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6. CHECK MAF SENSOR • For 1.8L engine, check air flow in data stream. ECM TERMINAL NO. ITEM CONDITION DATA (AVERAGE DC VOLTAGE) 37 Sensor signal • Engine is running • ECT: 78°C • Idle: 795 RPM • IAT: 36°C • IAT signal voltage: Approximately 322 kg/h Approximately 1.39 V • For 1.6L engine, check MAP sensor signal voltage. TERMINAL NO. ITEM CONDITION DATA (DC VOLTAGE) 4 MAP sensor Engine: Running • Engine • Press accelerator Approximately 1.3 V • Press Up to Approximately 4 V (instantaneous) Is the check result normal? Yes >> Go to the next step. No >> Check connectors for rusted terminals or loose connectors in the air flow sensor circuit or ground. DIAGNOSIS & TESTING 03
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