module can SUZUKI SWIFT 2008 2.G Service Owner's Manual

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-31
Fail-Safe TableS7RS0B1104006
When any of the following DTCs is detected, ECM enters fail-safe mode as long as malfunction continues to exist but
that mode is canceled when ECM de tects normal condition after that.
)
*P2123 Throttle/pedal position sensor/
switch “D” (main) circuit high
input Output voltage of APP sensor (main) is higher than
specification.
1 driving
cycle
) *P2127 Throttle/pedal position sensor/
switch “E” (sub) circuit low
input Output voltage of APP sens
or (sub) is lower than
specification. 1 driving
cycle
) *P2128 Throttle/pedal position sensor/
switch “E” (sub) circuit high
input Output voltage of APP sensor (sub) is higher than
specification.
1 driving
cycle
) *P2135 Throttle/pedal position sensor/
switch “A”/“B” (main / sub)
voltage correlation Difference between the opening angle based on TP
sensor (main) and the opening angle based on TP sensor
(sub) is more than specification.
1 driving
cycle
) *P2138 Throttle/pedal position sensor/
switch “D”/“E” (main / sub)
voltage correlation Difference between the opening angle based on APP
sensor (main) and the opening angle based on APP
sensor (sub) is more
than specification. 1 driving
cycle
)
U *P2227 Barometric pressure circuit
range/performance Difference of barometric pressure value and intake
manifold pressure value is
more than specification at
engine start. 2 driving
cycles
) *P2228 Barometric pressure circuit low Barometric pressure sens
or voltage is less than
specification. 1 driving
cycle
) *P2229 Barometric pressure circuit
high Barometric pressure sensor voltage is more than
specification. 1 driving
cycle
) P1614 Transponder response error
Refer to “Diagnostic Trouble Code (DTC) Table in Section
10C”. —

) P1615 ID code does not registered
(vehicle equipped with keyless
start system only)
) P1616 Different registration ID codes
(vehicle equipped with keyless
start system only)
) P1618 CAN communication error
(reception error for keyless
start control module) (vehicle
equipped with keyless start
system only)
) P1621 Immobilizer communication
line error
) P1622
EEPROM error
) P1623 Unregistered transponder
) P1625 Immobilizer antenna error
) P1636 Immobilizer information
registration failure
) P1638 Immobilizer information
mismatched
DTC No. Detecting item
Detecting condition
(DTC will set when detecting:) MIL
DTC No.
Detected item Fail-safe operation
) P0031 HO2S heater control circuit low (Sensor-1)
ECM stops air/fuel ratio control.
) P0032 HO2S heater control circuit high (Sensor-1)
) P0102 Mass or volume air flow circuit low input • ECM controls injector drive time (fuel injection
volume) according to throttle valve opening
(closed throttle position or not).
• ECM stops EGR control.
)
P0103 Mass or volume air flow circuit high input
) P0112 Intake air temperature sensor 1 circuit low ECM controls actuators assuming that intake air
temperature is 20 °C (68 ° F).
) P0113 Intake air temperature sensor 1 circuit high

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-47
MIL Does Not Come ON with Ignition Switch ON and Engine Stop (but Engine Can Be Started)S7RS0B1104011
Wiring Diagram
Circuit Description
When the ignition switch is turned ON, ECM causes the main relay to turn ON (close the contact point). Then, ECM
being supplied with the main power, transmits indication ON si gnal of MIL to combination meter in order to turn MIL
ON. And then, combination meter turns MIL ON. When the engine starts to run and no malfunction is detected in the
system, ECM transmits MIL indication OFF signal to combination meter in order to turn MIL OFF. And then,
combination meter turns MIL OFF, but if a malfunction was or is detected, MIL remains ON even when the engine is
running.
G281234567
8
910
11
1213141516
1718
19
20
212223242526272829303132
[B]
[A]
E23 C37
34
1819
567
10
11
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 331
1213
238
34
1819
567
10
11
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 331
12
13
238
BLK/WHT
BLK/RED
BLK/RED
BRN/WHT
BLK/REDWHTBLK/YEL
GRN
12V 5V
2
3
8
6 7
E23-29
E23-3
E23-1
E23-60
E23-18
E23-16
1014
14
12
11
RED/BLK
C37-58
C37-15
C37-30
BLK
E23-31
BLK
BLK/ORNBLK/ORN
4
WHTREDWHTRED
BLK/ORN
G28-16
15
13
14
1414
G28-31
BLK/YEL
BLK/YEL
WHTRED
WHTRED
WHTREDC37-13 C37-12
WHTRED
9
17
5 1 16
I7RS0B110012-02
[A]: ECM connector (viewed from harness side)
6. “METER” fuse13. TCM (A/T model)
[B]: Combination meter connector (viewed from harness side) 7. ECM14. CAN communication line
1. Main fuse box 8. Junction block assembly15. ABS/ESP® control module
2. Ignition switch 9. BCM16. CAN junction connector (ESP® model)
3. Main relay 10. “FI” fuse17. Combination meter
4. Malfunction indicator lamp in combination meter 11. Individual circuit fuse box No.1
5. “IG COIL” fuse 12. “IG ACC” fuse

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-129
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure
WARNING!
• When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
• Road test should be carried out by 2 persons, a driver and a tester.

1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Warm up engine to normal operating temperature.
4) M/T model
a) Drive vehicle at 4000 rpm (e ngine speed) with 3rd gear.
b) Release accelerator pedal and with engine brake applied, keep vehicle coasting for 6 sec. or more (fuel cut condition for 5 sec. or more) and stop vehicle.
A/T model
a) Drive vehicle at more than 3000 rpm for 10 sec.
5) Check pending DTC and DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC detecting condition Trouble area
• Vehicle speed signal is not input while fuel is cut at deceleration for 4 seconds continuously at 3600 rpm or
less.
• Vehicle speed signal is not input even if engine is running with more than 3000 rpm at D-Range for 4 sec. (A/T model).
(2 driving cycle detection logic) • Wheel speed sensor and/or its circuit
• ABS/ESP®
control module
•ECM
Step Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 Vehicle speed signal check
Is vehicle speed displayed on scan tool in Step 4) and 5) of
“DTC Confirmation Procedure”? Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.Go to Step 3.
3 DTC check in ABS/ESP ® control module
1) Check ABS/ESP ® control module for DTC.
Is there any DTC of wheel speed sensor or CAN
communication system? Go to applicable DTC
diag. flow.
Substitute a know-good
ECM and recheck.

Downloaded from www.Manualslib.com manuals search engine 1A-134 Engine General Information and Diagnosis:
DTC P0601 / P0602 / P0607: Internal Control Module Memory Check Sum Error / Control Module
Programming Error / Control Module Performance
S7RS0B1104054
System Description
Internal control module is installed in ECM.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure 1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it at idle if possible.
4) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC detecting condition Trouble area
DTC P0601:
Data write error or check sum error
(1 driving cycle detection logic)
DTC P0602:
Data programming error
(1 driving cycle detection logic but MIL does not light up)
DTC P0607:
ECM internal processor error
(1 driving cycle detection logic) • ECM power supply circuit and/or
ground circuit
•ECM
Step Action YesNo
1 DTC recheck
1) Clear DTC referring to “DTC Clearance”.
2) Turn OFF ignition switch.
3) Turn ON ignition switch and check DTC.
Is DTC P0601 or P0 607 still indicated? Go to Step 2.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
2 ECM reprogramming check
Was reprogramming of ECM executed? Execute reprogramming
of ECM correctly once
again.Go to step 3.
3 ECM power and ground circuit check
1) Check that ECM power supply circuit and ECM ground
circuit is in good condition referring to “ECM Power and
Ground Circuit Check”.
Are check results OK? Substitute a known-
good ECM and recheck.
Repair ECM power or
ground circuit.

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-145
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC P1674: CAN Communication (Bus Off Error)S7RS0B1104062
Wiring Diagram
ESP ® model
Step Action Yes No
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2. Go to “Engine and
Emission Control
System Check”.
2 DTC check
1) Check DTC of TCM referring to “DTC Check in Section
5A”.
Is there any DTC(s)? Go to applicable DTC
diag. flow.
Substitute a known-
good ECM and recheck.
[F]
E85
161
15
2
3
4
5
6
7
8
9
10
11
12
13
14
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
3233
34
35
36
37
38
39
40
41
42
43
44
45
46
47
[D] 12345678910
11
141516
36 34 33 32 31 30 29 24 23
37
181920
G49
[A]
E23
C37
34
1819
567
10
11
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 331
1213
238
34
1819
567
10
11
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 331
12
13
238
[C]G28
1234567
8
910
11
1213141516
1718
19
20
212223242526272829303132
[E] G54
109 321
[B]
G37E46
1234567 1234567
8910
11
8910
11
121314 121314
1516171819202122
4
6 1
2
3
REDWHT
REDWHT
REDWHT
REDWHT
REDWHT
E23-3E23-18
E85-42E85-46
E85-13E85-44
E46-1E46-2
G37-4G37-2
REDWHT
REDWHTG49-19G49-18
5
7
WHTG54-9REDG54-10
G28-8G28-10
G28-7REDG28-9WHT
I7RS0B110014-02
[A]: ECM connector (viewed from harness side)
1. ECM
[B]: BCM connector (viewed from harness side) 2. ESP® control module
[C]: Combination meter connector (viewed from harness side) 3. BCM
[D]: Keyless start control module connector (vie wed from harness side) 4. Steering angle sensor
[E]: Steering angle sensor connector (viewed from harness side) 5. Combination meter
[F]: ESP ® control module connector (viewed from terminal side) 6. Keyless start control module
7. CAN junction connector

Downloaded from www.Manualslib.com manuals search engine 1A-146 Engine General Information and Diagnosis:
Non ESP® model
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure 1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
REDWHTE03-6E03-12
6
3
7
REDWHT
1
[B]
[A]
G37E46
1234567
1234567
891011
891011
121314 121314
151617
18
19202122 [D]65
1615 14131211 43
2423 2122 10 9 8 7
21
1920 1817
C3417 16
26 2515 14
65 3
42
13 12
23 2224 1110 9
212019 87
18
1
C35
[E]
REDWHTC37-13C37-12REDWHTC34-17C34-7
2
1234567891011
141516
36 34 33 32 31 30 29 24 23
37
181920
[C] [F]
G49
E23-3E23-18
4
REDWHTG28-7G28-9REDWHTG49-19G49-18
5
REDWHTE03-10E03-8
G37-4G37-2
REDWHTE46-1E46-2REDWHTREDWHTG28-8G28-10
RED/BLKWHT/BLKG37-3G37-1
E03
15
16
17
18
19
20
21
22
23
24
25 2
3
4
5
6
7
8
9
10
11
12
1
13
14
26
E23C37
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 33 1
1213
238
34
1819
567
1011
17
20
47 46
495051
2122
52 16
25 9
24
14
29
5557 54 53
59
60 58 2
262728
15
30
56 4832 31
34353637
4042 39 38
44
45 43 41 331
1213
238
G281234567
8
910111213141516
1718
19
20
212223242526272829303132
I6RS0C110027-01
[A]: BCM connector (viewed from harness side) 1. ECM
[B]: ECM connector (viewed from harness side) 2. TCM (A/T model)
[C]: Combination meter connector (viewed from harness side) 3. BCM
[D]: TCM connector (viewed from harness side) 4. Combination meter
[E]: Keyless start control module connector (viewed from harness side) 5. Keyless start control module
[F]: ABS control module connector (viewed from harness side) 6. ABS control module
DTC detecting conditionTrouble area
Transmission error that is inconsistent between
transmission data and transmission monitor (CAN bus
monitor) data is detected more than 7 times continuously.
(1 driving detection logic) •ECM
•BCM
• ABS/ESP®
control module
• TCM (A/T model)
• Keyless start control module
• Combination meter
• Steering angle sensor (ESP ® model)
• CAN communication circuit

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-147
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

Step Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 Control module connector check
1) Check connection of connectors of all control module/
sensor communicating by means of CAN.
2) Recheck DTC.
Is DTC P1674 detected? Go to Step 3.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
3 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control module/sensor
communicating by means of CAN.
3) Check CAN communication circuit between control module/sensor for open, short and high resistance.
Is each CAN communication circuit in good condition? Go to Step 4.
Repair circuit.
4 DTC check of ECM
1) Turn ignition switch to OFF position.
2) Connect connectors of di sconnected control module/
sensor communicating by means of CAN.
3) Disconnect connector from any one of control module/ sensor other than BCM and ECM.
4) Recheck ECM for DTC.
Is DTC P1674 detected? Disconnect connectors
of control module/
sensor other than the
one whose connector is
disconnected in Step 3)
one by one and check
that DTC P1674 is
detected by ECM each
time connector is
disconnected. When
DTC P1674 is not
detected by ECM while
checking in this way, go
to description under
“NO” below. If DTC
P1674 is detected by
ECM, go to Step 5.Check power and
ground circuit of control
module disconnect in
Step 3). If circuit is OK,
substitute a known-
good control module
disconnected in Step 3)
and recheck.
5 DTC check of ECM
1) Substitute a known-good BCM and recheck ECM for
DTC.
Is DTC P1674 detected? Substitute a known-
good ECM and recheck.
End.

Downloaded from www.Manualslib.com manuals search engine 1A-148 Engine General Information and Diagnosis:
DTC P1676: CAN Communication (Reception Error for TCM)S7RS0B1104064
Wiring Diagram
Refer to “DTC P1674: CAN Communication (Bus Off Error)”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC detecting condition Trouble area
Reception error of communication data for TCM is
detected for longer than specified time continuously.
(1 driving detection logic) •ECM
• TCM (for A/T model)
• CAN communication circuit
Step
Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 Check CAN communication error for ECM
1) Check ECM for DTC.
Is there DTC P1674? Go to “DTC P1674:
CAN Communication
(Bus Off Error)”.
Go to Step 3.
3 ECM and TCM connector check
1) Check for proper connection at each ECM and TCM
connector terminals with ignition switch turned OFF.
2) If connections are OK, recheck ECM for DTC with engine running.
Is there DTC P1676? Go to Step 4.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
4 DTC check in TCM
1) Check DTC P1774 in TCM.
Is it indicated? Go to “DTC P1774:
CAN Communication
Bus Off in Section 5A”.
Go to Step 5.
5 CAN communication circuit check
1) Disconnect connectors of ECM and TCM.
2) Check CAN communication circuit between ECM and
TCM connectors for open, short and high resistance.
Is each CAN communication circuit in good condition? Go to Step 6.
Repair circuit.
6 DTC check of ECM
1) Connect connectors to ECM and TCM with ignition
switch turned.
2) Check ECM for DTC.
Does ECM communicate with control module other than
TCM (i.e. DTC P1678 and/or P1685 are not detected)? Substitute a known-
good TCM and recheck.
Substitute a known-
good ECM and recheck.

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-149
DTC P1678: CAN Communication (Reception Error for BCM)S7RS0B1104065
Wiring Diagram
Refer to “DTC P1674: CAN Communication (Bus Off Error)”.
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC.
DTC Troubleshooting
NOTE
• When measuring circuit voltage, resistance and/ or pulse signal at ECM connector, connect the
special tool to ECM and/or the ECM connectors re ferring to “Inspection of ECM and Its Circuits”.
• Upon completion of inspection and repair work, perform “DTC Confirmation Procedure” and confirm that the trouble has been corrected.

DTC detecting condition Trouble area
Reception error of communication data for BCM is
detected for longer than specified time continuously.
(1 driving detection logic but MIL does not light up) •ECM
• ABS/ESP®
control module
•BCM
• CAN communication circuit
Step Action YesNo
1 Was “Engine and Emission Control System Check”
performed? Go to Step 2.
Go to “Engine and
Emission Control
System Check”.
2 CAN communication error check for ECM
1) Check ECM for DTC.
Is there DTC P1674? Go to “DTC P1674:
CAN Communication
(Bus Off Error)”.
Go to Step 3.
3 ECM, ABS control module and BCM connector check
1) Check for proper connecti on at each ECM, ABS/ESP®
control module and BCM connector terminals with
ignition switch turned OFF.
2) If connections are OK, recheck ECM for DTC with engine running.
Is there DTC P1678? Go to Step 4.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
4 DTC check in BCM
1) Check DTC U1073 in BCM.
Is it indicated? Go to “DTC U1073 (No.
1073): Control Module
Communication Bus Off
in Section 10B”.Go to Step 5.
5 DTC check of ABS/ESP ® control module
1) Check DTC U1073 in ABS/ESP ® control module.
Is it indicated? Go to “DTC U1073:
Control Module
Communication Bus Off
in Section 4E”.Go to Step 6.

Downloaded from www.Manualslib.com manuals search engine 1A-150 Engine General Information and Diagnosis:
DTC P1685: CAN Communication (Reception Error for ABS/ESP® Control Module)S7RS0B1104066
Wiring Diagram
Refer to “DTC P1674: CAN Communication (Bus Off Error)”
DTC detecting Condition and Trouble Area
DTC confirmation procedure
1) Connect scan tool to DLC with ignition switch turned OFF.
2) Turn ON ignition switch and clear DTC by using scan tool.
3) Start engine and run it for 1 min. or more.
4) Check DTC. 6
CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connectors fo rm ECM, BCM and ABS/ESP®
control modules.
3) Check CAN communication circuit for open, short or high resistance.
• Between ECM and ABS/ESP ® control module
• Between ECM and BCM
Is each CAN communication circuit in good condition? Go to Step 7. Repair circuit.
7 DTC check in ECM
1) Connect connectors to ECM, BCM and ABS/ESP ®
control module with ignition switch turned.
2) Check ECM for DTC.
Does ECM communicate with control module other than
BCM (i.e. DTC P1676 and/or DTC P1685 are not detected)? Substitute a known-
good BCM and recheck.
Substitute a known-
good ECM and recheck.
Step
Action YesNo
DTC detecting condition Trouble area
Reception error of communication data for ABS/ESP ®
control module is detected for longer than specified time
continuously.
(1 driving cycle detection logic) •ECM
• ABS/ESP®
control module
• CAN communication circuit