DTC EFI-245

2-2-3 Idle air control valve opening, signal
2-4-5 Idle air control closing signal





Trouble Code Conditions
- Diagnostic trouble code (DTC) EFI-223/EFI-245 is stored if the engine control module (ECM) registers a fault in the cable from the idle air control (IAC) valve opening/closing coil.

Substitute value(s)
- Idle air trim disabled.
- Fuel shut-off conditions changed.
- Output signals to the coils are regulated with a fixed value. depending on the cause of the fault.
- Leakage diagnostic is turned off.

Possible source(s)
Signal too high:
- Short-circuit to supply voltage in the signal cable.
- Defective idle air control valve.

Signal too low:
- Opening and closing coil signal cables short-circuited to each other.
- Open-circuit in power cable.
- Short-circuit to ground in signal cable.
- Defective idle air control valve.
- Contact resistance in terminals.

Signal missing:
- Open-circuit in signal cable.
- Defective idle air control valve.
- Contact resistance in terminals.

Fault symptom(s)
- Idling speed low or high.