CARRIER-PLANETARY 9G9303 - Caterpillar

Illustration 1 g06045316
Left Side of Machine
(1) Engine ECM relayEngine ECM relay (1) is located below the main fuse modules on the left side of the engine compartment. The engine compartment cover provides access to the relay.When the engine start switch is in the ON position, engine ECM relay (1) is energized. When the relay is energized, power transfers from the relay to engine ECM "A" fuse and engine ECM "B" fuse. This relay also provides power to fuses that are part of the engine aftertreatment system.Note: For more information on the engine and the aftertreatment system, refer to the "Engine" section of this document.
Illustration 2 g06045323
Operator Platform
(2) Fuse block
(3) Fuse block
(4) Fuse block
(5) Machine ECM fuse
(6) Engine ECM fuse "B"
(7) Engine ECM fuse "A"
(8) Controls fuse
(9) Backup alarm fuse
(10) Backup alarm relayFuses and relays that are part of the propel system are contained in three fuse blocks. The panel that houses fuse block (2), (3), and (4) is on the operator platform behind the seat. A cover plate must be removed to access the fuse blocks. Additional plastic cover (shown removed) protects the fuses.The following fuses in fuse block (2) provide power to components in the propel electrical circuit:Machine ECM fuse (5) at fuse position "F13" provides power to the "B+" terminals of the machine ECM. The fuse is rated at 10 amp.The engine ECM fuse "B" (6) at fuse position "F15" provides power to the engine ECM. The fuse is rated at 20 amp.The engine ECM fuse "A" (7) at fuse position "F17" provides power to the engine ECM. The fuse is rated at 5 amp.Controls fuse (8) at fuse position "F1" provides power to the following components:
The operator display
The B+ terminal of the fault alarm
The keypad
The propel lever
The parking brake switchControls fuse (8) is rated at 10 amp.The following fuse in fuse block (3) and relay in fuse block (4) provide power to components in the propel electrical circuit:Backup alarm fuse (9) at fuse position "F3" provides power to the coil of backup alarm relay (10). The fuse is rated at 10 amp.
Illustration 3 g06045324
Operator Platform
(11) Machine ECMMachine ECM (11) is on the operator platform behind the seat. A cover plate must be removed to access the ECM.Machine ECM (11) controls the following propel functions:
Engine speed (rpm)
Pump displacements
Acceleration and deceleration rate limit
Parking brake control
Uncommanded motion detection
Load control
Overspeed protection
Automatic speed control
Auxiliary functions (back-up alarm)
Illustration 4 g06045325
Rear of Machine
(12) Engine ECMEngine ECM (12) is located in the engine compartment at the rear of the machine. The engine compartment cover provides access to the ECM.Engine ECM (12) controls engine functions for the machine. The engine ECM also performs intermediary and secondary functions for propel commands. Propel-related functions performed by the engine ECM include the following:
Engine control of desired rpm from the machine ECM
Engine rpm feedback from the engine to the machine ECM
Illustration 5 g06045326
Operator Platform
(13) Brake pedal position sensorBrake pedal position sensor (13) is at the base of the brake pedal on the right side of the operator platform.The brake pedal is used to