Dtc C1027: Esp Off Switch Circuit Failure - Suzuki GRAND VITARA JB416 Service Manual

4F-29 Electronic Stability Program:
Step
3 Check sensor calibration
1) Calibrate steering angle sensor referring to "Sensor
Calibration: ".
2) Clear all DTC(s) and check DTC for ESP®.
Is DTC C1024 still detected?
4 Check steering angle sensor
1) Check steering angle sensor referring to "Steering Angle
Sensor On-Vehicle Inspection: ".
Is it good condition?
DTC C1027: ESP® OFF Switch Circuit Failure
Wiring Diagram
BLK
[A]: ESP® control module connector (viewed from terminal side)
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
Mechanical switch failure, failure in switch wiring is
shorted to ground.
DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed?
2 Check ESP® OFF switch condition
®
Is ESP OFF switch is OFF condition?
Action
12V
1
BLU/WHT E53-7
Action
Yes
Go to Step 4.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
2
1. ESP® OFF Switch 2. ESP® hydraulic unit control module assembly
• ESP® OFF switch
• ESP® OFF switch circuit
• ESP® control module
Yes
Go to Step 2.
Go to Step 3.
No
Steering angle sensor
calibration was
incompleted.
Replace steering angle
sensor.
S5JB0E4604030
[A]
E53
1
32
17
33 2
18
34 3
19
35 4
20
36 5
21
37 6
22
38 7
23
39 8
24
40 9
25
41 10
26
42 11
27
43 12
28
44 13
29
45 14
30
46 15
31
47 16
Trouble Area
No
Go to "Electronic
Stability Program
Check: ".
ESP® OFF switch
turned OFF condition
and recheck.
I6JB01460018-01