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:
Air conditioning cut control
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM via the CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and
battery voltage.
SYSTEM DESCRIPTION
This system improves engine operation when t ...
P1726 electric throttle control system
Description
Electric throttle control actuator consists of throttle control motor,
accelerator pedal position sensor, throttle
position sensor etc. The actuator sends a signal to the ECM, and ECM sends the
signal to TCM with CAN
communication.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMAT ...
B1145 – B1148 side curtain air bag
module RH
Description
DTC B1145 – B1148 RH SIDE CURTAIN AIR BAG MODULE
The RH side curtain air bag module is wired to the air bag diagnosis sensor
unit. The air bag diagnosis sensor
unit will monitor for opens and shorts in detected lines to the RH side curtain
air bag module.
PART LOCATION
Refer ...