Nissan Altima 2007-2012 Service Manual:  Power supply, ground & circuit elements coupe

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Ignition signal
Description The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil secondary circuit. Component Function Check 1.INSPECTION ...

Magnet clutch
Component Function Check INSPECTION FLOW 1. CONFIRM SYMPTOM BY PERFORMING OPERATION CHECK - MAGNET CLUTCH 1. Press ignition switch ON. 2. Press vent switch ( ). 3. Press A/C switch. 4. Confirm that the compressor clutch engages (sound or visual inspection). (Discharge air and blower ...

P0171 fuel injection system function
DTC Logic DTC DETECTION LOGIC With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the A/F sensors 1. The ECM calculates the necessary compensation to correct t ...