Request switch SUZUKI SWIFT 2008 2.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine 1A-8 Engine General Information and Diagnosis:
CAN communication system uses the serial communication in which data is transmitted at a high speed. It uses a
twisted pair of two communication lines for the high-speed da ta transmission. As one of its characteristics, multiple
control modules can communicate simultaneously. In addition, it has a function to detect a communication error
automatically. Each module reads necessary data from the received data and transmits data. ECM communicates
control data with each control module as follows.
ECM Transmission Data
NOTE
• In communication between ECM and combination meter and between ECM and steering angle sensor (ESP ® model), data is transmitted only from ECM to combination meter and steering angle
sensor. (Combination meter and steering angle sensor does not transmit data to ECM.)
• *1: Hong Kong model only.

ECM Reception Data
Engine torque signal
Accelerator pedal position signal
Throttle position signal
Brake pedal switch signal
A/C refrigerant pressure signal
A/C compressor clutch signal
Fuel consumption signal
Immobilizer indicator light control signal
MIL control signal
Diagnostic trouble code (DTC)
Engine coolant temperature signal
Engine speed signal
Vehicle speed signal
ECM-keyless start control module code TCM BCM
Combination
Meter Keyless Start
ControlModule
Transmit DATA
ECM
ESP® Control
Module ABS Control
Module
(Non-ESP® model)
*1
I7RS0B110002-01
TCM BCM Keyless Start
Control Module
DATA
ECM
Torque request signal
A/T select lever position signal
Transmission actual gear position signal
Transmission oil temperature signal
A/C switch ON signal
Electric load signal
ESP® status signal
ABS active signal
Wheel speed signal (front right)
Wheel speed signal (front left)
ECM-keyless start control module code
ID code of keyless start control module
Receive
ABS Control
Module
(Non-ESP® model)
ESP® Control
Module
I7RS0B110003-02

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-35
Scan Tool Data Definitions
COOLANT TEMP (ENGINE COOLANT
TEMPERATURE, °C, °F)
It is detected by engine coolant temp. sensor.
INTAKE AIR TEMP. ( °C, °F)
It is detected by intake air temp. sensor.
ENGINE SPEED (rpm)
It is computed by reference pulses from the camshaft
position sensor.
INJ PULSE WIDTH (FUEL INJECTION PULSE WIDTH,
msec.)
This parameter indicates time of the injector drive (valve
opening) pulse which is output from ECM (but injector
drive time of NO.1 cylinder fo r multiport fuel injection).
DESIRED IDLE (DESIRED IDLE SPEED, rpm)
The Desired Idle Speed is an ECM internal parameter
which indicates the ECM requested idle. If the engine is
not running, this number is not valid.
SHORT FT B1 (SHORT TERM FUEL TRIM, %)
Short term fuel trim valu e represents short term
corrections to the air/fuel mixture computation. A value
of 0 indicates no correction, a value greater than 0
means an enrichment correction, and a value less than 0
implies an enleanment correction. LONG FT B1 (LONG TERM FUEL TRIM, %)
Long term fuel trim value represents long term
corrections to the air/fuel mixture computation. A value
of 0 indicates no correction, a value greater than 0
means an enrichment correction, and a value less than 0
implies an enleanment correction.
TOTAL FUEL TRIM B1 (%)
The value of Total Fuel Trim is obtained by calculating
based on values of Short Term Fuel Trim and Long Term
Fuel Trim. This value indica
tes how much correction is
necessary to keep the air/fuel mixture stoichiometrical.
MAF (MASS AIR FLOW RATE, g/s, lb/min.)
It represents total mass of air entering intake manifold
which is measured by mass air flow sensor.
CALC LOAD (CALCULATED LOAD VALUE, %)
Engine load displayed as a percentage of maximum
possible load. Value is calculated mathematically using
the formula: actual (current) intake air volume ÷
maximum possible intake air volume × 100%
THROTTLE POS (ABSOLUTE THROTTLE POSITION,
%)
When throttle position sensor is at fully closed position,
throttle opening is indicated as 0 – 5% and 90 – 100%
full open position.
O2S SENSOR B1 S1 (HEA TED OXYGEN SENSOR-1,
V)
It indicates output voltage of HO2S-1 installed on
exhaust manifold (pre-catalyst).
)
TP SENSOR 2 VOLT Ignition switch ON after
warmed up engine Accelerator pedal released
1.4 – 1.8 V
Accelerator pedal depressed
fully 3.58 – 4.76 V
) APP SENSOR 1
VOLT Ignition switch ON after
warmed up engineAccelerator pedal released
0.5 – 0.9 V
Accelerator pedal depressed
fully 3.277 – 3.915 V
) APP SENSOR 2
VOLT Ignition switch ON after
warmed up engineAccelerator pedal released
1.3 – 1.7 V
Accelerator pedal depressed
fully 4.077 – 4.715 V
) ACCEL POSITION Ignition switch ON after
warmed up engine Accelerator pedal released
0 – 5%
Accelerator pedal depressed
fully 90 – 100%
) THROTTLE TARGET
POSI Ignition switch ON after
warmed up engineAccelerator pedal released
0 – 5%
Accelerator pedal depressed
fully 90 – 100%
) BATTERY
CURRENT At specified idle speed with no load after warming up
5.0 – 60.0 A
) GENERATOR CONT
DUTY (GENERATOR
CONTROL DUTY) At specified idle speed with no load after warming up
20.0 – 100.0%
) GENERATOR FIELD
DUTY (GENERATOR
FIELD COIL DUTY) At spe
cified idle speed with no load after warming up
20.0 – 100.0%
Scan tool data
Vehicle condition Normal condition /
reference values

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-37
TP SENSOR 2 VOLT (THROTTLE POSITION SENSOR
(SUB) OUTPUT VOLTAGE, V)
The TP sensor (sub) reading provides throttle valve
opening information in the form of voltage.
APP SENSOR 1 VOLT (ACCELERATOR PEDAL
POSITION (APP) SENSOR (MAIN) OUTPUT
VOLTAGE, V)
The APP sensor (main) read ing provides accelerator
pedal opening information in the form of voltage.
APP SENSOR 2 VOLT (ACCELERATOR PEDAL
POSITION (APP) SENSOR (S UB) OUTPUT VOLTAGE,
V)
The APP sensor (sub) reading provides accelerator
pedal opening information in the form of voltage.
ACCEL POSITION (ABSOLUTE ACCELERATOR
PEDAL POSITION, %)
When accelerator pedal is at fully released position,
accelerator pedal is indicated as 0 – 5% and 90 – 100%
fully depressed position. THROTTLE TARGET POSI (TARGET THROTTLE
VALVE POSITION, %)
Target throttle valve position is ECM internal parameter
which indicates the ECM requested throttle valve
position.
BATTERY CURRENT (A)
This parameter indicates elec
tric load value (current
consumption) that detected by electric load current
sensor.
GENERATOR CONT DUTY (GENERATOR CONTROL
DUTY, %)
This parameter indicates generator control duty ratio that
controls production electricity of generator by ECM.
100%: No limitation for the generating
0%: Maximum limitation for the generating
GENERATOR FIELD DUTY (GENERATOR FIELD
COIL DUTY, %)
This parameter indicates ope rating rate (status of
production electricity) for gen erator by field coil duty
ratio.
100%: maximum operation.
0%: minimum operation.
Visual InspectionS7RS0B1104008
Visually check the following parts and systems.
Inspection item Reference section
• Engine oil – level, leakage “Engine Oil and Filter Change in Section 0B”
• Engine coolant – level, leakage “Co olant Level Check in Section 1F”
• Fuel – level, leakage “Fuel Lines and Connections Inspection in Section 0B”
• Air cleaner element – dirt, clogging “Air Cleaner Filter Inspection in Section 0B”
• Battery – fluid level, corrosion of terminal “Battery Description in Section 1J”
• Water pump belt – tension damage “Accessory Drive Belt Inspection in Section 0B”
• Throttle valve – operating sound “Electric Throttle Body Assembly On-Vehicle Inspection in Section 1C”
• Vacuum hoses of air intake system – disconnection, looseness,
deterioration, bend “Vacuum Hose and Purge Valve Chamber
Inspection in Section 1B”
• Connectors of electric wire harness – disconnection, friction
• Fuses – burning
• Parts – installation, bolt – looseness
• Parts – deformation
• Other parts that can be checked visually
Also check the following items at engine start, if possible
• Malfunction indicator lamp – Operation “Malfunction Indicator Lamp (MIL) Check”
• Charge warning lamp – Operation “Genera tor Symptom Diagnosis in Section 1J”
• Engine oil pressure warning lamp – Operation “O il Pressure Switch Inspection in Section 9C”
• Engine coolant temp. meter – Operation “ECT Sensor Inspection in Section 1C”
• Fuel level meter – Operation “Fuel Level Sensor Inspection in Section 9C”
• Tachometer – Operation
• Abnormal air being inhaled from air intake system
• Exhaust system – leakage of exhaust gas, noise
• Other parts that can be checked visually

Downloaded from www.Manualslib.com manuals search engine 4E-3 ABS:
CAN Communication System DescriptionS7RS0B4501003
Refer to “CAN Communication System Description in Section 1A” for CAN communication system description.
ABS communicates control data with each control module as follows.
ABS Transmission Data
ABS Reception Data
Combination
meter
Transmit DATA
ABS control
moduleECM
Torque request
Wheel speed signal (front right)
Wheel speed signal (front left)
Wheel speed signal (rear right)
Wheel speed signal (rear left)
ABS active
ABS indication on
EBD indication on
I6RS0C450001-01
ABS control moduleDATA
Receive
ECM
Brake pedal switch signal
I6RS0C450002-01

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-4
Schematic and Routing Diagram
ABS SchematicS7RS0B4502001
INPUTOUTPUT
ABS control moduleWheel speed sensor (LF)
Wheel speed sensor (LR)
Wheel speed sensor (RF)Battery Voltage
Ignition Voltage
Pump motor
driver (transistor)
Solenoid valve power
supply driver (transistor)
Solenoid valve
driver (transistor) Hydraulic unit
Pump motor
LF inlet solenoid valve
LF outlet solenoid valve
LR inlet solenoid valve
LR outlet solenoid valve
RF inlet solenoid valve
RF outlet solenoid valve
RR inlet solenoid valve
RR outlet solenoid valve
Data link connector
ABS hydraulic unit/control
module assembly
Wheel speed sensor (RR)
3 7
2
645
8 12
14
21
15
16
1
13
18
17
19
19
11
10
9
CAN driverStop lamp switch
Engine torque
ECM
ABS warning light
EBD warning light
Combination meter
Torque request
ECMWheel speed signal (LF)
Wheel speed signal (LR)
Wheel speed signal (RF)
Wheel speed signal (RR)
ABS active
I6RS0C450003-03

Downloaded from www.Manualslib.com manuals search engine 4F-6 Electronic Stability Program:
Warning Lamp, Indicator Lamp DescriptionS7RS0B4601003
There are five types of warning lamp and indicator lamp in instrument cluster, which are controlled by ESP ® control
module. They give warning / indication to driver by changing the modes light ON / blinking / light OFF.
The followings are the condition and operation of warning lamps and indicator lamps.
CAN Communication System DescriptionS7RS0B4601004
Refer to “CAN Communication System Description in Section 1A” for CAN communication system description. ESP ®
control module communicates control data with each control module as follows.
ESP ® Control Module Transmission Data
1
245
3
I6RS0B460002-01
1. ESP ® warning lamp 3. ABS warning lamp 5. ESP ® OFF lamp
2. EBD warning lamp (brake warning lamp) 4. SLIP indicator lamp
Warning lamp / Indicator lamp Condition and operation
ABS warning lamp If ABS has abnor mality, the lamp turns “ON”.
EBD warning lamp (brake warning
lamp) • If EBD system has abnormality, the lamp turns “ON”.
• If bake fluid level in reservoir is lower
than minimum level, the lamp turns “ON”.
• Parking brake switch is ON, the lamp turns “ON”.
ESP ® warning lamp If ESP ® systems has abnormality, the lamp turns “ON”.
SLIP indicator lamp • If stability cont rol system and traction control system is active, the lamp blinks
at 5 Hz.
• If Steering angle sensor calibration is incompleted, the lamp blinks at 1 Hz.
ESP ® OFF lamp • If ESP ® OFF switch is turned “ON”, the ESP ® OFF lamp light up. When it is
“ON”, TCS and stability control system functions are controlled not to work.
• ESP® OFF lamp light up to indicate th at brake control of traction control
function is controlled not to act if brake pad temperature is over 320 °C (608 °F)
and any of wheel is in wheel spin condition.
Combination
meter
Transmit DATA
ESP® control
moduleECMSteering angle sensor
Torque request signal
Wheel speed signal (front right)
Wheel speed signal (front left)
ESP® status signal
ABS active signal
ABS indication signal
EBD indication signal
Steering angle neutral position
I7RS0B460004-01

Downloaded from www.Manualslib.com manuals search engine 4F-8 Electronic Stability Program:
Schematic and Routing Diagram
Electronic Stability Program SchematicS7RS0B4602001
INPUTOUTPUT
ESP® control module
Wheel speed sensor (LF)
Wheel speed sensor (LR)
Wheel speed sensor (RF) Battery VoltageMaster cylinder pressure sensor
Pump motor driver
(transistor)
Solenoid valve power
supply driver (transistor)
Solenoid valve driver
(transistor)
CAN driver
CAN driver (for yaw rate /
G sensor assembly) Hydraulic unit
Pump motor
LF inlet solenoid valve
LF outlet solenoid valve
LR inlet solenoid valve
LR outlet solenoid valve
RF inlet solenoid valve
RF outlet solenoid valve
RR inlet solenoid valve
RR outlet solenoid valve
Data link connector
Data link connector
ESP® hydraulic unit/control module assembly
Wheel speed sensor (RR)
Master cylinder cut solenoid valve No. 1
Master cylinder cut solenoid
valve No. 2
Low pressure solenoid valve No. 1
Low pressure solenoid valveNo. 2
Stop lamp switch
Engine torque
Accelerator pedal position
Engine speed ECM
Brake fluid level switch
Parking brake switch
BCM
Steering angle sensor
ESP® OFF switch
Yaw rate
Lateral G Yaw rate / G sensor assembly
ABS warning lamp
EBD warning lamp
ESP® warning lamp
SLIP indicator lamp
ESP® OFF lampCombination meter
Torque request
ECM
Steering angle neutral positionSteering angle sensor
Yaw rate / G sensor assembly
Lateral G neutral position
I7RS0B460006-01

Downloaded from www.Manualslib.com manuals search engine Automatic Transmission/Transaxle: 5A-9
CAN Communication System DescriptionS7RS0B5101007
Refer to “CAN Communication System Description in Section 1A” for CAN communication System description. TCM
communicates control data with each control module as follows.
TCM Transmission Data
TCM Reception Data
DATA
TCM
Transmit
Transmission oil temperarure
signal
Torque request signal
Vehicle speed pulse signal
Transmission warning light
signal
Transmission actual gear position
signal
A/T select lever position signal
ECMCombination
meterBCM
I7RS0B510001-03
Engine torque signal
Engine speed signal
Throttle position signal
A/C compressor clutch signal
Engine coolant temperature signal
Brake pedal switch signal
Reception data from ECM
Accelerator pedal position signalI7RS0B510002-03

Downloaded from www.Manualslib.com manuals search engine 5A-14 Automatic Transmission/Transaxle:
6. Output shaft speed sensor 13. Shift solenoid valve-A (No.1) 20. Transmission warning light
7. Input shaft speed sensor 14. Transmission range sensor
INPUT OUTPUT
TCMECM
Gear shift control
4th gear inhibit control
Slope shift control
Slip control
Lock up control
Torque control
Line pressure control
Overrun control
Reverse control
Squat control
Input shaft speed sensor
Output shaft speed sensor
"3" position switch ATF temp. sensor
Shift switch
- Range "P" signal
- Range "R" signal
- Range "N" signal
- Range "D" signal
- Range "2" signal
- Range "L" signal
Fail safe function
Self diagnosis
Warning function
ECM
Shift solenoid valve-A
Shift solenoid valve-B
TCC pressure control
solenoid valve
Pressure control
solenoid valve
Signal on CAN
communincation line
COMB. METER
-Engine torque
-Engine speed
-Throttle position
-A/C compressor clutch
-Coolant temperature
-Brake pedal switch -ATF temp.
-Torque request
-Vehicle speed pulse
-Transmission actual gear
position
-A/T select lever position
-Accelerator pedal position
-Transmission warning light
-A/T select lever position
I7RS0B510005-01

Downloaded from www.Manualslib.com manuals search engine 5A-22 Automatic Transmission/Transaxle:
) P1702 Internal control module memory check
sum error • Power supply for all solenoid valves is cut.
• Gear position is fixed in 3rd gear.
• Line pressure control at gear shifting is inhibited.
• Lock-up function is inhibited to operate.
) P1703 CAN invalid data - TCM In case of throttle position signal malfunction:
• Throttle opening used for line pressure control is assumed
to be 100%.
• Throttle opening used for gear shifting control is assumed to be 0%.
• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate. Line pressure control at gear shifting is inhibited.
• Garage shift control is inhibited.
• Learning control is inhibited.
In case of engine coolant temperature signal malfunction:
• Slip controlled lock-up function is inhibited to operate.
• After 15 minutes pass from detecting malfunction, engine coolant temperature is assumed to be normal operating
temperature, and controls of overdrive and lock-up is
released from inhibition.
In case of engine revolution signal malfunction:
• Upshifting to 4th gear is inhibited.
• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Garage shift control is inhibited.
• Learning control is inhibited.
In case of engine torque signal malfunction:
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Upshifting to 4th gear is inhibited.
• Learning control is inhibited.
) P1723 Range select switch malfunction “3” position switch is assumed to be OFF.
) P1774 Control module communication bus off • Throttle opening used for line pressure control is assumed
to be 100%.
• Throttle opening used for gear shifting control is assumed to be 0%.
• Engine revolution is assumed to be 0 RPM.
• After 15 minutes pass from detecting malfunction, engine coolant temperature is assumed to be 90 °C (194 °F).
• Lock-up function is inhibited to operate.
• Line pressure control at gear shifting is inhibited.
• Torque reducing request to ECM (torque reduction control) is inhibited.
• Upshifting to 4th gear is inhibited.
• Garage shift control is inhibited.
• Learning control is inhibited.
DTC No. Trouble area Fail-safe operation