Circuit/System Verification
- If DTCs P0685, P0689, or P0690 are set, diagnose those DTCs first.
- Ignition ON, engine OFF, observe both the Ignition 1 Voltage signal and the EC Ignition Relay Feedback signal parameters on the scan tool. Both parameter values should display no more than 3 volts difference between the 2 parameters.
- Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
IMPORTANT:
On the scan tool, the powertrain relay is referred to as the EC ignition relay.