Dtc C1021, C1022 / C1025, C1026 / C1031, C1032 / C1035, C1036: Wheel Speed Sensor Circuit Or Encoder Failure - Suzuki Swift Sport 2004 Service & Repair Manual

4F-32 Electronic Stability Program:
DTC C1021, C1022 / C1025, C1026 / C1031, C1032 / C1035, C1036: Wheel Speed Sensor Circuit or
Encoder Failure
DTC C1021 / C1025 / C1031 / C1035: Right-Front / Left-Front / Right-Rear / Left-Rear Wheel Speed
Sensor Circuit Failure
DTC C1022 / C1026 / C1032 / C1036: Right-Front / Left-Front / Right-Rear / Left-Rear Wheel Speed
Sensor or Encoder Failure
Wiring Diagram
WHT
1
BLK
WHT
2
BLK
WHT
3
BLK
WHT
4
BLK
[A]: ESP® control module connector (viewed from
terminal side)
1. Left-front wheel speed sensor
DTC Detecting Condition and Trouble Area
DTC Detecting Condition
DTC C1021, C1025, C1031, C1035:
Wheel sensor signal is out of specified range.
DTC C1022, C1026, C1032, C1036:
Abnormal wheel speed sensor signal is detected.
NOTE
When the vehicle was operated in any of the following ways, one of these DTCs may be set even when
the sensor is in good condition. If such possibility is suspected, clear DTC once referring to "DTC
Clearance" and then performing the driving test as described in Step 2 of "Electronic Stability Program
System Check", check whether or not any abnormality exists.
• The vehicle was driven with parking brake pulled.
• Wheel spin occurred while driving.
• Wheel(s) was turned while the vehicle was jacked up.
• The vehicle was stuck.
DTC Troubleshooting
Step
1 Was "Electronic Stability Program Check" performed?
E85-14
RED
RED/BLK
E85-15
E85-3
WHT
WHT/BLK
E85-2
E85-5
LT GRN
LT GRN/BLK
E85-6
E85-12
YEL
BRN
E85-11
2. Right- front wheel speed sensor
3. Left-rear wheel speed sensor
Action
5
12V
12V
12V
12V
4. Right-rear wheel speed sensor
5. ESP® hydraulic unit / control module assembly
Trouble Area
• Wheel speed sensor
• Wheel speed sensor circuit
• Wheel encoder
• ESP® control module
Yes
Go to Step 2.
S7RS0B4604051
[A]
E85
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
I6RS0B460016-01
No
Go to "Electronic
Stability Program
System Check".