Code C553, CRT Keep Alive Memory Error (TORONADO)

Code C553 does not necessarily indicate a fault, but is a normal occurrence anytime power to the CRTC has been interrupted. This code could set if the system voltage drops to less than 8 volts at CRT terminal "A7". Possible causes for this are the following:

• Faulty charging system.
• Faulty starter system.
• Extreme cold weather.
• Jump starting vehicle.