STEERING -On-vehicle Service37A-10
9. If the level changes more than 5 mm, the air is badly
bled. So, bleed air again.
Caution
(1) If the fluid level rises suddenly after the engine
is stopped, the bleeding is incomplete.
(2) Incomplete bleeding causes abnormal noises
from the pump and the flow-control valve. This
could lessen the life of the pump and the other
parts.
OIL PUMP PRESSURE TEST
1. Disconnect the pressure hose from the oil pump, and
then connect the special tools.
2. Bleed the air, and then turn the steering wheel several
times while the vehicle is not moving so that the
temperature of the fluid rises to approximately 50 - 60_C.
3. Start the engine and idle it at 1,000±100 r/min.
4. Fully close the shut-off valve of the pressure gauge and
measure the oil pump relief pressure to confirm that it
is within the standard value range.
Standard value: 8.4 - 9.0 MPa
5. If the standard value is not met, the oil pump is defective.
So, replace the oil pump. Then, measure oil pressure
again.
6. With the pressure gauge shut - off valve fully open, check
the hydraulic pressure in unladen condition.
Standard value: 0.2 - 0.8 MPa
7. If the standard value is not met, the oil line or steering
gear is probably defective. So, repair and measure oil
pressure again.
8. Turn the steering wheel fully either left or right and check
the retention hydraulic pressure.
Standard value: 8.4 - 9.0 MPa
9. If the pressure is below the standard value, disassemble
and reassemble the steering gear. If above, replace the
oil pump. Then, measure oil pressure again.
10. Remove the special tools, and tighten the pressure hose
to the specified torque.
Tightening torque: 18±3 N·m
11. Bleed the system.
Fluid level change: Within 5 mm
While engine
runningWhile engine
stopped
Temperature
gaugePressure
gauge
(MB990662)Shut-off valve
Oil
pumpOil reservoir
Adapter
(MB990994)
Adapter
(MB990993)
55-1
HEATER, AIR
CONDITIONER AND
VENTILATION
CONTENTS
SERVICE SPECIFICATIONS 2.................
LUBRICANTS 2..............................
SPECIAL TOOLS 2...........................
TROUBLESHOOTING 3.......................
ON-VEHICLE SERVICE 14....................
Refrigerant Level Test through Performance Test 14.
Magnetic Clutch Test 14.........................
Receiver Drier Test 14..........................
Compressor Drive Belt Adjustment 15.............
Dual Pressure Switch Check 15..................
Charging 16...................................
Correcting Low Refrigerant Level in case the Service
can used 18...................................
Discharging System 19..........................
Refilling of Oil in the A/C System 19...............
Performance Test 20............................
Refrigerant Leak Repair 21......................
Blower Relay Continuity Check 22................
A/C Compressor Relay Continuity Check 22........Condenser Fan Relay (LO) Check 23.............
Condenser Fan Relay (HI) Check 23..............
Idle-up Operation Check 24.....................
HEATER CONTROL ASSEMBLY (A/C-ECU)
AND A/C SWITCH 25........................
HEATER UNIT AND BLOWER ASSEMBLY 28.
REGISTOR, BLOWER MOTOR AND
INSIDE/OUTSIDE AIR CHANGE OVER
DAMPER MOTOR 32.........................
EVAPORATOR AND AIR THERMO SENSOR
34 ...........................................
COMPRESSOR 36............................
CONDENSER ASSEMBLY AND CONDENSER
FAN ASSEMBLY 40...........................
REFRIGERANT LINES 42.....................
DUCTS 44...................................
VENTILATION 45.............................
ServiceSpecifications/Lubricants/
Special ToolsHEATER, AIR CONDITIONER AND VENTILATION-55-2
SERVICE SPECIFICATIONS
ItemStandard value
Idlid()NP85050Idlingspeed(rpm):NorPrange850±50Idlingspeed(rpm):NorPrange850±50Idlingspeed(rpm):NorPrange850 r50
Idle-up speed (rpm): N or P range850±50
Register resistance (for blower motor)ΩHI - LO (between terminals 1 and 3)2.54g()
HI - ML (between terminals 1 and 6)1.24
HI - MH (between terminals 1 and 4)0.6
Air conditioner compressor air gap mm0.3 – 0.5
Refrigerant temperature switch operating temperature (_C)ContinuitySlightly below 150gppgp()
No continuity150 or higher (until tempera-
ture falls to 120 when OFF)
NOTE* : When disconnected the compressor connector at A/C ON
LUBRICANTS
ItemsSpecified lubricantsQuantity
Compressor oil mLSUN PAG 56130±10
Pipe couplingSUN PAG 56As required
Refrigerant (g)R134a (HFC-134a)550±20
SPECIAL TOOLS
ToolNumberNameUse
MB991367Special spannerFor use on the air conditioner compressor
armature locknut
MB991386Pin
MB991529Diagnosis code
check harnessFor inspecting the air conditioner using a
voltmeter
HEATER, AIR CONDITIONER AND VENTILATION–On-vehicle Service55-24
IDLE-UP OPERATION CHECK
1. Set the vehicle in the pre-inspection condition:
Engine coolant temperature: 80 – 90_C
Lamps, electric cooling fan and all accessories: OFF
2. Check that the idle speed is within the standard value.
Standard value: 850±50 r/min
NOTE
The idle speed is controlled by the ISC system and should
not be adjusted.
3. The idle speed should be within the standard value when
the A/C switch is turned on and the A/C is operating.
Standard value:
850±50 r/min
