Dtc C1039: Yaw Rate / G Sensor Assembly Internal Failure; Dtc C1040: Stability Control System Function Failure - Suzuki Swift Sport 2004 Service & Repair Manual

DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed?
2 Check DTC
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC.
Is there any DTC(s) other than C1038 and C1090?

DTC C1039: Yaw Rate / G Sensor Assembly Internal Failure

DTC Detecting Condition and Trouble Area
DTC Detecting Condition
Yaw rate / G sensor assembly internal failure is detected. • Yaw rate / G sensor assembly
DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed?
2 DTC check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC.
Are DTC C1034 and/or C1073 detected?
3 Check yaw rate / G sensor assembly
1) Check yaw rate / G sensor assembly referring to "Yaw
Rate / G Sensor Assembly On-Vehicle Inspection".
Is it good condition?

DTC C1040: Stability Control System Function Failure

DTC Detecting Condition and Trouble Area
DTC Detecting Condition
Stability control is active for more than specified time
without yaw rate change.
DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed
2 Check DTC for ESP®
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Turn ignition switch ON and check DTC for ESP®.
Is there any DTC(s) other than C1040?
Action
Action
Action
Electronic Stability Program:
Yes
Go to Step 2.
Go to applicable DTC
diag. flow.
Trouble Area
• 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.
Go to applicable DTC
diag. flow.
4F-39
No
Go to "Electronic
Stability Program
System Check".
Substitute a known-
good steering angle
sensor and recheck. If
DTC C1038 is still
detected, substitute a
known-good ESP®
hydraulic unit control
module assembly and
recheck.
S7RS0B4604035
No
Go to "Electronic
Stability Program
System Check".
Go to step 3.
Substitute a known-
good yaw rate / G
sensor assembly and
recheck.
S7RS0B4604036
No
Go to "Electronic
Stability Program
System Check".
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.