intermittent SUZUKI SWIFT 2008 2.G Service Service Manual

Downloaded from www.Manualslib.com manuals search engine Engine General Information and Diagnosis: 1A-169
DTC Detecting Condition and Trouble Area
DTC Confirmation Procedure1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Keep the accelerator pedal at idle position for 2 seconds.
4) Keep the accelerator pedal at fully depressed position for 2 seconds.
5) Repeat Step 3) and 4) for 3 times.
6) 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
Difference between the opening angle based on TP
sensor (main) and the opening angle based on TP sensor
(sub) is more than specif ication for specified time
continuously.
(1 driving detection logic) • Throttle position sensor (main) and (sub) circuit
• Electric throttle body
•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 Throttle position sensor and its circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch, check each voltage of “TP Sensor 1 Volt” and “TP Sensor 2 Volt” displayed on scan
tool when accelerator pedal is idle position and fully
depressed.
Is displayed each TP sensor value as described voltage in
“Scan Tool Data”? Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
Go to Step 3.
3 ECM voltage check
1) Disconnect connector from electric throttle body with
ignition switch turned OFF.
2) Check for proper connection to electric throttle body at “RED”, “GRN”, “WHT” and “BLK” wire terminals.
3) If OK, measure voltage between “RED” wire terminal of electric throttle body connector and engine ground with
ignition switch turned ON.
Is voltage 4 – 6 V? Go to Step 6.
Go to Step 4.
"GRN"
"RED"
"WHT"
"BLK"
"LT GRN/BLK"
"LT GRN/RED"
I4RS0B110022-02

Downloaded from www.Manualslib.com manuals search engine 1A-172 Engine General Information and Diagnosis:
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 APP sensor and its circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ON ignition switch.
3) Check each voltage of “APP Sensor 1 Volt” and “APP Sensor 2 Volt” displayed on scan tool when accelerator
pedal is idle position and fully depressed.
Is displayed each APP sensor value as described voltage in
“Scan Tool Data”? Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00”.
Go to Step 3.
3 ECM voltage check
1) Disconnect connector from APP sensor with ignition
switch turned OFF.
2) Check for proper connection to APP sensor at “BRN”, “GRN”, “BLU”, “RED”, “YEL” and “WHT” wire terminals.
3) If OK, measure voltage between “BRN” wire terminal of APP sensor connector and vehicle body ground,
between “RED” wire terminal of APP sensor connector
and vehicle body ground with ignition switch turned ON.
Is each voltage 4 – 6 V? Go to Step 6.
Go to Step 4.
4 Wire harness check
1) Disconnect connectors from ECM with ignition switch
turned OFF.
2) Check for proper connection of ECM connector at “E23- 35” and “E23-34” terminals.
3) If OK, measure resistance between “E23-35” terminal of ECM connector and engine ground, between “E23-34”
terminal of ECM connector and engine ground.
Is each resistance infinity? Go to Step 5.
“BRN” wire or “RED”
wire is shorted to other
circuit.
5 Wire harness check
1) Measure voltage between “E23-35” terminal of ECM
connector and engine ground, between “E23-34”
terminal of ECM connector and engine ground with
ignition switch turned ON.
Is each voltage 0 V? Substitute a known-
good ECM and recheck.
“BRN” wire or “RED”
wire is shorted to other
circuit.
"GRN"
"BLU"
"BRN"
"YEL"
"WHT"
"RED"
I4RS0B110048-01

Downloaded from www.Manualslib.com manuals search engine 4E-9 ABS:
Step 1: Malfunction Analysis
Customer complaint analysis
Record details of the problem (failure, complaint) and how it occurred as described by the customer.
For this purpose, use of such a questionnaire form as shown in the following will facilitate collec ting information to the
point required for proper analysis and diagnosis. Customer questionnaire (Example)
6
) Check for intermittent problem
1) Check intermittent troubles referring to “Intermittent and
Poor Connection Inspection in Section 00” and related
circuit of trouble code recorded in Step 1.
Does trouble recur? Go to Step 4.
Go to Step 7.
7 ) Final confirmation test
1) Perform “Step 7: Final Confirmation Test: ”.
Does trouble recur? Go to Step 3.
End.
Step
Action YesNo
I2RH01450014-01

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-10
Problem symptom confirmation
Check if what the customer claimed in “Customer
Questionnaire” is actually found in the vehicle and if that
symptom is found, whether it is identified as a failure.
(This step should be shared with the customer if
possible.) Check warning lights related to brake system
referring to “EBD Warning Light (Brake Warning Light)
Check” and “ABS Warning Light Check”.
DTC check, record and clearance
Perform “DTC Check” proced ure, record it and then
clear it referring to “DTC Clearance”.
Recheck DTC referring to “DTC Check”.
When DTC which is recorded at DTC check procedure is
detected again after performi ng DTC clearance, go to
“Step 4: ABS Check: ” to proceed the diagnosis.
When DTC which is recorded at DTC check procedure is
not indicated anymore after performing DTC clearance,
ABS control module does not perform the system
diagnosis, or temporary abnormality may occur,
therefore go to “Step 2: Driving Test: ” to proceed the
diagnosis.
Step 2: Driving Test
Test drive the vehicle at 40 km/h for more than a minute
and check if any trouble symptom (such as abnormal
lighting of ABS warn ing light) exists.
If the malfunction DTC is co nfirmed again at ignition
switch ON, driving test as described is not necessary.
Proceed to Step 3.
Step 3: DTC Check
Recheck DTC referring to “DTC Check”.
Step 4: ABS Check
According to ABS Check for the DTC confirmation in
Step 3, locate the cause of the trouble, namely in a
sensor, switch, wire harness, connector, actuator
assembly or other part and repair or replace faulty parts.
Step 5: Brakes Diagnosis
Check the parts or system suspected as a possible
cause referring to “Brakes Symptom Diagnosis in
Section 4A” and based on symptoms appearing on the
vehicle (symptom obtained through Steps 1 and 2 and
repair or replace faulty parts, if any).
Step 6: Check for Intermittent Problem
Check parts where an intermittent trouble is easy to
occur (e.g., wire harness, con nector, etc.), referring to
“Intermittent and Poor Connection Inspection in Section
00” and related circuit of trouble code recorded in Step 1
to 3.
Step 7: Final Confirmation Test
Confirm that the problem symptom has gone and the
ABS is free from any abnormal conditions. If what has
been repaired is related to the malfunction DTC, clear
the DTC once referring to “DTC Clearance” and perform
test driving and confirm that no DTC is indicated.ABS Warning Light CheckS7RS0B4504002
1) Turn ignition switch ON.
2) Check that ABS warning light (1) comes ON for
about 2 seconds and then goes off.
If any faulty condition is found, advance to “ABS
Warning Light Does Not Come ON at Ignition Switch
ON” or “ABS Warning Light Comes ON Steady”.
EBD Warning Light (Brake Warning Light)
Check
S7RS0B4504003
NOTE
Perform this check on a level place.

1) Turn ignition switch ON with parking brake applied.
2) Check that EBD warning lig ht (brake warning light)
(1) is turned ON.
3) Release parking brake with ignition switch ON and check that EBD warning lig ht (brake warning light)
goes off.
If it doesn’t go off, go to “EBD Warning Light (Brake
Warning Light) Comes ON Steady”.
11
I4RS0A450007-01
BRAKE
1
I4RS0A450008-01

Downloaded from www.Manualslib.com manuals search engine ABS: 4E-26
DTC TroubleshootingStep Action Yes No 1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check”.
2 1) Check connection of connectors of all control modules communicating by means of CAN.
2) Recheck DTC.
Is DTC U1073 indicated? Go to Step 3. Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00” in related manual.
3 1) Turn ignition switch to OFF position.
2) Disconnect connectors of all control modules communicating by means of CAN.
3) Check CAN communication circuit between control modules for open, short and high resistance.
Is each CAN communication circuit in good condition? Go to Step 4. Repair insulation of
CAN communication
line circuit referring to
“Precaution for CAN
Communication System
in Section 00” in related
manual.
4 1) Turn ignition switch to OFF position.
2) Connect connector of disconnected control modules communicating by means of CAN.
3) Disconnect connector from any one of control modules other than BCM and ABS control module.
4) Recheck ABS contro l module for DTC.
IS DTC U1073 detected? Disconnected
connectors of control
modules other than the
one whose connector is
disconnected in Step 3)
one by one and check
that DTC U1073 is
detected by ABS control
module each time
connector is
disconnected.
When DTC U1073 is not
detected by ABS
module while checking
in this way, go to
description under “NO”
below. If DTC U1073 is
detected by ABS control
module, go to Step 5.Check power and
ground circuit of control
module disconnected in
Step 3) circuit is OK,
substitute a know-good
control module
disconnected in Step 3)
and recheck.
5 1) Substitute a know-good BCM and recheck ABS control module for DTC.
IS DTC U1073 detected? Substitute a know-good
ABS control module and
recheck.
End.

Downloaded from www.Manualslib.com manuals search engine 4E-27 ABS:
DTC U1100: Lost Communication with ECM (Reception Error)S7RS0B4504019
Wiring Diagram
Refer to “DTC U1073: Control Module Communication Bus Off”.
DTC Detecting Condition
Reception error of communication data for ECM is detected more than specified time continuously.
DTC Troubleshooting Step Action Yes No 1 Was “ABS Check” performed? Go to Step 2. Go to “ABS Check”.
2 1) Check DTC for ABS.
Is DTC U1073 detected? Go to “DTC U1073:
Control Module
Communication Bus
Off”.Go to Step 3.
3 1) Check DTC for ECM. Is DTC P1674 detected? Go to “DTC P1674:
CAN Communication
(Bus Off Error) in
Section 1A”.Go to Step 4.
4 1) Check connection of connectors of all control modules communicating by means of CAN.
2) Check DTC for ABS.
Is DTC U1100 detected? Go to Step 5. Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection
Inspection in Section
00” in related manual.
5 1) Turn ignition switch to OFF position.
2) Disconnect connectors of ABS control module and ECM
communicating by means of CAN.
3) Check CAN communication circuit between ABS control module and ECM for open, short and high resistance.
Is CAN communication circuit in good condition? Go to Step 6. Repair or replace the
CAN communication
line.
6 1) Disconnect connectors of all control modules communicating by means of CAN.
2) Check CAN communication circuit between control modules other than Step 5 for open, short and high
resistance.
Is each CAn communication circuit in good condition? Go to Step 7. Repair or replace the
CAN communication
line.
7 1) Turn ignition switch to OFF position. 2) Connect connector of disconnected control modules communicating by means of CAN.
3) Disconnect connector from any one of control modules other than BCM and ABS control module.
4) Recheck ABS contro l module for DTC
IS DTC U1100 detected? Disconnected
connectors of control
modules other than the
one whose connector is
disconnected in Step 3)
one by one and check
that DTC U1100 is
detected by ABS control
module each time
connector is
disconnected.
When DTC U1100 is not
detected by ABS
module while checking
in this way, go to
description under “NO”
below. If DTC U1100 is
detected by ABS control
module, go to Step 8.Check power and
ground circuit of control
module disconnected in
Step 3) circuit is OK,
substitute a know-good
control module
disconnected in Step 3)
and recheck.

Downloaded from www.Manualslib.com manuals search engine 4F-12 Electronic Stability Program:
Diagnostic Information and Procedures
Electronic Stability Program System CheckS7RS0B4604001
Refer to the following items for the details of each step.
Step 1: Malfunction Analysis
Customer complaint analysis
Record details of the problem (failure, complaint) and how it occurred as described by the customer.
For this purpose, use of such a questionnaire form as shown in the following will facilitate collec ting information to the
point required for proper analysis and diagnosis. Step Action Yes No
1 ) Malfunction analysis
1) Perform “Customer complaint analysis: ”.
2) Perform “Problem symptom confirmation: ”.
3) Perform “DTC check, record and clearance: ” and recheck DTC.
Is there any malfunction DTC? Go to Step 4. Go to Step 2.
2 ) Driving test
1) Perform “Step 2: Driving Test: ”.
Is trouble symptom identified? Go to Step 3. Go to Step 6.
3 ) DTC check
1) Perform “DTC Check”.
Is it malfunction code? Go to Step 4. Go to Step 5.
4 ) ESP ® check
1) Inspect and repair referring to applicable DTC flow.
Does trouble recur? Go to Step 5. Go to Step 7.
5 ) Brakes diagnosis
1) Inspect and repair referring to “Brakes Symptom Diagnosis in Section 4A”.
Does trouble recur? Go to Step 3. Go to Step 7.
6 ) Intermittent problem check
1) Check intermittent troubles referring to “Intermittent and
Poor Connection Inspection in Section 00” and related
circuit of trouble code recorded in Step 1.
Does trouble recur? Go to Step 4. Go to Step 7.
7 ) Final confirmation test
1) Perform “Step 7: Final Confirmation Test: ”.
Does trouble recur? Go to Step 3. End.

Downloaded from www.Manualslib.com manuals search engine 4F-14 Electronic Stability Program:
Step 2: Driving Test
Test the vehicle at 40 km/h for more than a minute including left and right turns and check if any trouble symptom
(such as ESP ® warning lamp and/or ABS warning lamp) exists.
If the malfunction DTC is confirmed at ignition switch ON, proceed to Step 3.
If the malfunction DTC is not confirmed at ignition switch ON, proceed to Step 6.
Step 3: DTC Check
Recheck DTC referring to “DTC Check”.
Step 4: ESP ® Check
According to ESP ® Check for the DTC confirmation in Step 3, locate the cause of the trouble, namely in a sensor,
switch, wire harness, connector, actuator assembly or other part and repair or replace faulty parts.
Step 5: Brakes Diagnosis
Check the parts or system suspected as a possible cause referring to “Brakes Symptom Diagnosis in Section 4A” and
based on symptoms appearing on the vehicle (symptom obtain ed through Steps 1 and 2 and repair or replace faulty
parts, if any).
Step 6: Intermittent Problem Check
Check parts where an intermittent trouble is easy to occur (e.g., wire harness, connector, etc.), referring to
“Intermittent and Poor Connection Inspection in Section 00” and related circuit of trouble code recorded in Step 1 to 3.
Step 7: Final Confirmation Test
Confirm that the problem symptom has gone and the ESP ® is free from any abnormal conditions. If what has been
repaired is related to the malfunction DTC, clear the DTC once referrin g to “DTC Clearance” and perform test driving
and confirm that no DTC is indicated.
ESP ® Warning lamp CheckS7RS0B4604022
1) Turn ignition switch ON.
2) Check that ESP ® warning lamp (1) comes ON for
about 2 seconds and then goes off.
If any faulty condition is found, advance to “ESP ®
Warning Lamp Does Not Come ON at Ignition Switch
ON” or “ESP ® Warning Lamp Comes ON Steady”.
ABS Warning Lamp CheckS7RS0B4604046
1) Turn ignition switch ON.
2) Check that ABS warning lamp (1) comes ON for
about 2 seconds and then goes off.
If any faulty condition is found, advance to “ABS
Warning Lamp Does Not Come ON at Ignition Switch
ON” or “ABS Warning Lamp Comes ON Steady”.
1
I6RS0B460009-01
11
I4RS0A450007-01

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-21
Stability control (ACTIVE, INACTIVE): This indicates
stability control in acti vation / deactivation.
TCS control (brake) ( ACTIVE, INACTIVE): This
indicates brake function of TCS in activation /
deactivation.
TCS control (engine) (ACTIVE, INACTIVE): This
indicates torque control of TCS in activation /
deactivation. ESP®
off state (cont) (ESP ® ON, ESP ® OFF): State
of ESP ® OFF switch.
Steering angle Sen (Neutral, NON newtral): This
indicates steering wheel angle measured by steering
angle sensor is in straight-ahead or not.
Visual InspectionS7RS0B4604059
Check the following parts and systems visually.
ESP ® Warning Lamp Does Not Come ON at Ignition Switch ONS7RS0B4604008
Wiring Diagram
Circuit Description
Operation (ON/OFF) of ESP ® warning lamp is controlled by ESP ® control module through lamp driver module in
combination meter.
If ESP ® system is in good condition, ESP ® control module turns ESP ® warning lamp ON at the ignition switch ON,
keeps it ON for 2 seconds and then turns it OFF. If an abnormality in the system is detected, ESP ® warning lamp is
turned ON continuously by ESP ® control module. Also, it is turned ON continuously by lamp driver module when the
connector of ESP ® control module is disconnected.Inspection Item Referring section
Battery Level, leakage “Battery Description in Section 1J”
Connectors of electric wire
harness Disconnection, friction“Intermittent and Poor Connec
tion Inspection in Section
00”
Fuses Burning
Brake fluid Level, leakage “Brake Fluid Level Inspection in Section 4A”
Other parts that can be checked visually
[A] 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
WHTGRN
3
E85-13
E85-44REDWHT6 5E46-1E46-2
4 10
6
E85-16
E85-47BLKBLK
8
9
BLK/ORN
REDWHT
REDWHT
G37-4G37-2
G28-10G28-8
G28-16
12V
12VE85-32E85-1
E85-35
WHT/REDWHT/BLU
GRN/ORN
6
2
1
7 1112[B]
G37
E46124
53
67
891011121314124
53
67
891011
1213141516171819202122
[C] G28
12345678910111213141516
17181920212223242526272829303132
G28-31
RED/BLK
I6RS0B460010-01
[A]: ESP ® control module connector (viewed from terminal side) 3. Ignition switch 8. ESP ® warning lamp
[B]: BCM connector (viewed from harness side) 4. Junction block assembly 9. Lamp driver module
[C]: Combination meter connector (viewed from harness side) 5. BCM (included in junction
block assembly) 10. ESP
® hydraulic unit / control module assembly
1. Battery 6. CAN driver 11. Junction connector
2. Main fuse box 7. Combination meter 12. To steering angle sensor

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-45
DTC C1073: Lost Communication With Yaw Rate / G Sensor AssemblyS7RS0B4604038
Wiring Diagram
DTC Detecting Condition and Trouble Area
DTC Troubleshooting
[A]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
E85-29E85-25
E85-37
E85-31
E84-3
E84-5
E84-2E84-1 12V
GRN/BLK
BLU/RED
WHT/BLK
RED/BLK [B]
E843
521
46
1
2 3
2
I7RS0B460010-01
[A]: ESP ® control module connector (viewed from
terminal side) 1. Yaw rate / G sensor assembly 3. ESP
® hydraulic unit control module assembly
[B]: Yaw rate / G sensor assembly connector (viewed from harness side) 2. CAN driver (for yaw rate / G
sensor assembly)
DTC Detecting Condition Trouble Area
CAN line communication error in ESP ® control module
and yaw rate / G sensor assembly is detected. • CAN communication circuit (for yaw rate / G sensor
assembly)
• Yaw rate / G sensor assembly
• ESP ® control module
Step Action YesNo
1 Was “Electronic Stability Pr ogram Check” performed? Go to Step 2.Go to “Electronic
Stability Program
System Check”.
2 Check each control module connectors
1) Check connection of connectors of all control modules
communicating by means of CAN (for yaw rate / G
sensor assembly).
2) Check DTC for ESP ®.
Is DTC C1073 detected? Go to Step 4.
Check for intermittent
trouble 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 ESP ® control module and yaw
rate / G sensor assembly.
Is each CAN communicati on circuit between ESP
® control
module and yaw rate / G sensor assembly opened, shorted
or high resistance? Repair or replace the
CAN communication
line.
Go to Step 5.