Electrical System; All Controls Are Inoperative From The Base Or Platform Console - Skyjack SJ40 T+ Service Manual

Section 4 – Troubleshooting Information

4.2 Electrical System

4.2-1 All Controls are Inoperative from the Base or Platform Console

NOTE
Functions may be disabled by the dual load zone system or the overload system. Please first
make sure the boom is at or below level and fully retracted, the platform is level and free of added
weight, and there are no faults in the dual load or overload systems.
1. Battery cables loose/disconnected
2. Battery Discharged or Defective
3. Loose or broken B+ cable from batteries to
battery disconnect switch S1
4. Open or defective battery disconnect switch S1
5. Loose or broken wire #03 from battery
disconnect switch S1 to circuit breaker CB1
6. Circuit breaker CB1 tripped or defective.
7. Loose or broken wire #05 from circuit breaker
CB1 to base emergency stop switch S3.
8. Open or defective base emergency stop switch
S3.
9. Loose or broken wire #07 from base emergency
stop switch S3 to base key switch S2.
10. Loose or broken #07A wires between base key
switch S2 terminals
11. Open or defective key select switch S2
12. Loose or broken wire #04A from base terminal
block to relay 04ACR.
13. Loose or broken wire #07 from base emergency
stop switch S3 to relay 04ACR.
14. Loose or broken wire #02 from relay 04ACR to
base terminal block.
15. Defective relay 04ACR.
16. Loose or broken wire #09 from relay 04ACR to
base terminal block.
17. Loose or broken wire #09 from base terminal
block to base control module connector J1 pins
1, 2, 3, and/or 4.
238273AAA
88
Tighten or connect battery cables
Charge battery or replace if defective
Check continuity. Replace if defective.
Close switch. Replace if defective
Check continuity. Replace if defective
Reset breaker, check for defective wiring. Replace
if defective.
Check continuity. Replace if defective.
Close switch. Replace if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Close switch. Replace if defective
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check relay. Replace if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Electrical System
SJ40 T+, SJ45 T+