Code 71 - Internal DERM Fault: Description

Code 71 is an internal Diagnostic Energy Reserve Module (DERM) fault and will set if any of these conditions are detected:

• DERM power supply reserve voltage charge or discharge time fails.
• DERM power supply reserve voltage is less than 13 volts or greater than 19.6 volts for 500 milliseconds.
• DERM is unable to read from or write to Electrically Erasable Programmable Read Only Memory (EEPROM).
• 36VLR is greater than 44 volts for 500 milliseconds.