Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
I have a 2007 mazda 3 2.0 auto the relay intermittently does not always engage to let power to starter . I load tested battery which is fully charged then I tested voltage at relay and get 12.4 volts on both the battery terminal and the ignition terminal. Could I be losing ground to keep the relay from sending power to the starter. fyi starter works fine if you jump power to solenoid terminal and car will start most of time with the key
I think a good place to look without getting too intrusive is scan data.
Check for ignition switch position, park/neutral, start request and starter relay command.
If the request is seen and the command is not sent, then it's time to look toward inputs. If the command is sent and the starter doesn't operate, then it's time to do some circuit checks.
Topic Author
