 stepper motor. The wires were cut and re-pinned, fixing the issue. These were originally hand cut and crimped for the prototypes so it could have been a bad crimp. Going to merge this into T4510 in case the issue reappears.