Possible Causes
WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes are:
- Open circuit between throttle body 6-pin harness connector terminal "E" and PCM 30-pin harness connector terminal "4AB" (Blue/White wire)
- Open circuit between throttle body 6-pin harness connector terminal "F" (White/Green wire) and PCM 30-pin harness connector terminal "4Y" (Blue/Black wire)
- PCM malfunction
- Poor connection of throttle body or PCM harness connector
- Short circuit to ground between throttle body 6-pin harness connector terminal "E" and PCM 30-pin harness connector terminal "4AB" (Blue/White wire)
- Short to ground circuit between throttle body 6-pin harness connector terminal "F" (White/Green wire) and PCM 30-pin harness connector terminal "4Y" (Blue/Black wire)
- Throttle valve motor malfunction