Nissan Altima 2007-2012 Service Manual: P0327, P0328 KS
Description
The knock sensor is attached to the cylinder block. It senses engine knocking using a piezoelectric element. A knocking vibration from the cylinder block is sensed as vibrational pressure. This pressure is converted into a voltage signal and sent to the ECM.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and run it for at least 5 seconds at idle speed.
2. Check 1st trip DTC.
Is 1st trip DTC detected? YES >> Go to EC-781, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E9. Refer to Ground Inspection in GI-45, "Circuit Inspection".
Is the inspection result normal? YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK KNOCK SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Disconnect knock sensor harness connector and disconnect ECM harness connector.
2. Check the continuity between knock sensor harness connector and ECM harness connector.
3. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check the continuity between knock sensor harness connector and ECM harness connector.
2. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK KNOCK SENSOR
Refer to EC-782, "Component Inspection".
Is the inspection result normal? YES >> GO TO 5.
NO >> Replace knock sensor.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
>> INSPECTION END
Component Inspection
1.CHECK KNOCK SENSOR
1. Turn ignition switch OFF.
2. Disconnect knock sensor harness connector.
3. Check resistance between knock sensor terminals as follows.
NOTE: It is necessary to use an ohmmeter which can measure more than 10 MΩ.
CAUTION: Do not use any knock sensors that have been dropped or physically damaged. Use only new ones.
Is the inspection result normal? YES >> INSPECTION END
NO >> Replace knock sensor.
P0300, P0301, P0302, P0303, P0304 Misfire
DTC Logic DTC DETECTION LOGIC When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crankshaft position (CKP) sensor (POS) signal to vary, ECM ca ...P0335 CKP Sensor (POS)
Description The crankshaft position sensor (POS) is located on the oil pan facing the gear teeth (cogs) of the signal plate. It detects the fluctuation of the engine revolution. The sensor consi ...Other materials:
Evaporator
Removal and Installation
COMPONENTS
1. Heater and cooling unit case
2. Evaporator
3. Intake sensor
4. In-cabin microfilter
5. Evaporator cover
6. Heater and cooling unit foot duct RH
7. Blower unit
REMOVAL
1. Remove the heater and cooling unit assembly. Refer to HA-32, "HFC-134a
...
Servicing air conditioner
The air conditioner system in your NISSAN vehicle
is charged with a refrigerant designed with
the environment in mind.
This refrigerant does not harm the earth’s
ozone layer.
Special charging equipment and lubricant is required
when servicing your NISSAN air conditioner.
Using imprope ...
Power steering
WARNING
● If the engine is not running or is turned
off while driving, the power assist for
the steering will not work. Steering will
be harder to operate.
● When the power steering warning light
illuminates with the engine running,
there will be no power assist for the
steering. ...