Central Control Unit Diagnostic Trouble Codes

Central Control Unit (CCU) Diagnostic Trouble Codes

Diagnostic Trouble Code

Display

Solution

CCU 38.3

Fuel Level System

Secondary fuel sender voltage high.

CCU 38.4

Fuel Level Low

Secondary fuel sender voltage low.

CCU 96.3

Fuel Level System

Fuel level sensor circuit voltage high.

CCU 96.4

Fuel Level System

Fuel level sensor circuit voltage low.

CCU 96.17

Fuel Level Low

Refuel.

CCU 237.2

Identification System

Vehicle identification numbers do not match between control units.

CCU 237.14

Identification System

Vehicle identification fault.

CCU 237.31

Identification System

Vehicle identification fault.

CCU 567.5

Differential lock system

Differential lock circuit fault.

CCU 569.5

Differential Lock System

Differential lock solenoid circuit fault.

CCU 630.14

Rear PTO System

PTO calibration fault.

CCU 1079.3

Electrical system

Chassis control unit supply voltage high. Restart engine to attempt vehicle recovery.

CCU 1079.4

Electrical system

Chassis control unit supply voltage low. Restart engine to attempt vehicle recovery.

CCU 1086.3

Air Brake System

Pressure sensor voltage high.

CCU 1086.4

Air Brake System

Pressure sensor voltage low.

CCU 1086.18

Air Brake Pressure Low

Insufficient pressure to deactivate brakes. Allow pressure to increase. Bleed moisture from system.

CCU 1638.0

Hydraulic Oil Temperature High

Temperature extremely high. Reduce load. Check cooling system for debris.

CCU 1638.3

Hydraulic System

Hydraulic oil temperature sensor circuit voltage high. Restart engine to attempt vehicle recovery.

CCU 1638.4

Hydraulic System

Hydraulic oil temperature sensor circuit voltage low. Restart engine to attempt vehicle recovery.

CCU 1638.16

Hydraulic Oil Temperature High

Check cooling system for debris. Check hydraulic oil level.

CCU 1713.0

Hydraulic Oil Filter Restricted

Replace hydraulic filters.

CCU 1883.1

Rear PTO System

Shaft underspeed. Check engine speed. Cycle PTO switch to attempt vehicle recovery.

CCU 1883.13

Rear PTO System

Calibration fault.

CCU 1883.0

Rear PTO Speed High

Shaft speed high. Check engine RPM.

CCU 2392.5

Backup alarm system

Backup alarm circuit fault.

CCU 2602.2

Hydraulic System

Oil level sensor circuit fault.

CCU 2602.18

Hydraulic oil level low

Check oil level.

CCU 2602.1

Hydraulic oil level low

Check oil level.

CCU 523916.0

Hydraulic oil filter bypassed

Replace hydraulic filters.

CCU 522260.2

Wheel Speed

Speed sensor fault.

CCU 523749.16

Rear PTO System

Clutch temperature high due to PTO overload. Allow PTO clutch to cool for 15 seconds before attempting re-engagement.

CCU 523916.15

Hydraulic oil filter restricted

Replace hydraulic filters.

CCU 523916.16

Hydraulic oil filter bypassed

Replace hydraulic filters.

CCU 524251.31

Rear PTO on

Operator out of seat. Return to seated position.

CCU 524255.31

Remote PTO Enabled

Rear PTO external control switch active.

CCU 522384.14

Rear PTO System

Rear PTO cannot be engaged. Reduce ground speed.

CCU 523698.9

Implement Mgmt System

Greenstar display communication fault. Check connection.

CCU 523851.2

Implement Mgmt System

Sequence aborted due to SCV control unit communication fault.

CCU 523916.3

Hydraulic oil filter system

Filter restriction sensor circuit voltage high.

CCU 523916.4

Hydraulic oil filter system

Filter restriction sensor circuit voltage low.

CCU 524016.4

Electrical system

Chassis control unit supply voltage low. Reduce electrical load or increase engine RPM to attempt vehicle recovery.

CCU 524223.3

Differential lock system

Differential lock switch circuit voltage high.

CCU 524224.2

Rear PTO System

Rear PTO Switch fault.

CCU 524224.14

PTO Switch

Rear PTO disabled with switch on. Cycle PTO switch to attempt vehicle recovery.

CCU 524235.5

MFWD System

MFWD solenoid circuit fault.

CCU 524236.31

MFWD Switch

iTEC function cancelled. MFWD switch fault. Cycle MFWD control.

CCU 524252.5

Rear PTO System

PTO solenoid circuit fault.

CCU 600006.31

Electrical System

Vehicle controls not operating correctly.

OURX935,000064C-19-20090130