Skyjack SJKB-40-D - Page 71

SECTION 4, Page 20 SJKB-40-D, SJKB-40-D/FJUN. 1999
TROUBLESHOOTING (Cont.)
TROUBLE PROBABLE CAUSE REMEDY
ELECTRICAL SYSTEM (Cont.)
NO STEER LEFT
1. Defective left steer switch S12-3.
2. Loose or broken wire #24 from
drive/steer controller S12 to
platform terminal block TB2.
3. Loose or broken wire #24 from
Platform terminal block TB2 to
base terminal block TB3.
4. Loose or broken wire #24 from base
terminal block TB3 to relay 17CR1.
5. Defective relay 17CR1.
6. Loose or broken wire #24A from
relay 17CR1 to base terminal block
TB3.
7. Loose or broken wire #24A from
base terminal block TB3 to steer
left valve coil 4H-24A.
8. Defective steer left valve coil 4H-
24A.
9. Loose or broken wire #02 from
steer left valve coil 4H-24A to base
terminal block TB3.
10. Open diode D24.
1. Check switch. Replace if
defective.
2. Check Continuity. Replace if
defective.
3. Check Continuity. Replace if
defective.
4. Check Continuity. Replace if
defective.
5. Check Relay. Replace if
defective.
6. Check Continuity. Replace if
defective.
7. Check Continuity. Replace if
defective.
8. Check Continuity through coil.
Replace if defective.
9. Check Continuity. Replace if
defective.
10. Check Diode. Replace if
defective.
NO STEER RIGHT
1. Defective right steer switch S12-
2.
2. Loose or broken wire #23 from
drive/steer controller S12 to
platform terminal block TB2.
3. Loose or broken wire #23 from
Platform terminal block TB2 to
base terminal block TB3.
4. Loose or broken wire #23 from base
terminal block TB3 to relay 17CR2.
5. Defective relay 17CR2.
6. Loose or broken wire #23A from
relay 17CR2 to base terminal block
TB3.
7. Loose or broken wire #23A from
base terminal block TB3 to steer
right valve coil 4H-23A.
8. Defective steer right valve coil 4H-
23A.
9. Loose or broken wire #02 from
steer right valve coil 4H-24A to
base terminal block TB3.
10. Open diode D23.
1. Check switch. Replace if
defective.
2. Check Continuity. Replace if
defective.
3. Check Continuity. Replace if
defective.
4. Check Continuity. Replace if
defective.
5. Check Relay. Replace if
defective.
6. Check Continuity. Replace if
defective.
7. Check Continuity. Replace if
defective.
8. Check Continuity through coil.
Replace if defective.
9. Check Continuity. Replace if
defective.
10. Check Diode. Replace if
defective.