Nissan Altima 2007-2012 Service Manual: Overheating cause analysis
Troubleshooting Chart
Cooling system
Cooling Circuit
1. Thermostat
2. Water control valve
3. Water control valve housing (Water outlet)
4. Cylinder block (Thermostat housing)
5. Water inlet
6. Radiator
7. Water pump
8. Cylinder ...
On-vehicle maintenance
ENGINE COOLANT
System Inspection
• Never remove the radiator cap when the engine is hot. Serious burns
could occur from high pressure
fluid escaping from the radiator.
• Wrap a thic ...
Other materials:
Additional service when replacing
control unit
Description
When replacing ECM, the following procedure must be performed.
Special Repair Requirement
1.PERFORM INITIALIZATION OF NVIS (NATS) SYSTEM AND REGISTRATION OF ALL
NVIS (NATS) IGNITION
KEY IDS
Refer to SEC-15, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requireme ...
P1805 brake switch
Description
Brake switch signal is applied to the ECM through the stop lamp switch when
the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is
driving.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATI ...
P0720 vehicle speed sensor cvt (secondary
speed sensor)
Description
The vehicle speed sensor CVT [output speed sensor (secondary speed sensor)]
detects the revolution of the
CVT output shaft and emits a pulse signal. The pulse signal is transmitted to
the TCM, which converts it into
vehicle speed.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMAT ...