Suzuki Grand Vitara JB627. Manual - part 268

7A-4 Heater and Ventilation:

Component Location

Electronic Components Location for Heater (for Vehicle without A/C)

S6JB0B7103001

NOTE
The figure shows left-hand steering vehicle. For right hand steering vehicle, parts with (*) are installed
at the opposite side.

I6JB0B710001-01

1. Air intake control actuator

8. “DEF / FOOT” switch

15. “REC” indicator light

2. Temperature control actuator

9. “FOOT” switch

16. “FRE” indicator light

3. Air flow control actuator

10. “BI-LEVEL” switch

17. MODE selector

4. Blower motor

11. “VENT” switch

18. HVAC control module (for vehicle without A/C)

5. Blower motor controller

12. Theft deterrent light

19. “DEF” indicator light

6. Temperature selector

13. Blower speed selector / Air intake selector

7. “DEF” switch

14. Rear defogger switch

Heater and Ventilation: 7A-5

Diagnostic Information and Procedures

Heater and Ventilation System Check

S6JB0B7104001

Step

Action

Yes

)

Customer complaint analysis

1) Perform “Customer complaint analysis”.

Was customer complaint analysis performed?

Go to Step 2.

Perform customer
complaint analysis.

)

DTC check

1) Perform “DTC check”.

Is there any DTC code?

Go to Step 3.

Go to Step 4.

)

Troubleshooting malfunction

1) Perform “Troubleshooting malfunction”.

Is there any faulty condition?

Repair or replace
malfunction part, and go
to Step 7.

Go to Step 5.

)

Visual inspection

1) Perform “Visual inspection”.

Is there any faulty condition?

Repair or replace
malfunction part.

Go to Step 5.

)

Perform heater and ventilation system symptom

diagnosis
1) Inspect and repair referring to “Heater and Ventilation

Symptom Diagnosis”.

Is there any faulty condition?

Repair or replace
malfunction part, and go
to Step 7.

Go to Step 6.

)

Check for intermittent problem

1) Check for intermittent troubles referring to “Intermittent

and Poor Connection Inspection in Section 00”.

Is there any faulty condition?

Repair or replace
malfunction part, and go
to Step 7.

Go to Step 7.

)

Final confirmation test

1) Perform “Final confirmation test”.

Is there any malfunction code?

Go to Step 4.

Heater and ventilation
system is in good
condition.

7A-6 Heater and Ventilation:

Description for Each Step
Step 1. Customer complaint analysis
Talk to customer, and then record details of the problem.

Customer questionnaire (example)

NOTE
The form is a standard sample. It should be modified according to conditions characteristic of each
market.

Step 2. Visual inspection
As a preliminary step, be sure to perform visual check of the items that support proper function of the heater and
ventilation referring to “Visual Inspection”.

Step 3. DTC check
Check DTC referring to “DTC Check”.

Step 4. Troubleshooting malfunction
Based on the DTC, perform an applicable DTC diagnostic flow and locate the cause of the trouble, namely in a sensor,
wire harness, connector, actuator, HVAC control module or other part and repair faulty parts.

Step 5. Heater and ventilation system symptom diagnosis
Check any part or system suspected to be a possible cause referring to “Heater and Ventilation Symptom Diagnosis”.

Step 6. Check for intermittent problem
Check any part 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 cord recorded.

Step 7. Final confirmation test
Confirm if the problem symptom is troubleshooting and the heater and ventilation system is free from any abnormal
conditions. If there existed DTC, clear the DTC. Then, check if the DTC is still detected and if there is any other DTC.

Customer’s Name:

Model:

VIN:

Date of Issue:

Date of Reg.

Date of Problem:

Mileage:

Problem Symptoms

• REC indicator light and/or FRE indicator light abnormal: fails to turn on / fails to turn

off / flashes

• Abnormal noise while is working: from blower motor / from HVAC unit / from engine

room, other_______________

• Air intake selector dose not work:
• Blower speed selector dose not work:
• Temperature selector dose not work:
• Other:

Frequency of Occurrence

• Continuous / Intermittent (_____ times a day, a month) / other_______________

Conditions for Occurrence of
Problem

• Vehicle at stop & blower motor is working:
• For some time after blower speed selector is ON:
• When outside air temperature is high:
• When outside air temperature is low:
• All the time:

Environmental Condition

• Weather: fair / cloudy / rain / snow / other_______________
• Temperature: _____

°F (_____ °C)

Diagnostic Trouble Code

• First check: Normal code / malfunction code (__________)
• Second check: Normal code / malfunction code (__________)

Heater and Ventilation: 7A-7

Visual Inspection

S6JB0B7104002

Check visually the following parts and systems.

DTC Check

S6JB0B7104003

DTC check is the same as vehicle equipped with A/C system.
Refer to “DTC Check in Section 7B”.

DTC Clearance

S6JB0B7104004

DTC clearance is the same as vehicle equipped with A/C system.
Refer to “DTC Clearance in Section 7B”.

DTC Table

S6JB0B7104005

DTC table is the same as vehicle equipped with A/C system.
Refer to “DTC Table in Section 7B”.

Fail-Safe Table

S6JB0B7104006

Fail-safe table is the same as vehicle equipped with A/C system.
Refer to “Fail-Safe Table in Section 7B”.

Scan Tool Data

S6JB0B7104007

Scan tool data is the same as vehicle equipped with A/C system.
Refer to “Scan Tool Data in Section 7B”.

Inspection item

Correction

• Engine coolant
• Heater pipe and/or hose
• Battery
• Connectors of electric wire harness
• Fuses
• Parts
• Other parts that can be checked visually

• Leakage
• Disconnection, looseness and deterioration
• Fluid level and corrosion of terminal
• Disconnection and friction
• Burning
• Installation and damage

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