Suzuki Grand Vitara JB627. Manual - part 288

7B-68 Air Conditioning System:

CAUTION

Be careful not to damage A/C evaporator fins. If A/C evaporator fin is bent, straighten it by using flat
head screwdriver or pair of pliers.

HVAC Unit Removal and Installation

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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”.

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 and disconnect heater hoses

(1) from HVAC unit.

5) Disconnect suction hose (2) and condenser outlet

hose (3) by removing attaching bolt (4).

6) Remove instrument panel referring to “Instrument

Panel Removal and Installation in Section 9C”.

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

unit.

9) Remove HVAC unit (1).

1. Blower upper case

11. Blower motor

21. Inside air temperature sensor

2. Air intake control actuator

12. Blower motor controller

22. Air flow control links

3. Air intake control links

13. Foot duct

23. Air flow control links cover

4. Air filter (if equipped)

14. Aspirator

24. Air flow control actuator

5. Air filter cover

15. Heater core

25. Aspirator hose

6. Air intake control door assembly

16. Heater unit upper case

26. Packing

7. Expansion valve

17. Temperature control door assembly

27. O-ring

8. Evaporator

18. Air flow control door assembly

: Do not reuse.

I5JB0A720043-01

I5JB0A720044-01

Air Conditioning System: 7B-69

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.

• 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 to radiator.
• Enable air bag system referring to “Enabling Air

Bag System in Section 8B”.

• Evacuate and charge system. Refer to “Operation

Procedure for Charging A/C with Refrigerant”.

A/C Evaporator Removal and Installation

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Removal

1) Remove HVAC unit referring to “HVAC Unit Removal

and Installation”.

2) Remove evaporator (1) from HVAC unit by

disassembling HVAC unit.

3) Remove evaporator temperature sensor from

evaporator.

Installation
Reverse removal procedure to install A/C evaporator
nothing the following instructions.
• Install evaporator temperature sensor onto evaporator

referring to “A/C Evaporator Temperature Sensor
Removal and Installation”.

A/C Evaporator Inspection

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1) Check evaporator fins for blockage. If found clogged,

use compressed air to clean the fins.

CAUTION

• Do not use water for cleaning of

evaporator.

• Be careful not to damage evaporator fins.

If evaporator fin is bent, straighten it by
using a screwdriver or pair of pliers. If any
leakage is found from fitting or tube, repair
or replace evaporator.

2) Check inlet and outlet fittings for crack or scratch.

Repair them as required.

I5JB0A720045-02

7B-70 Air Conditioning System:

A/C Evaporator Temperature Sensor Removal
and Installation

S6JB0B7206011

Removal

1) Remove A/C evaporator (1) referring to “A/C

Evaporator Removal and Installation”.

2) Remove A/C evaporator temperature sensor (2)

from evaporator.

Installation

1) Identify evaporator by the following tables.

NOTE
As for Evaporator, there are 4 varieties
depending on the internal structure.

2) Install evaporator temperature sensor onto

evaporator in a correct position as shown in figure.

CAUTION

Mis-position causes insufficiency cooling
and damaged of A/C system.

Evaporator

type

Selection condition

LH steering vehicle

Evaporator with
protection rubber (1)

Evaporator without
protection rubber (2)

RH steering vehicle

Evaporator with
protection rubber

Evaporator without
protection rubber

3. Protection rubber

I5JB0A720046-01

I5GEB4720001-01

[A]: Evaporator type A

5. Holding part fixed to fin of 6th

line from the left-side edge

[B]: Evaporator type B

6. Sensor part fixed to fin of 5th line

from the left-side edge

[C]: Evaporator type C

7. Holding part fixed to fin of 3rd

line from the left-side edge

[D]: Evaporator type D

8. Sensor part fixed to fin of 8th line

from the right-side edge

1. Evaporator temperature

sensor

9. Holding part fixed to fin of 6th

line from the right-side edge

2. Evaporator

10. Sensor part fixed to fin of 5th line

from the right-side edge

3. 34.5 mm (1.36 in.)

11. Holding part fixed to fin of 3rd

line from the right-side edge

4. Sensor part fixed to fin of 8th

line from the left-side edge

[A]

[B]

[C]

[D]

I5GEB4720002-03

Air Conditioning System: 7B-71

A/C Evaporator Temperature Sensor Inspection

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Check resistance between A/C evaporator temperature
sensor terminals. If check result is not in specification,
replace A/C evaporator temperature sensor with the new
one.

A/C evaporator temperature sensor resistance
11.2 – 11.5 k

Ω at 0 °C (32 °F)

3.8 – 3.9 k

Ω at 25 °C (77 °F)

Expansion Valve On-Vehicle Inspection

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Refer to “A/C System Performance Inspection”.

Expansion Valve Removal and Installation

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Removal

1) Recover refrigerant from the A/C system with

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

2) Loosen a bolt (1) and remove pipes from expansion

valve (2).

3) Loosen bolts (3) and remove expansion valve.

Installation

1) Reverse removal nothing the following instructions.

• Apply compressor oil to O-ring of expansion valve

and pipes.

2) Evacuate and charge system according to

“Operation Procedure for Charging A/C with
Refrigerant”.

1. Expansion valve

Ω

)

11.4

3.9
3.3

25
77

30
86

(˚C)

(˚F)

Resistance

Temperature

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IYSQ01720049-01

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