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 Remote Keyless Entry 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 keyfob.
Successful door lock operation with the keyfob 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 keyfob? 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 keyfob inserted into the key slot.
Does the engine start? YES >> GO TO 3
NO >> Refer to SEC-593, "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-499, "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-414, "Vehicle Security Operation Check".
Vehicle Security Operation Check
1.INSPECTION START
Turn ignition switch “OFF” and pull out keyfob from key slot.
NOTE: Before starting operation check, open front windows.
>> GO TO 2
2.CHECK SECURITY INDICATOR LAMP
Lock doors using keyfob 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-514, "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 keyfob or mechanical key, or open trunk lid without keyfob 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-594, "Symptom Table".
• Alarm (horn, headlamp and hazard lamp) do not operate. Refer to SEC-594, "Symptom Table".
4.CHECK ALARM CANCEL OPERATION
Unlock any door or open trunk lid using keyfob 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/m ...
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 ( ...
Other materials:
Engine control system QR25DE except for california
Basic inspection
DIAGNOSIS AND REPAIR WORK FLOW
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/malfunction occurred) using the “Diagnostic Work S ...
Reverse signal circuit
Description
A reverse signal is supplied from the back-up lamp relay to the rear view
camera control unit. When this signal
is received, the display shows a view to the rear of the vehicle.
Diagnosis Procedure
1.BACK-UP LAMP INSPECTION
1. Turn ignition switch ON.
2. Shift selector lever t ...
P2138 APP sensor
Description
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelerator
position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometer which tran ...