Dtc C1028: Master Cylinder Pressure Sensor Circuit Failure - Suzuki Grand Vitara 2011 Manual

4F-30 Electronic Stability Program:
DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed?
2 Check ESP® OFF switch condition
®
Is ESP OFF switch is OFF condition?
3 Check ESP® OFF switch
1) Turn ignition switch to OFF position.
2) Remove ESP® OFF switch referring to "ESP® OFF
Switch Removal and Installation".
3) Check for proper connection at each terminal of ESP®
OFF switch.
4) If OK, then check ESP® OFF switch referring to "ESP®
OFF Switch Inspection".
Is it good condition?
4 Check ESP® OFF switch circuit
1) Disconnect ESP® control module connector.
2) Check for proper connection to ESP® control module
connector at "E53-7" terminal.
3) If OK, then check resistance between "E53-7" terminal
and vehicle body ground.
Is resistance infinity?

DTC C1028: Master Cylinder Pressure Sensor Circuit Failure

DTC Detecting Condition and Trouble Area
DTC Detecting Condition
Input signal voltage from master cylinder pressure sensor
in ESP® control module is too high or low.
DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed?
2 Check brake system
1) Check brake system as follows.
• Leakage or air in the hydraulic brake system
• Clearance between brake pad and disc too high
Are they in good condition?
3 Check sensor calibration
1) Calibrate master cylinder pressure sensor referring to
"Sensor Calibration".
2) Clear all DTC(s) and recheck DTC.
Is DTC C1028 still detected?
Action
Action
Yes
Go to Step 2.
Go to Step 3.
Go to Step 4.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
Trouble Area
• Leakage or air in the hydraulic brake system
• Clearance between brake pad and disc too high
Yes
Go to Step 2.
Go to Step 3.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
No
Go to "Electronic
Stability Program
Check".
ESP® OFF switch
turned OFF condition
and recheck.
Replace ESP® OFF
switch.
"BLU/WHT" wire circuit
is shorted to ground.
S6JB0A4604020
No
Go to "Electronic
Stability Program
Check".
Repair, replace or
adjust.
Master cylinder
pressure sensor
calibration was
incompleted.