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The DC Motor Controllers have a digital microcontroller, which runs through diagnostics during power up. If an error is detected, then the controller outputs an error code. The error code is displayed through an LED(s). This LED(s) is integrated on the user interface or throttle interface. When an error is detected, the LED(s) will flash the first number of the code, and pause for approx. 1 second. Then flash the second number of the code, and pause for approx. 4-5 seconds before repeating the error code.
CS1155 Error Code Example
Example 2-1 of error code on a CS1155

Error Codes Problem Possible Causes
1-1
 Brake Short Shorted brake, Loose/broken connection to brake, DC motor controller
1-2
 Brake Open Brake shorted to case, Missing/open brake, Loose/broken connection to brake, DC motor controller
1-3
 Quick Stop Quick Stop has been enabled
1-4
 Deadband Start Error The throttle was engaged during vehicle power up. Make sure the throttle is disengaged
2-1
 Motor Short Bad motor, Loose/broken connection to motor, DC motor controller
2-2
 Motor Open Bad motor, Loose/broken connection to motor, Brake manually released, DC motor controller
2-3
 Power Relay Short Defective batteries, DC motor controller
2-4
 PSL Motor Short PSL motor, Loose/broken connection to PSL motor, DC motor controller
2-5
 ACC Motor Short (ACCESSORY) (Only applies to CS1126) Bad ACC motor, Loose/broken connection to ACC motor, DC motor controller
2-6
 ACC Motor Open (ACCESSORY) (Only applies to CS1126) Bad ACC motor, Loose/broken connection to ACC motor, DC motor controller
4-1
 Over Voltage Condition During Charge The battery voltage was too high during charge. Check the battery charger for problems.
4-2
 Charge Mode Time Out Bad charger cable, Bad batteries, Bad charger, DC motor controller
4-3
 Charger Over Temperature Condition The charger overheated during the charge cycle(Valid for CS1204 Charger only). Check the battery and charger for problems.
5-1
 Component Failure An internal component on the CS1108 has failed.
5-2
 Component Failure An internal component on the CS1108 has failed.
5-3
 Throttle Failband Throttle control pot is off center/open, Loose/broken connection/cable, User interface, DC motor controller
5-4
 Steering Failband (Only applies to CS1126) Loose/broken connection/cable, User interface, DC motor controller
5-5
 Component Failure An internal component on the CS1108 has failed.
5-6
 Component Failure An internal component on the CS1108 has failed.
5-7
 Component Failure An internal component on the CS1108 has failed.
5-8
 Component Failure An internal component on the CS1108 has failed.
5-9
 Component Failure An internal component on the CS1108 has failed.
5-10
 Component Failure An internal component on the CS1108 has failed.
6-1
 Bad Software Revision The software revision of the programmer is the wrong version for the software in the controller.
6-2
 Component Failure An internal component on the CS1108 has failed.
6-3
 Component Failure An internal component on the CS1108 has failed.