2007 SUZUKI SWIFT Engine electric device

Downloaded from www.Manualslib.com manuals search engine 1C-10 Engine Electrical Devices:
Knock Sensor Removal and InstallationS7RS0B1306016
Removal1) Disconnect negative (–) cable at battery.
2) Hoist vehicle.
3) Remove right side drive shaft referring to “Front Drive Shaft Assembly Removal and Installation in
Section 3A”.
4) Disconnect knock sensor connector (1).
5) Remove knock sensor (2) from cylinder block.
Installation
Reverse removal procedure for installation.
Tightening torque
Knock sensor (a): 22 N· m (2.2 kgf-m, 16.0 lb-ft)
Main Relay, Fuel Pump Relay and Starting Motor
Control Relay Inspection
S7RS0B1306017
1) Disconnect negative (–) cable at battery.
2) Remove main relay (1), fuel pump relay (3) and/or
starting motor control relay (2) from individual circuit
fuse box No.1.
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 “B”
of relay. Connect battery negative (–) terminal to
terminal “A” of relay. Ch eck for continuity between
terminal “C” and “D”. If t here is no continuity when
relay is connected to the battery, replace relay.
1 2, (a)
I3RB0A130007-01
"D"
"B" "A"
"C"
2
1
3
I4RS0A130014-01

Downloaded from www.Manualslib.com manuals search engine Engine Electrical Devices: 1C-11
MAF and IAT Sensor On-Vehicle InspectionS7RS0B1306018
NOTE
Before performed this inspection, be sure to
read the “Precautions of ECM Circuit
Inspection in Section 1A”.

1) Disconnect negative (–) cable at battery.
2) Disconnect MAF and IAT sensor connector.
3) Connect voltmeter to “BLK/RED” wire terminal (2) of
MAF and IAT sensor connector (1) disconnected and
ground.
4) Turn ON ignition switch position and check that voltage is battery voltage.
If not, check if wire harness is open or connection is
poor.
5) Turn OFF ignition switch position and connect connector to MAF and IAT sensor.
6) Remove ECM from its bracket referring to “ECM Removal and Installation”.
7) Connect special tool between ECM and ECM connector referring to “Inspection of ECM and Its
Circuits in Section 1A”.
8) Turn ON ignition switch position and check MAF signal voltage between “C37-26” terminal circuit and
“C37-27” terminal circuit of special tool.
MAF signal voltage between “C37-26” terminal
circuit and “C37-27” termi nal circuit of special
tool
MAF signal voltage of MAF and IAT sensor with
ignition switch turned ON: 0.5 – 1.0 V
9) Start engine and check that voltage is lower than 5 V and it rises as engine speed increases.
MAF signal voltage between “C37-26” terminal
circuit and “C37-27” termi nal circuit of special
tool
MAF signal reference voltage of MAF and IAT
sensor at specified Idle speed: 1.3 – 1.8 V 10) If check result is not as
specified above, cause may
lie in wire harness, connec tor connection, MAF and
IAT sensor or ECM.
MAF and IAT Sensor Removal and InstallationS7RS0B1306019
CAUTION!
• Do not disassemble MAF and IAT sensor.
• Do not expose MAF and IAT sensor to any shock.
• Do not clean MAF and IAT sensor.
• If MAF and IAT sensor has been dropped, it should be replaced.
• Do not blow compressed air by using air gun or the like.
• Do not put finger or any other object into MAF and IAT sensor. Malfunction may
occur.

Removal
1) Disconnect negative (–) cable at battery.
2) Disconnect MAF and IAT sensor connector.
3) Remove air cleaner case (1).
4) Remove MAF and IAT sensor (2) from air cleaner case.
Installation
Reverse removal procedure noting the followings.
• Tighten MAF and IAT sensor screws to specified torque.
Tightening torque
MAF and IAT sensor screw (a): 1.5 N·m (0.15 kgf-
m, 1.1 lb-ft)
• Connect MAF and IAT sensor connector securely.
1. ECM
I3RB0A130009-01
“C37-27” “C37-26” 1
I4RS0A130009-01
1
2
I4RS0A130010-01
(a)
I4RS0A130011-01

Downloaded from www.Manualslib.com manuals search engine 1C-12 Engine Electrical Devices:
MAF and IAT Sensor InspectionS7RS0B1306020
CAUTION!
Do not heat up MAF and IAT sensor more
than 100 °C (212 °F). Otherwise, MAF and IAT
sensor will be damaged.

• Check sensor O-ring (1) for damage and deterioration. Replace as necessary.
• Blow hot air to temperature sensing part (2) of MAF and IAT sensor (3) using hot air drier (4) and measure
resistance between sensor terminals while heating air
gradually.
If measured resistance does not show such
characteristic as shown, replace MAF and IAT sensor.
IAT sensor resistance
–20 °C (–4 °F): 13.6 – 18.4 k Ω
20 °C (68 °F): 2.21 – 2.69 k Ω
60 °C (140 °F): 0.493 – 0.667 k Ω
Electric Load Current Sensor On-Vehicle
Inspection
S7RS0B1306021
Using SUZUKI Scan Tool
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Check “Battery Current” displayed on scan tool at following condition.
Battery current
Ignition switch ON: 6.5 – 7.5 A
Ignition switch ON, headlight ON: 18.6 – 19.1 A
Ignition switch ON, headlight ON and blower
motor switch is HI position: 27.1 – 27.6 A
Engine running at idle speed, headlight ON,
blower motor switch is HI position and rear
defogger switch ON: 38.1 – 41.7 A
If check result is satisfactory, electric load current sensor
is in good condition.
If check result is not satisf actory, check the following
parts and circuit.
• Electric load current sensor circuit (power, ground and output)
• Following charging system components
– Battery (refer to “Battery Inspection in Section 1J”)
– Generator (refer to “Generator Inspection in Section 1J”)
– Generator output control ci rcuit (refer to “Generator
Test (Undercharged Battery Check) in Section 1J”)
– Generator field coil monitor circuit (refer to “Generator Inspection in Section 1J”)
If electric load current sensor circuit and charging
system is in good condition, electric load current sensor
(1) is faulty.
[A]: Lower limit [D]: Resistance
[B]: Nominal [E]: Temperature
[C]: Upper limit 5. Temperature gauge
200
6832104 140 17640 60 80
(2.45)
(0.58)
1
2
3
4 5
[A] [B]
[E]
[C]
[D]
I4RS0A130012-01
2. Main fuse box
2
1
I5RS0C130001-01

Downloaded from www.Manualslib.com manuals search engine Engine Electrical Devices: 1C-13
Without Using SUZUKI Scan Tool1) Measure sensor voltage between “C37-23” terminal of ECM connector and vehicle body ground referring
to “Inspection of ECM and Its Circuits in Section 1A”.
If check result is satisfactory, electric load current
sensor is in good condition.
If check result is not satisfactory, check the following
parts and circuit.
• Electric load current sensor circuit (power, ground and output)
• Following charging system components – Battery (refer to “Battery Inspection in Section
1J”)
– Generator (refer to “Generator Inspection in Section 1J”)
– Generator output control circuit (refer to “Generator Test (Undercharged Battery Check)
in Section 1J”)
– Generator field coil monitor circuit (refer to “Generator Inspection in Section 1J”) If electric load current sensor circuit and charging
system is in good condition,
electric load current sensor
(1) is faulty.
Specifications
Tightening Torque SpecificationsS7RS0B1307001
Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”.
2. Main fuse box
2
1
I5RS0C130001-01
Fastening part
Tightening torque
Note
N ⋅mkgf-mlb-ft
ECM mounting bolt 8 0.8 6.0 )
APP sensor assembly nut 5.5 0.55 4.0 )
ECT sensor 15 1.5 11.0 )
Heated oxygen sensor 45 4.5 32.5 )
CMP sensor bolt 10 1.0 7.5 )
CKP sensor bolt 10 1.0 7.5 )
Knock sensor 22 2.2 16.0 )
MAF and IAT sensor screw 1.5 0.15 1.1 )

Downloaded from www.Manualslib.com manuals search engine 8B-126 Air Bag System:
The adapter (1) will also give an idea of whether or not
contact tension is sufficient, helping to find an open or
intermittent open due to poor terminal contact. An SDM
short bar release tool (2) is included in the connector test
adapter kit. Inserting it in to the SDM connector (3) will
releases the shorting bar.
Special tool
(B): 09932–75010 Air bag driver / passenger load
tool
This tool is used as a diagno stic aid and safety device to
prevent inadvertent air bag (inflator) module deployment.
The load tool has three connectors attached to its case
which are electrically functional and serve as resistive
load substitutions.
No more than two connectors are used at any time.
One of connectors (“STEER ING WHEEL”) is used to
substitute the load of the followings.
• Driver air bag (inflator) module when it is connected at the top of the column to the contact coil assembly.
• Passenger air bag (inflator) module when it is connected to the air bag harness connector in
instrument panel harness for passenger air bag
(inflator) module.
• Each of driver and passen ger seat belt pretensioners
when it is connected to air bag harness connector in
instrument panel harness for driver and passenger
seat belt pretensioners.
• Side-air bag (inflator) module when it is connected to the floor harness connector for side-air bag (inflator)
module.
• Side curtain-air bag (inflator) module when it is connected to the floor harness connector for side
curtain-air bag (inflator) module. Another connec
tor (“BASE OF COLUMN ”) is used to
substitute the load of the driver air bag (inflator) module
and the contact coil assembly when it is connected at the
base of the column to the air bag wire harness.
The third connector (“PASSENGER INFLATOR”) is not
used.
By substituting the resistan ce of the load tool when
called for, a determination can be made as to whether an
inflator circuit component is causing system malfunction
and which component is causing the malfunction.
The load tool should be used only when specifically
called for in the diagnostic procedures.
1
2
3
I4RS0A820108-01
1. Connector for contact coil and driver air bag (inflator) module
(Located near the base of the steering column)
2. Connector for driver, passenger air bag (inflator) module, side-air bag (inflator) module and driver and passenger seat belt pretensioners
3. Not used
I1JA01820004-01

Downloaded from www.Manualslib.com manuals search engine 10B-3 Body Electrical Control System:
Theft Deterrent LightS7RS0BA201003
The information display or clock (1) of this vehicle includes a theft deterrent light (2) for the theft preventive purpose.
The BCM makes the theft deterrent light flash at certain interval s after the ignition switch is turned off until it is turned
on again. Also, to check DTCs stored in BCM without usin g a SUZUKI scan tool when diagnosing troubles, it is
possible to identify them by flashing patterns of the theft deterrent light.
Security Alarm Description (If Equipped)S7RS0BA201004
Operation
The security alarm system provides a warning of an abnormal condition to those who are around. Its operation is as
follows. While the system is in the stand- by mode (when 20 seconds or more elapsed after the door is locked using a
keyless entry transmitter or door request switch), BCM monitors door lock status, door switch status and battery power
supply voltage. When it detects an abnormal condition (door is unlocked by some way other than using keyless entry
transmitter or door request switch and opened or cut off BCM power supply voltage temporarily), it activates the
warning buzzer (located in BCM), theft deterr ent light, hazard warning relay and horn relay.
The security alarm system has 2 selectable modes.
• A mode: No operation
• B mode: Theft deterrent light blinks, hazard warning lights blink, warning buzzer (located in BCM) sounds and horn
sounds
When B mode is selected and the door is locked using keyl ess entry transmitter or door request switch, the theft
deterrent light (1) flashes at 0.1 second interval for 20 seconds and the se curity alarm system is set to the stand-by
mode (2). Once it is se t to the stand-by mode, the theft deterrent light blinks at 2 second intervals.
When the system is set to stand-by mode and the door is unlocked by some way other than using keyless entry
transmitter or door request switch and opened or cut off BCM power supply voltage temporarily, the alarm devices
operate according to the selected mode as described above.
The alarm stops under either of the following conditions.
• Ignition switch is turned ON
• A certain time has elapsed since the alarm started
For selection of the mode of the security alarm system , refer to “Security Alarm Mode Selection Procedure (If
Equipped)”.
1 2I4RS0AA20031-01
B A1T3
T1
T2 2
C
I5RS0DA20003-01
A: Indicator lamp turned ON
T1: 0.1 seconds
B: Indicator lamp turned OFF T2: 20 seconds
C: When door is locked using keyless entry tr ansmitter or door request switch T3: 2 seconds