Skyjack SJ30AJE - 38 Brake will Not Release; 39 No Drive and Steer; 40 No Forward Drive

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SJ30AJE, SJ30ARJE196274AF
Section 4 – Troubleshooting Information Electrical System
4.2-38 Brake will not Release
1. Loose or broken wire #48+ (yellow wire) from
main contactor 3CCR to grey plug pin #1 at left
and right drive motors.
Check continuity. Replace if defective.
2. Loose or broken blue wire from grey plug pin
#2 at left drive motor to left motor controller pin
#LM4.
Check continuity. Replace if defective.
3. Loose or broken blue wire from grey plug pin #2
at right drive motor to right motor controller pin
#RM4.
Check continuity. Replace if defective.
4.2-39 No Drive and Steer
NOTE
MEWP will not drive or steer if it is tilted and off limit switches.
1. Loose or broken wire #04 from platform terminal
block to drive joystick A1.
Check continuity. Replace if defective.
2. Loose or broken wire #02 from platform terminal
block to drive joystick A1.
Check continuity. Replace if defective.
4.2-40 No Forward Drive
1. No output on “D” when forward is selected on
drive joystick A1.
See drive joystick test procedure in section 5.
2. Loose or broken wire ”D-signal” from drive
joystick A1 to plug A pin #24 in platform control
console.
Check continuity. Replace if defective.
3. Loose or broken wire “D” in cable A or its
connectors.
Check for continuity between pins #24 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
4. Loose or broken wire “D” from base plug A pin
#24 to motor control harness A.
Check continuity. Replace if defective.
5. Loose or broken wire “D” from motor control
harness A to right motor controller pin #RM15.
Check continuity. Replace if defective.