166
SJ63 AJ+, SJ63 AJ229043AAA
Section 4 – Troubleshooting Information Electrical System - CE & AS
4.3-48 Brake will not Release
1. No output on pin #10 from valve driver to wire
#26 when operating a drive function.
Check pin #10 for 12 volts. If no voltage present
with foot on footswitch check section 5 for valve
driver test procedure.
2. Loose or broken wire #26 from valve drive
pin #10 to plug A pin #11 in platform control
console.
Check continuity. Replace if defective.
3. Loose or broken wire #26 in Cable A or its
connectors.
Check for continuity between pins #11 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
4. Loose or broken wire #26 from base plug A pin
#11 to main harness plug pin #6.
Check continuity. Replace if defective.
5. Loose or broken wire #26 or #02 from main
harness plug to brake valve 3H-26.
Check continuity. Replace if defective.
6. Defective brake valve coil 3H-26. Check continuity and resistance through coil.
Replace if defective.
4.3-49 Differential Lock will not Engage
NOTE
Differential Lock cannot be engaged if a drive function has been selected.
1. No output on pin #19 from valve driver to wire
#26A.
Check pin #19 for 12 volts when drive in neutral
position. If no voltage present make sure drive
joystick output “D” is between 4.2 and 4.8 volts.
2. Loose or broken wire #26A from valve drive pin
#19 to differential lock switch S28.
Check continuity. Replace if defective.
3. Loose or broken wire #165 from differential lock
switch S28 to plug A pin #24 in platform control
console.
Check continuity. Replace if defective.
4. Loose or broken wire #165 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.
5. Loose or broken wire #165 from base plug A pin
#24 to main harness plug pin #21.
Check continuity. Replace if defective.
6. Loose or broken wire #165 or #02 from main
harness plug to differential lock valve 3H-165.
Check continuity. Replace if defective.
7. Defective differential lock valve coil 3H-165. Check continuity and resistance through coil.
Replace if defective.
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