Possible Causes
WARNING: This page is about a different car, the 2002 Mazda B4000, 2002 Mazda B3000, and 2002 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes are:
- PSP switch/shorting bar damaged.
- SIG RTN circuit open or shorted to GND.
- PSP circuit open or shorted to SIG RTN.
- PCM damaged.