Suzuki Grand Vitara JB416 / JB420. Manual — part 296

7B-75 Air Conditioning System:

3) Check that there is no continuity between terminals

“C” and “D”.
If there is continuity, replace integration relay No.2
(1).

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

of relay. Connect battery negative (–) terminal to
terminal “A” of relay. Check for continuity between
terminal “C” and “D”. If there is no continuity when
relay is connected to the battery, replace integration
relay No.2 (1).

Compressor Assembly On-Vehicle Inspection

S5JB0A7206041

1) Install manifold gauge set (1) as shown in the 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

Compressor Assembly Removal and
Installation for M16 Engine Model

S5JB0A7206042

Removal

1) Run engine at idle with A/C ON for 10 minutes.
2) Disconnect negative (–) cable at battery.
3) Recover refrigerant from the A/C system using

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

NOTE
The amount of compressor at removed must
be measured and the same amount must be
poured when installing the compressor.

4) Disconnect thermal protector lead wire.
5) Disconnect suction and discharge hoses from

compressor.

NOTE
Cap open fitting immediately to keep
moisture out of system.

6) Remove compressor drive belt referring to “P/S

Pump and A/C Compressor (If Equipped) Drive Belt
Removal and Installation for M16 Engine Model in
Section 6C”.

7) Remove compressor with clutch assembly from its

mount.

NOTE
If compressor assembly is replaced with one,
drain oil from compressor. Then, measure its
amount.

[A]: A/T relay
[B]: HO2S heater relay

[C]: Compressor relay

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

“D”

“C”

[A]

[B]

[C]

1

“B”

“A”

“C”

“D”

“B”

“A”

I5JB0A720058-01

1

5

3

4

2

I5JB0A720059-01

Air Conditioning System: 7B-76

Installation
Reverse removal procedure noting the following
instructions.
• If compressor is replaced, pour new compressor oil

referring to “Precautions on Replenishing Compressor
Oil”.

• Evacuate and charge the A/C system referring to

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

• Adjust drive belt tension referring to “P/S Pump and A/

C Compressor (If Equipped) Drive Belt Inspection and
Adjustment for M16 Engine Model in Section 6C”.

Tightening torque
Compressor mounting bolt for M16 engine
model: 25 N·m (2.5 kgf-m, 18.0 lb-ft)

Compressor Assembly Removal and
Installation for J20 Engine Model

S5JB0A7206043

Removal

1) Run engine at idle with A/C ON for 10 minutes.
2) Disconnect negative (–) cable at battery.
3) Recover refrigerant from the A/C system using

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

NOTE
The amount of compressor oil at removed
must be measured and the same amount
must be poured when installing the
compressor.

4) Drain engine coolant.
5) Remove radiator inside hose and outside hose from

vehicle.

6) Disconnect magnet clutch connector.
7) Disconnect suction hose and discharge hose from

compressor.

NOTE
Cap open fitting immediately to keep
moisture out of system.

8) Remove compressor from its mount.

NOTE
If compressor assembly is replaced with one,
drain oil from compressor. Then, measure its
amount.

Installation

CAUTION

!

Be sure to use HFC-134a (R-134a)
compressor oil.

Reverse removal procedure noting the following
instructions.
• If compressor is replaced, pour new compressor oil

referring to “Precautions on Replenishing Compressor
Oil”.

• Fill engine coolant to radiator.
• Evacuate and charge system referring to “Evacuation”

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

• Install drive belt referring to “Water Pump and

Generator Drive Belt Removal and Installation (For
J20 Engine) in Section 1J”.

Tightening torque
Compressor mounting bolt for J20 engine
model: 25 N·m (2.5 kgf-m, 18.0 lb-ft)

7B-77 Air Conditioning System:

Magnet Clutch Components for M16 Engine Model

S5JB0A7206044

6

9

7

4

5

2

1

8

(b)

3

(a)

I5JB0A720060-01

1. Armature plate bolt

5. Shim(s)

9. Thermal switch

2. Armature plate

6. Magnet clutch coil

: 15 N

⋅m (1.5 kgf-m, 11.0 lb-ft)

3. Circlip

7. Compressor body assembly

: 4.9 N

⋅m (0.49 kgf-m, 4.0 lb-ft)

4. Magnet clutch

8. Magnet clutch coil bolt

: Do not reuse.

Air Conditioning System: 7B-78

Magnet Clutch Components for J20 Engine Model

S5JB0A7206045

Magnet Clutch Operating Check for M16 Engine
Model

S5JB0A7206046

Check the following items.
• Inspect armature plate and rotor for signs of oil.
• Check clutch bearings for noise and grease leakage.
• Using an ohmmeter (3), measure resistance of stator

coil between clutch lead wire (1) and body ground (2).
If measured resistance is not within tolerance, replace
coil.

Standard resistance for magnet clutch
Approx. 2.9 – 3.2

Ω at 20 °C (68 °F)

Magnet Clutch Operating Check for J20 Engine
Model

S5JB0A7206047

Check the following items.
If any detects are found, repair or replace magnet clutch
assembly.
• Inspect armature plate and rotor for signs of oil.
• Check clutch bearings for noise and grease leakage.
• Using an ohmmeter (3), measure resistance of stator

coil between clutch lead wire (1) and body ground (2).
If measured resistance is not within tolerance, replace
coil.

Specified current of magnet clutch
Approx. 3.8 – 6.0

Ω at 25 °C (77 °F)

2

3

5

6

1

4

4

(a)

I5JB0A720061-01

1. Armature plate bolt

3. Shim(s)

5. Magnet clutch pulley

: 20 N

⋅m (2.0 kgf-m, 14.5 lb-ft)

2. Armature plate

4. Circlip

6. Magnet clutch coil

: Do not reuse.

1

2

3

I5JB0A720062-01

I5JB0A720063-02