Possible Causes
WARNING: This page is about a different car, the 2003 Infiniti FX45. However, it is still accessible from the selected car via links, so may be relevant.
Malfunction is detected when:
- ECM calculation function is malfunctioning.
- ECM EEP-ROM system is malfunctioning.
- ECM self shut-off system is malfunctioning.
Only possible cause is a faulty ECM. When malfunction "A" is detected, ECM will enter fail-safe mode, ECM stops electric throttle control actuation, and throttle valve is fixed at about 5 degrees by the return spring. ECM also deactivates ASCD operation.