Acura RSX Honda Integra. Manual — part 400

21-7

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

Receiver line A to the receiver line B: 13 N·m (1.3 kgf·m, 9.4 lbf·ft)

Suction line to the suction hose: 31 N·m (3.2 kgf·m, 23 lbf·ft)
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 compressor bracket to the engine block (10 x 1.25 mm): 44 N·m (4.5 kgf·m, 33 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)
A/C condenser line to the A/C condenser (6 x 1.0 mm): 9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)

Receiver line A to the receiver/dryer (6 x 1.0 mm): 9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)

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

HEATER UNIT

SUCTION HOSE

RECEIVER LINE B

DISCHARGE HOSE

A/C CONDENSER LINE

RECEIVER/DRYER

A/C CONDENSER

A/C COMPRESSOR
BRACKET

A/C COMPRESSOR

Receiver line B and the suction line to the evaporator (6 x 1.0 mm): 9.8 N·m (1.0 kgf·m, 7.2 lbf·ft)

RECEIVER LINE A

SUCTION LINE

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How to Retrieve a DTC

Example of DTC indication Pattern (DTC 3)

Canceling the Self-diagnostic Function

21-8

Climate Control

General Troubleshooting Information

RECIRCULATION INDICATOR

A/C INDICATOR

MODE CONTROL DIAL

REAR WINDOW DEFOGGER SWITCH

TEMPERATURE CONTROL DIAL

RECIRCULATION CONTROL SWITCH

FAN SWITCH

0.3 sec

0.3 sec

Self-diagnostic begins

Recirculation
indicator
comes on

Recirculation
indicator
goes off

0.3 sec

0.3 sec

1.5 sec

1.5 sec

Self-diagnostic finished

Recirculation or
A/C indicator
comes on

Recirculation or
A/C indicator
goes off

The Climate Control Unit has a self-diagnostic function. To run the self-diagnostic function, do the following:

1. Turn the ignition switch OFF.

2. Turn the fan switch OFF, the temperature control dial to Max Cool (58 °F or 18 °C), and the mode control dial to

Vent.

3. Turn the ignition switch ON (II), then press and hold the recirculation control switch. Within 10 seconds while

holding the switch down, press the rear window defogger switch five times. The recirculation indicator blinks
two times and the A/C indicator comes on, then the self-diagnostic will begin. About 15 seconds later, the self-
diagnostic will finish and the A/C indicator goes off. If there is any problem in the system after finished self-
diagnostic, the recirculation indicator will blink the Diagnostic Trouble Code (DTC) 1 through 13. When problems
in the evaporator temperature sensor circuit are detected (codes 14 and 15), the A/C indicator will blink the DTC. If
no DTCs are found, the indicator will not blink.

4. Turn the ignition switch OFF to cancel the self-diagnostic function. After completing repair work, run the self-

diagnostic function again to make sure that there are no other malfunctions.

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DTC

(Recirculation

Indication

Blinks)

Detection Item

Page

DTC

(A/C Indication

Blinks)

Detection Item

Page

21-9

DTC Troubleshooting Index

1

An open in the in-car temperature sensor circuit

(see page 21-16)

2

A short in the in-car temperature sensor circuit

(see page 21-17)

3

An open in the outside air temperature sensor circuit

(see page 21-17)

4

A short in the outside air temperature sensor circuit

(see page 21-19)

5

An open in the sunlight sensor circuit

(see page 21-19)

6

A short in the sunlight sensor circuit

(see page 21-20)

7

An open in the air mix control motor circuit

(see page 21-21)

8

A short in the air mix control motor circuit

(see page 21-21)

9

A problem in the air mix control linkage, door, or motor

(see page 21-22)

10

An open or short in the mode control motor circuit

(see page 21-23)

11

A problem in the mode control linkage, doors, or motor

(see page 21-24)

12

A problem in the blower motor circuit

(see page 21-25)

13

A problem in the EEPROM in the climate control unit;
the control unit must be replaced

(see page 21-48)

14

An open in the evaporator temperature sensor circuit

(see page 21-28)

15

A short in the evaporator temperature sensor circuit

(see page 21-29)

• In case of multiple problems, the recirculation or A/C indicator lights will indicate only the DTC with the least

number of blinks.

• In case of an intermittent failure, the climate control unit will store the DTC until the ignition switch is turned off.

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Symptom

Diagnostic procedure

Also check for

21-10

Climate Control

Symptom Troubleshooting Index

•
•

•

•
•

•
•

•
•

•
•

•
•

•
•

•
•

•

•
•

Recirculation control doors do not
change between Fresh and
Recirculate

Recirculation control motor circuit
troubleshooting (see page 21-30)

HVAC DTCs (see page 21-8)
Blown fuse No. 14 (10 A) in the
under-dash fuse/relay box
Cleanliness and tightness of all
connectors

The blower motor does not run
immediately even though the
engine is fully warmed up

NOTE: The temperature control dial
must be set between 58 °F (18 °C)
and 86 °F (32 °C)
ECT sensor circuit troubleshooting
(see page 21-31)

Cleanliness and tightness of all
connectors

Blower, heater controls, and A/C do
not work

Climate control power and ground
circuit troubleshooting (see page
21-32)

HVAC DTCs (see page 21-8)
Blown fuse No. 14 (10 A) in the
under-dash fuse/relay box
Poor ground at G402
Cleanliness and tightness of all
connectors

The A/C condenser fan does not run
at all (but the radiator fan runs with
the A/C on)

A/C condenser fan circuit
troubleshooting (see page 21-33)

HVAC DTCs (see page 21-8)
Blown fuse No. 1 (30 A) in the
under-hood fuse/relay box, and
No. 14 (10 A) in the under-dash
fuse/relay box
Poor ground at G302
Cleanliness and tightness of all
connectors

Both fans do not run with the A/C on

Radiator and A/C condenser fan
common circuit troubleshooting
(see page 21-35)

HVAC DTCs (see page 21-8)
Blown fuse No. 1 (30 A) and No. 4
(20 A) in the under-hood fuse/
relay box, and No. 14 (10 A) in the
under-dash fuse/relay box
Poor ground at G302
Cleanliness and tightness of all
connectors

The A/C compressor clutch does not
engage (but both fans run with the
A/C on)

A/C compressor clutch circuit
troubleshooting (see page 21-36)

HVAC DTCs (see page 21-8)
Blown fuse No. 1 (30 A) in the
under-hood fuse/relay box, and
No. 14 (10 A) in the under-dash
fuse/relay box
Cleanliness and tightness of all
connectors

A/C system does not come on (both
fans and the A/C compressor do not
work); heater is OK

A/C pressure switch circuit
troubleshooting (see page 21-38)

HVAC DTCs (see page 21-8)
Cleanliness and tightness of all
connectors

05/06/27 18:02:39 61S6M040_210_0011