Model 4700 Maintenance Manual

Section 8.Theory of Operation

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

13JCM-1 LOW Voltage from the HCB to turn on the Lowering Solenoid (EVP1). If not present, check the HCB, wiring, and connections.

14JCM-2 +V

Voltage from the HCB to the Lowering (EVP1) and Lifting (EV2) Solenoids. If not present, check the HCB, wiring, and connections. Note: This voltage is common to both solenoids. If this voltage is lost, neither solenoid will work.

15JCM-3 LIFT Voltage from the HCB to turn on the Lifting Solenoid (EV2). If not present, check the HCB, wiring, and connections.

16JCM-4 TILT FWVoltage from the HCB to turn on the Tilt Forward Solenoid (EV3). If not present, check the HCB, wiring, and connections.

17JCM-5 +V

Voltage from the HCB to the Tilt Forward (EV3) and Tilt Backward (EV4) Solenoids. If not present, check the HCB, wiring, and connections.

Note: This voltage is common to both solenoids. If this voltage is lost, neither solenoid will work.

18JCM-6 TILT BWVoltage from the HCB to turn on the Tilt Backward Solenoid (EV4). If not present, check the HCB, wiring, and connections.

19JCM-7 L SIDESHIFTVoltage from the HCB to turn on the Left Sideshift Solenoid (EV5). If not present, check the HCB, wiring, and connections.

20JCM-8 +V

Voltage from the HCB to the Left (EV5) and Right (EV6) Sideshift Solenoids. If not present, check the HCB, wiring, and connections. Note: This voltage is common to both solenoids. If this voltage is lost, neither solenoid will work.

Approx. 2-12V wrt B+ (approx. 18ohms across coil)

HCBEVP1

HCBEV2, EVP1

21JCM-9 thru 11NOT USED

22JCM-124th FUNCTIONVoltage from the HCB to turn on the 4th Function Solenoid (EV7). If not present, check the HCB, wiring, and connections.

Lifting: Approx. 24V wrt B+ (approx. 27ohms across coil)

Approx. 15V wrt B+ (approx. 18ohms across coil)

B+

HCBEV2

HCBEV3

Approx. 15V wrt B+ (approx. 18ohms across coil)

Approx. 18V wrt

B+ (approx. 22ohms across coil)

HCBEV3, EV4

Approx. 18V wrt

B+ (approx. 22ohms across coil)

HCBEV4

HCBEV5

HCBEV7

Publication 1160093, Issued: 20 May 2013 8-15

Section 8.Theory of Operation

Model 4700 Maintenance Manual

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

23JCM-13+V Voltage from the HCB to the 4th Function (EV7 and EV8) Solenoids. If not present, check the HCB, wiring, and connections. Note: This voltage is common to both solenoids. If this voltage is lost, neither solenoid will work.

24JCM-144th FUNCTIONVoltage from the HCB to turn on the 4th Function Solenoid (EV8). If not present, check the HCB, wiring, and connections.

25JCM-15R SIDESHIFTVoltage from the HCB to turn on the Right Sideshift Solenoid (EV6). If not present, check the HCB, wiring, and connections.

26JCM-16 thru 18NOT USED

27JCM-19DRAIN Voltage from the HCB to turn on the Drain Solenoid (EVP). If not present, check the HCB, wiring, and connections.

Approx. 18V wrt B+ (approx. 22ohms across coil)

Approx. 18V wrt B+ (approx. 22ohms across coil)

Approx. 2 to 13V wrt B+ when requesting lift and/or any aux function. (approx. 18 ohms across coil)

HCBEV8

HCBEV6

28JCM-20+V Voltage from the HCB to the Drain Solenoid (EVP). If not present, check the HCB, wiring, and connections.

29JCM-21 and 22NOT USED

30JCM-23GND B– supply to optional HCB. 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.

HCBEVP

Battery voltage wrt BT1+ B– at J1–HCB

PPATPA, PPA 32JCP-2 NOT USED 33JCP-3 CAN HCommunication between the PPA and the TPA (JAT-7).

31JCP-1 CAN L Communication between the PPA and the TPA (JAT-4).

34JCP-4 NOT USED

35JCT-1 +12V +12V to the Right Traction Motor (RTM) encoder (EN1). If not present, check the TPA, wiring, and connections.

36JCT-2 GND Ground to the Right Traction Motor (RTM) encoder (EN1). If not present, check the TPA, wiring, and connections.

Battery voltage wrt BT1+

Publication 1160093, Issued: 20 May 2013