sensor SUZUKI GRAND VITARA 2002 2.G Service Owners Manual

YH4
GRAND
VITARA
8C-10 INSTRUMENTATION / DRIVER INFORMATION
G16
J20
H25
1. ECT sensor
1
ENGINE COOLANT TEMP. (ECT) METER AND
SENSOR
ENGINE COOLANT TEMPERATURE (ECT) METER
INSPECTION
1) Disconnect Y/W lead wire going to ECT sensor.
2) Turn ignition switch ON, and check that ECT meter indicates
COOL.
3) Turn ignition switch OFF.
4) Ground Y/W lead wire through a 3.4 W test bulb (1) as illustrated.
5) Turn ignition switch ON, and check that bulb light up and pointer
(2) moves to hot side.
6) If ECT meter shows no operation, repair or replace defective
parts.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
REMOVAL AND INSTALLATION
Refer to ECT SENSOR in ON-VEHICLE SERVICE in Section 6E1
(for G16 and J20) or Section 6E2 (for H25) of this manual for details.

YH4
GRAND
VITARA
G16
J20
H25
1. Oil pressure switch
INSTRUMENTATION / DRIVER INFORMATION 8C-11
INSPECTION
1) Warm up ECT sensor (1) observing resistance between sensor
terminal (2) and sensor unit (1). Resistance should be de-
creased with increase of its temperature.
2) Check resistance between sensor terminal (2) and sensor unit
(1) shown below. If check result is not as specified, replace sen-
sor.
Temperature
Resistance
50
C (122
F)136 ± 216

OIL PRESSURE LIGHT
OIL PRESSURE SWITCH
REMOVAL AND INSTALLATION
Refer to OIL PRESSURE CHECK in Section 6A1 (for G16), Section
6A2 (for H25), and Section 6A4 (for J20) of this manual for details.
INSPECTION
1) Disconnect oil pressure switch (1) lead wire.
2) Check for continuity between oil pressure switch terminal (2)
and cylinder block (3) as shown.
During Engine Running
No continuity
At Engine StopContinuity
If check result is not as specified, replace oil pressure switch (1).

YH4
GRAND
VITARA
12
3
3
1. Driver side air bag
2. Passenger side air bag
3. Seat belt pretensioner
(if equipped)
1-1. SDM
1-1. Sensor
1-2. Voltage converter1-3. Safing sensor
1-4. Micro-controller
1-5. Energy reserve circuit1-6. Ignition driver circuit
1-2. Power source
3. Driver air bag 4. Passenger air bag
5. Seat belt pretensioner (if equipped)
6. Squib circuit
AIR BAG SYSTEM 10B-3
GENERAL DESCRIPTION
With the air bag system which includes air bags for both the driver's
and passenger's sides as well as the seat belt pretensioners (if
equipped), the sag of the seat belt is taken up, the driver air bag (in-
flator) module is deployed from the center of the steering column
and the passenger air bag (inflator) module from the top of the
instrument panel in front of the front passenger seat in occurrence
of a front collision with an impact larger than a certain set value to
supplement protection offered by the driver and front passenger
seat belts.
The air bag system is designed to activate only in severe frontal col-
lisions. It is not designed to activate in rear impacts, side impacts,
rollovers, or minor frontal collisions, since it would offer no protec-
tion in those types of accidents.

YH4
GRAND
VITARA
AIR BAG SYSTEM 10B-63
REPAIRS AND INSPECTIONS REQUIRED AFTER AN ACCIDENT
CAUTION:

All air bag system components, including the electrical harness (component mounting points), must
be inspected after an accident. If any components are damaged or bent, they must be replaced even
if air bag system activation did not occur.

Never use air bag system parts from another vehicle.

Do not attempt to service the parts below. Service of these parts is by replacement only.
± Driver/Passenger air bag (inflator) module
± Driver/Passenger seat belt pretensioner
± SDM
± Contact coil and combination switch assembly
± Air bag wire harness

Proper operation of the sensors and air bag system requires that any repairs to the vehicle structure
return it to its original production configuration.
CAUTION:
After detecting one time of such collision as to meet deployment conditions, the SDM must not be used.
Refer to ªDiagnosisº when checking the SDM.
ACCIDENT WITH DEPLOYMENT ± COMPONENT
REPLACEMENT
Certain air bag system components must be replaced. Those com-
ponents are:

Driver and passenger air bag (inflator) modules
± Replace with new one.

Driver and passenger seat belt pretensioners
± Replace with new one as an assembly.

SDM after detecting such collision as to meet deployment condi-
tions
± Replace with new one.