MPV 2WD V6-3.0L SOHC (1992)
Data Link Connector: Description and Operation
Grounding Test Connector Pin
^ The Test Connector is a green, one pin connector located in the engine compartment.
^ When grounded, the test connector activates the self-diagnostic system, causing the dash mounted malfunction indicator lamp (MIL) to flash any
codes stored in ECU memory.
^ Grounding the test connector is also necessary to read malfunction codes with the Mazda Self-Diagnosis Checker or other compatible "Scan" tool.
^ The test connector is also grounded when making idle speed and ignition timing adjustments.
NOTE: The ECU continuously checks for input device malfunctions, but only checks output devices during the three second period after the ignition
is switched "ON" with the test connector grounded. If malfunction codes are present, the lowest numbered code will be displayed first,
followed by any others in numerical order.