Suzuki Grand Vitara JB419. Manual — part 129

Air Conditioning System: 7B-22

Liquid leak detector

WARNING

!

• To prevent explosions or fires, make sure

that there are no flammables in the vicinity.

• When exposed to fire, the refrigerant turns

into a poisonous gas (phosgene). Do not
inhale this gas.

There are a number of fittings and places throughout the
air conditioning system where a liquid leak detector
solution may be used to pinpoint refrigerant leaks.
By merely applying the solution to the area in question
with a swab, such as attached to the bubbles will form
within seconds if there is a leak.
For confined areas, such as sections of the evaporator
and condenser, an electronic (gas) leak detector (1) is
more practical for determining leaks.

Special tool
(A): 09990–86011

HVAC Unit Removal and Installation

S5JB0B7206008

Removal

WARNING

!

Failure to follow the following procedure and
WARNING may cause air bag deployment,
personal injury, damage to parts, or air bag
being unable to deploy.
• Never rest a steering column assembly on

steering wheel with air bag (inflator)
module face down and column vertical.

• When handling the air bag (inflator)

modules (driver and passenger), be careful
not to drop it or apply an impact to it. If an
excessive impact was applied (e.g.,
dropped from a height of 91.4 cm (3 feet) or
more, never attempt disassembly or repair
but replace it with a new one.

• When grease, cleaning agent. Oil, water,

etc. has got onto air bag (inflator) modules
(driver and passenger), wipe off
immediately with a dry cloth.

1) Disconnect negative (–) cable at battery.
2) Disable air bag system referring to “Disabling Air

Bag System in Section 8B in related manual”.

3) Recover refrigerant from A/C system using recovery

and recycling equipment referring to “Recovery” in
“Operation Procedure for Charging A/C with
Refrigerant”.

4) Drain engine coolant referring to “Cooling System

Draining in Section 1F”.

5) Remove heater hoses (1) from HVAC unit as follows.

a) Release lock plate (3) completely in arrow

direction.

b) Remove quick joint (2).

6) Disconnect suction hose (4) and condenser outlet

hose (5) by removing attaching bolt (6).

7) Remove instrument panel referring to “Instrument

Panel Removal and Installation in Section 9C in
related manual”.

8) Disconnect rear duct from HVAC unit.
9) Detach wiring, connectors and clamps from HVAC

unit.

10) Remove HVAC unit (1).

I5JB0A720035-01

6

2

3

5

4

1

I5JB0B720011-01

1

I5JB0A720044-01

7B-23 Air Conditioning System:

Installation

1) Install HVAC unit by reversing removal procedure,

noting the following items.
• When installing each part, be careful not to catch

any wiring harness.

• Connect quick joint (1) to HVAC unit, and then

push lock plate (2) completely in arrow direction.

• Replenish specified amount of compressor oil to

compressor suction side referring to “Precautions
on Replenishing Compressor Oil”.

• Install the padding (1) to the installation hole

uniformly.

• Fill engine coolant referring to step 13) to 20) of

“Cooling System Refilling in Section 1F”.

• Enable air bag system referring to “Enabling Air

Bag System in Section 8B in related manual”.

• Evacuate and charge system. Refer to “Operation

Procedure for Charging A/C with Refrigerant”.

A/C Refrigerant Pressure Sensor and Its Circuit
Inspection

S5JB0B7206015

1) Connect manifold gauge set to the charging valves.
2) Check output voltage for A/C refrigerant pressure

sensor (1) between each sensor terminal, and then
compare measured voltage with specified voltage in
graph.
If it does not show such characteristic as shown in
graph, replace refrigerant pressure sensor with new
one.

3. Heater hose

2

3

1

I5JB0B720012-01

4.5

3.6

0.42

180

2600

3300

(V)

(kPa)

1

I5JB0B720013-01

Air Conditioning System: 7B-24

A/C Refrigerant Pressure Sensor Removal and
Installation

S5JB0B7206016

Removal

1) Recover refrigerant from the A/C system with the

recovery and recycling equipment referring to
“Recovery” in “Operation Procedure for Charging A/
C with Refrigerant”.

2) Disconnect negative (–) cable from battery.
3) Disconnect A/C refrigerant pressure sensor

connector (3).

4) Remove A/C refrigerant pressure sensor (1) from

liquid pipe (2).

Installation
Reverse removal procedure noting the following
instructions.
• Apply compressor oil to O-ring of A/C refrigerant

pressure sensor.

• Tighten A/C refrigerant pressure sensor (1) to

specified torque.

Tightening torque
A/C refrigerant pressure sensor (a): 9 N·m (0.9
kgf-m, 6.5 lb-ft)

• Evacuate and charge the A/C system referring to

“Evacuation” and “Charge” in “Operation Procedure
for Charging A/C with Refrigerant”.

A/C Compressor Drive Belt Inspection

S5JB0B7206030

Refer to “Accessory Drive Belt Inspection in Section 1J”.

A/C Compressor Drive Belt Removal and
Installation

S5JB0B7206031

Refer to “Accessory Drive Belt and Idler Pulley Removal
and Installation in Section 1J”.

1

2

3

I5JB0B720014-01

1, (a)

I5JB0B720015-01

7B-25 Air Conditioning System:

A/C Compressor Relay Inspection

S5JB0B7206032

1) Disconnect negative (–) cable at battery.
2) Remove compressor relay (1) from vehicle.
3) Check that there is no continuity between terminal

“c” and “d”. If there is continuity, replace relay.

4) Connect battery positive (+) terminal to terminal “b”

of relay.
Connect battery negative (–) terminal to terminal “a”
of relay.
Check continuity between terminal “c” and “d”.
If there is no continuity when relay is connected to
the battery, replace relay.

Compressor Assembly On-Vehicle Inspection

S5JB0B7206033

1) Install manifold gauge set (1) as shown in figure.
2) Close Hi (4) and Lo (5) side valves.

3) Run engine at fast idle.
4) Check compressor for the following items.

If any of the checks indicated a defect, repair
compressor.
• High pressure gauge reading is not low and low

pressure gauge reading is not higher than normal.

• Metallic sound
• Leakage from compressor

1

a

b

c

d

I5JB0A720056-01

2. High pressure side (Delivery side hose)
3. Low pressure side (Suction side pipe)

1

2

4

5

3

I5JB0B720016-02