Suzuki GRAND VITARA 2005 Service Manual page 407

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?
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?
12V
1
BLU/WHT
E53-7
Action
Electronic Stability Program:
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.
Go to Step 4.
Substitute a known-
good ESP® hydraulic
unit / control module
assembly and recheck.
S5JB0B4604064
[A]
E53
32 1
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.
Replace ESP® OFF
switch.
"BLU/WHT" wire circuit
short to ground.
4F-30
I6JB01460018-01