Model 4700 Maintenance Manual

Section 8.Theory of Operation

All Dual Traction Motor Trucks and Single Traction Motor Trucks <S/N10677Pinout Matrix

257J40-15 CAN HCommunication line between the VM and optional HCB (J140-13). If option is not present, a jumper with terminating resistor is installed between J48-8 and J48-15.

258J40-16 AUX OUT 1+24V output from VM, through fuse F10, to the optional Travel Alarm (BZ1 at J70+). If not present, check VM, wiring, and connections. Note: Option must be enabled in FlashWare.

259J40-17 GND B– supply to VM. This B– is shared by many components prior to and after the VM. If not present, follow back towards B– until loss can be determined.

260J40-18 AUX IN 4Input to the VM from the optional Reverse Working lights switch (SW29 at J94). If not present, check switch, wiring, and connections.

261J40-19 AUX OUT 2+24V output from the VM, through fuse F11, to Warning light (LP5 at J97).

262J40-20 +24V AUX+24V input to VM from DC/DC converter (J96-4). If not present, check converter, wiring, and connections.

263J40-21 +24V AUX+24V input to VM from DC/DC converter (J96-4). If not present, check converter, wiring, and connections.

264J40-22 AUX OUT 3+24V output from the VM, through fuse F12, to Forward Left Work light (LP7 at J104).

265J40-23 AUX OUT 4+24V output, through fuse F13, to Reverse Working lights (LP8 at J106 and LP9 at J105).

266J41-1 VCC Supply voltage to the Lift pot (P3) from the VM (J40-7). If not present, check VM, wiring, and connections.

267J41-2 C POT

Wiper input from the Lift pot (P3) to VM (J40-11). Voltage will vary depending on lift request. The pot may need to be re-learned. If not present, check pot, wiring, and connections.

N/A VMHCB

+24V VMBZ1

Battery voltage wrt BT1+ B– at J1–VM

Approx. 5V open; 0V closed SW29VM

+24V VMLP5

+24V VMLP7

+24V VMLP8, LP9

Approx. 5VVMP3

P3VM

Publication 1160093, Issued: 20 May 2013 8-35

Section 8.Theory of Operation

Model 4700 Maintenance Manual

Pinout MatrixAll Dual Traction Motor Trucks and Single Traction Motor Trucks <S/N10677

268J41-3 N POT Negative reference for the Lift pot (P3) from the VM (J40-9). If this reference is lost or intermittent, the lift pot will not function correctly and possibly will throw codes. If not present, check VM, wiring, and connections.

Note: Check P3 by disconnecting it from the circuit and reading across it. Approx. 4K ohm should be read across J41-1 and 3.

269J42-1 GND One of the grounds supplied by the VM (J40-6) to Lift switch (SW11). If not present, check VM, wiring, and connections.

270J42-2 NOT USED

271J42-3 LIFTINGInput to VM (J40-1) from the Lift switch (SW11). If not present, check switch, wiring, and connections.

272J43-1 GND One of the grounds supplied by the VM (J40-6) to Tilt switch (SW12). If not present, check VM, wiring, and connections.

273J43-2 NOT USED

274J43-3 TILT Input to VM (J40-10) from the Tilt switch (SW12). If not present, check switch, wiring, and connections.

275J44-1 GND One of the grounds supplied by the VM (J40-6) to Sideshift switch (SW13). If not present, check VM, wiring, and connections.

276J44-2 NOT USED

277J44-3 SIDESHIFTInput to VM (J40-3) from the Sideshift switch (SW13). If not present, check switch, wiring, and connections.

278J45-1 GND One of the grounds supplied by the VM (J40-6) to 4th Function switch (SW14). If not present, check VM, wiring, and connections.

279J45-2 NOT USED

280J45-3 4th FUNCTIONInput to VM (J40-4) from the 4th Function switch (SW14). If not present, check switch, wiring, and connections.

Battery voltage wrt BT1+ VMP3

Battery voltage wrt BT1+ VMSW11

Approx. 5V open; 0V closed SW11VM

Battery voltage wrt BT1+ VMSW12

Approx. 5V open; 0V closed SW12VM

Battery voltage wrt BT1+ VMSW13

Approx. 5V open; 0V closed SW13VM

Battery voltage wrt BT1+ VMSW14

Approx. 5V open; 0V closed SW14VM

Publication 1160093, Issued: 20 May 2013