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DIESEL CONTROL SYSTEM FLA -151 POWER CIRCUIT INSPECTION E7C8EA54 1. Check power circuit voltage 1) IG KEY "OFF", ENGINE "OFF". 2) Disconnect MAFS connector. 3) IG KEY "ON". 4) Measure the voltage of MAFS connector terminal 1 and 4. Specification : Terminal 4 : 4.8V~5.1V ( Sensor power ) 5) Is the measured voltage within the specification? YES ▶ Go to "Signal Circuit Inspection". NO ▶ When output voltage is not detected at terminal 1 : SIGNAL CIRCUIT INSPECTION E792AA3E 1. Check signal circuit voltage 1) IG KEY "OFF", ENGINE "OFF". 2) Disconnect MAFS connector and ECM connector. 3) IG KEY "ON". 4) Measure the voltage of MAFS connector terminal 5. Specification : 4.8~5.1V 5) Is the measured voltage within the specification? YES ▶ Go to "Ground Circuit Inspection". NO ▶ Go to "2. Check open in signal circuit" as follows. 2. Check short to ground in signal circuit 1) IG KEY "OFF", ENGINE "OFF". |