Nissan Altima 2007-2012 Service Manual: Nissan vehicle immobilizer systemnats symptoms
Symptom Table
Security indicator does not turn ON or flash.
CAUTION: • Follow Trouble Diagnosis Flowchart referring to “SEC-10, "Work Flow"”. Determine malfunctioning condition before performing this diagnosis.
• Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis.
• Check systems shown in the “Action” column in this order.
CONDITIONS OF VEHICLE (OPERATING CONDITIONS)
• Intelligent Key is not inserted into key slot.
• Engine switch is not depressed.
Vehicle security system symptoms
Symptom Table
*: Check the system is in the armed phase. ...
Other materials:
IPDM E/R (intelligent power distribution
module engine room)
Diagnosis Procedure
1. CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible link are not blown.
Is the fuse blown?
YES >> Replace the blown fuse or fusible link after repairing the affected
circuit.
NO >> GO TO 2
2. CHECK POWER SUPPLY CIRCUIT
1. Tu ...
P0043, P0044 HO2S3 heater
Description
SYSTEM DESCRIPTION
The ECM performs ON/OFF control of the heated oxygen sensor 3 heater
corresponding to the engine speed,
amount of intake air and engine coolant temperature.
OPERATION
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC C ...
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
...