3. Comparison table (connector No., usage, coordinate and paragraph No.)
CN No. Usage
Air solenoid valve (aux. brake)
Air solenoid valve (air horn)
Remote control pressure vent solenoid
Right slewing proportional reducing valve
Left slewing proportional reducing valve
Boom raising proportional reducing valve
Boom lowering proportional reducing valve
Boom retracting proportional reducing valve
CN141
Jib tilt lowering/boom extending selection
Jib tilt raising/boom retracting selection solenoid
Slewing free/lock selection solenoid
Slewing relief proportional reducing valve
Jib side up/down selection solenoid (mounting)
Jib side up/down selection solenoid (stowing)
Jib tilt/telescoping selection solenoid (1)
Jib tilt/telescoping selection solenoid (2)
Z-4 4.3 Z-12 2.
CN231
2nd-3rd boom section telescoping correction
CN260
Winch high-speed hoisting down selection
CN261
Winch high-speed hoisting down selection
Power window SW (outside cab)
Electric retractable mirror SW
CN476
High/Low selection SW,
Rear steering lock release SW
Outrigger (J/S selection) SW
Jib/telescoping selection SW
Slewing free/lock selection SW
Jib mounting/stowing selection SW
Outrigger (extension/retraction) SW
Harness
diagram
CN503
Emergency operation SW
(boom emergency telescoping)
Anti-two-block disable SW
CN506
4th-Top boom section extension SW
D-2
CN507
4th-Top boom section extension SW
Transmission selection SW (illumination)
Steering mode selection SW
Main wire rope length detection (phase A)
Main wire rope length detection (phase B)
Aux. wire rope length detection (phase A)
Aux. wire rope length detection (phase B)
Main winch hoisting up detection SW
Auxiliary winch hoisting up detection SW
Boom extending detection SW
Boom retracting detection SW
Boom raising detection SW
Boom lowering detection SW
Jib tilt raising detection SW
Jib tilt lowering detection SW
Right slewing detection SW
Left slewing detection SW
Main winch hoisting down detection SW
Auxiliary winch hoisting down detection SW
Boom full retraction detection SW
Jib full retraction detection SW
AML emergency SW (AML override)
Z-4 4.1 CN559
Winch high-speed hoisting down selection SW
Emergency two-blocking key (option)
Transmission selection SW (shift)
CN564
Emergency operation SW group
(emergency transmission,
emergency accelerator, DPF emergency cancel,
suspension emergency free)
Jib connection pin detection SW
Jib lock pin detection SW
Oil cooler (for local support)
Boom length and angle detector
CN577 Joint connector (jib length detection)
CN578 Joint connector (jib angle detection)
Pressure sensor (main pressure)
CN584
Pressure sensor
(elevating cylinder, boom raising)
CN585
Pressure sensor
(elevating cylinder, boom lowering)
CN694 Joint connector (jib) Z-4 4.5
Condenser (oil cooler (option))
CN806
Roof wiper motor, working lamp (on cab),
room lamp (door side), door switch
Two-blocking warning H-2
Z-4 4.1
For AML vent solenoid (emergency)
AML external indicator lamp (option)
“Electric circuit diagram” and “Harness diagram” show each
applicable paragraph No. of this manual’s contents.
Refer to the contents.