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:

BCM branch line circuit
Diagnosis Procedure INSPECTION PROCEDURE 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspec ...

TCM branch line circuit
Diagnosis Procedure INSPECTION PROCEDURE 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). - TCM - Harnes ...

Malfunction indicator lamp
Description The Malfunction Indicator Lamp (MIL) is located on the combination meter. The MIL will light up when the ignition switch is turned ON without the engine running. This is a bulb check. When the engine is started, the MIL should go off. If the MIL remains on, the on board diagno ...