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Acura CSX. Manual - part 487

０１

０５

−

YES

21-65

BRN

CLIMATE CONTROL UNIT 32P CONNECTOR

BRN

CLIMATE CONTROL UNIT 32P CONNECTOR

7. Reconnect the climate control unit 32P connector.

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

9. Check the blower motor operates at all speeds.

Go to step 10.

Repair the problem in the blower motor

circuit.

10. Turn the ignition switch to LOCK (0).

11. Disconnect the climate control unit 32P connector.

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

13. Measure the voltage between the climate control

unit 32P connector terminal No. 6 and body ground.

Go to step 14.

Go to step 18.

14. Turn the ignition switch to LOCK (0).

15. Reconnect the climate control unit 32P connector.

16. Set the A/C button and fan control switch ON, then

turn the ignition switch to ON (II).

17. Measure the voltage between the climate control

unit 32P connector terminal No. 6 and body ground.

Substitute a known-good MICU and recheck.

If the symptom goes away, replace the original
MICU (see page 22-66).

Check for loose wires or poor connections at

the climate control unit 32P connector. If
connections are good, substitute a known-good
climate control unit and recheck. If the symptom/
indication goes away, replace the original climate
control unit.

Wire side of female terminals

Does the blower motor oper ate at all speeds?

Is ther e batter y voltage?

Is ther e 0.5 V or less?

08/08/21 14:43:34 61SNR030_210_0066

０２

０３

−

YES

21-66

Climate Control

A/C COMPRESSOR CLUTCH 3P CONNECTOR

GRN/RED

RED/BLK

A/C COMPRESSOR CLUTCH 3P CONNECTOR

BRN

CLIMATE CONTROL UNIT 32P CONNECTOR

18. Turn the ignition switch to LOCK (0).

19. Disconnect the A/C compressor clutch 3P connector.

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

21. Measure the voltage between the A/C compressor

clutch 3P connector terminal No. 1 and body
ground.

Go to step 22.

Repair open in the wire between the A/C

compressor and the MICU. If the wire is OK,
substitute a known-good MICU and recheck. If the
symptom goes away, replace the original MICU
(see page 22-66).

22. Test the A/C compressor thermal protector

(see page 21-85).

Go to step 23.

Replace the A/C compressor thermal

protector (see page 21-87).

23. Check for continuity between the climate control

unit 32P connector terminal No. 6 and the A/C
compressor clutch 3P connector terminal No. 3.

Check for loose wires or poor connections at

the climate control unit 32P connector and at the
A/C compressor clutch 3P connector.

Repair open in the wire between the climate

control unit and A/C compressor.

Wire side of female terminals

Is ther e batter y voltage?

Is the A/ C compr essor ther mal pr otector OK ?

Is ther e continuity?

08/08/21 14:43:34 61SNR030_210_0067

０１

ＳＮＲ９Ａ００Ｇ１０５０００３５３０１ＦＥＡＴ００

０１

ＳＮＲ９Ａ００Ｇ１０５０００３５３０１ＫＢＡＴ０２

−

21-67

In-car Temperature Sensor Test

In-car Temperature Sensor
Replacement

IN-CAR TEMPERATURE SENSOR

10
50

20
68

30
86

40 °C
104 °F

TEMPERATURE

RESISTANCE
(k

)

12
11
10

9
8
7
6
5
4
3
2
1

1. Remove the in-car temperature sensor (see page

21-67).

2. Test the in-car temperature sensor while holding it

in front of the dashboard center vent.

• Measure the resistance with the system set to

Max Cool.

• Measure the resistance with the system set to

Max Hot.

3. Compare the resistance reading between terminals

No. 1 and No. 2 of the in-car temperature sensor
with the specifications shown in the graph; the
resistance should be within the specifications.

4. If the resistance is not as specified, replace the

in-car temperature sensor (see page 21-67).

1. Remove the center panel:

• ’06-08 models with navigation (see page 23-155)
• ’06-08 models without navigation (see page

23-80)

• ’09 model with navigation (see page 23-355)
• ’09 model without navigation (see page 23-256)

2. Remove the self-tapping screw and the in-car

temperature sensor (A) from the center panel (B).

3. Install the sensor in the reverse order of removal.

Be sure to connect the air hose securely.

08/08/21 14:43:34 61SNR030_210_0068

０１

ＳＮＲ９Ａ００Ｇ１０５０００４３９０１ＦＥＡＴ００

０１

ＳＮＲ９Ａ００Ｇ１０５０００４３９０１ＫＢＡＴ０２

−

21-68

Climate Control

Outside Air Temperature Sensor
Test

Outside Air Temperature Sensor
Replacement

OUTSIDE AIR TEMPERATURE SENSOR

10
50

20
68

30
86

40 °C
104 °F

TEMPERATURE

RESISTANCE
(k

)

12
11
10

9
8
7
6
5
4
3
2
1

1. Remove the outside air temperature sensor

(see page 21-68).

2. Dip the sensor in ice water, and measure the

resistance. Then pour warm water on the sensor,
and check for a change in resistance.

3. Compare the resistance reading between terminals

No. 1 and No. 2 of the outside air temperature
sensor with the specifications shown in the graph;
the resistance should be within the specifications.

4. If the resistance is not as specified, replace the

outside air temperature sensor (see page 21-68).

1. Remove the front grille cover (see page 20-163).

2. Lift the tab (A) to release the lock, then remove the

outside air temperature sensor (B) from the bracket.
Disconnect the 2P connector (C) from the outside
air temperature sensor.

3. Install the sensor in the reverse order of removal.

08/08/21 14:43:35 61SNR030_210_0069

Content .. 485 486 487 488 ..