NO START, "VREF" OUTPUT GROUNDED
Applicable Models
| Model |
Starting S/N |
Ending S/N |
| 1999 PROTEGE |
00000000 |
ZZZZZZZZ |
| 2000 PROTEGE |
00000000 |
ZZZZZZZZ |
| 2001 PROTEGE |
00000000 |
ZZZZZZZZ |
| 2002 PROTEGE |
00000000 |
ZZZZZZZZ |
| 1993 RX-7 |
00000000 |
ZZZZZZZZ |
| 1994 RX-7 |
00000000 |
ZZZZZZZZ |
| 1995 RX-7 |
00000000 |
ZZZZZZZZ |
| 1998 626 |
00000000 |
ZZZZZZZZ |
| 1999 626 |
00000000 |
ZZZZZZZZ |
| 2000 626 |
00000000 |
ZZZZZZZZ |
| 2001 626 |
00000000 |
ZZZZZZZZ |
| 2002 626 |
00000000 |
ZZZZZZZZ |
| 2000 MPV |
00000000 |
ZZZZZZZZ |
| 2001 MPV |
00000000 |
ZZZZZZZZ |
| 2002 MPV |
00000000 |
ZZZZZZZZ |
| 1999 MIATA |
00000000 |
ZZZZZZZZ |
| 2000 MIATA |
00000000 |
ZZZZZZZZ |
| 2001 MIATA |
00000000 |
ZZZZZZZZ |
| 2002 MIATA |
00000000 |
ZZZZZZZZ |
| 1995 MILLENIA |
00000000 |
ZZZZZZZZ |
| 1996 MILLENIA |
00000000 |
ZZZZZZZZ |
| 1997 MILLENIA |
00000000 |
ZZZZZZZZ |
| 1998 MILLENIA |
00000000 |
ZZZZZZZZ |
| 1999 MILLENIA |
00000000 |
ZZZZZZZZ |
| 2000 MILLENIA |
00000000 |
ZZZZZZZZ |
| 2001 MILLENIA |
00000000 |
ZZZZZZZZ |
| 2002 MILLENIA |
00000000 |
ZZZZZZZZ |
0001018 Dealer Repair Information
If the vehicle has no spark and no injector operation, the EGI Control
unit (PCM) may have a low or zero voltage "VREF" signal to run the
sensors. This voltage is created in the Control unit (PCM) and feeds
several sensors.
If the VREF voltage is lower than 5 volts, monitor it while
disconnecting the sensors that "share" this output voltage. If any are
shorted to ground they will lower the voltage to all the others in this
circuit.
A "grounded" VREF circuit will shut EGI control unit operation down and
prevent the engine from starting. This trouble will not blow a fuse or
set codes.
Copyright © Mazda North American Operations