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Acura CSX. Manual - part 472

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21-7

A/C Refrigerant Oil Replacement

3. Inspect the drive belt (see page 4-30).

4. Make sure no material is blocking the air flow to the

A/C condenser.

5. Check the dust and pollen filter. Replace it if it is

clogged (see page 21-75).

6. Check for kinks or sharp bends in the A/C lines and

hoses, which can greatly reduce system
performance. Replace A/C lines and hoses if they
are kinked or damaged (see page 21-8).

7. Start the engine, turn the air conditioning system

on, and allow it to run for a few minutes and reach
stable operation.

• Check that the A/C operates at each position of

the blower fan switch (except OFF). If the A/C
does not operate, refer to the symptom
troubleshooting.

• Check that the A/C compressor clutch (A) is

engaged. The pressure plate should be rotating
at the same speed as the pulley. If the pressure
plate does not engage, refer to the symptom
troubleshooting.

• Check that the A/C condenser fan (B) and radiator

fan (C) operate when the A/C compressor clutch
is engaged. If either fan fails to operate when the
A/C compressor clutch is engaged, refer to the
symptom troubleshooting.

• Check that the engine idle speed is correctly

maintained when the A/C is switched on and off
and the A/C compressor clutch is engaged and
disengaged.

Recommended PAG oil: SP-10

P/N 38897-P13-A01AH: 120 mL (4 fl·oz)

It is important to have the correct amount of refrigerant
oil in the A/C system to ensure proper lubrication of the
compressor. Too little oil damages the compressor; too
much oil reduces the cooling capacity of the system,
and can produce high vent temperatures.

• To avoid contamination, do not return the oil to the

container once dispensed, and never mix it with other
refrigerant oils.

• Immediately after using the oil, reinstall the cap on

the container, and seal it to avoid moisture
absorption.

• Do not spill the refrigerant oil on the vehicle; it may

damage the paint; if it gets on the paint, wash it off
immediately.

Add the recommended refrigerant oil in the amount
listed if you replace any of the following parts:

........

..............

............

........
........

......

........

..............

............

........
........

......

A/C condenser

.50 mL (1 2/3 fl·oz)

Evaporator

.40 mL (1 1/3 fl·oz)

Line or hose

.10 mL (1/3 fl·oz)

Receiver/Dryer

.10 mL (1/3 fl·oz)

Leakage repair

.25 mL (5/6 fl·oz)

A/C compressor

.Since the oil separator is

equipped inside the compressor
for this vehicle, oil drainage is
unnecessary at the time of
compressor replacement.

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21-7

A/C Refrigerant Oil Replacement

3. Inspect the drive belt (see page 4-30).

4. Make sure no material is blocking the air flow to the

A/C condenser.

5. Check the dust and pollen filter. Replace it if it is

clogged (see page 21-75).

6. Check for kinks or sharp bends in the A/C lines and

hoses, which can greatly reduce system
performance. Replace A/C lines and hoses if they
are kinked or damaged (see page 21-8).

7. Start the engine, turn the air conditioning system

on, and allow it to run for a few minutes and reach
stable operation.

• Check that the A/C operates at each position of

the blower fan switch (except OFF). If the A/C
does not operate, refer to the symptom
troubleshooting.

• Check that the A/C compressor clutch (A) is

engaged. The pressure plate should be rotating
at the same speed as the pulley. If the pressure
plate does not engage, refer to the symptom
troubleshooting.

• Check that the A/C condenser fan (B) and radiator

fan (C) operate when the A/C compressor clutch
is engaged. If either fan fails to operate when the
A/C compressor clutch is engaged, refer to the
symptom troubleshooting.

• Check that the engine idle speed is correctly

maintained when the A/C is switched on and off
and the A/C compressor clutch is engaged and
disengaged.

Recommended PAG oil: SP-10

P/N 38897-P13-A01AH: 120 mL (4 fl·oz)

• To avoid contamination, do not return the oil to the

container once dispensed, and never mix it with other
refrigerant oils.

• Immediately after using the oil, reinstall the cap on

the container, and seal it to avoid moisture
absorption.

• Do not spill the refrigerant oil on the vehicle; it may

damage the paint; if it gets on the paint, wash it off
immediately.

Add the recommended refrigerant oil in the amount
listed if you replace any of the following parts:

........

..............

............

........
........

......

........

..............

............

........
........

......

A/C condenser

.50 mL (1 2/3 fl·oz)

Evaporator

.40 mL (1 1/3 fl·oz)

Line or hose

.10 mL (1/3 fl·oz)

Receiver/Dryer

.10 mL (1/3 fl·oz)

Leakage repair

.25 mL (5/6 fl·oz)

A/C compressor

.Since the oil separator is

equipped inside the compressor
for this vehicle, oil drainage is
unnecessary at the time of
compressor replacement.

08/08/21 14:40:56 61SNR030_210_0008

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21-8

Climate Control

A/C Line Replacement

Discharge hose to the A/C compressor (6 x 1.0 mm): 9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)

A/C compressor to the A/C compressor bracket (8 x 1.25 mm): 22 N·m (2.2 kgf·m, 16 lbf·ft)

Discharge hose to the A/C condenser (6 x 1.0 mm): 9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)
Receiver line to the A/C condenser (6 x 1.0 mm): 9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)

A/C line to the suction hose (24 x 1.5 mm): 31.9 N·m (3.2 kgf·m, 23.5 lbf·ft)

A/C pressure sensor to the receiver line (11 x 1.0 mm): 11.3 N·m (1.2 kgf·m, 8.3 lbf·ft)

A/C COMPRESSOR
BRACKET

A/C COMPRESSOR

DISCHARGE HOSE

A/C CONDENSER

RECEIVER LINE

SUCTION HOSE

Suction hose to the A/C compressor (6 x 1.0 mm): 9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)

A/C lines to the evaporator (6 x 1.0 mm): 9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)

Receiver line to the A/C line (16 x 1.5 mm): 13.3 N·m (1.4 kgf·m, 9.8 lbf·ft)

A/C compressor bracket to the engine block (8 x 1.25 mm): 24 N·m (2.4 kgf·m, 17.7 lbf·ft)

A/C LINES

A/C PRESSURE
SENSOR

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How to Check for DTCs with the HDS

21-9

General Troubleshooting Information

1. Make sure the ignition switch is in LOCK (0).

2. Connect the HDS to the data link connector (DLC) (A) located under the driver’s side of the dashboard.

3. Turn the ignition switch to ON (II).

4. Make sure the HDS communicates with the vehicle and the climate control unit. If it doesn’t, troubleshoot the DLC

circuit (see page 11-204).

5. Select HVAC/CLIMATE CONTROL in the BODY ELECTRICAL menu.

6. Select DTCs in the HVAC/CLIMATE CONTROL menu.

7. Check for DTCs. If any DTCs are indicated, write down the DTCs, then go to the indicated DTC troubleshooting. If

no DTCs are indicated, refer to symptom troubleshooting.

NOTE:

• After troubleshooting, clear the DTCs with the HDS.
• For specific operations, refer to the user’s manual that came with the HDS.

08/08/21 14:40:57 61SNR030_210_0010

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