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Home >> Mazda >> 1986 >> 323 LX, 2D Hatchback >> Repair and Diagnosis >> Engine Performance >> System >> EFI Control System >> Testing & Diagnosis >> Electronic Control Unit
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Electronic Control Unit

Connect voltmeter negative lead to ground. Turn ignition on and measure voltage at each ECU terminal. See CONTROL UNIT TESTING chart for voltage specifications and terminal locations.

Fig 1: Electronic Control Unit Test Chart
G48207