Model 4700 Maintenance Manual

Single Traction Motor Trucks >S/N 10676

132J34-7 GND B– supply to the 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.

133J34-8 GND B– supply to the 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.

134J34-9 HORN OUTOutput from the VM to activate the Horn (HR1 at J11-IN). If not present, check VM, horn push button, and wiring.

135J34-10 GND B– supply to the 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.

136J34-11 +24V +24V input to VM from DC/DC converter (J96-4). If not present, check converter, wiring and connections.

137J34-12 +24V CAN+24V output from the VM to Armrest Board (J139-5) and Operator Display (J137-5). If not present, check VM, wiring, and connections.

138J34-13 BRAKE LIGHT+24V output from VM to the Brake Lights (LP1 and LP3) when traveling and changing direction or traveling and pressing brake pedal. If not present, check VM, wiring, and connections.

139J34-14 PARK

Input to the VM from Parking Brake switch (SW7 at J30-3). If not present, check switch, wiring, and connections.

140J34-15 BRAKE Input to the VM from the Brake Pedal switch (SW6 at J31-2). If not present, check switch, wiring, and connections.

141J34-16 HORN INInput to VM from Horn switch (PB4 at J8-2). If not present, check horn switch, wiring, and connections.

142J34-17 OIL BRAKEInput to VM from Low Brake Fluid Sensor (SW3). If not present, check switch, wiring, and connections.

Publication 1160093, Issued: 20 May 2013

Section 8.Theory of Operation

Pinout Matrix

Battery voltage wrt BT1+ B– at J1–VM

Battery voltage wrt BT1+ B– at J1–VM

+24V; 0V activated VMHR1

Battery voltage wrt BT1+ B– at J1–VM

+24V DC/DC Converter VM

+24V VMArmrest Board, OD

+24V VMBrake Lights

Approx. 5V brake set; 0V brake released

Approx. 5V pedal not depressed; approx. 0V pedal depressed

SW7VM

SW6VM

Approx. 5V open; 0V switch closed PB4VM

Approx. 5V open; 0V switch closed SW3VM

Section 8.Theory of Operation

Pinout

Model 4700 Maintenance Manual

Matrix Single Traction Motor Trucks >S/N 10676

143J34-18 /BW Input to VM from Reverse Foot Pedal switch (SW5 at J33-9). If not present, check switch, wiring, and connections. ( Dual Pedal System)

144J34-19 BW Input to VM from Reverse Hand Direction switch (SW10 at J39-7) or Reverse Foot Pedal switch (SW5 at J33-8). If not present, check switches, wiring, and connections.

145J34-20 /FW Input to VM from Forward Foot Pedal switch (SW4 at J33-3). If not present, check switch, wiring, and connections. ( Dual Pedal System)

146J34-21 CAN L Communication line between VM, Operator Display (J137-1), and CAN-Bus Interface (J132-2).

147J34-22 CAN L Communication line between VM and Armrest Board (J131-1).

148J34-23 CAN L Communication line between VM and TPA (JCT-1)

149J34-24 +24V +24V input to VM from DC/DC converter (J96-4). If not present, check converter, wiring, and connections.

150J34-25 CONFIGInput to the VM to identify the type of directional controls on the truck (standard Hand Direction Lever or optional Dual Pedal System). If truck has the standard Hand Direction Lever, the input will be high. If the truck has the optional Dual Pedal System, the input will be low.

151J34-26

PUMP.TEMP.SWInput to VM from PM temperature switch (TS2 at J13-6). When the switch opens, an error code is displayed. If not present, check TS2, associated wiring, and connections.

Approx. 0V open; approx. 5V switch closed

Approx. 5V switch open; approx. 0V switch closed

Approx. 0V switch open; approx. 5V switch closed

SW5VM

SW5, SW10 VM

152J34-27

TR.TEMP.SWInput to VM from TM temperature switch (TS1 at J15-6). When the switch opens, an error code is displayed. If not present, check TS1, associated wiring, and connections.

153J34-28 L P H

Input to the VM from the LPH switch (PB3 at J36-2). If not present, check switch, wiring, and connections.

N/A

VM, TPAVM, TPA

+24V DC/DC Converter VM

Approx. 5V w/Hand Direction Lever; Approx. 0V w/Dual Pedal System

J33-5VM

Approx. 0V when OK; approx. 5V when open (overheated)

Approx. 0V when OK; approx. 5V overtemp

Approx. 0V when PB3 closed; approx. 5V open

TS2VM

TS1VM

PB3VM

Publication 1160093, Issued: 20 May 2013