Suzuki Grand Vitara JB416 / JB420. Manual — part 211

4E-21 ABS:

DTC C1021, C1022 / C1025, C1026 / C1031, C1032 / C1035, C1036: Right-Front / Left-Front / Right-
Rear / Left-Rear Wheel Speed Sensor Circuit or Encoder

S5JB0A4504013

Wiring Diagram

DTC Detecting Condition
The ABS control module monitors the voltage at the terminal of each sensor while the ignition switch is ON. When the
voltage is not within the specified range, an applicable DTC will be set. Also, when no sensor signal is inputted at
running, an applicable DTC will be set.

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 “ABS 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

1

2

12V

E03-7

GRN/ORN

BLK/YEL

7

[A]

E03

3

4

5

6

BLK

WHT

BLK

WHT

BLU/BLK

GRN/BLK

BLU

GRN

YEL/BLK

YEL

LT GRN
LT GRN/BLK

E03-21

E03-22

E03-19

E03-18

E03-15

E03-16

E03-25

E03-24

12V

12V

12V

12V

BLK

WHT

BLK

WHT

15
16
17
18
19
20
21
22
23
24
25

2
3
4
5
6
7
8
9

10
11
12

1

13

14

26

I5JB0A450013-03

[A]: ABS hydraulic unit / control module connector

(viewed from terminal side)

3. Right-rear wheel speed sensor

6. Left-front wheel speed sensor

1. Ignition switch

4. Left-rear wheel speed sensor

7. ABS hydraulic unit / control module assembly

2. Circuit fuse (in junction block assembly)

5. Right-front wheel speed sensor

Step

Action

Yes

No

1

Was “ABS Check” performed?

Go to Step 2.

Go to “ABS Check”.

2

1) Turn ignition switch OFF.
2) Disconnect ABS hydraulic unit / control module

connector.

3) Check for proper connection to ABS control module at

each sensor terminal.

4) If OK, then turn ignition switch ON and measure voltage

between applicable sensor terminal of module connector
and vehicle body ground.

Is it 0 V?

Go to Step 3.

ABS wheel speed
sensor circuit shorted to
power.

ABS: 4E-22

3

1) Disconnect applicable ABS wheel speed sensor coupler

with ignition switch OFF.

2) Measure resistance between the following points.

• Both ABS hydraulic unit / control module connector

(1) terminals a pair of applicable sensor terminals.
This check result should be no continuity.

• Between applicable sensor terminal of ABS hydraulic

unit / control module connector and vehicle body
ground. This check result should be no continuity.

• Between applicable sensor terminal of module

connector and corresponding terminal of ABS wheel
speed sensor connector (2) in main harness (for front
sensor) or floor harness (for rear sensor). This check
result should be continuity.

Are each check results OK?

Go to Step 4.

Circuit open or short to
ground.

4

1) Remove applicable ABS wheel speed sensor.
2) Check sensor for damage or foreign material attached.

Is it in good condition?

Go to Step 5.

Clean, repair or replace.

5

Check front and/or rear encoder for the following (remove
front and/or rear drive shaft):
• Encoder surface neither crack nor damaged
• No foreign material being attached
• Encoder not being eccentric
• Wheel bearing free from excessive play

Are they in good condition?

Go to Step 6.

Clean, repair or replace
wheel hub assembly.

6

1) Install ABS wheel speed sensor to knuckle.
2) Tighten sensor bolt to specified torque and check that

there is no clearance between sensor and knuckle.

Is it OK?

Go to Step 7.

Replace ABS wheel
speed sensor.

7

Refer to “Front Wheel Speed Sensor On-Vehicle Inspection”
and/or “Rear Wheel Speed Sensor On-Vehicle Inspection”,
check output voltage or waveform.

Is specified voltage and/or waveform obtained?

Substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.

Replace sensor and
recheck.

Step

Action

Yes

No

1

2

I5JB0A450014-02

4E-23 ABS:

DTC C1041 / C1045 / C1051 / C1055, C1042 / C1046 / C1052 / C1056: Right-Front / Left-Front / Right-
Rear / Left-Rear Inlet Solenoid Circuit, Right-Front / Left-Front / Right-Rear / Left-Rear Outlet
Solenoid Circuit

S5JB0A4504014

Wiring Diagram

DTC Detecting Condition
The ABS control module monitors the output from the valve.
When the output of each valve exceeds the specified value compared with the signal sent from ABS control module,
this DTC is set.

DTC Troubleshooting

WHT/RED

1

5

3

2

6

4

BLK

BLK

5V

12V

E03-14

E03-13

E03-26

7

[A]

E03

15
16
17
18
19
20
21
22
23
24
25

2
3
4
5
6
7
8
9

10
11
12

1

13

14

26

I5JB0A450015-02

[A]: ABS hydraulic unit / control module assembly connector

(viewed from terminal side)

3. ABS power control module

6. Solenoid valve power supply driver

(transistor)

1. Battery

4. Solenoid valve

7. Solenoid valve driver

2. Main fuse box

5. ABS hydraulic unit / control module

assembly

Step

Action

Yes

No

1

Was “ABS Check” performed?

Go to Step 2.

Go to “ABS Check”.

2

1) Turn ignition switch to OFF position.
2) Disconnect ABS hydraulic unit / control module

connector.

3) Check for proper connection to ABS hydraulic unit /

control module connector at terminal “E03-14”.

4) If OK, then measure voltage between terminal “E03-14”

of module connector and “E03-26”.

Is it 10 – 14 V?

Substitute a known-
good ABS hydraulic unit
/ control module
assembly and recheck.

“WHT/RED” or “BLK”
circuit open.

ABS: 4E-24

DTC C1057: Power Source Circuit

S5JB0A4504015

Wiring Diagram

DTC Detecting Condition
The ABS control module monitors the power source voltage at terminal “E03-14”. When the power source voltage
becomes extremely high or low while vehicle is running at more than 20 km/h (13 MPH), this DTC will be set. As soon
as the power source voltage becomes normal, the ABS warning lamp will be turned off and the ABS control module
will return to normal operation, but the set DTC will be remain.

DTC Troubleshooting

WHT/RED

1

2

3

12V

E03-14

BLK

BLK

E03-13

E03-26

[A]

E03

15
16
17
18
19
20
21
22
23
24
25

2
3
4
5
6
7
8
9

10
11
12

1

13

14

26

I5JB0A450016-02

[A]: ABS hydraulic unit / control module connector

(viewed from terminal side)

2. Main fuse box

1. Battery

3. ABS hydraulic unit / control module assembly

Step

Action

Yes

No

1

Was “ABS Check” performed?

Go to Step 2.

Go to “ABS Check”.

2

1) Disconnect ABS hydraulic unit / control module

connector with ignition switch turned OFF.

2) Check for proper connection to ABS hydraulic unit /

control module connector at terminals “E03-14” and
“E03-13”.

3) If OK, then turn ignition switch to ON position and

measure voltage between terminals “E03-14” and “E03-
13”.

Is voltage 9.7

±

0.3 V or more?

Go to Step 5.

Go to Step 3.

3

1) Turn ignition switch to OFF.
2) Check for proper connection to ABS hydraulic unit /

control module connector at terminals “E03-13” and
“E03-26”.

3) If OK then turn ignition switch to ON and measure

resistance between each terminal of “E03-13” and “E03-
26” and vehicle body ground.

Is resistance less than 2

Ω

?

Go to Step 4.

“BLK” wire circuit in
open or high resistance.

4

1) Measure voltage between positive battery terminal and

vehicle body ground with engine running.

Is voltage 9.7

±

0.3 V or more?

Imperfect short between
“WHT/RED” wire circuit
and body ground.

Check charging system
referring to “Generator
Test (Undercharged
Battery Check) in
Section 1J”.