Suzuki Grand Vitara JB419. Service manual — part 85

ABS: 4E-8

Diagnostic Information and Procedures

ABS Check

S5JB0B4504001

Refer to the following items for the details of each step.

Step 1: Malfunction Analysis
Customer complaint analysis
Record details of the problem (failure, complaint) and how it occurred as described by the customer.
For this purpose, use of such a questionnaire form as shown in the following will facilitate collecting information to the
point required for proper analysis and diagnosis.

Step

Action

Yes

No

1

)

Malfunction analysis

1) Perform “Customer complaint analysis: ”.
2) Perform “Problem symptom confirmation: ”.
3) Perform “DTC check, record and clearance: ” and

recheck DTC.

Is there any malfunction DTC?

Go to Step 4.

Go to Step 2.

2

)

Driving test

1) Perform “Step 2: Driving Test: ”.

Is trouble symptom identified?

Go to Step 3.

Go to Step 6.

3

)

DTC check

1) Perform “DTC Check”.

Is it malfunction code?

Go to Step 4.

Go to Step 5.

4

)

ABS check

1) Inspect and repair referring to applicable DTC flow.

Does trouble recur?

Go to Step 5.

Go to Step 7.

5

)

Brakes diagnosis

1) Inspect and repair referring to “Brakes Symptom

Diagnosis in Section 4A in related manual”.

Does trouble recur?

Go to Step 3.

Go to Step 7.

6

)

Check for intermittent problem

1) Check intermittent troubles referring to “Intermittent and

Poor Connection Inspection in Section 00 in related
manual” and related circuit of trouble code recorded in
Step 1.

Does trouble recur?

Go to Step 4.

Go to Step 7.

7

)

Final confirmation test

1) Perform “Step 7: Final Confirmation Test: ”.

Does trouble recur?

Go to Step 3.

End.

4E-9 ABS:

Customer questionnaire (Example)

Problem symptom confirmation
Check if what the customer claimed in “Customer Questionnaire” is actually found in the vehicle and if that symptom is
found, whether it is identified as a failure. (This step should be shared with the customer if possible.) Check warning
lamps related to brake system referring to “EBD Warning Lamp (Brake Warning Lamp) Check in related manual” and
“ABS Warning Lamp Check”.

DTC check, record and clearance
Perform “DTC Check” procedure, record it and then clear it referring to “DTC Clearance in related manual”.
Recheck DTC referring to “DTC Check”.
When DTC which is recorded at DTC check procedure is detected again after performing DTC clearance, go to “Step
4: ABS Check: ” to proceed the diagnosis.
When DTC which is recorded at DTC check procedure is not indicated anymore after performing DTC clearance, ABS
(ESP

®) control module does not perform the system diagnosis, or temporary abnormality may occur, therefore go to

“Step 2: Driving Test: ” to proceed the diagnosis.

Step 2: Driving Test
Test drive the vehicle at 40 km/h for more than a minute and check if any trouble symptom (such as abnormal lighting
of ABS warning light) exists.
If the malfunction DTC is confirmed again at ignition switch ON, driving test as described is not necessary. Proceed to
Step 3.

I2RH01450014-01

ABS: 4E-10

Step 3: DTC Check
Recheck DTC referring to “DTC Check”.

Step 4: ABS Check
According to ABS Check for the DTC confirmation in Step 3, locate the cause of the trouble, namely in a sensor,
switch, wire harness, connector, actuator assembly or other part and repair or replace faulty parts.

Step 5: Brakes Diagnosis
Check the parts or system suspected as a possible cause referring to “Brakes Symptom Diagnosis in Section 4A in
related manual” and based on symptoms appearing on the vehicle (symptom obtained through Steps 1 and 2 and
repair or replace faulty parts, if any).

Step 6: Check for Intermittent Problem
Check parts where an intermittent trouble is easy to occur (e.g., wire harness, connector, etc.), referring to
“Intermittent and Poor Connection Inspection in Section 00 in related manual” and related circuit of trouble code
recorded in Step 1 to 3.

Step 7: Final Confirmation Test
Confirm that the problem symptom has gone and the ABS is free from any abnormal conditions. If what has been
repaired is related to the malfunction DTC, clear the DTC once referring to “DTC Clearance in related manual” and
perform test driving and confirm that no DTC is indicated.

ABS Warning Lamp Check

S5JB0B4504002

1) Turn ignition switch ON.
2) Check that ABS warning lamp (1) comes ON for

about 2 seconds and then goes off.
If any faulty condition is found, advance to “ABS
Warning Lamp Does Not Come ON at Ignition Switch
ON” and “ABS Warning Lamp Comes ON Steady”.

DTC Check

S5JB0B4504004

1) Turn ignition switch to OFF position.
2) Connect SUZUKI scan tool to data link connector

(1).

Special tool
(A): SUZUKI scan tool

3) Turn ignition switch to ON position.
4) Read DTC according to instructions displayed on

SUZUKI scan tool and print it or write it down. Refer
to SUZUKI scan tool operator’s manual for further
details.

NOTE
If SUZUKI scan tool can not communicate
ABS (ESP

®) hydraulic unit / control module,

perform “Serial Data Link Circuit Check in
related manual”.

5) After completing the check, turn ignition switch off

and disconnect SUZUKI scan tool from DLC.

1

I5JB0A450001-01

(A)

1

I5JB0A450008-01

4E-11 ABS:

DTC Table

S5JB0B4504005

CAUTION

!

Be sure to perform “ABS Check” before
starting diagnosis.

Scan Tool Data

S5JB0B4504007

The parameter data below are values measured with the
scan tool when the normally operating vehicle is under
the following conditions. When taking measurements for
comparison by using the scan tool, be sure to check that
the vehicle is under the following conditions.

• Apply parking brake and block wheels.
• Ignition switch ON.
• Turn OFF air conditioner (if equipped).
• Apply no load to power steering (if equipped). (Don’t

turn it)

• Turn OFF all electric loads (except ignition).
• No DTC.
• ABS is not operated. (Normal braking operation)

Scan Tool Data Definition
Battery Volt (V): Battery Voltage is an analog input

signal read by the ABS (ESP

®) control module.

Certain ABS (ESP

®) control module functions will be

modified if the battery voltage falls below or rises
above programmed thresholds.

Pump Motor Driver (V): This parameter indicates the

operational condition of the pump motor driver
(transistor).

RF Wheel Speed, LF Wheel Speed, RR Wheel Speed

and LF Wheel Speed (km/h, MPH): Wheel speed
is an ABS (ESP

®) control module internal

parameter. It is computed by reference pulses from
the wheel speed sensor.

Brake Switch (ON, OFF): This switch signal informs

the ABS (ESP

®) control module whether the brake

is active or not.

G Sensor (G): The G-Sensor converts gravity during

the vehicle acceleration / deceleration in to a voltage
conditions and controls the ABS for 4WD vehicle
without ESP

®.

Vehicle acceleration is measured by yaw rate / G
sensor assembly and output to ESP

® control

module by pulse signal for 4WD vehicle with ESP

®.

DTC (displayed on

SUZUKI scan tool)

Diagnostic Items

NO DTC

Normal

)

C1015

G sensor circuit failure (for 4WD
vehicle)

)

C1021

RF

Wheel speed sensor circuit
failure

)

C1025

LF

)

C1031

RR

)

C1035

LR

)

C1022

RF

Wheel speed sensor or
encoder failure

)

C1026

LF

)

C1032

RR

)

C1036

LR

)

C1041

RF

Inlet solenoid valve circuit
failure

)

C1042

Outlet solenoid valve circuit
failure

)

C1045

LF

Inlet solenoid valve circuit
failure

)

C1046

Outlet solenoid valve circuit
failure

)

C1051

RR

Inlet solenoid valve circuit
failure

)

C1052

Outlet solenoid valve circuit
failure

)

C1055

LR

Inlet solenoid valve circuit
failure

)

C1056

Outlet solenoid valve circuit
failure

)

C1057

ABS (ESP

®) control module power

supply circuit failure

)

C1061

Pump motor and/or motor driver
circuit failure

)

C1063

Solenoid valve power supply driver
circuit failure

)

C1071

ABS (ESP

®) control module

internal defect

)

U1073

Control Module Communication
Bus Off

)

U1100

Lost Communication with ECM
(Reception error)

Scan Tool

Data

Standards

Condition

Battery
Voltage

10.0 – 16.0 V

—

Pump Motor
Driver

0.0 V

—

RF Wheel
Speed

0 km/h, 0.0 MPH Vehicle stop

LF Wheel
Speed

0 km/h, 0.0 MPH Vehicle stop

RR Wheel
Speed

0 km/h, 0.0 MPH Vehicle stop

LR Wheel
Speed

0 km/h, 0.0 MPH Vehicle stop

Brake Switch

ON

Brake pedal
depressed

OFF

Brake pedal released

G sensor

0

± 0.09G

Place vehicle on the
level