ESP data list SUZUKI SWIFT 2008 2.G Service Workshop Manual

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-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

Downloaded from www.Manualslib.com manuals search engine 1A-212 Engine General Information and Diagnosis:
Troubleshooting
WARNING!
Keep hands, tools, and clothing away from engine cooling fan to help prevent personal injury. This fan
is electric and can come on whether or not the engi ne is running. The fan can start automatically in
response to the ECT sensor with the ig nition switch at the “ON” position.

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”.

StepAction YesNo
1 Is there DTC(s) of ECT sensor circuit (DTC P0116 / P0117 /
P0118) and/or radiator cooling fan circuit (DTC P0480)? Go to corresponding
DTC flow.Go to Step 2.
2 Low speed radiator cooling fan control circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Start engine and select “DATA LIST” mode on scan tool.
3) Warm up engine until coolant temp. is 97.5 °C, 207.5 °F
or higher and A/C switch turns OFF (if equipped with A/
C). (If engine coolant temp. dose not rise, check engine
cooling system or ECT sensor.)
Is radiator cooling fan started at low speed when engine
coolant temp. reached above temp.? Radiator cooling fan low
speed control system is
in good condition.
Perform from Step 2 to
Step 8 in DTC P0480
diag. flow. If OK, Go to
Ste p 3.
3 Radiator cooling fan control check
1) Disconnect radiator cooling fan control relays No. 2, and
No. 3 from individual circuit fuse box No.1 with ignition
switch turned OFF.
2) Run engine when ECT is over 97.5 °C, 207.5 °F.
3) Measure voltage between vehicle body ground and “BLU/RED” wire terminal of disconnected radiator
cooling fan motor connector.
Is voltage 10 – 14 V? Go to Step 4.
“BLU/RED” wire is open
or high resistance
circuit.
4 Check radiator cooling fan wire circuit check
1) Turn ignition switch to OFF position.
2) Measure resistance between “BLK” wire terminal of
disconnected radiator coolin g fan motor connector and
vehicle body ground.
Is resistance below 1
Ω? Go to Step 5. “BLK” wire is open or
high resistance circuit.
5 Radiator cooling fan check
1) Check radiator cooling fan referring to “Radiator Cooling
Fan Motor On-Vehicle Inspection in Section 1F”.
Is it in good condition? Substitute a known-
good ECM and recheck.
Faulty radiator cooling
fan.

Downloaded from www.Manualslib.com manuals search engine 1A-214 Engine General Information and Diagnosis:
Troubleshooting
WARNING!
Keep hands, tools, and clothing away from engine cooling fan to help prevent personal injury. This fan
is electric and can come on whether or not the engi ne is running. The fan can start automatically in
response to the ECT sensor with the ig nition switch at the “ON” position.

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”.

StepAction YesNo
1 Is there DTC(s) of ECT sensor circuit (DTC P0116 / P0117 /
P0118) and/or radiator cooling fan circuit (DTC P0480)? Go to corresponding
DTC flow.Go to Step 2.
2 Low speed radiator cooling fan control circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Start engine and select “DATA LIST” mode on scan tool.
3) Warm up engine until coolant temp. is 97.5 °C, 207.5 °F
or higher and A/C switch turns OFF (if equipped with A/
C). (If engine coolant temp. dose not rise, check engine
cooling system or ECT sensor.)
Is radiator cooling fan started at low speed when engine
coolant temp. reached above temp.? Go to Step 3.
Perform from Step 2 to
Step 5 in “Radiator
Cooling Fan Low Speed
Control System Check”.
3 High speed radiator cooling fan control circuit check
1) Start engine and select “DATA LIST” mode on scan tool.
2) Warm up engine until coolant temp. is 102.5 °C, 216.5 °F
or higher and A/C switch turns OFF (if equipped with A/
C). (If engine coolant temp. dose not rise, check engine
cooling system or ECT sensor.)
Is radiator cooling fan started at high speed when engine
coolant temp. reached above temp? Radiator cooling fan
control system is in
good condition.
Perform from Step 9 to
Step 14 in DTC P0480
diag. flow.
If OK, Go to Step 4.
4 Radiator cooling fan control No. 2 and No. 3 check
1) Run engine when ECT is over 102.5 °C, 216.5 °F.
2) Measure voltage between vehicle body ground and “E23-48” terminal of ECM connector.
Is voltage lower than 1.5 V? Go to Step 5.
Faulty ECM.
5 Radiator cooling fan No. 2 wire circuit check
1) Remove radiator cooling fan control relay No.2 with
ignition switch turned OFF.
2) Measure voltage between “GRY” wire terminal of disconnected radiator cooling fan control relay No. 2
connector and vehicle body ground.
Is voltage 10 – 14 V? Go to Step 6.
“GRY” wire is open or
high resistance circuit.
6 Radiator cooling fan No. 2 wire circuit check
1) Disconnect connector from radiator cooling fan motor
with ignition swit ch turned OFF.
2) Measure resistance between “BLU/BLK” wire terminal of disconnected radiator cooling fan control relay No. 2
connector and vehicle body ground.
Is resistance infinity? Go to Step 7.
“BLU/BLK” wire is
shorted to ground
circuit.

Downloaded from www.Manualslib.com manuals search engine 4F-62 Electronic Stability Program:
4) Turn ignition switch to ON position and select menu “DATA LIST” mode of SUZUKI scan tool. Refer to
scan tool operator's manual for further derails.
5) When brake pedal is released, check “Master Cyl Press” under “DATA LIST” of SUZUKI scan tool.
If pressure is out of specification, replace ESP ®
hydraulic unit / cont rol module assembly.
Master cylinder pressure specification
Brake pedal released: 0 ± 0.8 MPa (0 ± 8 kg/cm2, 0
± 113 psi)
6) Hoist vehicle and remove right-side front wheel.
7) Connect special tool with rubber hose (1) to Front brake caliper bleeder plug (2).
Special tool
(A): 09956–02311
8) When bleeder plug loosen and depress brake pedal to make special tool gauge reading 10 MPa (100 kg/
cm
2, 1422 psi), check “Master Cyl Press” under
“DATA LIST” of SUZUKI scan tool.
If pressure displayed on SUZUKI scan tool is out of
specification, replace ESP ® hydraulic unit / control
module assembly.
Master cylinder pressure specification
Brake pedal depressed 10 MPa (100 kg/cm2, 1422
psi): 10 ± 1.2 MPa (100 ± 12 kg/cm2, 1422 ± 170
psi)
9) After completing the check, turn ignition switch to
OFF position and disconnect SUZUKI scan tool from
DLC.
10) Tighten bleeder plug and bleed air from brake system, referring to “Air Bleeding of Brake System in
Section 4A”.
Yaw Rate / G Sensor Assembly On-Vehicle
Inspection
S7RS0B4606017
Lateral G Inspection
1) Calibrate yaw rate / G sens or assembly referring to
“Sensor Calibration”.
2) Park and level the vehicle with parking brake and fix wheels with chokes.
3) Check yaw rate / G sensor assembly installation
condition. 4) Connect SUZUKI scan tool to data link connector
(DLC) (1) with ignition switch OFF.
Special tool
(A): SUZUKI scan tool
5) Turn ignition switch to ON position and select menu “DATA LIST” mode of SUZUKI scan tool. Refer to
scan tool operator's manual for further derails.
6) Check “G Sensor (lateral)” under “DATA LIST” of SUZUKI scan tool in the following vehicle conditions.
• Level condition
• Right-up condition
• Left-up condition
If Lateral G condition is ou t of specification, replace
yaw rate / G sensor assembly.
Lateral G sp ecification
2
(A)
1
I6JB01460025-01
Vehicle condition G Sensor (lateral)
Level condition 0 ± 0.1 G
Right-up condition 0.1 ± 0.1 G
Left-up condition –0.1 ± 0.1 G
[A]: Right-up condition “a”: Approx 350 mm (13.78 in.)
[B]: Left-up condition 1. Safety stand
(A)
1
I4RS0B450003-01
[A]
[B]“a”
1
“a”1
I6RS0B460039-02

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-63
Yaw Rate Inspection1) Calibrate yaw rate / G sens or assembly referring to
“Sensor Calibration”.
2) Check yaw rate / G sensor assembly installation
condition.
3) Connect SUZUKI scan tool to data link connector (DLC) (1) with ignition switch OFF.
Special tool
(A): SUZUKI scan tool
4) Turn ignition switch to ON position and select menu
“DATA LIST” mode of SUZUKI scan tool. Refer to
scan tool operator's manual for further derails.
5) Check “Yaw rate sensor” under “DATA LIST” of SUZUKI scan tool in the following vehicle conditions.
• Parking condition
• Drive vehicle in right turning condition with steering wheel fully turned
• Drive vehicle in left tu rning condition with steering
wheel fully turned
If yaw rate condition is ou t of specification, replace
yaw rate / G sensor assembly.
Yaw rate specification
NOTE
• Drive the vehicle on level ground and at 10 km/h (6.2 mph).
• Minimum turning radius is 5.2 m (17.1 ft).

Yaw Rate / G Sensor Assembly Removal and
Installation
S7RS0B4606018
CAUTION!
• When yaw rate / G sensor assembly is replaced, ESP ® control module needs zero
calibration. Perform zero calibration by
SUZUKI scan tool referring to “Sensor
Calibration”.
• Regarding yaw rate / G sensor assembly removal/installation, confirm specified
torque and never use impact wrench to
avoid damage.
• When handling the yaw rate / G sensor assembly, be careful not to drop it or apply
an impact to it.
If an excessive impact was applied, never
attempt disassembly or repair but replace
it with a new one.

Vehicle condition Yaw rate
Parking 0 ± 4 deg/s
Right turning 30 ± 4 deg/s
Left turning –30 ± 4 deg/s
(A)
1
I4RS0B450003-01
[A]: Right turning“a”: Approx 5.2 m (17.1 ft.)
[B]: Left turning
[A]
[B] “a”
“a”
I6RS0B460040-02

Downloaded from www.Manualslib.com manuals search engine Electronic Stability Program: 4F-65
2) Turn ignition switch to ON position and select menu
“DATA LIST” mode of SUZUKI scan tool.
Refer to scan tool operator's manual for further
derails.
3) Check “Steering angle Sen” under “DATA LIST” of SUZUKI scan tool in th e following steering wheel
conditions.
• Front wheels in straight-ahead position
• Rotate steering wheel a round in clockwise (counter clockwise) from straight-ahead position
If steering angle condition is out of specification,
replace steering angle sensor.
Steering angle Specification
Steering Angle Sensor Removal and InstallationS7RS0B4606021
Refer to “Steering Angle Sensor Removal and
Installation in Section 6B”.
Steering Angle Sensor InspectionS7RS0B4606022
• Check sensor for dents, cracks or deformation.
• Check sensor connector (sensor side and harness
side) and sensor connector lock mechanism for
damage or crack.
• Check connector terminals for bend, corrosion or rust.
If it is found faulty, replace steering angle sensor (1).
ESP ® OFF Switch Removal and InstallationS7RS0B4606023
Removal
1) Disconnect negative (–) cable at battery.
2) Remove rear console box referring to “Console Box Components in Section 9H”.
3) Disconnect ESP ® OFF switch coupler.
4) Remove ESP ® OFF switch (1) from rear console
box (2).
Installation
Reverse removal procedure.
ESP ® OFF Switch InspectionS7RS0B4606024
Check for continuity between terminals at each switch
position.
If check result is not as specified, replace ESP ® OFF
switch.
Vehicle condition Steering angle
Front wheels in straight-
ahead position 0
± 3 °
Rotate steering wheel a
round in clockwise 360
± 3°
Rotate steering wheel a
round in counterclockwise –360
± 3 °
I6JB01460032-01
1
I6JB01460033-01
[A]: Free [B]: Push
1
I6RS0B460042-02
[A]
[B]2345
2
3
4
1
5
I6RS0B460043-02

Downloaded from www.Manualslib.com manuals search engine 6C-46 Power Assisted Steering System:
P/S Control Module Removal and InstallationS7RS0B6306011
Removal1) Disconnect negative cable at battery.
2) Remove console box.
3) Disconnect connectors (1) from P/S control module (2).
4) Disconnect connector from yaw rate / G sensor
(ESP ® model).
5) Remove P/S control module (2) with bracket (3) from floor panel.
6) Separate P/S control module and bracket.
Installation
Reverse removal procedure for installation noting the
following.
• Tighten each screw to the specified torque. Tightening torque
P/S control module bracket screw (ABS model)
(a): 9 N·m (0.9 kgf-m, 6.5 lb-ft)
P/S control module bracket screw (ESP ® model)
(a): 7 N·m (0.7 kgf-m, 5.0 lb-ft)
P/S control module mounting screw (b): 5 N·m (
0.5 kgf-m, 3.7 lb-ft)
Torque Sensor and Its Circuit InspectionS7RS0B6306012
1) Remove console box.
2) With ignition switch turned OFF, connect scan tool to DLC or connect voltage tester between “E52-18” –
“E52-9” (main sensor) or “E52-6” – “E52-9” (sub
sensor) with connected connector (1) to P/S control
module. 3) Set torque wrench to stee
ring wheel referring to
“Steering Force Check” for checking steering force.
4) Turn ON ignition switch without engine running and select scan tool “Data list” mode due to check of
“TQS Main Torque”, “TQS Sub Torque” and “Assist
Torque” display on scan tool when steering wheel
turned left and right (if used).
5) Check that characteristic of torque sensor (main and sub) output voltage or scan tool data and steering
force is as following graph when steering wheel is
turned left and right. If sensor voltage or scan tool
data is out of specified value or does not vary linearly
as the following graph, check P/S control module
and its circuit.
If they are OK, replace steering gear case assembly.
1
(a)
2
3
(b)
I7RS0A630020-01
[A]: Steering force at left turn
[B]: Steering force at right turn
[C]: Steering wheel at free
[D]: “TQS Main Torque”, “TQS Sub Torque” and “Assist Torque” in “Data List” displayed on scan tool
E52
18
9
6
9
6 18
1
I6RS0C630024-01
I3RM0A630022-01
0
[C] [N.m]
MAX MAX
[B]
[A]
2.33 - 2.68 [V]
[D]
0.65 - 0.72
(0 - 0.4)
4.21 - 4.41
(5.1 - 5.6)
6.86
-6.86
0
6.86
- 6.86
I6RS0C630021-04