2007 SUZUKI SWIFT Ignition circuit

Downloaded from www.Manualslib.com manuals search engine 1A-10 Engine General Information and Diagnosis:
Description of Electric Throttle Body System CalibrationS7RS0B1101008
ECM calculates controlled opening of the throttle valve on the basis of the completely closed throttle valve position of
the electric throttle body system. The completely closed position data is saved in memory of ECM. However, the
completely closed position of the throttle valve of the electric throttle body system (signal voltage from throttle position
sensor when throttle is completely closed) differs one from the other depending on individual differences of the throttle
valve and throttle position sensor. As such individual diff erences must be taken into account for controlling the throttle
valve, it is necessary to register the completely closed throttle valve position data in ECM. When such data is
registered in ECM, it is sa ved in RAM (memory) of ECM and used as the base data for controlling the throttle valve.
This data is cleared, when any of the works described in “Preca utions of Electric Throttle Body System Calibration” is
performed.
Also, after replacement of the throttle body and/or APP sensor , the completely closed position data in memory of ECM
must be cleared once and a new one must be registered, or ECM cannot judge the complete closure position properly.
For the procedure to register such data, refer to “Electric Throttle Body System Calibration in Section 1C”. (After the
completely closed position data is cleared , ECM, for the first time only, opens and closes the throttle valve for about 5
seconds after the ignition switch is turned ON position, for re gistration of the completely closed throttle valve position.
If the engine is started during this registration process, such symptom as “longe r cranking” or “slow rise of revolution
speed immediately after start-up” may occur. However, turning OFF the ignition switch once and restarting will set
correct registration.)
Fuel Cut Control DescriptionS7RS0B1101009
The fuel cut control in the vehicle stop is add ed as follows in order to prevent the over-rev.
Fuel Cut Control Table
4
1
2
17 3 5
6 7
8
9
10
11
12 13
14
15 16
18
I4RS0B110007-02
6. CPU 11. APP sensor (main) signal15. Drive signal of throttle actuator
7. Drive circuit of throttle actuator 12. APP sensor (sub) signal 16. Power supply of throttle actuator
9. From “TH MOT” fuse 13. TP sensor (main) signal 18. Control signal of throttle actuator control relay
10. From main relay 14. TP sensor (sub) signal
Vehicle ConditionOperative Condition
Sto p • Engine r/min > 6,000
• Engine r/min > 4,000 for 180 seconds
Run • Engine r/min > 7,500 (M/T model), Engine r/min > 6,800 (A/T model)

Downloaded from www.Manualslib.com manuals search engine 1A-16 Engine General Information and Diagnosis:
Connector: C37Terminal Wire color Circuit Terminal Wire color Circuit 1 BLU/YEL Fuel injector No.1 output 31 — —
2 BLU/WHT Fuel injector No.2 output 32 — —
3GRN/ORN EGR valve (stepper motor coil
2) output 33 — —
4 GRN/RED EGR valve (stepper motor coil
1) output 34 — —
5 GRN/WHT Ignition coil No.2 and No.3
output 35 — —
6 GRN/YEL Ignition coil No.1 and No.4
output 36 — —
7— — 37— —
8 BRN/WHT Generator field coil monitor
signal 38 — —
9— — 39— —
10 WHT Oxygen signal of HO2S-1 40 WHT TP sensor (sub) signal
11 BRN Oxygen signal of HO2S-2 41 — Ground for shield wire of TP
sensor circuit
12 WHT CAN (low) communication line
(active low signal) to TCM (A/T
model) 42 BLK Ground for TP sensor
13 RED CAN (high) communication line
(active high signal) to TCM (A/
T model) 43 RED
Output for 5 V power source of
TP sensor
14 GRY/RED Output of 5 V power source for
MAP sensor, A/C refrigerant
pressure sensor 44 LT GRN/BLK Output of throttle actuator
15 BLK Ground for ECM 45 LT GRN/RE D Output of throttle actuator
16 BLU/RED Fuel injector No.3 output 46 BLK/RED Heater output of heated
oxygen sensor-1
17 BLU/ORN Fuel injector No.4 output 47 RED/BLU Heater output of heated
oxygen sensor-2
18 BRN/YEL EGR valve (stepper motor coil
4) output 48 YEL/GRN Starting motor signal
19 WHT/RED EGR valve (stepper motor coil
3) output 49 — —
20 RED/YEL CMP sensor signal 50 — G round of ECM for shield wire
21 PNK CKP sensor signal 51 — Ground of ECM for shield wire
22 — — 52 — Ground of ECM for shield wire
23 PNK/BLU Electric load current sensor
signal 53 RED/BLK MAP sensor signal
24 LT GRN ECT sensor signal 54 GRN TP sensor (main) signal
25 BLK/YEL IAT sensor signal 55 ORN Ground for sensors
26 GRN/BLK MAF sensor signal 56 RED Knock sensor signal
27 GRY Ground for MAF sensor 57 YEL Ground for sensors
28 BLU/YEL Generator control signal output 58 BLK/ORN Ground for ECM
29 BLU/BLK EVAP canister purge valve
output 59 YEL/GRN Oil control valve ground
30 BLK Ground for ECM 60 YEL/RED Oil control valve output

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-17
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 Engine General Information and Diagnosis: 1A-25
Step 2: DTC / Freeze Frame Data Check, Record and
Clearance
First, check DTC (including pending DTC), referring to
“DTC Check”. If DTC is indicated, print it and freeze
frame data or write them down and then clear them by
referring to “DTC Clearance”. DTC indicates malfunction
that occurred in the system but does not indicate
whether it exists now or it occurred in the past and the
normal condition has been restored now. To check which
case applies, check the sy mptom in question according
to Step 5 and recheck DTC according to Step 6 and 7.
Attempt to diagnose a trouble based on DTC in this step
only or failure to clear the DTC in this step will lead to
incorrect diagnosis, trouble diagnosis of a normal circuit
or difficulty in troubleshooting.
Step 3 and 4: Visual Inspection
As a preliminary step, be sure to perform visual check of
the items that support proper function of the engine
referring to “Visual Inspection”.
Step 5: Trouble Symptom Confirmation
Based on information obtained in “Step 1: Customer
Complaint Analysis: ” and “Step 2: DTC / Freeze Frame
Data Check, Record and Clearance: ”, confirm trouble
symptoms. Also, reconfirm DTC according to “DTC
Confirmation Procedure” described in each DTC diag.
flow.
Step 6 and 7: Rechecking and Record of DTC /
Freeze Frame Data
Refer to “DTC Check” for checking procedure.
Step 8: Engine Basic Inspection and Engine
Symptom Diagnosis
Perform basic engine check according to “Engine Basic
Inspection” first. When the end of the flow has been
reached, check the parts of the system suspected as a
possible cause referring to “Engine Symptom Diagnosis”
and based on symptoms appearing on the vehicle
(symptoms obtained through steps of customer
complaint analysis, trouble symptom confirmation and/or
basic engine check) and repair or replace faulty parts, if
any.
Step 9: Troubleshooting for DTC (See each DTC
Diag. Flow)
Based on the DTC indicated in Step 6 or 7 and referring
to the applicable DTC diag. flow, locate the cause of the
trouble, namely in a sensor, switch, wire harness,
connector, actuator, ECM or other part and repair or
replace faulty parts. Step 10: Intermittent Problems Check
Check parts where an intermit
tent trouble is easy to
occur (e.g., wire harness, connector, etc.), referring to
“Intermittent and Poor Connec tion Inspection in Section
00” and related circuit of DTC recorded in Step 2.
Step 11: Final Confirmation Test
Confirm that the problem symptom has gone and the
engine is free from any abnormal conditions. If what has
been repaired is re lated to the DTC, clear the DTC once,
perform DTC confirmation procedure and confirm that no
DTC is indicated.
Malfunction Indicator Lamp (MIL) CheckS7RS0B1104002
1) Turn ON ignition switch (with engine at stop) and check that MIL (1) lights.
If MIL does not light up (or MIL dims) but engine can
be starting, go to “MIL Does Not Come ON with
Ignition Switch ON and Engine Stop (but Engine Can
Be Started)” for troubleshooting.
If MIL does not light with ignition switch ON and
engine does not start though it is cranked up, go to
“ECM Power and Ground Circuit Check”.
2) Start engine and check that MIL turns OFF. If MIL remains ON and no DTC is stored in ECM, go
to “Malfunction Indicator Lamp Remains ON after
Engine Starts” for troubleshooting.
1
I4RS0A110012-01

Downloaded from www.Manualslib.com manuals search engine 1A-26 Engine General Information and Diagnosis:
DTC CheckS7RS0B1104003
NOTE
• There are two types of OBD system depending on the vehicle specification.
For details, refer to “Precaution on On-
Board Diagnostic (OBD) System”.
• The MIL is turned on when the ECM and/or TCM detect malfunction(s). Each ECM and
TCM stores diagnostic information as the
diagnostic trouble code (DTC) in its
memory and outputs th e DTC to the scan
tool.
Therefore, check both of the ECM and TCM
for any DTC with the SUZUKI scan tool
because the DTC stored in ECM and TCM
is not read and displayed at a time.
However, each of the ECM and TCM needs
not to be checked with the generic scan
tool because the DTC stored in ECM and
TCM is read and displayed at a time.

Using Scan Tool
1) Prepare OBD generic scan tool or SUZUKI scan tool.
2) With ignition switch turned OFF, connect it to DLC (1) located on underside of instrument panel at
driver’s seat side.
Special tool
(A): SUZUKI scan tool
3) Turn ignition switch ON and confirm that MIL lights.
4) Read DTC, pending DTC and freeze frame data according to instructions displayed on scan tool and
print them or write them down. Refer to scan tool
operator’s manual for further details.
If communication between scan tool and ECM is not
possible, check if scan tool is communicable by
connecting it to ECM in another vehicle. If
communication is possible in this case, scan tool is
in good condition. Then check data link connector
and serial data line (circuit) in the vehicle with which
communication was not possible. If connector and
circuit are OK, check that power supply and ground
circuits of ECM and DLC are in good condition
referring to “ECM Power and Ground Circuit Check”. 5) After completing the check,
turn ignition switch OFF
and disconnect scan tool from data link connector.
Without Using Scan Tool (Hong Kong Model) 1) Turn ignition switch to OFF position.
2) Using service wire, ground diagnosis switch terminal (1) of diagnosis connector (2).
3) Turn ON ignition switch and check DTC displayed on
odometer (3) of combination meter.
When more than 2 DTCs are stored in memory,
blinking for each DTC star ts with the smallest DTC
number in increasing order. Also, DTC is indicated
repeatedly until the ignition switch is turned OFF or
disconnect service wire.
NOTE
When no DTC is detected, display on
odometer of combinatio n meter is “0000”.

4) After completing the check, turn ignition switch to
OFF position and disconnect service wire from
diagnosis connector.
(A)
1
I4RS0B110026-01
21
3
I5RS0C110009-01

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-27
DTC ClearanceS7RS0B1104004
NOTE
There are two types of OBD system
depending on the vehicle specification.
For details, refer to “Precaution on On-Board
Diagnostic (OBD) System”.

Using Scan Tool1) Connect OBD generic scan to ol or SUZUKI scan tool
to data link connector in the same manner as when
making this connection for DTC check.
2) Turn ignition switch OFF and then ON.
3) Erase DTC and pending DTC according to instructions displayed on scan tool. Refer to scan
tool operator’s manual for further details.
4) After completing the clear ance, turn ignition switch
OFF and disconnect scan tool from data link
connector.
NOTE
DTC and freeze frame data stored in ECM
memory are also cleared in the following
cases. Be careful not to clear them before
keeping their record.
• When power to ECM is cut off (by disconnecting battery cable, removing
fuse or disconnecting ECM connectors).
• When the same malfunction (DTC) is not detected again during 40 engine warm-up
cycles. (See “Warm-Up Cycle” of “On-
Board Diagnostic System Description”.)

Without Using Scan Tool (Hong Kong Model)
1) Turn ignition switch to OFF position.
2) Disconnect battery negative cable for specified time below to erase diagnostic trouble code stored in
ECM memory and reconnect it.
Time required to erase DTC
DTC TableS7RS0B1104005
NOTE
• There are two types of OBD system depending on the vehicle specification.
• For details, refer to “Precaution on On-Board Diagnostic (OBD) System”.
• For non-Euro-OBD model, some of DTC No. with delta ( U) mark in the following table can not be
detected by ECM depending on vehicl e specification and local regulation.
• DTC with square ( †) mark in the following table can be detected only for Hong Kong model.
• DTC with circle ( {) mark in the following table can be detected only for Euro OBD model and Hong
Kong model.
• For Euro OBD model, with the generic scan tool, onl y star (*) marked DTC No. in the following table
can be read.
• 1 driving cycle: MIL lights up when DTC is detected during 1 driving cycle.
• 2 driving cycles: MIL lights up when the same DTC is detected also in the next driving cycle after DTC is detected and stored temporarily in the first driving cycle.
• *2 driving cycles: MIL blinks or lights up. Refer to “DTC P0300 / P0301 / P0302 / P0303 / P0304: Random / Multiple
Cylinder Misfire Detected / Cylinder 1 / Cylinder 2 / Cylinder 3 / Cylinder 4 Misfire Detected” for
details.

Ambient temperature Time to cut power to ECM
Over 0 °C (32 ° F) 30 sec. or longer
Under 0 °C (32 °F) Not specifiable.
Select a place with higher
than 0 °C (32 °F)
temperature.
DTC No. Detecting item Detecting condition
(DTC will set when detecting:) MIL
) *P0010 “A” camshaft position actuator
circuit Oil control valve circuit open or short. 1 driving
cycle
) *P0011 “A” camshaft position – timing
over-advanced or system
performance Actual value of advanced va
lve timing does not reach
target value, or valve timi ng is advanced although ECM
command is most retarding. 2 driving
cycles
) *P0012 “A” camshaft position – timing
over-retarded 2 driving
cycles

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-29
) *P0140 O2 sensor (HO2S) circuit no
activity detected (Sensor-2) Output voltage of HO2S-2 is more than specification after
warming up engine. 2 driving
cycles
)
{ *P0171 System too lean Total fuel trim is larger than
specification for specified time
or longer. (Fuel trim towa rd rich side is large.) 2 driving
cycles
)
{ *P0172 System too rich Total fuel trim is smaller th
an specification for specified
time or longer. (Fue l trim toward lean side is large.) 2 driving
cycles
) *P0222 Throttle/pedal position sensor
(sub)/switch “B” circuit low Output voltage of TP sensor (sub) is lower than
specification 1 driving
cycle
) *P0223 Throttle/pedal position sensor
(sub)/switch “B” circuit high Output voltage of TP sensor (sub) is higher than
specification 1 driving
cycle
)
U *P0300 Random/multiple cylinder
misfire detected Misfire of such level as to cause damage to three way
catalyst. *2 driving
cycles
)
U *P0301 /
U *P0302 /
U *P0303 /
U *P0304 Cylinder 1 misfire detected
Cylinder 2 misfire detected
Cylinder 3 misfire detected
Cylinder 4 misfire detected
Misfire of such level as to deteriorate emission but not to
cause damage to three way catalyst.
*2 driving
cycles
) *P0327 Knock sensor 1 circuit low Output voltage of knock sensor is less than specification.1 driving
cycle
) *P0328 Knock sensor 1 circuit high Output volta ge of knock sensor is more than specification.1 driving
cycle
) *P0335 Crankshaft position sensor “A”
circuit No signal of CKP sensor for sp
ecified time even if starting
motor signal is input. 1 driving
cycle
) *P0340 Camshaft position sensor “A”
circuit CMP sensor pulse is out of specification. 1 driving
cycle
) † P0350 Ignition c
oil primary /
secondary circuit Ignition signal is not inputted to monitor circuit 5 times or
more continuously. 1 driving
cycle
)
{ *P0401 Exhaust gas recirculation flow
insufficient detected Difference in intake manifold absolute pressure between
opened EGR valve and closed EGR valve is less than
specification. 2 driving
cycles
)
{ *P0402 Exhaust gas recirculation flow
excessive detected Difference in intake manifold absolute pressure between
opened EGR valve and closed EGR valve is more than
specification. 2 driving
cycles
) *P0403 Exhaust gas recirculation
control circuit Output voltage is different from output command with
more than one pole out of 4 poles. 1 driving
cycle
)
U *P0420 Catalyst system efficiency
below threshold
Output waveforms of HO2S-1 and HO2S-2 are similar. 2 driving
cycles
) *P0443 Evaporative emission system
purge control valve circuit Monitor signal of EVAP canister purge valve is different
from command signal. (circuit open or shorted to ground) 2 driving
cycles
) *P0480 Fan 1 (Radiator cooling fan)
control circuit Monitor signal of radiator cooling fan relay is different from
command signal. 1 driving
cycle
) *P0500 Vehicle speed sensor “A” No VSS signal during fuel cut fo
r specified time or longer,
or VSS signal is not input even if vehicle is driving with
more than specified engine speed and D-range (for A/T
model). 2 driving
cycles
) P0532 A/C refrigerant pressure sensor
“A” circuit low Output voltage of A/C refrigerant pressure sensor is less
than specification.
—
) P0533 A/C refrigerant pressure sensor
“A” circuit high Output voltage of A/C refrigerant pressure sensor is more
than specification.
—
) *P0601 Internal control module
memory check sum error Data write error or check sum error. 1 driving
cycle
) P0602 Control module programming
error Data programming error.
—
) *P0607 Control module performance Data programming error. 1 driving
cycle
)
U *P061

6Starter relay circuit low Starter signal is low voltage even though engine is started
with vehicle at stop. 2 driving
cycles
DTC No. Detecting item
Detecting condition
(DTC will set when detecting:) MIL

Downloaded from www.Manualslib.com manuals search engine 1A-30 Engine General Information and Diagnosis:
)
U *P0617 Starter relay circuit high Starter signal is high voltage for specified time while
engine is running. 2 driving
cycles
) P0620 Generator control circuit Battery voltage is higher than specification even through
generator control is maximum regulation, or battery
voltage is lower than specification even through generator
control is minimum regulation
and electric load is less
than 15 A. —
) P0625 Generator field/F terminal
circuit low Generator field coil duty is
0% (high voltage) for more
than specified time even through generator control is
minimum regulation. —
) P0626 Generator field/F terminal
circuit high Generator field coil duty is
100% (low voltage) for more
than specified time even through generator control is
maximum regulation, or generator field coil duty is 100%
(low voltage) when engine is starting. —
) P1501 Electric load current sensor
circuit low Electric load current is lowe
r than specified value (electric
load current sensor voltage is higher than specified
value). —
) P1502 Electric load current sensor
circuit high Electric load current is higher than specified value
(electric load current sens
or voltage is lower than
specified value). —
)
U *P1510 ECM backup power supply
malfunction Backup power voltage is out of
specification after starting
engine. 1 driving
cycle
) † P1603 TCM trouble code detected When ECM receives a trouble code from TCM, which
indicates that some problem occurred in sensor circuits
and its calculated values used for operations such as idle
speed control, engine power control and so on by TCM,
this DTC is detected by ECM. —
) *P1674 CAN communication (buss off
error) Transmission error that
is inconsistent between
transmission data and transmission monitor (CAN bus
monitor) data is detected more than 7 times continuously. 1 driving
cycle
)
† *P1676 CAN communication (reception
error for TCM) Reception error of communication data for TCM is
detected for longer than specified time continuously. 1 driving
cycle
) P1678 CAN communication (reception
error for BCM) Reception error of communication data for BCM is
detected for longer than specified time continuously.
—
) *P1685 CAN communication (reception
error for ABS/ESP
® control
module) Reception error of communication data for ABS/ESP
®
co

ntrol module is detected for longer than specified time
continuously. 1 driving
cycle
) *P2101 Throttle actuator control motor
circuit range/performance Monitor signal of throttle actuator output (duty output) is
inconsistent with throttle actuator control command. 1 driving
cycle
) *P2102 Throttle actuator control motor
circuit low Power supply voltage of throttle actuator control circuit is
lower than specification even
if throttle actuator control
relay turned on. 1 driving
cycle
) *P2103 Throttle actuator control motor
circuit high Power supply voltage of throttle actuator control circuit is
higher than specification even if throttle actuator control
relay turned off. 1 driving
cycle
) *P2111 Throttle actuator control
system – stuck open Throttle valve default opening is greater than specified
value from complementary closed position when
diagnosing throttle valve at ignition switch turned OFF. 1 driving
cycle
) *P2112 Throttle actuator control
system – stuck closed Throttle valve default opening is smaller than specified
value from complementary closed position when
diagnosing throttle valve at ignition switch turned OFF. 1 driving
cycle
) *P2119 Throttle actuator control throttle
body range/performance Difference between actual throttle valve opening angle
and opening angle calculated by ECM is more than
specification. 1 driving
cycle
) *P2122 Throttle/pedal position sensor/
switch “D” (main) circuit low
input Output voltage of APP sensor (main) is lower than
specification.
1 driving
cycle
DTC No. Detecting item
Detecting condition
(DTC will set when detecting:) MIL