Suzuki Grand Vitara JB627. Manual - part 415

10B-9 Body Electrical Control System: 

Body Electrical Control System Check

S6JB0BA204002

Step

Action

Yes

No

1

)

 Customer complaint analysis

1) Perform customer complaint analysis.

Was customer complaint analysis performed?

Go to Step 2.

Perform customer 
complaint analysis.

2

)

 Problem symptom confirmation

1) Perform problem symptom confirmation.

Does trouble recur?

Go to Step 3.

Go to Step 7.

3

)

 DTC check

1) Check DTC.

Is it malfunction code?

Go to Step 4.

Go to Step 5.

4

)

 Troubleshooting for DTC

1) Check and repair according to DTC diag. flow.

Are check and repair completed?

Go to Step 7.

Check and repair 
malfunction part(s).

5

)

 Body electrical control system symptom diagnosis

1) Perform check and repair referring to “Symptom 

Diagnosis” of system having a trouble.

Is there faulty condition?

Repair or replace 
malfunction part(s).

Go to Step 6.

6

)

 Check for intermittent problem

1) Check for intermittent problem.

Is there faulty condition?

Repair or replace 
malfunction part(s).

Go to Step 7.

7

)

 Final confirmation test

1) Clear DTC referring to “DTC Clearance”.
2) Check DTC referring to “DTC Check”.

Is there any DTC?

Go to Step 4.

End.

Body Electrical Control System:  10B-10

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 figure will facilitate collecting information to the 
point required for proper analysis and diagnosis.

Customer questionnaire (example)

Problem Symptom Confirmation
Check if what the customer claimed in “Customer Questionnaire” is accurately found in the vehicle. If that symptom is 
found, check whether the symptom is identified as a failure. (This step should be shared with the customer if possible.)

DTC Check
Check DTC stored in BCM memory referring to “DTC Check”, record it and then clear it referring to “DTC Clearance”. 
DTC indicates malfunction that occurred in the system but does not indicate whether it exists now or it occurred in the 
past and the normal condition has been restored now. To check which case applies, clear DTC once and check 
whether or not any fault exists.

Troubleshooting for DTC
Based on the DTC indicated in Step 3 and referring to applicable DTC flow, locate the cause of the trouble, namely in 
a sensor, wire harness, connector, BCM or other part and repair or replace faulty parts.

Body Electrical Control System Symptom Diagnosis
Check the parts or system suspected as a possible cause referring to symptom diagnosis of each system.

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”.

Customer s name: 

 

Model: 

 

VIN: 

 

Date of issue: 

 

Date Reg: 

 

Date of problem: 

 

Mileage: 

 

Problem Symptoms

Power door lock system does not operate

Keyless entry system does not operate

 

Rear end door window defogger does not operate

Rear wiper does not operate

Rear end door opener does not operate

 

Other                       

Frequency of Occurrence 

Continuous / Intermittent (      times a day, a month) 

/

Other                     

Environmental Condition

 

Weather:  

Fine / Cloudy / Rain / Snow / Other           

Temperature:    

(

F ) 

Diagnostic Trouble Code 

Normal code / Malfunction code (                      ) 

Warning buzzer does not sound

Interior light does not light

Theft deterrent light does not flush

I5RS0DA20006-01

10B-11 Body Electrical Control System: 

Final Confirmation Test
Confirm that the problem symptom has gone and the body electrical control system is free from any abnormal 
conditions. If what has been repaired is related to the malfunction DTC, check DTC again and confirm that no DTC is 
indicated.

Scan Tool Data

S6JB0BA204003

Scan tool Data

Condition

Normal condition / 

reference value

Vehicle Speed

At stop with ignition switch turned ON

0 km/h

Outside air Temp

Reference value is relative to outside air temperature

–40 

°C – 70 °C

(–40 

°F – 158 °F)

Battery Voltage

At specified idle speed after warming up

10 – 14 V

Coolant Temp

At specified idle speed after warming up

80 

°C – 100 °C

(176 

°F – 212 °F)

Engine Speed

Engine idling with no load applied after warming up

Desired idle speed

± 50 rpm

Fuel Consumption

At specified idle speed after warming up

0.0 km/l

Key Reminder Sw

Ignition key inserted in ignition key cylinder

Key in

Ignition key pulled out from ignition key cylinder

Pulled

Door key Sw 

Key cylinder switch of driver side door at lock position

LOCK

Key cylinder switch of driver side door not turned

Neutral

Key cylinder switch of driver side door at unlock position

Unlock

Door Lock Sw

Lock side of manual door lock switch pressed

LOCK

Manual door lock switch not pressed

Neutral

Unlock side of manual door lock switch pressed

Unlock

Driv Door Sw 

Driver side door open

Open

Driver side door closed

Close

Pass Door Sw

Doors other than driver side door open

Open

Doors other than driver side door closed

Close

Brake Fluid Level

Brake fluid level at MIN level or higher

Normal

Brake fluid level lower than MIN level

Low

Parking Brake Sw

Parking brake lever pulled

ON

Parking brake lever released

OFF

Rear Defogger Sw

Rear end door window defogger switch turned ON with engine 
running

ON

Rear end door window defogger switch turned OFF with engine 
running

OFF

Tail Light Sw

Lighting switch at HEAD or CLEARANCE position

ON

Lighting switch at OFF position

OFF

Driv Seat belt Sw

Driver side seat belt fastened

Fasten

Driver side seat belt unfastened

Unfasten

Charge Light

Engine at stop with ignition switch turned ON

ON

Engine running

OFF

Oil pressure switch

Engine at stop with ignition switch turned ON

ON

Engine running

OFF

A/C Switch

A/C and ignition switch turned ON

ON

A/C switch turned OFF

OFF

Rear Wiper Sw

Rear wiper switch at ON position

ON

Rear wiper switch at INT position

INT

Rear wiper switch at OFF position

OFF

Front Fog Light Sw

Lighting switch at HEAD or CLEARANCE position and front fog 
light switch at ON position

ON

Lighting switch at HEAD or CLEARANCE position and front fog 
light switch at OFF position

OFF

Headlight Sw

Lighting switch at HEAD position

ON

Lighting switch at OFF position

OFF

Body Electrical Control System:  10B-12

Scan Tool Data Definitions
Vehicle Speed (km/h, mph):  This parameter indicates the vehicle speed computed by ECM.
Outside air Temp (

°C, °F):  It is detected by outside air temperature sensor.

Battery Voltage (V):  This parameter indicates battery positive voltage inputted to BCM.
Coolant Temp (Engine coolant temperature) (

°C, °F):  This parameter indicates the engine coolant temperature 

computed by ECM.

Engine Speed (RPM):  This parameter indicates the engine speed computed by ECM.
Fuel Consumption (km/l):  This parameter indicates the fuel consumption computed by ECM.
Key Reminder Sw (Key reminder switch) (Pulled / Key in):  This parameter indicates the state of the key reminder 

switch.

Door key Sw (Door key cylinder switch) (Lock / Neutral / Unlock):  This parameter indicates the state of the door 

key cylinder switch.

Door lock Sw (Manual door lock switch) (Lock / Neutral / Unlock):  This parameter indicates the state of the 

manual door lock switch.

Driv Door Sw (Driver side door switch) (Open / Close):  This parameter indicates the state of the driver side door 

switch.

Pass Door Sw (Other than driver side door switch) (Open / Close):  This parameter indicates the state of the door 

switches other than driver side door switch.

Brake Fluid Level (Low / Normal):  Low: Brake fluid level is lower than specified level.

Normal: Brake fluid level is higher than MIN level.

Parking Brake Sw (Parking brake switch) (ON / OFF):  ON: Parking brake lever is pulled up.

OFF: Parking lever is released

Rear Defogger Sw (Rear end door window defogger switch) (ON / OFF):  This parameter indicates the state of 

the rear end door window defogger switch.

Tail Light Sw (Lighting switch) (ON / OFF):  This parameter indicates the state of the lighting switch.
Driv Seat belt Sw (Driver seat belt switch) (Fasten / Unfasten):  This parameter indicates the state of the driver 

side seat belt buckle switch.

Charge light (ON / OFF):  This parameter indicates the state of the charge system monitor switch.
Oil pressure switch (ON / OFF):  This parameter indicates the state of the oil pressure switch.
A/C Switch (ON / OFF):  This parameter indicates the state of the air conditioning switch.
Rear Wiper Sw (Rear wiper switch) (ON / INT / OFF):  This parameter indicates the state of the rear wiper switch.
Front Fog Light Sw (Front fog light switch) (ON / OFF):  This parameter indicates the state of the front fog light 

switch.

Headlight Sw (Headlight switch) (ON / OFF):  This parameter indicates the state of the lighting switch.

Diagnosis Using Output Test Function of SUZUKI Scan Tool
SUZUKI scan tool has the output test function which can force operation of following actuators and relays of the 
system controlled by BCM. When a malfunction is found in the system controlled by BCM, execute the output test 
which enables easy judgment whether the malfunction is on the input side or output side of BCM. For detailed 
information on operation of SUZUKI scan tool, refer to “SUZUKI Scan Tool Operator’s Manual”.

Output Test Item

Controlled Parts

Hazard Warning Light

Turn signal and hazard warning relay

Interior (Dome) Light

Interior (Dome) light (when interior light switch is at DOOR position)

Parking/Tail Light

Tail light relay

Front Fog Light

Front fog light relay (when lighting switch is at CLEARANCE position)

Rear defogger

Rear defogger and mirror heater relays

D.R.L.

Headlight low beam relay

Auto on headlight

Headlight low beam and tail light relays

Door

Each door lock actuator

Warning buzzer

Warning buzzer (in BCM)

Rear wiper

Rear wiper relay

Alarm indicator

Theft deterrent light (in HVAC control module)