Trouble Code Access

Using jumper wire, ground Green 1-pin connector. Connector is located at left front wheelwell. See Fig 1.
NOTE: On Federal MPVs, the CHECK engine warning light will come on every 80,000 miles to indicate oxygen sensor service is needed. To reset the light refer to MAINTENANCE REMINDER LIGHT RESET PROCEDURES .

Fig 1: Green 1-Pin Test Connector
Courtesy of MAZDA MOTORS CORP.
With ignition on and engine stopped, observe "CHECK ENGINE" or MIL light. Note trouble codes. Check TROUBLE CODE IDENTIFICATION chart for possible cause. If light remains on continuously, MIL circuit is grounded or ECU is defective.