DTC code

Description

C1201

Wheel Speed Sensor, left Front: Scope, Performance, Intermittent Fault

C1202

Wheel Speed Sensor, Left Front: Invalid / No Signal

C1203

Wheel Speed Sensor, Right Front: Open / Short

C1204

Wheel Speed Sensor, Right Front: Scope, Performance, Intermittent Fault

C1205

Wheel Speed Sensor, Right Front: Invalid / No Signal

C1206

Wheel Speed Sensor, Left Rear: Open / Short

C1207

Wheel Speed Sensor, Left Rear: Scope, Performance, Intermittent Fault

C1208

Wheel Speed Sensor, Left Rear: Invalid / No Signal

C1209

Wheel Speed Sensor, Right Rear: Open / Short

C1210

Wheel Speed Sensor, Right Rear: Scope, Performance, Intermittent Fault

C1211

Wheel Speed Sensor, Right Rear: Invalid / No Signal

C1213

Wheel Speed Sensor Frequency Error (general wheel speed sensor fault, slip or tooth error)

Note

This manual is only for the left front wheel speed sensor fault diagnosis, other sensor diagnostic methods are similar.
Please refer to the "left Front wheel Speed Sensor Fault Diagnosis."

Brake System

ABS / TCS / EBD / ESP

6-89

Schematic:

CA13

CA13

CA13

CAN H

CAN L

IF13

EF21

EF20

CA13

CA13

CA13

32

26

13

38

CA13

CA13

14

17

IP12

7

1

25

SO30

2

SO30

1

SO28

2

SO28

1

CA26

2

CA26

1

CA07

2

CA07

1

CA13

19

CA13

31

CA13

33

CA13

20

CA13

18

CA13

6

CA13

34

CA13

22

Datalink 
Connector

ABS Control Module

Right Rear 
Wheel Speed 
Sensor

Left Rear 
Wheel Speed 
Sensor

Right Front 
Wheel Speed 
Sensor

Left Front 
Wheel Speed 
Sensor

FE06-5604b

Diagnostic Steps:

Step 1

Check the left front wheel speed sensor harness connector.

(a)

Check whether the left front wheel speed sensor wiring
harness connector is connected correctly.

No

Properly connect harness connectors.

Yes

Step 2

Check the left front wheel speed sensor installation.

(a)

Check whether the left front wheel speed sensor is installed
correctly.

Tightening Torque: 19 Nm (Metric) 14 lb-ft (US English)

No

Correctly install the left front wheel speed
sensor.

Yes

Step 3

Check the left front wheel speed sensor.

6-90

ABS / TCS / EBD / ESP

Brake System

Left Front Wheel Speed Sensor Harness 
Connector CA07

FE06-5610b

(a)

With a multimeter measure the left front wheel speed sensor
according to the table below.

(b)

Confirm the voltage and current is complied with the standard
value.

Note

Turn the wheel with hand when measuring.

Warning!

Do not place finger into a rotating wheel, otherwise, it
may result in personal injury.

Wheel Speed Sensor

Description

Sensor Type

Hall Type Speed Sensor

Signal Current

Low: 7 ± 20% mA, High: 14
± 20% mA

Gap Between The Sensor
and The Signal Plate

Front Axle 1.56 mm (0.061
in); Rear Axle 0.738 mm
(0.029 in)

Yes

Go to step 5

No

Step 4

Check the left front wheel speed sensor and ABS control module wiring harness.

1

25

38

13

37

36

35

34

33

32

31

30

29

28

27

14 15 16 17 18 19 20 21 22 23 24

12

11

10

9

8

7

6

5

4

3

2

26

ABS/ESP Harness Connector CA13

FE06-5607b

(a)

Disconnect the left front wheel speed sensor harness
connector.

(b)

Disconnect the ABS control module harness connector.

(c)

Measure resistance between the connector CA13 terminal 34
and CA07 terminal 2 with a multimeter.

(d)

Measure resistance between the connector CA13 terminal 22
and CA07 terminal 1 with a multimeter.
Standard Resistance: Less than 1 Ω

(e)

Measure resistance between the connector CA13 terminals
34, 22 and the body ground.
Standard Resistance:10 kΩ or higher

Is the resistance specified value?

No

Repair or Replace the wiring harness

Brake System

ABS / TCS / EBD / ESP

6-91

Left Front Wheel Speed Sensor Harness 
Connector CA07

FE06-5610b

Yes

Step 5

Check the left front wheel speed sensor.

(a)

Confirm that there is no short circuit between the sensor
terminals with a multimeter.

(b)

Resistance between the sensor two terminals and the body
ground are infinity.

Is the resistance specified value?

No

Replace the left front wheel speed sensor

Yes

Step 6

Check the left front wheel speed sensor probe.

(a)

Remove the left front wheel speed sensor. Refer to

6.6.7.2

 

Wheel Speed Sensor Replacement (Front)

.

(b)

Check whether the sensor probe is scratched or
contaminated by foreign matter and dirt.

Yes

Clean or replace the sensor.

No

Step 7

Check the left front wheel speed sensor ring gear.

(a)

Check whether the left front wheel speed sensor ring gear is
deformed, or whether there are teeth missing.

Yes

Replace the left front wheel speed sensor ring
gear

No

Step 8

Replace the hydraulic electronic control unit.

(a)

Replace the hydraulic electronic control unit. Refer to

6.6.7.1

 

Hydraulic Electronic Control Unit Replacement

(b)

Confirm that the repair is completed.

6-92

ABS / TCS / EBD / ESP

Brake System