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 in White wire between main relay and VTCS solenoid valve 2-pin harness connector terminal "A"
- Open circuit in Blue/Orange wire between VTCS solenoid valve harness connector terminal "B" and PCM 30-pin harness connector terminal "4T"
- PCM malfunction
- Poor connection of connectors at PCM and/or VTCS control solenoid valve
- Short circuit to ground in Blue/Orange wire between VTCS solenoid valve harness connector terminal "B" and PCM 30-pin harness connector terminal "4T"
- VTCS solenoid valve malfunction