Feedback System
- Connect self-diagnosis checker to connector. See Figure
. Place select switch
in the "B" position. Disconnect neutral switch connector. Operate
engine at idle to normal operating temperature. Shut off engine. On
turbo models, remove intercooler. See Figure
.
- On all models, disconnect throttle sensor connector. See Fig 1
. On turbo models,
reinstall intercooler. On all models, start engine and allow to idle.
Self-diagnosis checker should read trouble code 06 with monitor light
on.
Courtesy of MAZDA MOTORS CORP.
- Increase engine speed to 1500-2000 RPM and note that monitor
light starts to flash within 10 seconds after increasing engine speed.
Trouble code 06 should be indicated with monitor light flashing more
than 8 times per 10 seconds.
- Maintain engine speed at 1750 RPM and disconnect oxygen sensor
connector. See Fig 1
.
Monitor light should be off and trouble code 05 should exist. Replace
ECU if any deviation from normal readings exists.