Supply voltage
â–¶ How to fix
Check the circuit for shorts and breaks. Check battery and connections.Check the voltage measurement between coordinator pins 49 and 26.Perform a charge test of the alternator.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
The supply voltage to the coordinator has been too low.The fault code is set if the voltage on coordinator pin 49 has fallen below 19 V.
Possible cause
Short circuit or open circuit in the coordinator supply voltage circuit. The fault code may also be due to incorrect batteries or alternator.