2005 MITSUBISHI LANCER ESP

55-1
GROUP 55
HEATER, AIR
CONDITIONER AND
VENTILATION
CONTENTS
SERVICE SPECIFICATIONS . . . . . . .55-3
LUBRICANTS . . . . . . . . . . . . . . . . . .55-3
SPECIAL TOOLS . . . . . . . . . . . . . . . .55-4
TROUBLESHOOTING . . . . . . . . . . . .55-5DIAGNOSIS TROUBLESHOOTING
FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55-5
SYMPTOM CHART . . . . . . . . . . . . . . . . . . . 55-5
SYMPTOM PROCEDURES . . . . . . . . . . . . 55-5
CHECK AT ECU TERMINAL . . . . 55-67
CHECK AT ECU TERMINAL . . . . 55-68
Continued on next page
W ARNING S RE GA RDING S E RV ICIN G O F SUP P LE MEN TAL R ES TRAI NT S Y ST EM (SRS ) E Q UIP PE D VE HICL ES
I mp roper se rvi ce o r m ai nte na nce of a ny c omp onent of the SRS , or an y SRS -re la te d c om pone nt, ca n le a d to
personal injury or death to service personnel (from inadvertent firing of the air bag) or to the driver (from
re nd er ing the S RS inop er ati ve).
S e rvic e or m ai nten anc e of an y SRS com pon ent or SRS -re late d com pone nt m ust be pe rfor me d only a t an
authorized MITSUBISHI dealer.
M ITSUBISHI dealer p erso nnel must thoroughly review th is man ual, and esp ecially its GROU P 52B - Su pplemen tal
Restraint System (SR S) b efore beginn ing an y service o r maintenance of any comp onent of th e SRS or any SRS-
rel ated com ponent.
NOTE
The SRS includes the following components: front impact sens ors , SRS-ECU, SRS warning lamp, air bag module, c lock spring
and interconnecting wiring. Other SRS-related components (that may have to be remov ed/installed in connection with SRS
service or maintenance) are indicated in the table of c ontents by an asterisk (*).

ON-VEHICLE SERVICE
HEATER, AIR CONDITIONER AND VENTILATION55-74
REFRIGERANT LEAK REPAIR
PROCEDURE
M1552001500277
LOST CHARGE
If the system has lost all charge due to a leak:
1. Evacuate the system (Refer to P.55-72).
2. Charge the system with approximately 480 − 520
g of refrigerant.
3. Check for leaks.
4. Discharge the system.
5. Repair leaks.
CAUTION
Replacement filter-drier units must be sealed
while in storage. The drier used in these units will
saturate water quickly upon exposure to the
atmosphere. When installing a drier, have all
tools and supplies ready for quick assembly to
avoid keeping the system open any longer than
necessary.
6. Replace receiver drier.
7. Evacuate and charge system.
LOW CHARGE
If the system has not lost all of its refrigerant charge;
locate and repair all leaks. If it is necessary to
increase the system pressure to find the leak
(because of an especially low charge) add
refrigerant. If it is possible to repair the leak without
discharging the refrigerant system, use the
procedure for correcting low refrigerant level.
HANDLING TUBING AND FITTINGS
Kinks in the refrigerant tubing or sharp bends in the
refrigerant hose lines will greatly reduce the capacity
of the entire system. High pressures are produced in
the system when it is operating. Extreme care must
be exercised to make sure that all connections are
pressure tight. Dirt and moisture can enter the
system when it is opened for repair or replacement of
lines or components. The following precautions must
be observed. The system must be completely
discharged before opening any fitting of connection
in the refrigeration system. Open fittings with caution
even after the system has been discharged. If any
pressure is noticed as a fitting is loosened, allow
trapped pressure to bleed off very slowly.
Never attempt to rebend formed lines to fit. Use the
correct line for the installation you are servicing. A
good rule for the flexible hose lines is keep the radius
of all bends at least 10 times the diameter of the
hose.Sharper bends will reduce the flow of refrigerant. The
flexible hose lines should be routed so that they are
at least 80 mm from the exhaust manifold. It is good
practice to inspect all flexible hose lines at least once
a year to make sure they are in good condition and
properly routed.
On standard plumbing fittings with O-rings, these
O-rings are not reusable.
COMPRESSOR NOISE CHECKM1552008700272
You must first know the conditions when the noise
occurs. These conditions are: weather, vehicle
speed, in gear or neutral, engine temperature or any
other special conditions.
Noises that develop during A/C operation can often
be misleading. For example: what sounds like a
failed front bearing or connecting rod, may be
caused by loose bolts, nuts, mounting brackets, or a
loose clutch assembly. Verify accessory drive belt
tension (power steering or alternator).
Improper accessory drive belt tension can cause a
misleading noise when the compressor is engaged
and little or no noise when the compressor is
disengaged.
Drive belts are speed-sensitive. That is, at different
engine speeds, and depending upon belt tension,
belts can develop unusual noises that are often
mistaken for mechanical problems within the
compressor.
ADJUSTMENT
1. Select a quiet area for testing. Duplicate
conditions as much as possible. Switch the
compressor on and off several times to clearly
identify compressor noise. To duplicate high
ambient conditions (high head pressure), restrict
air flow through the condenser. Install a manifold
gauge set to make sure discharge pressure
doesn't exceed 2,070 kPa.
2. Tighten all compressor mounting bolts, clutch
mounting bolt, and compressor drive belt. Check
to assure clutch coil is tight (no rotation or
wobble).
3. Check refrigerant hoses for rubbing or
interference that can cause unusual noises.
4. Check refrigerant charge (Refer to P.55-69).
5. Recheck compressor noise as in Step 1.
6. If noise still exists, loosen compressor mounting
bolts and retighten. Repeat Step 1.
7. If noise continues, replace compressor and repeat
Step 1.

J/C
CIRCUIT DIAGRAMS90-7
J/C (CONTINUED)
J/C (CONTINUED)
FRONT FOG
LAMP
·FRONT
FOG LAMP·FRONT FOG
LAMP
REAR FOG
LAMP
·REAR FOG
LAMP·REAR FOG
LAMP
HEATED
SEAT
HEATED
SEATIMMOBILIZER
SYSTEM·CLOCK·HEATER TURN-SIGNAL
LAMP AND
HAZARD
WARNING LAMP·TURN-SIGNAL
LAMP AND HAZARD
WARNING LAMP
TURN-SIGNAL
LAMP AND
HAZARD
WARNING LAMP ·MANUAL AIR
CONDITIONER
·HEATER
·MANUAL AIR
CONDITIONER ·HEADLAMP·HEADLAMP
·HEADLAMP
WASHER
ACCESSORY
SOCKET·CENTRAL
DOOR LOCKING
SYSTEM
·POWER WINDOWS
·REAR WIPER
AND WASHER
·ROOM LAMP AND
LUGGAGE
COMPARTMENT
LAMP·ROOM LAMP,
PERSONAL LAMP
AND LUGGAGE
ROOM LAMP
·TAIL LAMP,
POSITION LAMP,
LICENCE PLATE
LAMP AND LIGHTING
MONITOR BUZZER
·WINDSHIELD WIPER
AND WASHER
HEADLAMP
LEVELLING
SYSTEM
·INVECS-II 4A/T
·METER AND
GAUGECIGARETTE
LIGHTER AND
ASHTRAY
ILLUMINATION
LAMP
SPARE
CONNECTOR
(FOR AUDIO)·REAR WINDOW
DEFOGGER AND
DOOR MIRROR
HEATERRHEOSTAT
·FRONT FOG
LAMP
·TURN-SIGNAL
LAMP AND HAZARD
WARNING LAMP ·HEADLAMP
·HEADLAMP
WASHER ·CENTRAL
DOOR LOCKING
SYSTEM
·POWER WINDOWS
·REAR WIPER
AND WASHER
·ROOM LAMP AND
LUGGAGE
COMPARTMENT
LAMP·ROOM LAMP,
PERSONAL LAMP
AND LUGGAGE
ROOM LAMP
·TAIL LAMP,
POSITION LAMP,
LICENCE PLATE
LAMP AND LIGHTING
MONITOR BUZZER
·WINDSHIELD WIPER
AND WASHER
J/C (6)DIAGNOSIS
CONNECTOR
DIAGNOSIS
CONNECTOR SUPPLEMENTAL
RESTRAINT
SYSTEM (SRS)ABS
·ENGINE
CONTROL
SYSTEM
·IMMOBILIZER
SYSTEM
·INVECS-II
4A/T
·FRONT FOG
LAMP·FRONT FOG
LAMP
FRONT FOG
LAMP
·TURN-SIGNAL
LAMP AND HAZARD
WARNING LAMP ·HEADLAMP
WASHER·ROOM LAMP AND
LUGGAGE
COMPARTMENT
LAMP
·ROOM LAMP,
PERSONAL LAMP
AND LUGGAGE
ROOM LAMP
·TAIL LAMP,
POSITION LAMP,
LICENCE PLATE
LAMP AND LIGHTING
MONITOR BUZZER
·WINDSHIELD WIPER
AND WASHER·WINDSHIELD
WIPER AND
WASHER
WINDSHIELD
WIPER AND
WASHER
DIAGNOSIS
CONNECTOR·METER AND
GAUGE
·METER AND
GAUGEMETER AND
GAUGESPARE
CONNECTOR
(FOR AUDIO)
SPARE
CONNECTOR
(FOR FRONT
FOG LAMP)·SPARE
CONNECTOR
(FOR FRONT
FOG LAMP) CLOCK(FUSE )
23
(FUSE )2
RELAY
BOX
·REAR FOG
LAMP
·REAR WIPER AND
WASHER ·ABS
·BRAKE
WARNING LAMP
·CHARGING
SYSTEM
·ENGINE
CONTROL
SYSTEM
·FUEL WARNING
LAMP
·INVECS-II
4A/T
·SUPPLEMENTAL
RESTRAINT
SYSTEM (SRS) ·OIL PRESSURE
WARNING LAMPJ/B
(FUSE )
11J/B ACCESSORY
SOCKET
REMOTE
CONTROLLED
MIRROR
J/C (4)
ABS
ABSENGINE
CONTROL
SYSTEM
ENGINE
CONTROL
SYSTEM·ENGINE
CONTROL
SYSTEM
·ENGINE
CONTROL
SYSTEMMETER AND
GAUGE
(FUSE )10RELAY
BOX
(FUSE )
8RELAY
BOX INVECS-II
4A/T
IMMOBILIZER
SYSTEM·COOLING
SYSTEM
·METER AND
GAUGE·IGNITION
SYSTEM ·ENGINE
CONTROL
SYSTEM
·METER AND
GAUGE·IGNITION
SYSTEM

J/C
CIRCUIT DIAGRAMS90-9
J/C (CONTINUED)
J/C (CONTINUED)
·METER AND
GAUGESPARE
CONNECTOR
(FOR AUDIO)·REAR FOG
LAMP·INVECS-II
4A/T IMMOBILIZER
SYSTEMFRONT FOG
LAMP CLOCK REMOTE
CONTROLLED
MIRROR
TURN-SIGNAL
LAMP AND HAZARD
WARNING LAMP
TURN-SIGNAL
LAMP AND HAZARD
WARNING LAMP J/C (2)·FRONT FOG LAMP
·TURN-SIGNAL
LAMP AND HAZARD
WARNING LAMP ·HEADLAMP ·CENTRAL
DOOR LOCKING
SYSTEM
·POWER WINDOWS
·REAR WIPER
AND WASHER
·ROOM LAMP AND
LUGGAGE
COMPARTMENT LAMP·ROOM LAMP,
PERSONAL LAMP
AND LUGGAGE
ROOM LAMP
·TAIL LAMP,
POSITION LAMP,
LICENCE PLATE
LAMP AND LIGHTING
MONITOR BUZZER
·HEATER
·MANUAL AIR
CONDITIONER
·MANUAL AIR
CONDITIONER HEADLAMP
LEVELLING
SYSTEM
CIGARETTE
LIGHTER AND
ASHTRAY
ILLUMINATION
LAMP·REAR WINDOW
DEFOGGER
AND DOOR
MIRROR HEATERRHEOSTAT ·FRONT FOG LAMP
·REAR FOG LAMP
·TURN-SIGNAL
LAMP AND HAZARD
WARNING LAMP ·HEADLAMP ·CENTRAL
DOOR LOCKING
SYSTEM
·REAR WIPER
AND WASHER
·ROOM LAMP AND
LUGGAGE
COMPARTMENT LAMP·ROOM LAMP,
PERSONAL LAMP
AND LUGGAGE
ROOM LAMP
·TAIL LAMP,
POSITION LAMP,
LICENCE PLATE
LAMP AND LIGHTING
MONITOR BUZZER
·WINDSHIELD WIPER
AND WASHER·REAR FOG LAMP
·HEATER·WINDSHIELD WIPER
AND WASHERACCESSORY
SOCKET
·SPARE
CONNECTOR
(FOR FRONT FOG
LAMP)
(FUSE )
11J/B ·WINDSHIELD WIPER
AND WASHER
DIAGNOSIS
CONNECTOR
DIAGNOSIS
CONNECTOR
SUPPLEMENTAL
RESTRAINT
SYSTEM (SRS)ABS
·ENGINE
CONTROL
SYSTEM
·IMMOBILIZER
SYSTEM
·INVECS-II
4A/TFRONT FOG
LAMP REMOTE
CONTROLLED
MIRROR
·ROOM LAMP AND
LUGGAGE
COMPARTMENT
LAMP
·ROOM LAMP,
PERSONAL LAMP
AND LUGGAGE
ROOM LAMP·FRONT FOG
LAMP SPARE
CONNECTOR
(FOR FRONT FOG
LAMP)
ABS ·FRONT FOG LAMP
·TURN-SIGNAL
LAMP AND HAZARD
WARNING LAMP ·HEADLAMP ·CENTRAL
DOOR LOCKING
SYSTEM
·POWER WINDOWS
·REAR WIPER
AND WASHER
·ROOM LAMP AND
LUGGAGE
COMPARTMENT LAMP·ROOM LAMP,
PERSONAL LAMP
AND LUGGAGE
ROOM LAMP
·TAIL LAMP,
POSITION LAMP,
LICENCE PLATE
LAMP AND LIGHTING
MONITOR BUZZER
·REAR FOG LAMP
·FRONT FOG
LAMP
REAR FOG
LAMP
·ROOM LAMP AND
LUGGAGE
COMPARTMENT
LAMP
·ROOM LAMP,
PERSONAL LAMP
AND LUGGAGE
ROOM LAMPSPARE
CONNECTOR
(FOR AUDIO) CLOCK
(FUSE )23RELAY
BOX
(FUSE )16J/B
REAR FOG
LAMP
CENTRAL DOOR
LOCKING SYSTEM
J/C (4)ABS
ABSENGINE
CONTROL
SYSTEM
ENGINE
CONTROL
SYSTEM·ENGINE
CONTROL
SYSTEM
·ENGINE
CONTROL
SYSTEMMETER AND
GAUGE·METER AND
GAU GE
·IGNITION
SYSTEM
(FUSE )
10RELAY
BOX(FUSE )8RELAY
BOX
INVECS-II
4A/TIMMOBILIZER
SYSTEM·COOLING
SYSTEM
·ENGINE
CONTROL
SYSTEM
·METER AND
GAUGE·IGNITION
SYSTEM