1999 SUZUKI GRAND VITARA Owners Manual

1B-32 AIR CONDITIONING (OPTIONAL)
Solenoid Valve
REMOVAL
1) Remove rear A/C unit referring to “REAR A/C UNIT” in this
section.
2) Disconnect solenoid valve connector (1).
3) Loosen solenoid valve flared nuts (2).
4) Remove solenoid valve bracket mounting screws (3), and
then remove rear liquid pipe (4) and rear suction pipe (5)
from rear expansion valve.
5) Remove rear liquid pipe (4), rear suction pipe (5) and sole-
noid valve bracket (6) from solenoid valve (7).
INSPECTION
1) Connect special tool to solenoid valve (1).
Special tool
(A) : 09917-47910
2) Check that solenoid valve is closed when vacuum is applied
to solenoid valve.
If solenoid valve is opened, replace solenoid valve.
3) Check that solenoid valve (1) is opened when connect bat-
tery to solenoid valve as shown in figure.
INSTALLATION
Reverse removal procedure to install solenoid valve.NOTE:
Cap open fitting immediately to keep moisture out of sys-
tem.
2
5
367 1 3 4
1(A)
NOTE:
Solenoid valve terminal is no polarity.
1

AIR CONDITIONING (OPTIONAL) 1B-33
Rear Blower Motor Assembly
REMOVAL
1) Remove solenoid valve referring to “SOLENOID VALVE” in
this section.
2) Disconnect rear blower motor coupler (1).
3) Remove rear blower motor assembly (2) from rear A/C unit
(3).
INSPECTION
1) Check continuity between two terminal as shown.
If check results are no continuity, replace rear blower motor
assembly (1).
2) Check operate and current.
a) Fix rear blower motor assembly (1) by using vise.
b) Connect battery to rear blower motor assembly (1) as
shown.
c) Check that there is smoothly operates and no noise.
d) Check that ammeter indicates specified current.
If measure current is incorrect, replace blower motor
assembly.
Rear blower fan motor specified current at 12V
: 16 A maximum
INSTALLATION
Reverse removal procedure for installation.
2
3
1

1B-34 AIR CONDITIONING (OPTIONAL)
Rear Blower Motor Relay and Solenoid Valve
Relay
INSPECTION
1) Disconnect negative (–) cable at battery.
2) Remove rear blower motor relay (1) and/or solenoid valve
relay (2) from vehicle.
3) Check that there is no continuity between terminal “c” and
“d”. If there is continuity, replace relay.
4) Connect battery positive (+) terminal to terminal “a” of relay.
5) Connect battery negative (–) terminal “b” of relay.
6) Check continuity between terminal “c” and “d”.
If there is no continuity when relay is connected to the bat-
tery, replace relay.
Rear A/C Main Switch
REMOVAL
1) Remove rear console box (1).
2) Remove front console box mounting screws (2) and clips (3).
3) Disconnect console box wire coupler.
4) Remove rear console box (4).
5) Disconnect rear A/C main switch connector.
6) Remove A/C main switch (5) from front console box (4).
2
1
2
4
3
15
2
3

AIR CONDITIONING (OPTIONAL) 1B-35
INSPECTION
Check rear A/C main switch for each terminal-to-terminal
continuity.
If check results are not specified, replace rear A/C main
switch.
INSTALLATION
Reverse removal procedure for installation.
Rear Blower Motor Resistor
REMOVAL
1) Remove rear A/C unit referring to “REAR A/C UNIT” in this
section.
2) Disconnect rear blower motor resistor connector (1).
3) Remove rear blower motor resistor (2) from rear A/C unit (3).
INSPECTION
Measure each terminal-to-terminal resistance.
If measured resistance is incorrect, replace rear blower motor
resistor (1).
Rear blower motor resister resistance
Mo-L : Approx. 2.4
Ω
ΩΩ Ω
Mo-ML : Approx. 1.2
Ω
ΩΩ Ω
Mo-MH : Approx. 0.6
Ω
ΩΩ Ω
INSTALLATION
Reverse removal procedure to install rear blower motor resistor.
TERMINAL
POSITION
ON
OFFabcde
1
2
3
Mo
L
MH
1ML

1B-36 AIR CONDITIONING (OPTIONAL)
Rear Blower Motor Switch
INSPECTION
Check rear blower motor switch for each terminal-to-terminal
continuity.
If check results are not specified, replace rear blower motor
switch.
Check rear blower motor switch bulb come ON when con-
nect battery positive (+) cable to terminal “c” and battery
negative (–) cable to terminal “f”.
If A/C blower fan switch bulb does not come ON, replace it.
1. Rear blower motor switch 5. Rear A/C air louver holder
Install proper direction as shown in figure
2. Bulb 6. Rear A/C air louver
3. Bracket 7. Knob
4. Rear A/C air louver case
2
13
4
66
7
55
ab
f e
dc
TERMINAL
POSITION
Low
Middle
Highabde
OFF

AIR CONDITIONING (OPTIONAL) 1B-37
Rear A/C No.1 and No.2 Duct
Rear A/C No.1 duct
REMOVAL
1) Remove rear A/C unit referring to “REAR A/C UNIT” in this
section.
2) Remove rear A/C No.1 duct (1).
INSTALLATION
Reverse removal procedure to install rear A/C No.1 duct (1).
Rear A/C No.2 duct
CAUTION:
Never remove rear A/C No.2 duct (2) from head lining.
Performing this prohibited service will break head lining.
1
2

1B-38 AIR CONDITIONING (OPTIONAL)
Compressor Assembly
INSPECTION
1) Install manifold gauge set (1) as shown in the figure.
2) Close Hi (4) and Lo (5) side valves.
3) Run engine at fast idle.
4) Check compressor for the following items.
If any of the above checks indicated a defect, repair com-
pressor.
High pressure gauge reading is not low and low pressure
gauge reading is not higher than normal.
Metallic sound.
Leakage from compressor. CAUTION:
None of refrigerant, compressor oil and component parts is interchangeable between two types of
A/C: one using CFC-12 (R-12) and the other using HFC-134a (R-134a).
For identification between these two types, refer to page 66.
When replenishing or changing refrigerant and compressor oil and when replacing parts, make sure
that the material or the part to be used is appropriate to the A/C installed in the vehicle being serviced.
Use of incorrect refrigerant or compressor oil will result in leakage of refrigerant, damage in parts or
other faulty condition.
When servicing the compressor, keep dirt or foreign material away from getting on or into the com-
pressor parts and system. Clean tools and a clean work area are important for proper service.
The compressor connection and the outside of the compressor should be cleaned before any “On-
vehicle” repair or before removal of the compressor. The parts must be kept clean at all times and any
parts to be reassembled should be cleaned with Trichloromethane, naphtha, kerosene or equivalent
solvent and dried with dry air. Use only lint free cloths to wipe parts.
The operations described are based on bench overhaul with compressor removed from the vehicle,
except as noted. They have been prepared in order of accessibility of the components.
When compressor is removed from the vehicle for servicing, the oil remaining in the compressor
should be discarded and new refrigerant oil added to the compressor.
Minor repair procedures may be done on the vehicle without discharging the system. Major repair pro-
cedures require that the system be discharged of refrigerant.
2. High pressure side (Delivery side hose)
3. Low pressure side (Suction side pipe)
1
4 5
2
3

AIR CONDITIONING (OPTIONAL) 1B-39
REMOVAL
1) Run engine at idle with A/C ON for 10 minutes.
2) Disconnect negative (–) cable at battery.
3) Recover refrigerant from refrigeration system using recovery
and recycling equipment.
4) Remove P/S pump referring to step 4) to 7) of “REMOVAL”
under “P/S PUMP” in Section 3B1.
5) Disconnect magnet clutch connector.
6) Disconnect suction hose (1) and discharge hose (2) from
compressor.
7) Remove compressor (1) from its mount (2).NOTE:
The amount of compressor oil at removed must be mea-
sured and the same amount must be poured when install-
ing the compressor.
NOTE:
It is not necessary to drain P/S fluid.
NOTE:
Cap open fitting immediately to keep moisture out of sys-
tem.
2
1
NOTE:
If compressor assembly is replaced. Drain oil from com-
pressor, and measure its amount.
1 2