2008 SUZUKI SWIFT brake light

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Connector: E23Terminal Wire color Circuit Terminal Wire color Circuit 1 BLK/RED Main power supply 31 BLK Ground for ECM
2WHT/RED Power source for ECM internal
memory 32 RED/YELPower supply of throttle
actuator drive circuit
3RED CAN communication line
(active high signal) for ABS/
ESP®
control module, BCM,
combination meter 33 — —
4BRN Engine revolution signal output
for P/S control module 34 REDOutput of 5 V power source for
APP sensor (sub)
5 PPL/WHT 12 V serial communication line
of DLC 35 BRNOutput of 5 V power source for
APP sensor (main)
6 — — 36 YEL APP sensor (sub) signal
7 — — 37 GRN APP sensor (main) signal
8— — 38— —
9— — 39— —
10——40—— 11——41——
12 BLU Diagnosis switch terminal
(Hong Kong model) 42 — —
13 YEL/RED Clock signal for immobilizer
coil antenna 43 — —
14——44——
15 GRN/WHT Fuel pump relay output 45 BLU/ORN Throttle actuator control relay
output
16 BLK/RED Main power supply 46 LT GRN Radiator cooling fan relay No.1
output
17 — — 47 GRY A/C compressor relay output
18 WHT CAN communication line
(active low signal) for ABS/
ESP®
control module BCM,
combination meter 48 GRN
Radiator cooling fan relay No.2
and No.3 output
19 BLU/WHT Electric load signal for heater
blower motor 49 — —
20 GRN/WHT Brake light switch signal 50 — Ground for shield wire of APP
sensor
21 — — 51 WHT Ground for APP sensor (sub)
22 — — 52 BLU Ground for APP sensor (main)
23——53——
24 — — 54 ORN Ground for sensors
25 PPL Vehicle speed signal output for
P/S control module 55 REDA/C refrigerant pressure
sensor signal
26 RED/BLU EPS signal 56 — —
27 — — 57 WHT/BLK A/C evaporator outlet air temp.
sensor signal (Manual A/C
model)
28 YEL/BLK Serial communication line for
immobilizer coil antenna 58 — —
29 BLK/WHT Ignition switch signal 59 — —
30 WHT Starting motor control relay
output 60 BRN/WHT Main power supply relay output

Downloaded from www.Manualslib.com manuals search engine 1A-20 Engine General Information and Diagnosis:
1. Air cleaner16. CMP sensor31. Battery
2. EVAP canister purge valve 17. CKP sensor32. A/C compressor relay
3. MAF and IAT sensor 18. Radiator cooling fan33. A/C switch
4. TP sensor 19. Combination meter34. A/C evaporator outlet air temp. sensor (manual A/C model)
5. Throttle actuator 20. BCM35.Immobilizer coil antenna
6. MAP sensor 21. Ignition switch36. Main relay
7. EGR valve 22. Starter magnetic switch37. APP sensor
8. EVAP canister 23. HO2S-238. Oil control valve (VVT model)
9. Tank pressure control valve (built-in fuel pump) 24. DLC 39. TCM (A/T model)
10. Fuel pump (with pressure regulator) 25. Electric load40. Starting motor control relay
11. Ignition coil assembly 26. Fuel level sensor41. A/C refrigerant pressure sensor
12. Fuel injector 27. Brake light42. Throttle actuator control relay
13. HO2S-1 28. Brake light switch43. ABS/ESP® control module
14. Knock sensor 29. ECM44. Wheel speed sensor (VSS)
15. ECT sensor 30. Barometric pressure sensor

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-21
Component Location
Electronic Control System Components LocationS7RS0B1103001
NOTE
The figure shows left-hand steering vehicle. For right-hand steering vehicle, parts with (*) are installed
at the opposite side.

I*
E*
G*
D
K H*
J
C*
7
A
F
c
L
i m
f
B*
e
g
k
l
13
3*
4
j
10 12 h
58
a
9
b
1
5-1
d
2
11
6
14*
I7RS0B110011-02
Information sensors Control devices Others
1. MAF and IAT sensor a: Fuel injectorA: ECM
2. TP sensor b: EVAP canister purge valve B: Combination meter
3. Brake light switch c: Fuel pump relayC: EVAP canister
4. ECT sensor d: EGR valveD: A/C evaporator outlet air temp. sensor (manual A/C model)
5. HO2S-1 e: MILE: Data link connector
5-1. HO2S-2 f: Radiator cooling fan relay No.3F: A/C compressor relay
6. Wheel speed sensor (VSS) g: Immobilizer indicator lightG: TCM (A/T model)
7. Battery h: Ignition coil assembly (with ignitor) H: BCM (included in junction block assembly)
8. CMP sensor i: Main relayI: Immobilizer coil antenna
9. MAP sensor j: Oil control valveJ: EPS control module
10. CKP sensor k: Radiator cooling fan relay No.2K: A/C refrigerant pressure sensor
11. Fuel level sensor l: Radiator cooling fan relay No.1L: Diagnosis connector (Hong Kong model)
12. Knock sensor m: Starting motor control relay
13. Electric load current sensor
14. APP sensor

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-33
Scan Tool DataS7RS0B1104007
As the data values are standard values estimated on the basis of values obtained from the normally operating vehicles
by using a scan tool, use them as re ference values. Even when the vehicle is in good condition, there may be cases
where the checked value does not fall within each specified data range. Therefore, judgment as abnormal should not
be made by checking with these data alone.
Also, conditions that can be checked by the scan tool are those detected by ECM and output from ECM as commands
and there may be cases where the engine or actuator is not operating (in the condition) as indicated by the scan tool.
Be sure to use the timing light to check the ignition timing.
NOTE
• There are two types of OBD system depending on the vehicle specification.
For details, refer to “Precaution on On-Board Diagnostic (OBD) System”.
• With the generic scan tool, only star (*) marked data in the following table can be read.
• When checking the data with the engine running at idle or racing, be sure to shift M/T gear to the neutral position and A/T gear to the “Park” position and pull the parking brake fully. Also, if nothing
or “no load” is indicated, turn O FF A/C (if equipped with A/C), all electric loads, P/S and all the other
necessary switches.

) P2122 Throttle/pedal position sensor/switch/“D” (main)
circuit low input
• ECM turns off throttle actuator control relay and throttle valve is fixed at the specified opening from
its completely closed position (default opening).
For details, refer to “Description of Electric
Throttle Body System”.
• ECM controls fuel cut at specified engine speed.
• ECM stops air/fuel ratio control.
)
P2123 Throttle/pedal position sensor/switch/“D” (main)
circuit high input
) P2127 Throttle/pedal position sensor/switch/“E” (sub)
circuit low input
) P2128 Throttle/pedal position sensor/switch/“E” (sub)
circuit high input
) P2135 Throttle/pedal position sensor/switch/“A”/“B”
(main) / (sub) voltage correction
) P2138 Throttle pedal position sensor/switch “D”/“E”
(main) / (sub) voltage correlation
) P2227 Barometric pressure sensor performance problem ECM controls actuators assuming that barometric
pressure is 101.33 kPa (762 mmHg).
DTC No. Detected item Fail-safe operation
Scan tool data
Vehicle condition Normal condition /
reference values
* ) COOLANT TEMP At specified idle speed after warming up 80 – 100 °C, 176 – 212 °F
* ) INTAKE AIR TEMP. At specifie d idle speed after warming up –5
°C (23 °F) + environmental
temp. to 40 °C (104 °F) +
environmental temp.
* ) ENGINE SPEED It idling with no load after warming upDesired idle speed ± 50 rpm
) INJ PULSE WIDTH At specified idle speed with no load after warming up
2.0 – 4.0 msec.
At 2500 r/min. with no load after warming up 2.0 – 3.6 msec.
) DESIRED IDLE It idling with radiator cooling fan stopped and all electrical
parts turned OFF after warming up, M/T at neutral 700 rpm
* ) SHORT FT B1 At specified idle speed after warming up –20 – +20%
* ) LONG FT B1 At specified idle speed after warming up –20 – +20%
) TOTAL FUEL TRIM
B1 At specified idle speed after warming up
–35 – +35%
* ) MAF At specified idle speed wit
h no load after warming up 1.0 – 4.0 g/s 0.14 – 0.52 lb/
min.
At 2500 r/min. with no load after warming up 4.0 – 12.0 g/s 0.53 – 1.58 lb/
min.
* ) CALC LOAD At specified idle speed with no load after warming up
18 – 28%
At 2500 r/min. with no load after warming up 13 – 23%
* )
THROTTLE
POSITION Ignition switch ON /
warmed up engine
stoppedAccelerator pedal released
0 – 5%
Accelerator pedal depressed
fully 90 – 100%

Downloaded from www.Manualslib.com manuals search engine 1A-34 Engine General Information and Diagnosis:
*) O2S B1 S1 At specified idle speed after warming up 0.1 – 0.95 V
) O2S B1 S1 ACT At specified id le speed after warming up ACTIVE
* ) O2S B1 S2 At 2000 r/min. for 3 min. or longer after warming up. 0.1 – 0.95 V
) O2S B1 S2 ACT At specified id le speed after warming up ACTIVE
* ) FUEL SYSTEM B1 At specif ied idle speed after warming up CLSD (closed loop)
* ) MAP At specified idle speed with no load after warming up 24 – 38 kPa, 7.1 – 11.2 in.Hg
) BAROMETRIC
PRES —Barometric pressure is
displayed
) STEP EGR FLOW
DUTY At specified idle speed after warming up 0%
) FUEL CUT Engine at fuel cut condition ON
Engine at other than fuel cut condition OFF
) A/C PRESSURE Engine running A/C ON (A/C is operating) at
ambient temperature: 30
°C (86
° F) and humidity: 50% 1350 – 1650 kPa For more
details, refer to pressure of
high pressure gage under “A/C System Performance
Inspection in Section 7B” or “A/C Refrigerant Pressure Sensor and Its Circuit
Inspection in Section 7B”.
A/C OFF (A/C is not operating)
at ambient temperature: 30 ° C
(86 °F) and engine coolant
temperature: 90 – 100 °C (194 –
212 °F) 600 – 1000 kPa After longer
than 10 min from A/C switch turned off
) CLOSED
THROTTLE POS Throttle valve at idle position ON
Throttle valve opens larger than idle position OFF
) CANIST PRG DUTY At specified idle speed after warming up 0%
* ) IGNITION ADVANCE At specified idle s peed with no load after warming up 3 – 13 ° BTDC
) BATTERY VOLTAGE Ignition switch ON / engine at stop 10 – 14 V
) FUEL PUMP Within 2 seconds after ignition switch ON or engine
running
ON
Engine at stop with ignition switch ON OFF
) ELECTRIC LOAD Ignition switch ON / Headligh
t, small light, all turned OFF OFF
Ignition switch ON / Headli ght, small light, turned ON ON
) BRAKE SWITCH Igni tion switch ONBrake pedal is released OFF
Brake pedal is depressed ON
) RADIATOR FAN Ignition switch ON Engin
e coolant temp.: Lower
than 95 °C (203 °F) OFF
Engine coolant temp.: 97.5 °C
(208 °F) or higher ON
) BLOWER FAN Ignition switch ON Blower fan switch: 3rd speed
position or more
ON
Blower fan switch: under 2nd
speed position OFF
) A/C SWITCH Engine running after warming up, A/C not operating
OFF
Engine running after warming up, A/C operating ON
) A/C COMP RELAY Engine running A/C switch and blower motor
switch turned ON
ON
A/C switch and blower motor
switch turned OFF OFF
* ) VEHICLE SPEED At stop 0 km/h (0 mph)
) VVT GAP At specified idle speed after warming up 0 – 3°
) TP SENSOR 1 VOLT Ignition switch ON after
warmed up engine Accelerator pedal released
0.6 – 1.0 V
Accelerator pedal depressed
fully 3.37 – 4.55 V
Scan tool data
Vehicle condition Normal condition /
reference values

Downloaded from www.Manualslib.com manuals search engine 1A-36 Engine General Information and Diagnosis:
O2S B1 S1 ACT (HEATED OXYGEN SENSOR-1,
ACTIVE / INACTIVE)
This parameter indicates activation condition of HO2S-1.
ACTIVE: Activating
INACTIVE: warming up or at stop
O2S SENSOR B1 S2 (HEATED OXYGEN SENSOR-2,
V)
It indicates output voltage of HO2S-2 installed on
exhaust pipe (post-catalyst). It is used to detect catalyst
deterioration.
O2S B1 S2 ACT (HEATED OXYGEN SENSOR-2,
ACTIVE / INACTIVE)
This parameter indicates acti vation condition of HO2S-2.
ACTIVE: Activating
INACTIVE: warming up or at stop
FUEL SYSTEM (FUEL SYSTEM STATUS)
Air/fuel ratio feedback loop status displayed as one of
the followings.
OPEN: Open-loop has not yet satisfied conditions to go
closed loop.
CLOSED: Closed-loop using oxygen sensor(s) as
feedback for fuel control.
OPEN-DRIVE COND: Open-loop due to driving
conditions (Power enrichment, etc.).
OPEN SYS FAULT: Open-loop due to detected system
fault.
MAP (MANIFOLD ABSOLUTE PRESSURE, in.Hg,
kPa)
This value indicates how much correction is necessary
to keep the air/fuel mixture stoichiometrical.
It is detected by manifold absolute pressure sensor.
BAROMETRIC PRESS (kPa, in.Hg)
This parameter represents a measurement of barometric
air pressure and is used for al titude correction of the fuel
injection quantity and IAC valve control.
STEP EGR FLOW DUTY (%)
This parameter indicates opening rate of EGR valve
which controls the amount of EGR flow.
FUEL CUT (ON/OFF)
ON: Fuel being cut (output signal to injector is stopped)
OFF: Fuel not being cut
A/C PRESSURE (A/C REFRIGERANT ABSOLUTE
PRESSURE, kPa)
This parameter indicates A/C refrigerant absolute
pressure calculated by ECM.
CLOSED THROTTLE PO S (CLOSED THROTTLE
POSITION, ON/OFF)
This parameter reads ON wh en throttle valve is fully
closed, or OFF when it is not fully closed. CANIST PRG DUTY (EVAP CANISTER PURGE FLOW
DUTY, %)
This parameter indicates valve ON (valve open) time
rate within a certain set cycle of EVAP canister purge
valve which controls the amount of EVAP purge.
IGNITION ADVANCE (IGNITION TIMING ADVANCE
FOR NO.1 CYLINDER,
°)
Ignition timing of No.1 cylinder is commanded by ECM.
The actual ignition timing should be checked by using
the timing light.
BATTERY VOLTAGE (V)
This parameter indicates battery positive voltage
inputted from main relay to ECM.
FUEL PUMP (ON/OFF)
ON is displayed when ECM activates the fuel pump via
the fuel pump relay switch.
ELECTRIC LOAD (ON/OFF)
ON: Headlight or small light ON signal inputted.
OFF: Above electric loads all turned OFF.
BRAKE SW (ON/OFF)
This parameter indicates the state of the brake switch.
RADIATOR COOLING FAN (RADIATOR COOLING
FAN CONTROL RELAY, ON/OFF)
ON: Command for radiator cooling fan control relay
operation being output.
OFF: Command for relay operation not being output.
BLOWER FAN (ON/OFF)
This parameter indicates the state of the blower fan
motor switch.
A/C SWITCH (ON/OFF)
ON: Command for A/C operatio n being output from ECM
to HVAC.
OFF: Command for A/C oper ation not being output.
A/C COMP RELAY (A/C COMPRESSOR RELAY, ON/
OFF)
This parameter indicates the state of the A/C switch.
VEHICLE SPEED (km/h, mph)
It is computed based on pulse signals from vehicle
speed sensor.
VVT GAP (TARGET-ACTUAL POSITION, °)
It is calculated using the formula: target valve timing
advance – actual valve timing advance.
TP SENSOR 1 VOLT (THROTTLE POSITION SENSOR
(MAIN) OUTPUT VOLTAGE, V)
The TP sensor (main) reading provides throttle valve
opening information in the form of voltage.

Downloaded from www.Manualslib.com manuals search engine 1A-216 Engine General Information and Diagnosis:
Repair Instructions
Idle Speed and IAC Throttle Valve Opening
Inspection
S7RS0B1106001
Before idle speed check, make sure of the following.
• Lead wires and hoses of electronic fuel injection and engine and emission control systems are connected
securely.
• Valve lash is checked according to maintenance schedule.
• Ignition timing is within specification.
• All accessories (wipers, heater, lights, A/C, etc.) are out of service.
• Air cleaner has been properly installed and is in good condition.
• No abnormal air drawn in from air intake system.
After all items are confirmed, check idle speed and IAC
duty as follows.
NOTE
Before starting engine, place transmission
gear shift lever in “Neutral” (shift selector
lever to “P” range for A/T vehicle), and set
parking brake and block drive wheels.

1) Connect SUZUKI scan tool to DLC (1) with ignition
switch turned OFF.
Special tool
(A): SUZUKI scan tool 2) Warm up engine to normal operating temperature.
3) Check engine idle speed and “IAC throttle opening”
by using “Data List” mode on scan tool to check “IAC
throttle opening”.
4) If check result is out of sp ecification, inspect electric
throttle body assembly referring to “Electric Throttle
Body Assembly On-Vehicle Inspection in Section
1C”.
Engine idle speed
A/C OFF: 700 ± 50 rpm (IAC duty: 5 – 55%)
A/C ON: 850 ± 50 rpm
5) Check that specified engine idle speed is obtained with A/C turned ON if vehi cle is equipped with A/C.
If not, check A/C system.
(A)
1
I4RS0B110093-01

Downloaded from www.Manualslib.com manuals search engine Engine Mechanical: 1D-4
Targeted Timing Varying Operation
Diagnostic Information and Procedures
Compression CheckS7RS0B1404001
Check compression pressure on all 4 cylinders as
follows:
1) Warm up engine to normal operating temperature.
2) Stop engine after warming up.
NOTE
After warming up engine, place transaxle
gear shift lever in “Neutral”, and set parking
brake and block drive wheels.

3) Disconnect negative cable at battery.
4) Remove engine cover.
5) Remove air cleaner assembly and air suction hose referring to “Air Cleaner Components”.
6) Remove cylinder head upper cover.
7) Disconnect ignition coil couplers (1).
8) Remove ignition coil assemblies (2) with high- tension cord (3).
9) Remove all spark plugs.
10) Disconnect fuel injector wires (4) at the coupler. Driving condition Valve timing Target of control Effect
Engine running at idle
speed Most retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to in
take manifold. Stabilization of the engine
rotation at idle speed.
Average engine load
range To the advanced
sideTo lengthen the valve opening overlap
in order to enhance the internal
exhaust gas recirculation and reduce
the pumping loss. Improvement of the fuel
efficiency.
Lowering of the exhaust
emission.
Light engine load
range To the retarded sideTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to in
take manifold. Keeping of the engine stability.
Low or average
engine speed range
with heavy engine
load To the advanced
side
To advance the closing timing of the
intake valve in order to improve the
volumetric efficiency. Improvement of generating the
engine torque at low and
average engine speed.
High engine speed
range with heavy
engine load To the retarded sideTo retard the closing timing of the
intake valve in order to improve the
volumetric efficiency. Improvement of generating the
engine power.
Low engine coolant
temperature Most retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to intake manifold and
reduce the fuel increasing.
To slow the fast idle speed of the
engine as a result of stabilizing the
engine idling. Stabilization of the fast idling of
the engine.
Improvement of the fuel
efficiency.
At engine starting and
stopping Most retardedTo shorten the valve opening overlap in
order to prevent the exhaust gas
counterflow to in
take manifold. Improvement of start ability.I2RH0B140003-01