Dtc C1017 / C1023: Lateral G Sensor / Yaw Rate Sensor; Dtc C1020 / C1028: Master Cylinder Pressure Sensor Power Supply Failure / Circuit - Suzuki SX4 Service Manual
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Also See for SX4:
- Owner's manual (47 pages) ,
- Owner's manual (16 pages) ,
- Owner's manual (18 pages)
Table of Contents
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4F-32 Electronic Stability Program:
DTC C1017 / C1023: Lateral G Sensor / Yaw Rate Sensor
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
C1017:
• Lateral G sensor signal is out of specified range.
• Vehicle behavior and lateral G sensor signal is
disagreed.
C1023:
• Yaw rate sensor signal is out of range.
• Vehicle behavior and yaw rate signal is disagreed.
DTC Troubleshooting
Step
1
Was "Electronic Stability Program Check" performed?
2
DTC check for ESP®
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ESP®.
Are DTC U0073 and/or U0123 detected?
3
Check yaw rate / G sensor
1) Check yaw rate / G sensor referring to "Yaw Rate / G
Sensor On-Vehicle Inspection".
Is it good condition?
DTC C1020 / C1028: Master Cylinder Pressure Sensor Power Supply Failure / Circuit
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
DTC C1020:
Power supply voltage to master cylinder pressure sensor
is too high or low in ESP® hydraulic unit / control module
assembly.
DTC C1028:
• Master cylinder pressure sensor circuit is opened,
shorted to power or ground circuit in ESP® control
module.
• Master cylinder pressure sensor signal is out of
specified range in ESP® control module.
DTC Troubleshooting
Step
1
Was "Electronic Stability Program Check" performed?
2
Check ESP® hydraulic unit / control module assembly
power and ground circuit
1) Check that ESP® hydraulic unit / control module
assembly power supply circuit and ground circuit is in
good condition referring to "ESP® Hydraulic Unit /
Control Module Assembly Power and Ground Circuit
Check".
Are check results OK?
Action
Action
Trouble Area
• Yaw rate / G sensor
• ESP® control module
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
Trouble Area
• ESP® control module
Yes
Go to Step 2.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
S7RW0A4604017
No
Go to "Electronic
Stability Program
Check".
Go to Step 3.
Substitute a known-
good yaw rate / G
sensor and recheck.
S7RW0A4604018
No
Go to "Electronic
Stability Program
Check".
Repair ESP® hydraulic
unit / control module
assembly power or
ground circuit.
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Troubleshooting
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Questions and answers
Adjust throttle motor
The idle speed on a Suzuki SX4 should be controlled by the Idle Air Control Valve (IACV) rather than adjusting the idle screw on the throttle body, as the screw is factory set. Before using compressed air in the idle-air-bypass passages, the IACV should be removed to prevent damage to its delicate mechanism. If there is an issue with idle speed, checking the IACV function and referring to the SX4 service manual is recommended.
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I have an issue of crank but not starting When I scan it brought this codeU0100 Which means no communication thou crank sensor wire was cut off but it was fix back What could be wrong and what could be the solution,
increasing revs when changing gears
The Suzuki SX4 may have increasing revs when changing gears due to its drive-by-wire system and the difference in final drive ratios between the manual (4.41) and automatic (2.81) transmissions. This difference causes high cruising RPMs in the manual version and sluggishness in the automatic. Additionally, if the revs climb while going uphill, it may be due to the transmission downshifting or kicking out of overdrive. Other possible causes include low transmission fluid, abuse, or a faulty transmission design.
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