vent ACURA CSX 2006 Service Repair Manual

Pressure Test
Test results Related symptoms Probable causeRemedy
21-103






Suction and
discharge pressures
are normal
Warm air from the vents. The A/C system
contains too much
refrigerant oil.
The air mix door is
not operating
properly.Recover refrigerant (see page 21-90)
and evacuate the system (see page
21-91). Adjust the amount of oil in
the system, then recharge the
system (see page 21-92).
Check air mix door operation
(see page 21-72), and repair as
needed.
Suction and
discharge pressures
are roughly equal
and steady The suction and
discharge pressures
equalize when the engine
is revved. The A/C compressor
clutch or the drive
belt is slipping, or the
compressor shaft
seal is leaking.Check whether the A/C compressor
clutch or the drive belt is slipping.
If the drive belt is slipping, replace
the drive belt (see page 4-31). Also
inspect the drive belt auto-tensioner
(see page 4-31).
If the A/C compressor clutch is
slipping, replace it (see page 21-86).
Check the A/C compressor shaft seal.
If it’s leaking, replace the A/C
compressor (see page 21-83).
Suction and
discharge pressures
are roughly equal but
fluctuate Suction and discharge
pressures fluctuate while
running. Pressures
equalize as soon as the
A/C compressor
disengages. The compressor
discharge valve or
the compressor
gasket is faulty.
Replace the A/C compressor (see page
21-83).
Suction and
discharge pressures
are roughly equal
and abnormally low The suction and
discharge pressures do
not change during
continued operation. The A/C system is
undercharged.
Recover refrigerant (see page 21-90),
then do the refrigerant leak check
(see page 21-93). Repair any leaks,
then recharge the system (see page
21-92).
Suction and
discharge pressures
are abnormally high,
but normalize when
the condenser is
cooled The suction pressure
decreases when cool
water is sprayed on the
A/C condenser.
The A/C system is
overcharged.
Recover refrigerant (see page 21-90),
evacuate the system (see page 21-91),
and recharge the system to
specifications (see page 21-92).
(cont’d)
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Test results Related symptoms Probable causeRemedy
21-105






The suction pressure
is high, the discharge
pressure is low, and
there are particle
contaminants in the
refrigerant lines
The expansion valve
and/or the compressor
discharge hose are
contaminated with metal
flakes or desiccant
particles. The A/C compressor
is malfunctioning.
Replace the A/C compressor (see page
21-83). If the system is contaminated
with desiccant, replace the receiver/
dryer (see page 21-89).
The suction pressure
is high, the discharge
pressure is low, and
the pressures quickly
change when the A/C
disengages The discharge and
suction pressures
equalize soon after the
A/C compressor stops.
The A/C compressor
seal is faulty.
Replace the A/C compressor (see page
21-83).
Suction and
discharge pressures
are both low and
none of the
refrigerant lines are
cold There is no frost on the
expansion valve, and the
low-pressure liquid line is
not cold.
The A/C system has a
leak (very low
refrigerant charge).
Do the refrigerant leak check
(see page 21-93), repair any leaks, and
recharge the A/C system (see page
21-92).
Suction and
discharge pressures
are both low, and the
expansion valve or
the suction line is
abnormally cold The temperature
around the expansion
valve is too low
compared to the
temperature around
the receiver/dryer.
The low pressure
(suction) hose/line is
cooler than the
evaporator.The discharge hose/
line is clogged or
kinked, which is
restricting refrigerant
flow.
The suction hose/line
is clogged or kinked,
which is restricting
refrigerant flow.
Repair or replace the faulty A/C line
(see page 21-8).
Initially, the suction
and discharge
pressure are normal,
but both become
abnormally low
during operation During extended
operation, the air flow
from the vents decreases.
The evaporator is
freezing up.
Run the fan with A/C compressor off to
warm the evaporator, then test the
evaporator temperature sensor
(see page 21-70). If necessary, replace
the evaporator temperature sensor.
Suction and
discharge pressures
are both low and
there are abnormal
temperature changes
at the expansion
valve During extended
operation, warm air
comes out of the vents,
the suction pressure
decreases, and heavy
frost occurs on the low
pressure liquid line.
The low pressure liquid
line is cold at the
expansion valve, but
warm after the valve.
There is frost on the
expansion valve.The expansion valve
is stuck closed.
Replace the expansion valve
(see page 21-80), and the receiver/
dryer (see page 21-89).
Check the old expansion valve for
contamination. If contaminants are
found, replace the component that
caused the contamination.
(cont’d)
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•••
•••
•••
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 Under-hood Fuse/Relay Box
Fuse
Number Amps Component(s) or Circuit(s) Protected
22-60Power Distribution
Fuse to Components Index
1 100 A
(BAT)Battery, Power distribution
70 A
(EPS) EPS control unit
250A (IG)Ignition switch
80 A
60 A
(OPTION) No. 5, No. 6, No. 7, No. 27, No. 28, No. 29, and No. 31 fuses (in the under-dash fuse/relay box)
330A (ABS MTR) ABS modulator-control unit , VSA modulator-control unit
30 A
40 A
(ABS FSR) ABS modulator-control unit , VSA modulator-control unit
450A (H/L)No. 18, No. 19, No. 20, and No. 21 fuses (in the under-dash fuse/relay box)
40 A
(P/W) No. 24, No. 25, No. 26, No. 30, No. 32, and No. 33 fuses (in the under-dash fuse/relay box), Power window relay
(in the under-dash fuse/relay box)
5 Not used
6 20 A A/C condenser fan motor (via A/C condenser fan relay)
7 20 A Radiator fan motor (via radiator fan relay)
8 30 A Noise condenser (via rear window defogger relay), Rear window defogger (via rear window defogger relay)
9 40 A Blower motor (via blower motor relay)
10 10 A MICU (turn signal/hazard warning lights circuit)
11 15 A A/F sensor (Sensor 1) (via PGM-FI subrelay), EVAP canister vent shut valve (via PGM-FI subrelay), PGM-FI subrelay, No. 15 fuse (in the under-hood fuse/relay box) (via PGM-FI subrelay)
12 15 A Brake lights, ECM/PCM, Horn, MICU
13 Not used
14 Not used
15 7.5 A A/C condenser fan relay
16 Not used
17 15 A Stereo amplifier
18 15 A Ignition coil relay, Ignition coils (via Ignition coil relay)
19 15 A CKP sensor (via PGM-FI main relay 1), CMP sensor B (via PGM-FI main relay 1), ECM/PCM, ETCS control relay, Injectors (via PGM-FI main relay 1), PGM-FI main relay 1 (FI MAIN), PGM-FI main relay 2 (FUEL PUMP)
20 7.5 A A/C compressor clutch (via A/C compressor clutch relay)
21 15 A ECM/PCM (via ETCS control relay)
22 7.5 A Ceiling light, Courtesy lights, Front individual map lights, Ignition key light, Trunk light, Vanity mirror lights
23 10 A Audio unit , Data link connector (DLC), Gauge control module (speedo), Gauge control module (tach), HandsFreeLink control unit , Immobilizer-keyless control unit, MICU, Moonroof switch, Navigation unit
1: ’06-07 models
2: ’08-09 models
3: ’06-07 Touring and Premium models
4: ’07 TYPE S and ’08-09 models
5: ’08-09 models
6: TYPE S model
7: Without navigation system
8: With navigation system
9: ’09 model with navigation system
1
2
34
3
4 34
6 5
7 9 8
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Disconnection Reconnection
22-68Battery
Battery Terminal Disconnection and Reconnection
B
A
2.9 5.9 N·m
(0.3 0.6 kgf·m, 2.1 4.4 lbf·ft)
C
Some systems store data in memory that is lost when
the battery is disconnected. Do the following steps
before disconnecting the battery.1. Make sure you have the anti-theft code(s) for the audio and/or the navigation system (if equipped).
2. If you are replacing the audio unit, write down the audio presets (AM and FM), and the XM audio
presets (if equipped), because the audio unit does
not retain the presets after the battery is
disconnected.
3. Make sure the ignition switch is in LOCK (0).
4. Disconnect and isolate the negative cable from the battery.
NOTE: Always disconnect the negative cable from
the battery first.
5. Disconnect the positive cable from the battery. Some systems store data in memory that is lost when
the battery is disconnected. Do the following steps to
restore the systems back to normal operation.
1. Clean the battery terminals.
2. Test the battery (see page 22-67).
3. Reconnect the positive cable (A) to the battery (B) first, then reconnect the negative cable (C) to the
battery.
NOTE: Always connect the positive cable to the
battery first.
4. Apply multipurpose grease to the terminals to prevent corrosion.
5. Enter the anti-theft code(s) for the audio system and/or the navigation system (if equipped).
6. Enter the audio presets (if applicable), and enter the XM audio presets (if equipped).
7. Set the clock (for vehicles without navigation).
08/08/21 14:24:04 61SNR030_220_0070
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Wake-up and Sleep Function
Fail-safe Function
Hardware Fail-safe Control
Software Fail-safe Control
Fail-safe function
22-84Multiplex Integrated Control System
System Description (cont’d)
The multiplex integrated control system has wake-up and sleep functions to decrease parasitic draw on the battery
when the ignition switch in LOCK (0).
 In the sleep mode, the MICU stops functioning (communication and CPU control) when it is not necessary for the system to operate.
 As soon as any operation is requested (for example, a door is unlocked), the related control unit in the sleep mode
immediately wakes up and begins to function.
 When the ignition switch is turned to LOCK (0), and the driver’s door is opened, then closed, there is a delay of about 40 seconds before the control unit goes from the wake-up mode to the sleep mode.
 The sleep mode will not function if any door is opened or if a key is in the ignition.
 The draw is reduced from 200 mA to less than 35 mA when in the sleep mode.
NOTE: Sleep and Wake-up Mode Test (see page 22-99).
To prevent improper operation, the MICU has a fail-safe function. In the fail-safe mode, the output signal is fixed when
any part of the system malfunctions (for example, a faulty control unit or communication line).
Each control unit has a hardware fail-safe function that fixes the output signal when there is a CPU malfunction, and a
software fail-safe function that ignores the signal from a malfunctioning control unit , which allows the system to
operate normally.
When a CPU problem or a abnormal power supply voltage is detected, the MICU moves to the hardware fail-safe
mode, and each system output load is set to the pre-programmed fail-safe value.
When any of the data from the B-CAN circuit cannot be received within a specified time, or an unusual combination of
the data is recognized, the MICU moves to the software fail-safe mode. The data that cannot be received is forced to a
pre-programmed value.
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Driver’s Door and Left Rear Door Front Passenger’s Door and Right Rear Door
22-137
Door Lock Actuator Test
A
B
Terminal
Position 12
LOCK
UNLOCK A
B
Terminal
Position 34
LOCK
UNLOCK
1. Remove the door panel (see page 20-7).
2. Disconnect the 10P connector (A) from the actuator (B).
NOTE: The illustration shows the driver’s door.
3. Check actuator operation by connecting power and ground according to the table. To pr event damage
to the actuator, apply battery voltage only
momentarily.
4. If the actuator does not operate as specified, replace it. 1. Remove the door panel.
 Front door panel (see page 20-7)
 Rear door panel (see page 20-17)
2. Disconnect the 10P connector (A) from the actuator (B).
NOTE: The illustration shows the front passenger’s
door.
3. Check actuator operation by connecting power and ground according to the table. To prevent damage
to the actuator, apply battery voltage only
momentarily.
4. If the actuator does not operate as specified, replace it.
08/08/21 14:26:05 61SNR030_220_0139
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22-168 Exterior Lights
HID Bulb Replacement
A
C B A
A transient high tension (25,000 V) occurs at the
bulb sockets of the high intensity discharge (HID)
lamps when the combination light switch is turned
ON. It may cause serious electrical shock or
electrocution if you do not observe the cautions.
 Never turn on the combination light switch before fitting the HID bulbs to their bulb sockets
and completing the reassembly of the headlight
assembly.
 Do not service the headlight assembly in wet conditions, such as rain or snow, near a sprinkler
system, or when your hands are wet to prevent
electrocution.
 Do not touch the surface of the HID bulbs with your bare hands and do not stain it with any oils
and fats.
 Do not disassemble the inverter unit and the igniter fats.
 Do not turn on the HID bulb by using a power source other than the battery mounted on your
vehicle.
1. Turn the combination light switch OFF.
2. Do the battery terminal disconnection procedure (see page 22-68).
3. Remove the battery. (left side bulb) 4. Turn the cover (A) 45 ° counterclockwise to remove
it from the headlight assembly.
5. Turn the socket (A) 45 ° counterclockwise to remove it from the bulb (B).
6. Pull the retaining spring (C) away from the bulb then remove the bulb.
7. Install the new bulb in the reverse order of removal. Make sure the notches in the bulb align with the
tabs in the headlight.
8. Install the parts in the reverse order of removal.
9. Do the battery terminal reconnection procedure (see page 22-68).
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µ
µ µ
µ
Special Tools Required
YES
NO YES
NO
22-170Exterior Lights
HID Lamp System Troubleshooting
A
B
A transient high tension (25,000 V) occurs at the
bulb sockets or the high intensity discharge (HID)
lamps when the combination light switch is turned
ON, it may cause serious electrical shock or
electrocution if you do not observe the cautions.
 Never turn on the combination light switch before fitting the HID bulbs to their bulb sockets
and completing the reassembly of the headlight
assembly.
 Do not service the headlights assembly in wet conditions, such as rain or snow, near a sprinkler
system, or when your hands are wet to prevent
electrocution.
 Do not touch the surface of the HID bulbs with your bare hands and do not stain it with any oils
and fats.
 Do not disassemble the inverter unit and the igniter unit.
 Do not turn on the HID bulb by using a power source other than the battery mounted on your
vehicle.
HID bulb test light 07AAJ-S3MA100
NOTE: Before troubleshooting the HID Lamp System,
do the multiplex integrated control system
troubleshooting using B-CAN System Diagnosis Test
Mode A (see page 22-93). 1. Check the No. 16 (15 A), No. 17 (15 A), and No. 21 (30 A) fuses in the under-dash fuse/relay box.
Go to step 2.
Replace the fuse(s), and recheck.
2. Turn the combination light switch OFF.
3. Do the battery terminal disconnection procedure (see page 22-68). 4. Remove the socket from the HID bulb (see page
22-168).
5. Check for corrosion (A) and traces of electrical arcing (B) at the socket mating part.
Go to step 7.
Replace the socket, and recheck.
Ar e f uses OK ? I s t he sock et cor r od ed or bur nt ?
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22-17422-174 Exterior Lights
Headlight Adjustment (cont’d) Headlight Replacement
U: UP
D: DOWN
A A
D B
C
A
5. If necessary, open the hood and adjust the
headlights to local requirements by turning the
adjusters (A). A transient high tension (25,000 V) occurs at the bulb sockets or the high intensity discharge (HID)
lamps when the combination light switch is turned
ON, it may cause serious electrical shock or
electrocution if you do not observe the cautions.
Do not service the headlights assembly in wet
conditions, such as rain or snow, near a sprinkler
system, or when your hands are wet to prevent
electrocution.
1. Remove the front bumper (see page 20-146).
2. Remove the connectors (A) from the headlight assembly (B).
3. Remove the five bolts, then remove the headlight.
4. Remove the bolt (C) and the corner upper beam (D) from the headlight.
5. Install the headlight in the reverse order of removal.
6. After replacement, adjust the headlight to local requirements.
The illustration is shown from
back side of left headlight.
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22-17422-174 Exterior Lights
Headlight Adjustment (cont’d) Headlight Replacement
U: UP
D: DOWN
A A
D B
C
A
5. If necessary, open the hood and adjust the
headlights to local requirements by turning the
adjusters (A). A transient high tension (25,000 V) occurs at the bulb sockets or the high intensity discharge (HID)
lamps when the combination light switch is turned
ON, it may cause serious electrical shock or
electrocution if you do not observe the cautions.
Do not service the headlights assembly in wet
conditions, such as rain or snow, near a sprinkler
system, or when your hands are wet to prevent
electrocution.
1. Remove the front bumper (see page 20-146).
2. Remove the connectors (A) from the headlight assembly (B).
3. Remove the five bolts, then remove the headlight.
4. Remove the bolt (C) and the corner upper beam (D) from the headlight.
5. Install the headlight in the reverse order of removal.
6. After replacement, adjust the headlight to local requirements.
The illustration is shown from
back side of left headlight.
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