Nissan Altima 2007-2012 Service Manual: Pre-inspection for diagnostic

Basic Inspection

The engine start function, door lock function, power distribution system and NATS-IVIS/NMS in the Intelligent Key system are closely related to each other regarding control. Narrow down the functional area in question by performing basic inspection to identify which function is malfunctioning. The vehicle security function can operate only when the door lock and power distribution systems are operating normally. Therefore, it is easy to identify any factor unique to the vehicle security system by performing the vehicle security operation check after basic inspection.

1.CHECK DOOR LOCK OPERATION

1. Check the door lock for normal operation with the Intelligent Key controller and door request switch.

Successful door lock operation with the Intelligent Key and request SW indicates that the remote keyless entry receiver is functioning normally.

Identify the malfunctioning point by referring to the DLK section if the door cannot be unlocked.

Can the door be locked with the Intelligent Key and door request switch? YES >> GO TO 2

NO >> Refer to DLK-415, "INTELLIGENT KEY : Symptom Table".

2.CHECK ENGINE STARTING

1. Checks that the engine starts when operating the Intelligent Key inserted into the key slot.

Does the engine start? YES >> GO TO 3

NO >> Refer to SEC-406, "Symptom Table".

3.CHECK STEERING LOCKING

1. Does the steering lock when operating door switch after switching the power supply from ON position (or ACC position) to LOCK position? If door switch is malfunctioning, BCM cannot lock the steering. If BCM does not detect DTC, steering lock unit is normal.

Does steering lock? YES >> GO TO 4

NO >> Refer to DLK-293, "Component Function Check".

4.CHECK POWER SUPPLY INDICATOR SWITCHING

1. Press push-button ignition switch and position indicator will switch from LOCK, ACC to ON gradually when steering is locked. Check that the position indicator is illuminated at different positions of the circuit.

Is each position indicator illuminating? YES >> GO TO 5

NO >> Refer to SEC-307, "Description".

5.CHECK VEHICLE SECURITY SYSTEM

1. Check the vehicle security system for normal operation.

The vehicle security function can operate only when the door lock and power distribution functions are operating normally.

Therefore, it is easy to identify any factor unique to the vehicle security by performing the vehicle security operation check after this basic inspection.

>> Refer to SEC-212, "Vehicle Security Operation Check".

Vehicle Security Operation Check

1.INSPECTION START

Turn ignition switch “OFF” and pull out Intelligent Key from key slot.

NOTE: Before starting operation check, open front windows.

>> GO TO 2

2.CHECK SECURITY INDICATOR LAMP

1. Lock doors using Intelligent Key or mechanical key.

2. Check that security indicator lamp illuminates for 30 seconds.

Security indicator lamp should illuminate.

OK >> GO TO 3

NG >> Perform diagnosis and repair. Refer to SEC-323, "Component Function Check".

3.CHECK ALARM FUNCTION

1. After 30 seconds, security indicator lamp will start to blink.

2. Open any door or hood before unlocking with Intelligent Key or mechanical key, or open trunk lid without Intelligent Key or mechanical key.

Do alarm function properly.

OK >> GO TO 4

NG >> Check the following.

• The vehicle security system does not phase in alarm mode. Refer to SEC-407, "Symptom Table".

• Alarm (horn, headlamp and hazard lamp) do not operate. Refer to SEC-407, "Symptom Table".

4.CHECK ALARM CANCEL OPERATION

Unlock any door or open trunk lid using Intelligent Key or mechanical key.

Alarm (horn, headlamp and hazard lamp) should stop.

OK >> Inspection End.

NG >> Check door lock function. Refer to DLK-246, "INTELLIGENT KEY : System Description".

    Diagnosis and repair workflow
    Work Flow OVERALL SEQUENCE DETAILED FLOW 1.GET INFORMATION FOR SYMPTOM Get the detailed information from the customer about the symptom (the condition and the environment when the incident/ma ...

    Inspection and adjustment
    ECM RE-COMMUNICATING FUNCTION Description Performing following procedure can automatically perform re-communication of ECM and BCM, but only when the ECM has been replaced with a new one (*1). ...

    Other materials:

    Basic inspection
    DIAGNOSIS AND REPAIR WORKFLOW Work Flow DETAILED FLOW 1.COLLECT THE INFORMATION FROM THE CUSTOMER It is also important to clarify customer complaints before inspection. First of all, reproduce symptoms, and understand them fully. Ask customer about his/her complaints carefully. In some case ...

    Positive crankcase ventilation
    Description This system returns blow-by gas to the intake manifold. The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake manifold. During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the ...

    Main line between dlc and abs 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 (connector side and harness side). - Harness co ...