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(P0102) MASS AIR FLOW CIRCUIT (CONTINUED) 15. MAF SENSOR SIGNAL CIRCUIT SHORT TO GROUND With the ignition off. Measure the resistance between ground and the MAF Sensor Signal Is the resistance above 100 kohms? Yes >> Go To 16 No >> Repair the MAF Sensor Signal circuit for a short to ground. Perform POWERTRAIN VERIFICATION TEST - VER 2. 16. MAF SENSOR SIGNAL CIRCUIT SHORT TO SENSOR GROUND CIRCUIT With the ignition off. Measure the resistance between the MAF Sensor Signal circuit and Is the resistance above 100 kohms? Yes >> Go To 17 No >> Repair the MAF Sensor Signal circuit for a short to the Sensor Ground circuit. Perform POWERTRAIN VERIFICATION TEST - VER 2. 17. CHECKING FOR AIR RESTRICTIONS OR LEAKS Note: Check for any of the following conditions: • Restricted air intake ducts. • Misaligned air intake ducts. • Dirty air cleaner element. • Deteriorating air cleaner element. • Any objects blocking the air inlet screen of the MAF Sensor. • Any debris on the sensing elements. • A restricted exhaust system. Were any problems found? Yes >> Repair as necessary. Perform POWERTRAIN VERIFICATION TEST - VER 2. No >> Replace the Mass Air Flow Sensor. (Refer to 14 - FUEL SYSTEM/FUEL INJECTION/MANIFOLD AIR FLOW (MAF) SENSOR - REMOVAL). Perform POWERTRAIN VERIFICATION TEST - VER 2. ZH ENGINE - ELECTRICAL DIAGNOSTICS 9 - 17 |