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Home >> Mazda >> 1995 >> MX-3 L4-1598cc 1.6L DOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Testing and Inspection >> ECM Pin Test
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ECM Pin Test

INSPECTION
1. Lift up the floormat in front of the passenger's seat.


Connect Special Service Tools As Shown:





2. Connect the special service tool (SST) (Engine Signal Monitor) between the engine control module (ECM) and the wiring harness using the SST (Adapter) as shown.


View: Special Service Tool (SST)-Sheet Overlay:





3. Place the SST (Sheet) on the SST (Engine Signal Monitor).
4. Measure the voltage at each terminal.

Refer to Computers and Control Systems/ ECM Terminal Voltage Charts.


5. If any ECM terminal voltage is incorrect, check the input or output device and related wiring.
6. If they are normal, replace the ECM.


View: Special Service Tool:




CAUTION: Applying voltage to SST terminals A or B will damage the SST.

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