Possible Causes
- Electrical Cause
- Mechanical Cause
- Control module cavity
- Circuit reference O_P_IOS4
- Monitor Description
- Open circuit detected by the ignition control module, then passed to the main CPU (Internal to the powertrain control module)
- The powertrain control module has determined an open circuit via lack of bias voltage, low current flow, no change in the state of an input in response to an output
- Ignition coil connector is disconnected, connector pin is backed out, connector pin corrosion
- Ignition coil fuse supply failure
- Ignition coil circuit open circuit