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EC-186 < DTC/CIRCUIT DIAGNOSIS > [HR16DE] P0101 MAF SENSOR 2. Disconnect mass air flow sensor harness connector and reconnect it again. 3. Start engine and warm it up to normal operating temperature. 4. Check the voltage between ECM harness connector and ground. *: Check for linear voltage rise in response to engine being increased to about 4,000 rpm. Is the inspection result normal? YES >> INSPECTION END NO >> Clean or replace mass air flow sensor. Refer to EM-26, "Removal and Installation" ECM Condition Voltage Connector + − Terminal F11 45 52 Ignition switch ON (Engine stopped.) Approx. 0.4 V Idle (Engine is warmed-up to normal operating temperature.) 0.8 - 1.3 V 2,500 rpm (Engine is warmed-up to normal operating temperature.) 1.4 - 1.9 V Idle to about 4,000 rpm 0.8 - 1.3 V to Approx. 2.4 V* |