2001 SUZUKI GRAND VITARA ac fan

0A-8 GENERAL INFORMATION
Warning, Caution and Information Labels
The figure below shows main labels among others that are attached to vehicle component parts.
When servicing and handling parts, refer to WARNING/CAUTION instructions printed on labels.
If any WARNING/CAUTION label is found stained or damaged, clean or replace it as necessary.
1. Passenger seat belt label (if equipped) 5. Blank 9. Jacking instruction label
2. Radiator cap label 6. Air bag label on sun visor 10. Transfer label (if equipped)
3. Air bag label 7. Air bag label on sun visor (Back side)
Air bag label and utility vehicle label on sun visor (Face side)11. Armrest label on strap
4. Engine cooling fan label 8. Jacking instructions 12. Seat label (if equipped)
1. Air bag label on driver air bag (inflator) module 5. Air bag label on wire harness
2. Air bag label on combination switch and contact coil assembly 6. Air bag label on SDM
3. Air bag label on steering column cover 7. Pretensioner label on seat belt pretensioner
4. Air bag label on passenger air bag (inflator) module
3
7
7
56
4

1B-4 AIR CONDITIONING (OPTIONAL)
Major Components And Location
[A] : Dual A/C model 6. Receiver/dryer 13. Suction pipe 20. Ventilation air
[B] : Single A/C model 7. Front expansion valve 14. Discharge pipe 21. Rear A/C air
1. Front cooling unit 8. Heater unit 15. Recirculation air 22. Room air
2. Front A/C evaporator 9. Rear A/C unit 16. Fresh air 23. Solenoid valve
3. Front blower fan motor 10. Rear blower fan motor 17. Defroster air 24. Rear A/C evaporator
4. Compressor 11. Rear expansion valve 18. Demister air
5. Condenser assembly 12. Liquid pipe 19. Foot air
17 17
18 18
16 [A]
[B]15
21
2211
23
9
24
10 141320
21
19 19
4 12
6 312
78
17 17
18 18
16
15
20
19 19 1
2
8 5
7
12
6
513
4 14

1B-6 AIR CONDITIONING (OPTIONAL)
Diagnosis
General
Main A/C system (front A/C system)
Condition Possible Cause Correction
Cool air does not
come out (A/C system
does not operative)No refrigerant Perform recover, evacuation and
charging.
Fuse blown Check “IG METER”, “REAR DEFG”
and “A/C” fuses, and check for
short circuit to ground.
A/C switch faulty Check A/C switch.
Blower motor switch faulty Check blower motor switch.
A/C evaporator temperature sensor (A/C evap-
orator thermistor) faultyCheck A/C evaporator tempera-
ture sensor (A/C evaporator ther-
mistor).
Refrigerant (dual) pressure switch faulty Check refrigerant (dual) pressure
switch.
Wiring or grounding faulty Repair as necessary.
A/C ON permission signal in ECM faulty Check A/C ON permission signal.
A/C controller and its circuit faulty Check A/C controller and its circuit.
Cool air does not
come out (A/C com-
pressor does not
operative (won’t rota-
tive))Magnet clutch faulty Check magnet clutch.
Compressor relay faulty Check compressor thermal switch.
Compressor relay faulty Check compressor relay.
Drive belt loose or broken Adjust or replace drive belt.
Compressor faulty Check compressor.
A/C ON permission signal in ECM faulty Check A/C ON permission signal.
A/C controller faulty Check A/C controller.
Cool air does not
come out (A/C con-
denser cooling fan
motor does not opera-
tive)Condenser cooling fan motor relay faulty Check condenser cooling fan motor
relay.
Wiring or grounding faulty Repair as necessary.
A/C condenser fan motor relay signal in ECM
faultyCheck A/C condenser cooling fan
motor relay signal.
Condenser cooling fan motor faulty Check condenser cooling fan
motor.
Cool air does not
come out (Blower
motor does not opera-
tive)Fuse blown Check “FRONT BLOW” and
“REAR DEFG” fuses, and check for
short circuit to ground.
Blower motor relay faulty Check blower motor relay.
Blower motor resistor faulty Check blower motor resistor.
Blower motor switch faulty Check blower motor switch.
Wiring or grounding faulty Repair as necessary.
Blower motor faulty Check blower motor.

1B-12 AIR CONDITIONING (OPTIONAL)
Performance diagnosis table
HIGH PRESSURE GAUGE
LOW PRESSURE GAUGE
THERMOMETER AT CENTER DUCT
Condition Possible Cause Correction
Pressure high
(“A” area of high side
graph)Refrigerant overcharged Recharge.
Expansion valve frozen or clogged Check expansion valve.
Clogged refrigerant passage of high side Clean or replace.
Condenser cooling fan malfunction (Insufficient cooling
of condenser)Check condenser cooling fan.
Dirty or bent condenser fins (Insufficient cooling of con-
denser)Clean or repair.
Compressor malfunction (Insufficient oil etc.) Check compressor.
Engine overheat Check engine cooling system.
Pressure low
(“B” area of high side
graph)Insufficient refrigerant (Insufficient charge or leakage) Check for leakage, repair if necessary
and recharge.
Expansion valve malfunction (valve opens too wide) Check expansion valve.
Compressor malfunction (Insufficient compression) Check compressor.
Condition Possible Cause Correction
Pressure high
(“C” area of low side
graph)Expansion valve malfunction (valve opens too wide) Check expansion valve.
Compressor malfunction (Insufficient compression) Check compressor.
Pressure low
(“D” area of low side
graph)Insufficient refrigerant (Insufficient charge or leakage) Check for leakage, repair if necessary
and recharge.
Expansion valve malfunction (valve opens too narrow) Check expansion valve.
Clogged refrigerant passage (crashed pipe) Repair or replace.
Condition Possible Cause Correction
Outlet air temperature at
center duct is high
(Crossing point is in area
“E”)Insufficient or excessive charge of refrigerant Check refrigerant pressure.
Dirty or bent A/C evaporator fins Clean or repair.
Air leakage from cooling (heater) unit or air duct Repair or replace.
Malfunctioning, switch over function of damper in cool-
ing (heater) unitRepair or replace.
Compressor malfunction Check compressor.
Outlet air temperature at
center duct is low
(Crossing point is in area
“F”)Insufficient air volume from center duct (Heater blower
malfunction)Check blower motor and fan.
Compressor malfunction Check compressor.
NOTE:
If ambient temperature is within 30 - 35 °C (85 - 95 °F), it is possible to do using “DETAIL DIAGNOSIS
TABLE” in this section for detail diagnosis.

AIR CONDITIONING (OPTIONAL) 1B-13
Detail diagnosis table (at ambient temperature within 30 - 35 °C (85 - 95 °F))
Condition Possible Cause Correction
MANIFOLD
GAUGEMPa
(kg/cm
2)
(psi)Detail
Lo Hi
0.23 - 0.35
(2.3 - 3.5)
(33 - 50)1.4 - 1.75
(14 - 17.5)
(200 - 249)Normal condition––
Negative
pressure0.5 - 0.6
(5 - 6)
(71.2 - 85.3)The low pressure side
reads a negative pressure,
and the high pressure side
reads an extremely low
pressure.
Presence of frost around
tubing to and from receiver/
dryer and expansion valve.Dust particles or water drop-
lets are either stuck or frozen
inside expansion valve, pre-
venting the refrigerant from
flowing.Clean expansion valve.
Replace it if it cannot be
cleaned.
Replace condenser/dryer.
Evacuate the A/C system and
recharge with fresh refriger-
ant.
Normal :
0.23 - 0.35
(2.3 - 3.5)
(33 - 50)
↑ ↓
↑ ↓↑ ↓ ↑ ↓
Abnormal :
Negative
pressureNormal :
1.4 - 1.75
(14 - 17.5)
(200 - 249)
↑ ↓
↑ ↓↑ ↓ ↑ ↓
Abnormal :
0.7 - 1.0
(7 - 10)
(100 - 142)During A/C operation, the
low pressure side some-
times indicates negative
pressure, and sometimes
normal pressure. Also high
pressure side reading fluc-
tuates between the abnor-
mal and normal pressure.Expansion valve is frozen due
to moisture in the system, and
temporarily shuts off the
refrigeration cycle.Replace expansion valve.
Replace condenser/dryer.
Evacuate A/C system and
recharge with fresh refriger-
ant.
0.05 - 0.15
(0.5 - 1.5)
(4.2 - 21.3)0.7 - 1.0
(7 - 10)
(100 - 142)Both low and high pressure
sides indicate low readings.
Continuous air bubbles are
visible through sight glass.
Output air is slightly cold.Insufficient refrigerant in sys-
tem. (Refrigerant leaking)Using a gas leak detector,
check for leaks and repair as
necessary.
Recharge refrigerant to a
specified amount.
If the pressure reading is
almost 0 when the manifold
gauges are attached, check
for any leaks, repair them,
and evacuate the system.
0.4 - 0.6
(4 - 6)
(56.9 - 85.3)Pressure on low pressure
side is high.
Pressure on high pressure
side is low.
Both pressure becoming
equal right after A/C is
turned OFF.Internal leak in compressor Inspect compressor and
repair or replace as neces-
sary.
0.35 - 0.45
(3.5 - 4.5)
(50 - 64)2.0 - 2.5
(20 - 25)
(285 - 355)High pressure reading on
both low and high pressure
sides.
Air bubbles are not visible
even when engine rpm is
lowered.Overcharged A/C system.
Faulty condenser cooling
operation.
Faulty condenser fan opera-
tion.Adjust refrigerant to specified
amount.
Clean condenser.
Inspect and repair condenser
fan.
High pressure reading on
both low and high pressure
sides.
Low pressure side tubing is
not cold when touched.
Air bubbles are visible
through sight glass.Presence of air in A/C sys-
tem. (Improperly evacuated)Replace condenser dryer.
Inspect quantity of compres-
sor oil and presence of con-
taminants in oil.
Evacuate system and
recharge with fresh refriger-
ant.
0.45 - 0.55
(4.5 - 5.5)
(64 - 78)High pressure reading on
both low and high pressure
sides.
Large amount of frost or
dew on the low pressure
side tubing.Faulty expansion valve.
Refrigerant flow is not regu-
lated properly.Replace expansion valve.

1B-14 AIR CONDITIONING (OPTIONAL)
Wiring Circuit
ACG
LT GRN
PNK
PNK
BLKORN
BLK
YEL/GRNRED/BLKBLK/WHT
BLU/WHTPNK/BLK
PNK/GRN
RED/BLK
WHT/RED
YEL/GRN
YEL/BLU
A/C
RED/BLU
RED/BLU
RED/BLKBLK
BLU/ORN
BLU/WHT
BLU/WHT
PNK
PNK/BLU
BLK
PNK/WHT
YEL/BLK
GRY/WHT
GRN/BLK
BLK/WHT
RED/BLK
YEL/GRN
BLK
BLK
BLK
YEL/BLK
YEL/GRN
YEL/GRNBLU/GRN
BLU/YELBLUBLU/BLK
BLU/BLK
17
21
22 18
16
15
19
2026 25 24 23
14
12
29
3
4
7
33 30
31
32
28
27
1213
10
11
35 349
856
A
1. Front blower motor main relay 10. Compressor relay 19. Battery 28. Solenoid valve relay
2. Front blower motor 11. Compressor 20. Generator 29. Rear blower motor relay
3. Front blower motor resistor 12. Condenser cooling fan motor
relay21. Ignition main fuse 60 A 30. Rear blower motor resistor
4. Front blower motor switch 13. Condenser cooling fan motor 22. Heater/A/C main fuse 60 A 31. Rear blower motor
5. A/C controller 14. Fuse box 23.“IG METER” fuse 20 A 32. Rear blower motor switch
6. ECM (PCM) 15.“A/C” fuse 25 A 24.“REAR DEFG” fuse 25 A 33. Rear A/C main switch
7. Heater mode control switch 16. Ignition switch 25.“REAR BLOW” fuse 20A 34. Rear A/C evaporator temperature con-
troller
8. Dual (refrigerant) pressure switch 17. Main fuse box 26.“FRONT BLOW” fuse 30A 35. Rear A/C evaporator temperature sensor
9. A/C evaporator thermistor
(A/C evaporator temperature sensor)18. Battery main fuse 100 A 27. Solenoid valve [A] : Rear A/C wiring circuit (if equipped)

1B-16 AIR CONDITIONING (OPTIONAL)
SYSTEM CIRCUIT
Terminal arrangement of A/C controller
Terminal arrangement of ECM
A: To “FRONT BLOW” fuse 1. Front blower motor relay 6. Dual (refrigerant) pressure switch 11. Condenser cooling fan motor
B: To “REAR DEFG” fuse 2. Front blower motor 7. A/C thermistor (evaporator temperature sensor) 12. A/C controller
C: To “IG METER” fuse 3. Front blower motor resistor 8. Compressor relay 13. ECM
D: To “A/C” fuse 4. Front blower motor switch 9. Compressor
5. A/C switch 10. Condenser cooling fan motor relay
5V
12V12V
12V5V
12V
5V
AC-A-1
AC-A-7
AC-A-4
AC-B-2
AC-B-1
AC-A-16AC-A-9
AC-A-2 AC-A-13
E61-8
E61-17
E61-22
A
DBBC
1
2
3
4
7 865
1011912
13
12 12
3
45 6 7 8 9 101112131415 16 AC-B
AC-A
87
22 23
34
3565
16 17
25
262
1
8 9
20
212
1
8 9
21
22 1 2 3 4 5 6
9
24 25 26 27 28 29 30 31 32 3310 11
12 13 14 15 16 17 18 19 20 211 2 3 4
7 8 9
10 11 12 13 14 15
18 19 20 21 22 23 243 4 5 6 7
10 11 12 13 14 15 16 17 18 19
22 23 24 25 26
27 283 4 5 6 7
10 11 12 13 14 15 16 19 18 2017
23
24 25 26 27 29 28 30 E61 C51-3 C51-1 C51-2

AIR CONDITIONING (OPTIONAL) 1B-17
A/C CONTROLLER VOLTAGE VALUES TABLE
Terminal Wire CircuitMeasurement
groundNormal value Condition
AC-A-1BLK/
WHTController main
power supplyGround to
engine (Fig B)10 – 14 VIgnition switch ON with engine
stopped
AC-A-2BLK/
YELController main
groundGround to body
(Fig A)–0.4 – 0 V Engine running
AC-A-4 ORNRefrigerant
(dual) pressure
switch inputGround to
engine (Fig B)0 – 1 VRefrigerant pressure within 225
kpa (2.3 kg/cm
2, 32.7 psi) to
2548 kpa (26 kg/cm
2, 370 psi)
with engine running
10 – 14 VRefrigerant pressure below 196
kpa (2.0 kg/cm
2, 28 psi) or above
3140 kpa (32 kg/cm
2, 455 psi)
with engine running
AC-A-7GRN/
BLKA/C switch and/
or defroster
switch inputGround to
engine (Fig B)8 – 14 VBlower fan motor switch or A/C or
defroster switch OFF with engine
running
0 – 1.5 VBlower fan motor switch and A/C
or defroster switch ON with
engine running
AC-A-9GRY/
WHTSignal input from
ECM (A/C ON
permission sig-
nal)Ground to
engine (Fig B)10 – 14 V Approve of A/C ON
0 – 1 V A/C ON forbid
AC-A-13YEL/
BLKSignal output to
ECM (A/C ON
request signal)Ground to
engine (Fig B)0 – 1.5 VBlower fan motor switch and A/C
or defroster switch ON with
engine running at A/C evaporator
temperature sensor temperature
input more than approx. 2.5 °C
(less than 2.5 V (5840 Ω)) and
refrigerant pressure switch is ON
10 – 14 VExcept the above-mentioned with
engine running
AC-A-16 PNKCompressor
magnet clutch
relay outputGround to
engine (Fig B)0 – 1 VBlower fan motor switch and A/C
or defroster switch ON with
engine running at A/C evaporator
temperature sensor temperature
input more than approx. 2.5 °C
(less than 2.5 V (5840 Ω)), refrig-
erant pressure switch ON and
signal input from ECM ON
10 – 14 VExcept the above-mentioned with
engine running
AC-B-1BLU/
YELSensor groundGround to body
(Fig A)–0.4 – 0 V Engine running