ESP SUZUKI SWIFT 2006 2.G Service Owner's Guide

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 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-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

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-151
TroubleshootingStep 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 in 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 ABS/ESP ® control module connector check
1) Check for proper connection at each ECM and ABS/ ESP® control module connector terminals with ignition
switch turned OFF.
2) If connections are OK, recheck ECM for DTC with engine running.
Is there DTC P1685? Go to Step 4.
Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
4 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” (Non-
ESP®
model) or “DTC
U1073: Control Module
Communication Bus Off
in Section 4F” (ESP ®
module). Go to Step 5.
5 CAN communication circuit check
1) Turn ignition switch to OFF position.
2) Disconnect connector s form ECM and ABS/ESP ®
control module.
3) Check CAN communication circuit between ECM and ABS/ESP ® control module for open, short or high
resistance.
Is each CAN communication circuit in good condition? Go to Step 6.
Repair circuit.
6 DTC check in ECM
1) Connect connectors to ECM and ABS/ESP ® control
module with ignition switch turned.
2) Check ECM for DTC.
Does ECM communicate with control module other than
ABS/ESP
® control module (i.e. DTC P1676 and/or DTC
P1678 are not detected)? Substitute a known-
good ABS/ESP
®
control module and
recheck. Substitute a known-
good ECM and recheck.

Downloaded from www.Manualslib.com manuals search engine 1A-206 Engine General Information and Diagnosis:
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”.
• When A/C evaporator outlet air temp. is below 2.5 °C (36.5 °F), A/C remains OFF (“E23-47” terminal
voltage becomes 10 – 14 V). This condition is not abnormal.

Step Action YesNo
1 Reception data check from BCM
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch.
3) Check DTC for reception data from BCM.
Is there DTC P1678? Go to applicable DTC
diag. flow.
Go to Step 2.
2 A/C switch signal circuit check
1) Start engine and select “DATA LIST” mode on scan tool.
2) Check A/C switch signal under following conditions
respectively.
A/C switch signal
Engine running, A/C switch OFF: OFF
Engine running, A/C switch ON and blower speed
selector turned 1st position or more: ON
Is check result satisfactory? Go to Step 3. Check A/C switch
circuit.
3 DTC check of ECT sensor circuit
1) Check ECM for DTC of ECT sensor circuit.
Is there DTC P0116, DTC P0117 or DTC P0118? Go to applicable DTC
diag. flow.
Go to Step 4.
4 Radiator cooling fan control system check
Is radiator cooling fan started when A/C and blower speed
selector switch are turned ON with engine running? Go to Step 10. Go to Step 5.
5 Radiator cooling fan control circuit check
1) Check DTC with scan tool.
Is DTC P0480 displayed? Go to “DTC P0480: Fan
1 (Radiator Cooling
Fan) Control Circuit”.
Go to Step 6.

Downloaded from www.Manualslib.com manuals search engine 1A-208 Engine General Information and Diagnosis:
11A/C compressor relay circuit check
1) Measure voltage between “E23-47” wire terminal of
ECM connector and vehicle body ground under following
conditions respectively.
Voltage between “E23-47” terminal of ECM
connector and ground
While engine running and A/C switch turned OFF: 10
– 14 V
While engine running, A/C and blower speed
selector switch turned ON: 0 – 1 V
Is check result satisfactory? Go to Step 12. Go to Step 13.
12 A/C compressor relay check
1) Check A/C compressor rela y referring to “Compressor
Relay Inspection in Sectio n 7B” or “Compressor Relay
Inspection in Section 7B”.
Is it in good condition? A/C compressor drive
circuit malfunction.
Replace A/C
compressor relay.
13 A/C compressor relay circuit check
1) Remove A/C compressor re lay with ignition switch
turned OFF.
2) Turn ON ignition switch, measure voltage between “BLK/ RED” wire terminal of A/C compressor relay connector
and vehicle body ground.
Is voltage 10 –14 V? Go to Step 14. “BLK/RED” wire is open
circuit.
14 A/C compressor relay check
1) Check A/C compressor rela y referring to “Compressor
Relay Inspection in Sectio n 7B” or “Compressor Relay
Inspection in Section 7B”.
Is it in good condition? “GRY” wire is open
circuit. If OK, substitute
a known-good ECM and
recheck.
Replace A/C
compressor relay.
Step Action Yes No

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-209
Electric Load Signal Circuit CheckS7RS0B1104085
Wiring Diagram
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 referri ng to “Inspection of ECM and Its Circuits”.

BLK/WHT
BLK/RED
WHT
BRN/WHT
12V5V
11
BLK/YELBLK/YEL
BLK/YEL
BLKBLKBLK
BLK/ORN
10
18
17
BLU/WHT
15
WHTRED
43
YEL
5
13
BLK/WHT
BLKBLK/YEL
GRN
WHT
/BLU
BLU
16
2
6
7
12
8
9
BLK
WHT
RED
E23-29
E23-60
E23-1E23-16
E23-9
E23-3E23-18
C37-58C37-15
E23-31C37-30
BLK/RED
[A]
[B]
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
1
14
I7RS0B110016-01
[A]: Manual A/C model
6. Ignition switch13. Blower motor
[B]: Auto A/C model 7. Junction block assembly14. HVAC control module
1. Main fuse 8. “IG COIL” fuse15. Blower speed selector
2. Individual circuit fuse box No.1 9. “IG2 SIG” fuse16. Electric load (rear defogger signal and headlight signal), etc.
3. “IG ACC” fuse 10. ECM17. BCM
4. “FI” fuse 11. Main relay18. ABS/ESP® control module
5. “HTR FAN” fuse 12. Blower motor relay
StepAction YesNo
1 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch and check DTC.
Is there any DTS(s) related to CAN? Go to applicable DTC
diag. flow.
Go to Step 2.

Downloaded from www.Manualslib.com manuals search engine 1A-210 Engine General Information and Diagnosis:
2Electric load signal circuit check
1) Start engine and select “Data List” mode on scan tool.
2) Check electric load signal under following conditions
respectively.
Blower fan signal (Manual A/C model)
Blower speed selector turned OFF or 1st position:
OFF
Blower speed selector turned to 2nd position or
more: ON
Blower fan signal (Auto A/C model)
Blower speed selector OFF or 4th position or less:
OFF
Blower speed selector turned to 6th position or
more: ON
Radiator fan signal
Engine coolant temperature is lower than 95 °C (103
° F): OFF
Engine coolant temperature is higher than 97.5 °C
(207.5 °F): ON
Electric load signal
Engine running, rear defogger switch, small light or
headlight switch OFF: OFF
Engine running, rear defogger switch, small light or
headlight switch ON: ON
Is check result satisfactory? Electric load signal
circuit is in good
condition.
Check defective signal
circuit.
Step Action Yes No