Nissan Qashqai (2007-2010). Manual - part 111

OVERHEATING CAUSE ANALYSIS

CO-27

< SYMPTOM DIAGNOSIS >

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Except cool-
ing system 
parts mal-
function

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Overload on engine

Abusive driving

High engine rpm under no 
load

Driving in low gear for ex-
tended time

Driving at extremely high 
speed

Power train system mal-
function

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Installed improper size 
wheels and tires

Dragging brakes

Improper ignition timing

Blocked or restricted air 
flow

Blocked bumper

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Blocked radiator grille

Installed car brassiere

Mud contamination or paper 
clogging

Blocked radiator

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Blocked condenser

Blocked air flow

Installed large fog lamp

Symptom

Check items

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< PRECAUTION >

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PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

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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 SRC and SB section of this Service Man-
ual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRC section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

PREPARATION

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< PREPARATION >

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PREPARATION

PREPARATION

Special Service Tools

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Tool number
(RENAULT tool number)
Tool name

Description

—
(M.S. 554-07)
Reservoir tank cap tester

1. Adapter A
—
(M.S. 554-01)
2. Adapter B
—
(M.S. 554-06)

Checking radiator and reservoir tank cap

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< ON-VEHICLE MAINTENANCE >

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ENGINE COOLANT

ON-VEHICLE MAINTENANCE

ENGINE COOLANT

Inspection

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LEVEL 

• Check if the reservoir tank engine coolant level is within the “MIN”

to “MAX” when the engine is cool.

• Adjust the engine coolant level as necessary.
• Check that the reservoir tank cap is tightened.

WARNING:

Never remove reservoir tank cap when engine is hot. Serious
burns could occur from high-pressure engine coolant escaping
from reservoir tank.

LEAKAGE

• To check for leakage, fit the adapter to the reservoir tank, and then

connect it to the reservoir tank cap tester [SST: — (M.S.554-07)]
(A) as shown.

WARNING:

Never remove reservoir tank cap when engine is hot. Serious
burns could occur from high-pressure engine coolant escap-
ing from reservoir tank.

CAUTION:

Higher test pressure than specified may cause radiator dam-
age.

• If anything is found, repair or replace damaged parts.

Draining

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WARNING:

• Never remove reservoir tank cap when engine is hot. Serious burns could occur from high-pressure

engine coolant escaping from reservoir tank. 

• Wrap a thick cloth around the reservoir tank cap. Slowly turn it a quarter of a turn to release built-up

pressure. Then turn it all the way.

1.

Disconnect radiator hose (lower) and reservoir tank cap. 
When draining all of engine coolant in the system, open water drain plugs on cylinder block. Refer
to 

EM-210, "Exploded View"

.

CAUTION:

• Perform this step when engine is cold.
• Never spill engine coolant on drive belt.

2.

Remove reservoir tank if necessary, and drain engine coolant and clean reservoir tank before installing. 
• Remove of engine mounting insulator (RH) is necessary. Refer to 

EM-194, "M/T : Exploded View"

 (M/T

models) or 

EM-198, "CVT : Exploded View"

 (CVT models).

3.

Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated,
flush the engine cooling system. Refer to 

CO-33, "RADIATOR : Inspection"

.

Refilling

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1.

Install reservoir tank if removed.

2.

Connect radiator hose (lower).
If water drain plugs on cylinder block are removed, close and tighten them. Refer to 

EM-210,

"Exploded View"

.

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Testing pressure: Refer to 

CO-46, "Radiator"

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