CAN data bus, instrumentation – incorrect signal
Engine coolant blower motor, speed 1 – open circuit/short to ground
Injector 4 – current circuit
Injector 3 – current circuit
Injector 2 – current circuit
Injector 1 – current circuit
Injector – mechanical fault
Injector, activation – current circuit
Injector, activation – short to positive
Engine coolant blower motor, speed 2 – short to ground
