Model 4700 Maintenance Manual

Section 8.Theory of Operation

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

233J37-1 GND Ground to Speed Reduction switch (PB2) from the VM (J34-6). If not present, check VM, wiring, and connections.

234J37-2 NOT USED

235J37-3 SP. RED. (TURTLE) Provides input to VM (J34-29) from the Speed Reduction switch (PB2). If not present, check switch, wiring, and connections.

236J39-1 GND Ground to Forward Hand Direction switch (SW9) from the VM (J34-6). If not present, check VM, wiring, and connections.

237J39-2 GND Ground to Reverse Hand Direction switch (SW10) from the VM (J34-6). If not present, check VM, wiring, and connections.

238J39-3 and 4NOT USED

239J39-5 FW Provides input to VM (J34-30) from Forward Hand Direction switch (SW9). If not present, check switch, wiring, and connections.

240J39-6 NOT USED

241J39-7 BW Provides input to VM (J34-19) from Reverse Hand Direction switch (SW10). If not present, check switch, wiring, and connections.

242J39-8 NOT USED

243J40-1 LIFTINGInput to VM from Lifting switch (SW11 at J42-3). If not present, check switch, wiring, and connections.

244J40-2 FAN DRIVEOutput from the VM to the Power Amp Fan (FN1 at J71-3). If not present, check VM, wiring, and connections. Should be present within a minute of turning Key switch ON.

245J40-3 SIDESHIFTInput to VM from Sideshift switch (SW13 at J44-3). If not present, check switch, wiring, and connections.

246J40-4 4TH Input to VM from 4th Function switch (SW14 at J45-3). If not present, check switch, wiring, and connections.

Battery voltage wrt BT1+

VMPB2

Approx. 0V when PB2 closed; approx. 5V open

Battery voltage wrt BT1+

Battery voltage wrt BT1+

PB2VM

VMSW9

VMSW10

Approx. 5V switch open; 0V switch closed

SW9VM

Approx. 5V switch open; 0V switch closed

SW10VM

Approx. 5V open; 0V closed SW11VM

Approx. 5V ON; 0V OFF VMFN1

Approx. 5V open; 0V closed SW13VM

Approx. 5V open; 0V closed

Publication 1160093, Issued: 20 May 2013 8-33

Section 8.Theory of Operation

Model 4700 Maintenance Manual

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

247J40-5 NOT USED

248J40-6 GND One of the grounds supplied by the VM to multiple components. If ground is not present at this connection check for B– coming into the VM at (J34-7, 8, 10) and (J40-17).

249J40-7 VCC Supply voltage to the Lift pot (P3 at J41-1) from the VM. If not present, check VM, wiring, and connections.

250J40-8 CAN L Communication line between the VM and optional HCB (J140-4). If option is not present, a jumper with terminating resistor is installed between J48-8 and J48-15.

251J40-9 N POT Negative reference for the Lift pot (P3 at J41-3). 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.

252J40-10 TILT Input to VM from Tilt switch (SW12 at J43-3). If not present, check switch, wiring, and connections.

253J40-11 C POT Wiper input from the Lift pot (P3 at J41-2). Voltage will vary depending on lift request. The pot may need to be re-learned. If not present, check pot, wiring, and connections.

254J40-12 AUX IN 3Input to VM from the optional Forward Working Lights switch (SW28 at J99). If not present, check switch, wiring, and connections.

255J40-13 AUX IN 1Input to VM from the Lowering switch (SW15 at J47-3). If not present, check switch, wiring, and connections.

256J40-14 AUX IN 2Input to VM from J95 (jumper). If not present, check wiring and connections.

Battery voltage wrt BT1+

VMSW11 thru 15

Approx. 5VVMP3

N/A VMHCB

Battery voltage wrt BT1+ VMP3

Approx. 5V open; 0V closed

Approx. 2.5V in neutral; approx. 5V w/full lift requested

SW12VM

P3VM

Approx. 5V open; 0V closed VMSW28

Approx. 5V open; 0V closed

SW15VM

Approx. 5V open; 0V closed VMVM

Publication 1160093, Issued: 20 May 2013