Nissan Altima 2007-2012 Service Manual: Component diagnosis

On board diagnostic (OBD) system
Diagnosis Description INTRODUCTION The ECM has an on board diagnostic system, which detects malfunctions related to engine sensors or actuators. The ECM also records various emission-related d ...

Trouble diagnosis - specification value
Description The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONITOR” mode of CONSULT-III during normal operation of the Engine Contr ...

Other materials:

Before starting the engine
● Make sure the area around the vehicle is clear. ● Check fluid levels such as engine oil, coolant, brake fluid, and windshield-washer fluid as frequently as possible, or at least whenever you refuel. ● Check that all windows and lights are clean. ● Visually inspect ti ...

Park/neutral position (PNP) switch
Exploded View 1. Washer 2. Manual lever 3. PNP switch 4. CVT assembly Removal and Installation Refer to the figure for removal and installation. NOTE: • Align PNP switch position when installing. • After installation of PNP switch, check the continuity of PNP switch. • Afte ...

B2601 shift position
Description BCM confirms the shift position with the following 2 signals. • CVT selector lever • P position signal from IPDM E/R (CAN) DTC Logic DTC DETECTION LOGIC NOTE: • If DTC B2601 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to SEC-36 ...