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DIESEL CONTROL SYSTEM FLA -171 Specification : Continuity (below 1.0Ω ) 4) Is the measured resistance within the specification? YES ▶ Go to "3.Check short to battery in signal circuit " as follows NO ▶ Repair open spots in signal circuit and go to "Verification of Vehicle Repair". 3. Check short to battery in signal circuit 1) IG KEY "OFF", ENGINE "OFF". 2) Disconnect MAFS connector and ECM connector 3) IG KEY "ON" 4) Measure the voltage of terminal 3 of MAFS connector. Specification : 0.0V~0.1V 5) Is abnormal voltage detected in the circuit with both connector disconnected? YES ▶ Repair short to battery and go to "Verification of Vehicle Repair". NO ▶ Go to "Ground Circuit Inspection". GROUND CIRCUIT INSPECTION EB5A491E 1. IG KEY "OFF", ENGINE "OFF". 2. Disconnect MAFS connector and ECM connector 3. IG KEY "ON" 4. Measure the voltage of terminal 3 of MAFS connector. [ TEST "A" ] 5. Measure the voltage of MAFS terminal 3 and terminal 2. [ TEST "B" ] Specification : the voltage difference between TEST "A" and TEST "B" is within 200mV 6. Is the measured voltage within the specification? YES ▶ Go to "Component Inspection". |