
ENGINE
CO
A
CO
SECTION
ENGINE COOLING SYSTEM C
D
E
CONTENTS
QR25DE Changing Engine Coolant .......................................11
. F
PRECAUTION .............................................. 2
. ON-VEHICLE REPAIR ................................ 14
.
RADIATOR ........................................................ 14 G
PRECAUTIONS .................................................. 2
.
Precaution for Supplemental Restraint System Removal and Installation ........................................14
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................. 2
.
COOLING FAN .................................................. 16 H
Removal and Installation ........................................16
.
Precautions For High-Voltage System ..................... 2 .
Disassembly and Assembly ....................................16
.
Necessary for Steering Wheel Rotation After Bat-
tery Disconnect ........................................................ 2
. WATER PUMP .................................................. 18 I
Precaution for Liquid Gasket .................................... 2 . Removal and Installation ........................................18
.
PREPARATION ........................................... 4
. THERMOSTAT AND THERMOSTAT HOUS- J
PREPARATION .................................................. 4
. ING .................................................................... 20
Special Service Tool ................................................ 4
. Removal and Installation ........................................20
.
Commercial Service Tool ......................................... 4
. WATER CONTROL VALVE .............................. 22 K
Removal and Installation ........................................22
.
FUNCTION DIAGNOSIS .............................. 6
.
COOLING SYSTEM ........................................... 6
. SERVICE DATA AND SPECIFICATIONS L
Cooling Circuit .......................................................... 6
. (SDS) ........................................................... 24
.
Schematic ................................................................ 7
.
SERVICE DATA AND SPECIFICATIONS
M
OVERHEATING CAUSE ANALYSIS ................. 8
. (SDS) ................................................................. 24
Troubleshooting Chart .............................................. 8
. Capacity ..................................................................24
.
Thermostat .............................................................24
.
ON-VEHICLE MAINTENANCE ................... 10
. Water Control Valve ...............................................24 . N
Radiator ..................................................................24
.
ENGINE COOLANT ..........................................10
.
System Inspection .................................................. 10
.
O
P
Revision: July 2008 CO-1 2009 Altima Hybrid
PRECAUTIONS
< PRECAUTION > [QR25DE]
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" INFOID:0000000004211281
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING: