Skyjack SJ1044 TH - Electrical System; Engine will Not Crank

106
SJ1044 TH, SJ1044 THS, SJ1056 TH, SJ1056 THS, SJ1256 THS
230790ABA
Section 4 – Troubleshooting Information Electrical System
4.2 Electrical System
4.2-1 Engine Will Not Crank
NOTE
Park brake switch must be on and transmission
lever must be in neutral
1. Battery cables loose/disconnected Tighten or connect battery cables
2. Battery Discharged or Defective Charge battery or replace if defective
3. Loose or broken wire #54 from 94 pin ECU
connector (D2.2), pin90 to relay 56ACR
Check continuity. Replace if defective.
4. Loose or broken wire #03 to fuse F26. Check continuity. Replace if defective.
5. Fuse F26 open Check for defective wiring. Replace fuse
6. Loose or broken wire #56 from F26 to relay
56ACR.
Check continuity. Replace if defective.
7. Loose or broken wire #56A from relay 56ACR to
94 pin ECU connector, pin 26.
Check continuity. Replace if defective.
8. Loose or broken wire #56B from relay 56ACR to
fuel pump.
Check continuity. Replace if defective.
9. Defective relay 56ACR.
Check continuity through contacts of relay.
Replace if defective.
10. Loose or broken ground wire #00 from fuel pump
to battery B-.
Check continuity. Replace if defective.
11. Defective Fuel Pump Replace if defective
12. Loose or broken B+ wire from battery B+ to ECU
fuse F25
Check continuity. Replace if defective.
13. ECU 30A fuse F25 open
Check for defective wiring. Replace/repair if
defective. Replace fuse.
14. Loose or broken wire #K01 from ECU fuse F25 to
94 pin ECU connector 3 places pins 1, 3, and 5.
Check continuity. Replace if defective.
15. Loose or broken ground wire #00 from battery B-
to 94 pin ECU connector 3 places pins 2, 4, and 6.
Check continuity. Replace if defective.
16. Loose or broken 03 wire from B+ to fuse F1 Check continuity. Replace if defective.
17. fuse F1 open
Check for defective wiring. Replace/repair if
defective. Replace fuse.
18. Loose or broken 03A wire from fuse F1 to ignition
switch SW1
Check continuity. Replace if defective.