engine SUZUKI GRAND VITARA 2001 2.G Owner's Manual

AIR CONDITIONING (OPTIONAL) 1B-27
Replenishing compressor oil
When replacing air conditioning parts with new ones, it is neces-
sary to replenish oil by the amount supposedly remaining in each
part.
WHEN CHANGING GAS ONLY
When it is unavoidable to change gas without replacing any com-
ponent part for engine removal and installation or for some other
reason, replenish 20 cm
3 (20cc) oil. When replenishing gas only,
oil replenishment is not necessary.
WHEN REPLACING COMPRESSOR
Compressor oil is sealed in each new compressor by the amount
required for air conditioner cycle. Therefore, when using a new
compressor for replacement, drain oil from it by the amount calcu-
lated as follows.
“C” = “A” – “B”
“C” : Amount of oil to be drained
“A” : Amount of oil sealed in a new compressor
“B” : Amount of oil remaining in removed compressor
Amount of oil in new compressor :
Dual A/C model 140 cm
3 (140 cc)
Single A/C model 100 cm
3 (100 cc)
WHEN REPLACING OTHER PART
Amount of compressor oil : CAUTION:
Be sure to use HFC-134a (R-134a) compressor oil.
NOTE:
Compressor assembly supplied from factory is filled up
with the following amount of oil.
Replaced part Amount of compressor oil
to be replenished
Evaporator
25 cm
3 (25 cc)
Rear evaporator
(for dual A/C model)25 cm
3 (25 cc)
Condenser
15 cm
3 (15 cc)
Receiver/dryer
20 cm
3 (20 cc)
Hoses
10 cm
3 (10 cc) each
Pipes
10 cm
3 (10 cc) each
1. New compressor
2. Removed compressor
3. Excess oil (A–B)

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

POWER STEERING (P/S) SYSTEM 3B1-3
Hydraulic Pressure in P/S Circuit
Hydraulic pressure check
1) After cleaning joint of high pressure hose and P/S pump
thoroughly, disconnect hose from pump and install special
tool (oil pressure gauge, attachment and hose).
Special tool
(A) : 09915-77410
(B) : 09915-77420
2) Check each connection for fluid leakage and bleed air.
Refer to “AIR BLEEDING PROCEDURE” in this section.
3) With engine idling, turn steering wheel and warm up engine
till temperature of fluid in P/S fluid reservoir rises to 50 –
60°C (122 – 140°F).
4) Check back pressure by measuring hydraulic pressure with
engine idling and hands off steering wheel.
When back pressure is higher than specified values, check
control valve and piping for clogging.
Back pressure :
Lower than 1000 kPa (10 kg/cm
2, 142 psi) CAUTION:
Take care not to cause damage to A/C condenser during
service operation, if equipped.
1. P/S fluid reservoir
2. Attachment
3. Gasket
4. Union bolt
5. High pressure side
6. Low pressure side
1. P/S fluid reservoir 4. P/S gear box
2. Gauge valve (open) 5. High pressure side
3. P/S pump 6. Low pressure side

3B1-4 POWER STEERING (P/S) SYSTEM
5) Check relief pressure.
a) Increase engine speed to about 1500 r/min (rpm). Close
gauge valve gradually while watching pressure increase
indicated by gauge and take reading of relief pressure
(maximum hydraulic pressure).
When it is higher than specified values, possible cause is
malfunction of relief valve.
When it is lower than specified values, possible cause is
either failure of P/S pump or settling of relief valve spring.
Relief pressure (when gauge valve is closed) :
7650 – 8350 kPa (76.5 – 83.5 kg/cm
2, 1088 – 1187 psi)
b) Next, open gauge valve fully and increase engine speed to
about 1500 r/min (rpm). Then turn steering wheel to the left
or right fully and take reading of relief pressure.
When it is higher than specified values, possible cause is
malfunction of relief valve.
When it is lower than specified values, possible cause is
failure in steering gear box. Replace gear box.
Relief pressure (when gauge valve is opened) :
7650– 8350 kPa (76.5 – 83.5 kg/cm
2, 1088 – 1187 psi) CAUTION:
Be sure not to close gauge valve for longer than 10 sec-
onds.
1. P/S fluid reservoir
2. Gauge valve (shut)
3. Oil pressure gauge
4. P/S pump
5. P/S gear box
CAUTION:
Be sure not to hold steering wheel at fully turned position
for longer than 10 seconds.
1. P/S fluid reservoir
2. Gauge valve (open)
3. Oil pressure gauge
4. P/S pump
5. P/S gear box

5-2 BRAKES
Diagnosis
Diagnosis Table
For the item not found in this column, refer to the same item of the same section in the service manual men-
tioned in the FOREWORD of this manual.
Condition Possible Cause Correction
Brake warning light
turns on after engine
startParking brake applied Release parking brake and check
that brake warning light turns off.
Insufficient amount of brake fluid Add brake fluid.
Brake fluid leaking from brake line Investigate leaky point, correct it
and add brake fluid.
Brake warning light circuit faulty Repair circuit.
Malfunctioning EBD system Check system referring to “DIAG-
NOSIS” of Section 5E2.
ABS warning light
does not turn on for 2
– 3 sec. after ignition
switch has turned ON.Bulb burnt out Replace bulb.
ABS warning light circuit open (including check
relay)Check system referring to “DIAG-
NOSIS” in Section 5E2.
ABS warning light
remains on after igni-
tion switch has turned
on for 2 – 3 sec.Malfunctioning ABS Check system referring to “DIAG-
NOSIS” in Section 5E2.

ANTILOCK BRAKE SYSTEM (ABS) 5E2-19
Table-E EBD Warning Lamp (Brake Warning Lamp) Check – Lamp Comes
“ON” Steady
CIRCUIT DESCRIPTION
EBD warning lamp (brake warning lamp) is controlled by parking brake switch, brake fluid level switch and ABS
control module/hydraulic unit assembly through lamp driver module in combination meter. Refer to “TABLE – A”
for circuit diagram.
INSPECTION
Step Action Yes No
1 1) Make sure that :
Parking brake is completely released.
Brake fluid level is upper than the minimum
level.
Are the check results OK?Go to Step 2. Release parking brake
completely and/or replen-
ish brake fluid.
2Does “ABS” warning lamp come on? Perform “TABLE – B” pre-
viously outlined.Go to Step 3.
3 1) Disconnect ABS hydraulic unit/control mod-
ule connector.
2) Check for proper connection to ABS
hydraulic unit/control module connector at
terminals “E136-10”.
3) If OK, apply chocks to wheels and select
gear in neutral position (P range for A/T).
4) Keep brake pedal depressed and start
engine.
Release parking brake.
5) Connect terminal “E136-10” of discon-
nected connector to ground using service
wire.
Does EBD warning lamp (brake warning lamp)
turn off?Substitute a known-good
ABS hydraulic unit/con-
trol module assembly and
recheck.“BRN” circuit open.
If wire and connection are
OK, replace combination
meter.

ANTILOCK BRAKE SYSTEM (ABS) 5E2-25
DTC C1057 (DTC 57) – Power Source Circuit
DESCRIPTION
The ABS control module monitors the power source voltage at terminal “E136-18”. When the power source volt-
age becomes extremely high or low, this DTC will be set. As soon as the voltage rises or lowers to the specified
level, the set DTC will be cleared.
INSPECTION
1. Ignition switch 3. ABS hydraulic unit/control module assembly
2. Main fuse 4. ABS hydraulic unit/control module connector
Step Action Yes No
1 1) Connect a voltmeter between battery posi-
tive (+) terminal and body ground.
2) Start the engine and measure the maximum
voltage when racing the engine.
Is it over 18V?Check charging system
referring to “CHARGING
SYSTEM” section.Go to Step 2.
2 1) Disconnect ABS hydraulic unit/control mod-
ule connector.
2) Keep the engine idling, measure the voltage
between terminal “E136-18” of ABS control
module and body ground.
Is it always under 9V?Check charging system
referring to “CHARGING
SYSTEM” section.
Imperfect short between
wire “GRN/ORN” and
ground.Poor connection of termi-
nal “E136-18” or “E136-
24” of the ABS control
module.
If the above are in good
condition, substitute a
known-good ABS hydrau-
lic unit/control module and
recheck.

ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE) 6-1-1
6-1
SECTION 6-1
ENGINE GENERAL INFORMATION AND
DIAGNOSIS (H27 ENGINE)
CONTENTS
General Information ...................................... 6-1-3
Statement of Cleanliness and Care ............ 6-1-3
General Information on Engine Service ...... 6-1-3
Precaution on Fuel System Service ............ 6-1-4
Fuel Pressure Relief Procedure .................. 6-1-5
Fuel Leakage Check Procedure .................. 6-1-5
Engine Diagnosis .......................................... 6-1-6
General Description .................................... 6-1-6
On-Board Diagnostic System (Vehicle
without Monitor Connector) ......................... 6-1-6
On-Board Diagnostic System (Vehicle with
Monitor Connector) ..................................... 6-1-9
Precaution in Diagnosing Trouble ............. 6-1-10
Engine Diagnostic Flow Table ................... 6-1-11
Malfunction Indicator Lamp (MIL) Check... 6-1-16
Diagnostic Trouble Code (DTC) Check ..... 6-1-16
Diagnostic Trouble Code (DTC) Clearance 6-1-17
Diagnostic Trouble Code (DTC) Table ...... 6-1-18For A/T system (Refer to Section 7B1
for diagnosis)......................................... 6-1-21
For immobilizer control system (Refer to
Section 8G for diagnosis) ...................... 6-1-22
Fail-Safe Table.......................................... 6-1-23
Scan Tool Data ......................................... 6-1-24
Scan tool data definitions ...................... 6-1-27
Engine Diagnosis Table ............................ 6-1-31
Inspection of PCM (ECM) and its Circuits. 6-1-36
Table A-1 Malfunction Indicator Lamp
Circuit Check – Lamp Does Not Come
“ON” or Dims at Ignition Switch ON
(But Engine at Stop).................................. 6-1-43
Table A-2 Malfunction Indicator Lamp
Circuit Check – Lamp Remains “ON” after
Engine Starts ............................................ 6-1-44
Table A-3 Malfunction Indicator Lamp
Check – MIL Flashes at Ignition Switch
ON (Vehicle with Monitor Connector) ....... 6-1-45 WARNING:
For vehicles equipped with Supplemental Restraint (Air Bag) System:
Service on and around the air bag system components or wiring must be performed only by an
authorized SUZUKI dealer. Refer to “Air Bag System Components and Wiring Location View” under
“General Description” in air bag system section in order to confirm whether you are performing ser-
vice on or near the air bag system components or wiring. Please observe all WARNINGS and “Ser-
vice Precautions” under “On-Vehicle Service” in air bag system section before performing service
on or around the air bag system components or wiring. Failure to follow WARNINGS could result in
unintentional activation of the system or could render the system inoperative. Either of these two
conditions may result in severe injury.
Technical service work must be started at least 90 seconds after the ignition switch is turned to the
“LOCK” position and the negative cable is disconnected from the battery. Otherwise, the system
may be activated by reserve energy in the Sensing and Diagnostic Module (SDM).
NOTE:
Whether following systems (parts) are used in the particular vehicle or not depends on specifications.
Be sure to bear this in mind when performing service work.
Monitor connector
CKP sensor
MAP sensor
EGR valve
Heated oxygen sensor or CO adjusting resistor
Three way catalytic converter, Warm-up three way catalytic converter

6-1-2 ENGINE GENERAL INFORMATION AND DIAGNOSIS (H27 ENGINE)
Table A-4 Malfunction Indicator Lamp
Check – MIL Does Not Flash or Just
Remains ON Even with Grounding
Diagnosis Switch Terminal (Vehicle with
Monitor Connector) ................................... 6-1-45
Table A-5 ECM (PCM) Power and Ground
Circuit Check – MIL Doesn’t Light at
Ignition Switch ON and Engine Doesn’t
Start Though It Is Cranked Up .................. 6-1-46
DTC P0100 (DTC No.33, 34) Mass Air
Flow Circuit Malfunction ............................ 6-1-48
DTC P0110 (DTC No.23, 25) Intake Air
Temp. (IAT) Circuit Malfunction ................ 6-1-50
DTC P0115 (DTC No.14, 15) Engine
Coolant Temp. Circuit Malfunction ............ 6-1-52
DTC P0120 (DTC No.21, 22) Throttle
Position Circuit Malfunction....................... 6-1-54
DTC P0121 Throttle Position Circuit
Range/Performance Problem ................... 6-1-56
DTC P0130 (DTC No.13) HO2S-1 (Bank 1)
Circuit Malfunction or No Activity
Detected.................................................... 6-1-58
DTC P0133 HO2S-1 (Bank 1) Circuit Slow
Response .................................................. 6-1-60
DTC P0135 HO2S-1 (Bank 1) Heater
Circuit Malfunction .................................... 6-1-61
DTC P0136 HO2S-2 (Bank 1) Circuit
Malfunction................................................ 6-1-63
DTC P0141 HO2S-2 (Bank 1) Heater
Circuit Malfunction .................................... 6-1-65
DTC P0150 (DTC No.26) HO2S-1 (Bank 2)
Circuit Malfunction or No Activity
Detected.................................................... 6-1-67
DTC P0153 HO2S-1 (Bank 2) Circuit Slow
Response .................................................. 6-1-69
DTC P0155 HO2S-1 (Bank 2) Heater
Circuit Malfunction .................................... 6-1-70
DTC P0156 HO2S-2 (Bank 2) Circuit
Malfunction................................................ 6-1-72
DTC P0161 HO2S-2 (Bank 2) Heater
Circuit Malfunction .................................... 6-1-74
DTC P0171/P0172 Fuel System Too
Lean/Rich (Bank 1) ................................... 6-1-76
DTC P0174/P0175 Fuel System Too
Lean/Rich (Bank 2) ................................... 6-1-78
DTC P0300/P0301/P0302/P0303/P0304/
P0305/P0306 Random Misfire/Cylinder 1
Misfire/Cylinder 2 Misfire/Cylinder 3 Misfire/
Cylinder 4 Misfire Detected/Cylinder 5
Misfire Detected/Cylinder 6 Misfire
Detected.................................................... 6-1-80
DTC P0325 (DTC No.43) Knock Sensor Circuit Malfunction ..................................... 6-1-82
DTC P0335 Crankshaft Position Sensor
Circuit Malfunction ..................................... 6-1-84
DTC P0340 (DTC No.42) Camshaft
Position Sensor Circuit Malfunction ........... 6-1-86
DTC P0400 Exhaust Gas Recirculation
Flow Malfunction ........................................ 6-1-89
DTC P0403 (DTC No.51) Exhaust Gas
Recirculation Circuit Malfunction ............... 6-1-92
DTC P0420 Catalyst System Efficiency
Below Threshold (Bank 1) ......................... 6-1-94
DTC P0430 Catalyst System Efficiency
Below Threshold (Bank 2) ......................... 6-1-96
DTC P0443 Evap Control System Purge
Control Valve Circuit Malfunction............... 6-1-98
Evap canister purge system
inspection ............................................. 6-1-100
Vacuum passage inspection ................ 6-1-100
Vacuum hose inspection ...................... 6-1-101
Evap canister purge valve and its
circuit inspection .................................. 6-1-101
Evap canister purge valve inspection .. 6-1-101
DTC P0460 Fuel Level Sensor Circuit
High Input ................................................ 6-1-103
DTC P0500 (DTC No.24) Vehicle Speed
Sensor Malfunction .................................. 6-1-105
DTC P0505 Idle Air Control System
Malfunction .............................................. 6-1-108
DTC P0601 (DTC No.71) Internal Control
Module Memory Check Sum Error .......... 6-1-110
DTC P1408 Manifold Absolute Pressure
Sensor Circuit Malfunction ....................... 6-1-111
DTC P1450/P1451 Barometric Pressure
Sensor Circuit Malfunction/Performance
Problem ................................................... 6-1-113
DTC P1500 Engine Starter Signal Circuit
Malfunction .............................................. 6-1-114
DTC P1510 Ecm Back-Up Power Supply
Malfunction .............................................. 6-1-115
Table B-1 Fuel Pump Circuit Inspection .. 6-1-116
Table B-2 Fuel Injectors and Circuit
Inspection ................................................ 6-1-117
Table B-3 Fuel Pressure Inspection ........ 6-1-119
Table B-4 Idle Air Control System
Inspection ................................................ 6-1-121
Table B-5 A/C Signal Circuits Inspection
(If Equipped) ............................................ 6-1-123
Table B-6 A/C Condenser Fan Motor
Relay Control System Inspection
(If Equipped) ............................................ 6-1-124
Special Tool ............................................... 6-1-125