Nissan Altima 2007-2012 Service Manual: Heater & cooling unit assembly
Removal and Installation
COMPONENTS
1. Steering member
2. Heater and cooling unit
3. Blower unit
REMOVAL
1. Discharge the refrigerant from the A/C system. Refer to HA-24, "HFC-134a (R-134a) Service Procedure".
2. Drain the engine coolant from the cooling system. Refer to CO-12, "Changing Engine Coolant" (QR25DE), CO-35, "Changing Engine Coolant" (VQ35DE).
3. Disconnect the negative battery terminal.
4. Remove the wiper motor and linkage. Refer to WW-116, "FRONT WIPER DRIVE ASSEMBLY : Removal and Installation".
5. Remove the upper cowl (for VQ35DE only). Refer to EXT-18, "Removal and Installation".
6. Remove the strut tower bar (for VQ35DE only). Refer to FSU-12, "Exploded View".
7. Remove the lower RH cowl (for VQ35DE only). Refer to EXT-18, "Removal and Installation".
8. Disconnect the heater hoses from the heater core pipes.
CAUTION: Cap or wrap the pipe joint with a suitable material such as vinyl tape to avoid the entry of contaminants into the system.
9. Disconnect the refrigerant lines from the expansion valve. Refer to HA-31, "Component".
CAUTION: Cap or wrap the line joint with a suitable material such as vinyl tape to avoid the entry of contaminants into the system.
10. Remove the instrument panel assembly. Refer to IP-12, "Removal and Installation".
11. Remove the steering column assembly. Refer to ST-14, "Removal and Installation".
12. Disconnect the drain hose.
13. Remove the heater and cooling unit assembly attached to the steering member as one assembly from the vehicle.
14. Remove the blower unit from the heater and cooling unit and steering member assembly.
15. Remove the heater and cooling unit from the steering member.
INSTALLATION
Installation is in the reverse order of removal.
• Fill the radiator with the specified water and coolant mixture. Refer to MA-12, "Fluids and Lubricants".
• Recharge the A/C system. Refer to HA-24, "HFC-134a (R-134a) Service Procedure".
Intake sensor
Removal and Installation
REMOVAL
1. Remove the evaporator. Refer to VTL-20, "Removal and Installation".
2. Release the intake sensor clip and then remove the intake sensor.
CAUTION: ...
Blower unit
Removal and Installation
COMPONENTS
1. Heater and cooling unit
2. Blower unit
Front
REMOVAL
1. Remove the heater and cooling unit assembly. Refer to VTL-12, "Removal and
Installation&q ...
Other materials:
Camera image signal circuit (rear view camera to
camera control
unit)(coupe)
Description
Rear view camera images are transmitted to the rear view camera control unit
using the camera image signal
circuits.
Diagnosis Procedure
1.CHECK CAMERA IMAGE SIGNAL CIRCUIT CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect rear view camera control unit connector and rear v ...
Shift lock system
Description
The selector lever cannot be shifted from “P” position to any other position
unless the ignition switch is in the
ON position and the brake pedal is depressed.
Wiring Diagram - CVT SHIFT LOCK SYSTEM -
Coupe
Wiring Diagram - CVT SHIFT LOCK SYSTEM -
Sedan
Diagno ...
BCM branch line 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 terminals and connectors of the BCM for damage, bend and loose
connection (unit side and
connector side).
Is the inspec ...