Retrieving Codes

Using jumper wire, ground Green 1-pin connector. Connector is located at front of left front fender, near battery. See Fig 1 .

Fig 1: Grounding Green 1-Pin 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 table for possible cause. If light remains on continuously, MIL circuit is grounded or ECU is defective.