Suzuki Grand Vitara JB627. Manual - part 193

4F-11 Electronic Stability Program: 

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.

Customer questionnaire (Example)

Problem symptom confirmation
If symptom in “Customer Questionnaire” is found or reproduced in the vehicle, confirm the symptom is problem or not. 
(This step should be done with the customer if possible.) Check warning lights related to brake system referring to 
“EBD Warning Light (Brake Warning Light) Comes ON Steady in Section 4E”, “ABS Warning Light Check in Section 
4E” and “ESP

® Warning Light Check”.

I6JB01460011-02

Electronic Stability Program:  4F-12

DTC check, record and clearance
Perform “DTC Check” procedure, record it and then clear it referring to “DTC Clearance”.
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: ESP

® Check: ” to proceed the diagnosis.

When DTC which is recorded at DTC check procedure is not indicated anymore after performing DTC clearance, 
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 the vehicle at 40 km/h for more than a minute including left and right turns and check if any trouble symptom 
(such as ESP

® warning light and/or ABS warning light) exists.

If the malfunction DTC is confirmed at ignition switch ON, proceed to Step 3.
If the malfunction DTC is not confirmed at ignition switch ON, proceed to Step 6.

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

Step 4: ESP

® Check

According to ESP

® 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” 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” 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 ESP

® 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” and perform test driving 
and confirm that no DTC is indicated.

ESP

® Warning Light Check

S6JB0B4604022

1) Turn ignition switch ON.
2) Check that ESP

® warning light (1) comes ON for 

about 2 seconds and then goes off.
If any faulty condition is found, advance to “ESP

® 

Warning Light Does Not Come ON at Ignition Switch 
ON” or “ESP

® Warning Light Comes ON Steady”.

ABS Warning Light Check

S6JB0B4604002

Refer to “ABS Warning Light Check in Section 4E”.

EBD Warning Light (Brake Warning Light) 
Check 

S6JB0B4604003

Refer to “EBD Warning Light (Brake Warning Light) 
Check in Section 4E”.

1

I6JB01460012-01

4F-13 Electronic Stability Program: 

DTC Check

S6JB0B4604004

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 
ESP

® control module, perform “Serial Data 

Link Circuit Check”.

 

5) After completing the check, turn ignition switch off 

and disconnect SUZUKI scan tool from DLC.

DTC Table

S6JB0B4604005

CAUTION

!

 

Be sure to perform “Electronic Stability Program Check” before starting diagnosis.

 

(A)

1

I5JB0A450008-01

DTC 

(displayed 

on SUZUKI 

scan tool)

Diagnostic Items

Detecting condition (DTC will be 

set when detecting)

ABS 

warning 

light

EBD 

warning 

light

ESP

® 

warning 

light

NO DTC

Normal

—

—

—

—

)

 C1015

Longitudinal G sensor in 
yaw rate / G sensor 
assembly failure

Longitudinal G sensor signal is out of 
specified range. (4WD model)

{

—

{

)

 C1016

Brake light switch failure

Vehicle behavior and brake light 
switch signal is disagreed for 
specified time.

—

—

—

)

 C1017

Lateral G sensor in yaw rate 
/ G sensor assembly failure

Lateral G sensor signal is out of 
specified range.

—

—

{

)

 C1018

Brake fluid level switch 
failure

• Brake fluid level is too low.
• Input voltage of brake fluid level 

switch to BCM is low.

—

—

{

)

 C1020

Master cylinder pressure 
sensor power supply failure

Power supply voltage to master 
cylinder pressure sensor in ESP

® 

hydraulic unit / control module 
assembly is too low.

—

—

{

)

 C1021

RF

Wheel speed 
sensor circuit failure

Wheel sensor signal is out of 
specified range.

{

*1

{

)

 C1025

LF

)

 C1031

RR

)

 C1035

LR

)

 C1022

RF

Wheel speed 
sensor or encoder 
failure

Abnormal wheel speed sensor signal 
is detected.

{

*1

{

)

 C1026

LF

)

 C1032

RR

)

 C1036

LR

Electronic Stability Program:  4F-14

)

 C1023

Yaw rate sensor in yaw rate 
/ G sensor assembly failure

• Yaw rate sensor signal is out of 

range.

• Vehicle behavior and yaw rate 

signal is disagreed.

—

—

{

)

 C1024

Steering angle sensor 
circuit failure

• Steering angle sensor internal 

defect is detected by CPU in 
steering angle sensor.

• Steering angle sensor signal is out 

of specified range.

—

—

{

)

 C1027

ESP

® OFF switch circuit 

failure

Mechanical switch failure, failure in 
switch wiring is shorted to ground.

—

—

—

)

 C1028

Master cylinder pressure 
sensor circuit failure

Input signal voltage from master 
cylinder pressure sensor in ESP

® 

control module is too high or low.

—

—

{

)

 C1034

Yaw rate / G sensor 
assembly power supply 
failure

Power supply voltage of yaw rate / G 
sensor assembly is too high when 
ignition switch OFF.

—

—

{

Power supply voltage of yaw rate / G 
sensor assembly is too low when 
ignition switch ON.

)

 C1037

Steering angle sensor 
power supply failure

Power supply voltage to steering 
angle sensor is too low.

—

—

{

)

 C1038

Steering angle sensor 
detect rolling counter failure 
from ESP

® control module

ESP

® control module rolling counter 

failure is detected by steering angle 
sensor.

—

—

{

)

 C1039

Yaw rate / G sensor 
assembly internal failure

Yaw rate / G sensor assembly 
internal failure is detected.

—

—

{

)

 C1040

Stability control system 
function failure

Stability control is active for more 
than specified time without yaw rate 
change.

—

—

{

)

 C1041

RF

Inlet solenoid valve 
circuit failure

Mismatching solenoid output and 
solenoid monitor is detected.

{

{

{

)

 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

)

 C1043

Master cylinder cut solenoid 
valve circuit No.1 failure

)

 C1044

Master cylinder cut solenoid 
valve circuit No.2 failure

)

 C1053

Low pressure solenoid 
valve circuit No.1 failure

)

 C1054

Low pressure solenoid 
valve circuit No.2 failure

DTC 

(displayed 

on SUZUKI 

scan tool)

Diagnostic Items

Detecting condition (DTC will be 

set when detecting)

ABS 

warning 

light

EBD 

warning 

light

ESP

® 

warning 

light