BL Touch won't deploy

[mm]

I'm having trouble with a new install of a genuine BL touch (3.1) on a Duet2 Wifi (3.4 firmware) not deploying. It deploys and retracts for its test on bootup. I have wiring just as in the Duet3d documentation using the same commands for the Heater3 pin. I had FSR setup before, but could never get the 3 sensors to trigger dependably. The FSR lines are commented out in config.g. This is on a delta printer. I'm not sure what it could be and would appreciate some help if possible.

I added my config.g file below.

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.3 on Sat Jul 04 2020 23:30:05 GMT-0500 (Central Daylight Time)

; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"printer1" ; set printer name
;M665 R130 L269.8 B130 H356.081 ; Set delta radius, diagonal rod length, printable radius and homed height
M665 R130 L340.5 B140 H247.65 ; Longer CF arms from Rostock 340.5mm
M666 X0 Y0 Z0 ; put your endstop adjustments here, or let auto calibration find them

; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet

; Drives
M569 P0 S0 ; physical drive 0 goes forwards //mm changed from s1 to s0 to reverse
M569 P1 S0 ; physical drive 1 goes forwards // mm changed from s1 to s0 to reverse
M569 P2 S0 ; physical drive 2 goes forwards // mm changed from s1 to s0 to reverse
M569 P3 S0 ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z80.00 E663.00 ; set steps per mm
M566 X1200.00 Y1200.00 Z1200.00 E1200.00 ; set maximum instantaneous speed changes (mm/min)
M203 X18000.00 Y18000.00 Z18000.00 E1200.00 ; set maximum speeds (mm/min)
M201 X1000.00 Y1000.00 Z1000.00 E1000.00 ; set accelerations (mm/s^2)
M906 X1000 Y1000 Z1000 E800 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 Z0 S1 ; set minimum Z

; Endstops
M574 X2 S1 P"!xstop" ; configure active-high endstop for high end on X via pin xstop // mm had to invert !
M574 Y2 S1 P"!ystop" ; configure active-high endstop for high end on Y via pin ystop //mm had to invert !
M574 Z2 S1 P"!zstop" ; configure active-high endstop for high end on Z via pin zstop //mm had to invert !

; Z-Probe BL-Touch
M950 S0 C"exp.heater3" ; GPIO/Servo pin index
M558 P9 C"^zprobe.in" H5 F120 T6000 ; Specify probe type 9 and the input pin
G31 X0 Y0 Z0 ; Nozzle to probe offset

; Z-Probe FSR
;M558 P5 C"e0stop" I1 H5 F120 T6000 ; set Z probe type to switch and the dive height + speeds
;M558 H30 ;*** Remove this line after delta calibration has been done and new delta parameters have been saved
;G31 P500 X0 Y0 Z-.46 ; set Z probe trigger value, offset and trigger height
;M557 R85 S20 ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B1 S1.00 ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00 ; disable bang-bang mode for heater and set PWM limit

; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on

; Use config-override.g
M501

; Tools
M563 P0 D0 H1 F0 ; define tool 0
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

; Custom settings are not defined

; Miscellaneous ; mm added troubleshooting no tool specified for feed 5mm macro
T0

[Phaedrux]

What do you have in your deployprobe.g and retractprobe.g files?

How have you tested the pin deploy?

What happens when you send M401 and M402?

What happens when you send G30?

Are you absolutely sure you're connected to heater pin 3 on the expansion header? Have you tried heater pin 7?

[mm]

Thanks @phaedrux.

It appears to be working now. Before my M401 M402 weren't working either. I believe was on heater 3, used two 4 pin connectors (picture attached).

I changed the yellow wire to heater7 and changed the number on the one line of code, and M401 and M402 work as expected. Sending G30 the probe now deploys and the effector starts its descent. Now I can work on finishing the setup.

Thanks again!