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Engine Management – V6 – Diagnostics Page 6C1-2–70
Additional Information • The MAF sensor circuit DTCs is a Type B DTC. Refer to 1.4 Diagnostic Trouble Codes in this Section, for action • Refer to 6C1-1 Engine Management – V6 – General Information for details of the MAF sensor operation. • For an intermittent fault condition, refer to 5.2 Intermittent Fault Conditions in this Section. • Inspect the MAF sensor for an incorrectly routed harness or if the harness is too close to the following: − ignition coil, − solenoids, − relays, and − motors. • A low minimum air rate may cause this DTC to set during deceleration. Inspect for the following conditions: − a plugged or a collapsed intake air duct, or a dirty air filter element, − objects that block the MAF sensor air inlet screen, and − sticking or dirty throttle plate or throttle bore. • Any un-metered air that enters the engine may cause this DTC to set. Inspect for vacuum leaks in the following: − intake manifold, − throttle body, − barometric pressure (BARO) sensor seal, − EVAP canister purge valve seal, − brake booster system, − air induction system, and − crankcase ventilation system. • Since fault condition in a wiring connector may trigger DTCs, always test the connectors related to this diagnostic • To assist diagnosis, refer to 3 Wiring Diagrams and Connector Charts in this Section, for the system wiring DTC P0101, P0102 or P0103 Diagnostic Table Step Action Yes No 1 Has the Diagnostic System Check been performed? Go to Step 2 Refer to 4.4 Diagnostic System Check in this Section 2 1 Switch off the ignition for 30 seconds. 2 Operate the vehicle within the conditions for running the DTC. 3 Using Tech 2, select the DTC display function. Does DTC P0101, P0102 or P0103 fail this ignition cycle? Go to Step 3 Refer to Additional Information in this DTC |