AccuGrade® Laser (CB420) Caterpillar

Diagnostic Code List

Usage:

120H ALZ

Display Fault Messages

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Table 1
Diagnostic Codes For The AccuGrade - Grade Control System ⁽¹⁾
Diagnostic Code	Description
CB 1	Set Limits Fault
CB 2	Lost Beam, Check Setup
CB 3	Calibration Failure, Check Setup
CB 4	Calibration Failure, Check Valve Hardware
CB 5	Calibration Failure, Restart
CB 6	Wrong Blade Motion, Check Valve Hardware
CB 7	Calibration Failure, Restart
CB 8	No Blade Movement, Check Valve Hardware
CB 9	Calibration Failure, Restart
CB 10	Set Limits Fault, Restart
CB 11	Low Voltage, Service
CB 12	System Hours Lost, Continue
CB 13	Valve Calibration Lost, Recalibrate
CB 14	Memory Error, Recalibrate Valves
CB 15	Memory Fault, Service
CB 16	Linked Mode Sensor Missing, Check EM and LR Connections
CB 17	CAN Network Failure, Service
CB 18	CAN Network Failure, Service
CB 19	CAN Network Failure, Service
CB 20	CAN Controller Hardware Error, Check
CB 21	Remote AM Swith Failure, Service
CB 22	VM Missing, Service
CB 23	Unsupported Device, Cycle Power
CB 24	Duplicate Left/Right Device, Service
CB 25	Elevation Limit Left, Check Bench Setup
CB 26	Elevation Limit Right, Check Bench Setup
CB 27	Internal Fault, Cycle Power
CB 28	Invalid Serial Number, Service
CB 29	VM Intermittant, Check Connection
CB 30	Duplicate Sensor Serial Number, Service
CB 31	Recalibrate Linked Mode Elevation
CB 32	ECM Disconnected, Service
CB 33	VM Failure, Service
CB 34	VM Failure, Service
CB 35	VM Fault, Service
CB 36	Left Laser Receiver Missing
CB 37	Align Rotation, Restart
CB 38	Angle sensor hardware failure, Service
CB 39	Rotation sensor hardware failure, Service
CB 40	Laser receiver hardware failure, Service
CB 41	Control Latency, Cycle Power
CB 42	Control Latency, Cycle Power
CB 43	Laser Interference, Check Laser Setup
CB 44	Laser Interference, Check Laser Setup
CB 45	ST Not Found, Check Connection
CB 46	Slope ratio out of limits
CB 47	Sensor Missing, Check Harness Connections
CB 48	Invalid Password
CB 49	Password Expired
CB 50	Serial Number Fault, Service
CB 52	Sensor not Supported, Reconfigure
CB 54	<- Slope Limit, Continue
CB 55	Slope Limit ->. Continue
CB 56	Reference Target Not Found, Service
CB 57	Password Expired
CB 61	Service Agreement Expired
CB 62	VM Fault, Service
CB 63	Calibration Fault, Check Setup

Laser Receiver Fault Messages

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Table 2
Diagnostic Codes For The AccuGrade - Grade Control System ⁽¹⁾
Diagnostic Code	Description
LR 0	Communication Fault, Service
LR 1	Memory Fault, Service
LR 2	Memory Fault, Service
LR 3	Serial Number Format Fault, Service
LR 4	Serial Number Format Fault, Service
LR 5	Serial Number Format Fault, Service
LR 20	End of Travel, Check Setup
LR 21	Check Connection
LR 148	Elevation Limit, Check Bench Setup

Electric Mast Fault Messages

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Table 3
Diagnostic Codes For The AccuGrade - Grade Control System ⁽¹⁾
Diagnostic Code	Description
EM 1	Internal Failure, Service
EM 2	Limit Switch Failure, Service
EM 15	Motor/Encoder Fault, Service
EM 21	Elevation Fault, Verify Bench
EM 23	Memory Fault, Service
EM 24	Memory Fault, Service
EM 25	Memory Fault, Service
EM 26	Memory Fault, Service
EM 29	Internal Fault, Service
EM 30	Motor/Encoder Fault, Service
EM 31	Memory Fault, Service
EM 32	Check Connection, Check Harness Connection

Angle Sensor / Rotation Sensor Fault Messages

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Table 4
Diagnostic Codes For The AccuGrade - Grade Control System ⁽¹⁾
Diagnostic Code	Description
AS 1	Memory Fault, Continue
AS 2	Memory Fault, Service
AS 3	Serial Number Fault, Service
AS 4	Serial Number Fault, Service
AS 5	Serial Number Fault, Service
AS 6	Flash Program Fault, Retry

Sonic Tracer Fault Messages

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Table 5
Diagnostic Codes For The AccuGrade - Grade Control System ⁽¹⁾
Diagnostic Code	Description
ST 1	Memory Fault, Continue
ST 2	Memory Fault, Service
ST 3	Serial Number Fault, Service
ST 4	Serial Number Fault, Service
ST 5	Serial Number Fault, Service
ST 6	Flash Program Fault, Retry
ST 7	End of Travel
ST 8	Fuction Instance Fault, Service

Implement and Valve Control ECM MID 114 Diagnostic Codes

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Table 6
Diagnostic Codes For The AccuGrade - Grade Control System ⁽¹⁾
CID - FMI	CID-FMI Description
1396 - 03	Implement Solenoid Protection Relay Voltage Above Normal
1396 - 05	Implement Solenoid Protection Relay Open Circtuit
1396 - 06	Implement Solenoid Protection Relay Current Above Normal
2160 - 03	Blade Left Raise Solenoid Voltage Above Normal
2160 - 05	Blade Left Raise Solenoid Open Circuit
2160 - 06	Blade Left Raise Solenoid Current Above Normal
2161 - 03	Blade Right Raise Solenoid Voltage Above Normal
2161 - 05	Blade Right Raise Solenoid Open Circuit
2161 - 06	Blade Right Raise Solenoid Current Above Normal
2162 - 03	Blade Left Lower Solenoid Voltage Above Normal
2162 - 05	Blade Left Lower Solenoid Open Circuit
2162 - 06	Blade Left Lower Solenoid Current Above Normal
2163 - 03	Blade Right Lower Solenoid
2163 - 05	Blade Right Lower Solenoid Open Circuit
2163 - 06	Blade Right Lower Solenoid Current Above Normal
2258 - 03	Left Blade Control Mode Switch Open or Voltage Above Normal
2258 - 04	Left Blade Control Mode Switch Current Above Normal
2258 - 07	Left Blade Control Mode Switch Stuck In Position
2259 - 03	Right Blade Control Mode Switch Open or Voltage Above Normal
2259 - 04	Right Blade Control Mode Switch Current Above Normal
2259 - 07	Right Blade Control Mode Switch Stuck In Position
2261 - 02	Left Desire Grade Offset Switch Data Erratic
2261 - 03	Left Desire Grade Offset Switch Voltage Above Normal
2261 - 04	Left Desire Grade Offset Switch Current Above Normal
2261 - 07	Left Desire Grade Offset Switch Stuck In Position
2262 - 02	Right Desire Grade Offset Switch Data Erratic
2262 - 03	Right Desire Grade Offset Switch Voltage Above Normal
2262 - 04	Right Desire Grade Offset Switch Current Above Normal
2262 - 07	Right Desire Grade Offset Switch Stuck In Position
2291 - 03	AccuGrade Fault Indicator Voltage Above Normal
2291 - 05	AccuGrade Fault Indicator Open Circuit
2291 - 06	AccuGrade Fault Indicator Current Above Normal