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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System L3 With TC) >> Engine Control System Operation Inspection >> Input Signal System Investigation Procedure >> Locating the source of unusual signals
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Locating the source of unusual signals

CAUTION:
  • Compare the M-MDS monitor voltage with the measurement voltage using the digital measurement system function. If you use another tester, a misreading may occur.
  • When measuring the voltage, attach the tester ground to the ground of the PCM that Is being tested, or to the engine itself. If this is not done, the measured voltage and actual voltage may differ
  • After connecting the pin to a waterproof coupler, confirm continuity and measure the voltage, and inspect the waterproof connector for cracks. If there are any, use sealant to fix them. Failure to do this may result in deterioration of the wiring harness or terminal from water damage, leading to problems with the vehicle.
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