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.
SENSOR
COMPONENT LOCATIONS70-7
AC208762
A
AD
Timing belt front
upper coverTiming belt front
lower coverEngine crank
angle sensor
<4G1>
Engine crank angle
sensor connector
AC302008
A<4G6>
ABHeat protector
Crankshaft
sprocket
Engine crank angle
sensor connectorEngine crank
angle sensor
AC301752
B
AB
Ignition coil 2
<4G1>
Engine control detonation
sensor connector
Engine control
detonation sensor
AC302009
B
AB
Hydraulic unit
<4G6>
Alternator
Engine control detonation
sensor connectorEngine control
detonation sensor
AC208541
C
AE
<4G1>
Throttle body
Throttle body
throttle sensor
Inlet manifold absolute pressure sensor
(incorporating intake air temperature sensor)
AC302479
AB
C
Throttle body
<4G6>
Throttle body
throttle sensor
ENGINE AND TRANSMISSION
CONFIGURATION DIAGRAMS80-8
ENGINE AND TRANSMISSION
ENGINE AND TRANSMISSION <4G1-MPI (LHD) >M1801000400689
NOTE: On A/T only, the standard routing positions
for the corrugated tube and wiring harness are
marked by*.
AC301128
B-02
B-03B-04B-05
B-22
B-23 B-24 B-25 B-26Control wiring
harnessB-01
Connector colour
code
B : Black
BR : Brown
G : Green
GR : Gray
L : Blue
None : Milk white
O : Orange
R : Red
V : Violet
Y : Yellow*
Connector
symbol
-01
thru
-26B
Earth cable
AB
9
10
11
13
B-06B-07
B-09
B-10X
B-15X
B-16X
B-17X
B-18
Battery wiring
harness
B-19
B-20
B-21
*
B-01 (5-GR) Windshield wiper motor
B-02 (2-GR) Fuel injector 1
B-03 (2-GR) Fuel injector 2
B-04 (2-GR) Fuel injector 3
B-05 (2-GR) Fuel injector 4
B-06 (3-GR) Throttle body throttle sensor
B-07 (3-B) Vehicle speed sensor
B-09 (2-GR) Brake fluid level indicator switch
B-10X (1) Engine speed detection connector
B-15X (4) A/T control relay
B-16X (4) Engine control relay
B-17X (4) A/C compressor relay
B-18 (6-B) Control wiring harness and battery wiring
harness combination
B-19 (10-GR) A/T control solenoid valve assemblyB-20 (10-B) Inhibitor switch
B-21 (4-B) Engine control oxygen sensor (Front)
B-22 (1) Starter
B-23 (1-B) Starter
B-24 (1-B) Engine oil pressure switch
B-25 (1) Alternator
B-26 (4-GR) Alternator
ENGINE AND TRANSMISSION
CONFIGURATION DIAGRAMS80-10
ENGINE AND TRANSMISSION
<4G1-MPI (RHD) >
M1801000400690
NOTE: On A/T only, the standard routing positions
for the corrugated tube and wiring harness are
marked by*.
AC301131
B-02
B-03B-04 B-05
B-22
B-23 B-24 B-25 B-26Control wiring
harnessB-09
Connector colour
code
B : Black
BR : Brown
G : Green
GR : Gray
L : Blue
None : Milk white
O : Orange
R : Red
V : Violet
Y : Yellow*
Connector
symbol
-01
thru
-26B
Earth cable
AB
9
10
11
13
B-06B-07
B-01
B-10X
B-14X
B-15X
B-16X
B-17X
B-18
Battery wiring
harness
B-19
B-20 B-21
*
B-01 (5-GR) Windshield wiper motor
B-02 (2-GR) Fuel injector 1
B-03 (2-GR) Fuel injector 2
B-04 (2-GR) Fuel injector 3
B-05 (2-GR) Fuel injector 4
B-06 (3-GR) Throttle body throttle sensor
B-07 (3-B) Vehicle speed sensor
B-09 (2-GR) Brake fluid level indicator switch
B-10X (1) Engine speed detection connector
B-14X (4) Ignition coil relay
B-15X (4) A/T control relay
B-16X (4) Engine control relay
B-17X (4) A/C compressor relay
B-18 (6-B) Control wiring harness and battery wiring
harness combination
B-19 (10-GR) A/T control solenoid valve assemblyB-20 (10-B) Inhibitor switch
B-21 (4-B) Engine control oxygen sensor (Front)
B-22 (1) Starter
B-23 (1-B) Starter
B-24 (1-B) Engine oil pressure switch
B-25 (1) Alternator
B-26 (4-GR) Alternator
ENGINE AND TRANSMISSION
CONFIGURATION DIAGRAMS80-12
ENGINE AND TRANSMISSION
<4G6-MPI (LHD) >
M1801000400708
AC301134
B-02
B-03B-04
B-25 B-26Control wiring
harnessB-01
Connector colour
code
B : Black
BR : Brown
G : Green
GR : Gray
L : Blue
None : Milk white
O : Orange
R : Red
V : Violet
Y : YellowConnector
symbol
-01
thru
-26B
AB
910
11
13
B-06B-07
B-09
B-10X
B-16X
B-17X
B-18
Battery wiring
harness
B-21 B-22
B-23B-05B-08
B-24
Earth
cable
B-01 (5-GR) Windshield wiper motor
B-02 (2-GR) Fuel injector 1
B-03 (2-GR) Fuel injector 2
B-04 (2-GR) Fuel injector 3
B-05 (2-GR) Fuel injector 4
B-06 (4-B) Throttle body throttle sensor
B-07 (3-B) Vehicle speed sensor
B-08 (7-B) Air cleaner air flow sensor
B-09 (2-GR) Brake fluid level indicator switch
B-10X (1) Engine speed detection connectorB-16X (4) Engine control relay
B-17X (4) A/C compressor relay
B-18 (6-B) Control wiring harness and battery wiring
harness combination
B-21 (4-B) Engine control oxygen sensor (Front)
B-22 (1) Starter
B-23 (1-B) Starter
B-24 (1-B) Engine oil pressure switch
B-25 (1) Alternator
B-26 (4-GR) Alternator
ENGINE AND TRANSMISSION
CONFIGURATION DIAGRAMS80-14
ENGINE AND TRANSMISSION
<4G6-MPI (RHD) >
M1801000400719
AC301137
B-02B-03B-04
B-25 B-26Control wiring
harness
B-09
Connector colour
code
B : Black
BR : Brown
G : Green
GR : Gray
L : Blue
None : Milk white
O : Orange
R : Red
V : Violet
Y : Yellow
Connector
symbol
-01
thru
-26B
AB
910
11
13
B-05
B-07B-01
B-10X
B-14X
B-16X
B-17X
B-18
Battery wiring
harness
B-22 B-24B-06
B-08
B-23B-21
Earth
cable
B-01 (5-GR) Windshield wiper motor
B-02 (2-GR) Fuel injector 1
B-03 (2-GR) Fuel injector 2
B-04 (2-GR) Fuel injector 3
B-05 (2-GR) Fuel injector 4
B-06 (4-B) Throttle body throttle sensor
B-07 (3-B) Vehicle speed sensor
B-08 (7-B) Air cleaner air flow sensor
B-09 (2-GR) Brake fluid level indicator switch
B-10X (1) Engine speed detection connector
B-14X (4) Ignition coil relayB-16X (4) Engine control relay
B-17X (4) A/C compressor relay
B-18 (6-B) Control wiring harness and battery wiring
harness combination
B-21 (4-B) Engine control oxygen sensor (Front)
B-22 (1) Starter
B-23 (1-B) Starter
B-24 (1-B) Engine oil pressure switch
B-25 (1) Alternator
B-26 (4-GR) Alternator
CENTRALIZED JUNCTION
CIRCUIT DIAGRAMS90-10
CENTRALIZED JUNCTION
M1901000300991
FUSIBLE LINK AND FUSE
ENGINE COMPARTMENT
No. Power supply circuit Name Rated
capacity (A)Housing
colourLoad circuit
1 Battery/ Alternator
(Fusible link No.26)Fusible
link60 Yellow Fuse No.15, 16, 19, 20 (in junction
block) circuit
2 50 Red Fan controller
3 60 Yellow ABS-ECU
4 40 Green Ignition switch circuit
5 30 Pink Power window main switch and power
window sub switch
6 Fuse 15 Blue Front fog lamp, front fog lamp
indicator lamp, front fog lamp relay
and spare connector (for front fog
lamp)
7 10 Red Horn relay and horn
8 20 Yellow Air cleaner air flow sensor, camshaft
position sensor, emission solenoid
valve (EGR system), emission
solenoid valve (purge control system),
engine-A/T-ECU, engine-ECU, engine
control oxygen sensor, engine control
relay, engine crank angle sensor, fan
control relay, fuel injector, ignition coil
relay, immobilizer-ECU and throttle
body idle speed control servo
9 10 Red A/C compressor
10 15 Blue ABS-ECU, engine-A/T-ECU, high
mount stop lamp and rear combination
lamp
11 15 Blue Accessory socket
12 7.5 Brown Alternator
13 10 Red ETACS-ECU, front turn signal lamp,
rear combination lamp, side turn
signal lamp and turn signal indicator
lamp
14 20 Yellow A/T control solenoid valve assembly
and engine-A/T-ECU
15 15 Blue Fuel pump
16 Front-ECU
(Headlamp relay: HI)10 Red Headlamp (RH)
17 10 Red Headlamp (LH) and high beam
indicator lamp
18 Front-ECU
(Headlamp relay: LO)10 Red Headlamp (RH)
19 10 Red Headlamp (LH), headlamp assembly
and headlamp levelling switch