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Engine Control Module: Testing and Inspection

PCME Testing:






CAUTION: Never apply voltage to Signal Monitor terminals A and B; equipment damage will result.

1. Unplug PCME connectors and connect Mazda SST as shown (or aftermarket equivalent). Use connector A of the adapter to check voltages at terminals 1A through 1V and at terminals 3A through 3Z. Use connector B to check voltages at terminals 2A through 2P.
2. Measure voltage at each terminal and compare to charts.
3. If any terminal voltage is incorrect, check the related input or output devices and wiring. If no problem is found, replace the PCME.

PCME TERMINAL VOLTAGE CHARTS

Part 1

PCME Pin Voltage Chart (Part 1):






Part 2

PCME Pin Voltage Chart (Part 2):






Part 3

PCME Pin Voltage Chart (Part 3):






Part 4

PCME Pin Voltage Chart (Part 4):






Part 5

PCME Pin Voltage Chart (Part 5):




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