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(P0101) MAF SENSOR PERFORMANCE (CONTINUED) When Monitored and Set Condition • When Monitored: With the engine running and no fault in the throttle valve actuator. • Set Condition: The Mass Air Flow (MAF) Sensor value is less than 16 kg/h when the throttle valve angle is POSSIBLE CAUSES FUSED ENGINE CONTROL RELAY OUTPUT CIRCUIT OPEN FUSED ENGINE CONTROL RELAY OUTPUT CIRCUIT SHORT TO GROUND SENSOR GROUND CIRCUIT OPEN MASS AIR FLOW SENSOR SIGNAL CIRCUIT OPEN MASS AIR FLOW SENSOR SIGNAL CIRCUIT SHORT TO GROUND 5-VOLT SUPPLY CIRCUIT OPEN 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND MASS AIR FLOW SENSOR POWERTRAIN CONTROL MODULE For a complete Powertrain Control Module Circuit Diagram, (Refer to 9 - ENGINE - SCHEMATICS AND DIA- Diagnostic Test 1. CHECK FOR CURRENT DTC Turn the ignition on. With the DRB III T , read PCM DTCs. Is this DTC present? Yes >> For complete diagnosis of this DTC, refer to (P0102) MASS AIR FLOW CIRCUIT. No >> Go To 2 2. INTERMITTENT WIRING AND CONNECTORS The conditions necessary to set this DTC are not present at this time. Note: Check connectors — Clean/repair as necessary. Poor pin to terminal connections can set DTCs. Using Note: Check for any Technical Service Bulletins that may apply. Were there any problems found? Yes >> Repair as necessary. Perform POWERTRAIN VERIFICATION TEST - VER 2. No >> The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition. ZH ENGINE - ELECTRICAL DIAGNOSTICS 9 - 9 |