DTC 71 - Internal SDM Fault: Description

DTC 71 is and indication of a potential internal SDM malfunction and will set if any of the following conditions are detected:

• 36 VLR voltage out of normal operating range.
• Crash data recording reserved voltage discharge time failure for three consecutive ignition cycles.
• The calculated checksum for internal memory does not match the stored value.
• The voltage measured at "Driver Side Low" and/or "Passenger Side Low" is too high.
• The sensing device inside the SDM which converts vehicle velocity changes to an electrical signal is malfunctioning.
• The driver current source and/or passenger current source is malfunctioning.
• The temporary memory storage area is malfunctioning.
• SDM is unable to read from or write to EEPROM.
• The arming sensor inside the SDM is not closed during a deployment event.
• DTC 25 has been set.