RM36D0EC _58 Vehicle Interior _083104 HEATING / AIR CONDITIONING _0402828 AIR CONDITIONING SYSTEM(for Gasoline Model) Y

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Gasoline Model)  HOW TO PROCEED WITH TROUBLESHOOTING  


CAUTION / NOTICE / HINT

HINT:
·

Use the following procedure to troubleshoot the air conditioning system.

·

*: Use the GTS.



PROCEDURE

1.VEHICLE BROUGHT TO WORKSHOP
Result:
Proceed to
NEXT



NEXT

2.CUSTOMER PROBLEM ANALYSIS
2.CUSTOMER PROBLEM ANALYSIS
HINT:
·

In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

·

Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

·

The following 5 items are important points for problem analysis:

What Vehicle model, system name
When Date, time, occurrence frequency
Where Road conditions
Under what conditions? Driving conditions, weather conditions
How did it happen? Problem symptoms



Result:
Proceed to
NEXT



NEXT

3.INSPECT BATTERY VOLTAGE
3.INSPECT BATTERY VOLTAGE
a.

Measure the battery voltage.

Standard Voltage:

11 to 14 V


If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.


b.

Check the fuses and relays.


c.

Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.


Result:
Proceed to
NEXT



NEXT

4.CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
5.CHECK FOR DTC*
a.

Check for DTCs and note any codes that are output.

Body Electrical > Air Conditioner > Trouble Codes
50001 450

b.

Clear the DTCs.

Body Electrical > Air Conditioner > Clear DTCs
50002 450

c.

Recheck for DTCs. Based on the DTCs output above, try to force output of the air conditioning system DTC by simulating the operation indicated by the DTC.

Body Electrical > Air Conditioner > Trouble Codes
50001 450

Result:
Result Proceed to
DTCs are not output A
DTCs are output B



A

6.CHECK FOR VEHICLE CONTROL HISTORY (RoB)*

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>DIAGNOSTIC TROUBLE CODE CHART


6.CHECK FOR VEHICLE CONTROL HISTORY (RoB)*
HINT:

Refer to Vehicle Control History (RoB).

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>VEHICLE CONTROL HISTORY (RoB)


a.

Check for vehicle control history (RoB) and note any codes that are output.

Body Electrical > Air Conditioner > Utility
Tester Display
Vehicle Control History (RoB)
50005 450 55

Result:
Result Proceed to
No vehicle control history (RoB) is output A
Vehicle control history (RoB) is output B



A

7.CHECK AIR CONDITIONING CONTROL ASSEMBLY

B

GO TO VEHICLE CONTROL HISTORY (RoB)

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>VEHICLE CONTROL HISTORY (RoB)


7.CHECK AIR CONDITIONING CONTROL ASSEMBLY
a.

Operate each switch on the air conditioning control assembly and check that the switches of the air conditioning system operate normally.


Result:
Proceed to
OK
NG



OK

8.CHECK BLOWER CONTROL

NG

GO TO PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>PROBLEM SYMPTOMS TABLE


8.CHECK BLOWER CONTROL
a.

Operate the blower switch on the air conditioning control assembly and check that the blower control operates normally.


Result:
Proceed to
OK
NG



OK

9.CHECK AIR INLET CONTROL

NG

GO TO PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>PROBLEM SYMPTOMS TABLE


9.CHECK AIR INLET CONTROL
a.

Operate the recirculation/fresh switch on the air conditioning control assembly and check that the air inlet control operates normally.


Result:
Proceed to
OK
NG



OK

10.CHECK AIR OUTLET CONTROL

NG

GO TO PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>PROBLEM SYMPTOMS TABLE


10.CHECK AIR OUTLET CONTROL
a.

Operate the air outlet mode switch on the air conditioning control assembly and check that the air outlet control operates normally.


Result:
Proceed to
OK
NG



OK

11.CHECK COOLING FUNCTION

NG

GO TO PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>PROBLEM SYMPTOMS TABLE


11.CHECK COOLING FUNCTION
a.

Operate the temperature adjustment switches on the air conditioning control assembly and check that cool air is blown from the registers.


Result:
Proceed to
OK
NG



OK

12.CHECK HEATER FUNCTION

NG

GO TO PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>PROBLEM SYMPTOMS TABLE


12.CHECK HEATER FUNCTION
a.

Operate the temperature adjustment switches on the air conditioning control assembly and check that warm air is blown from the air registers.


Result:
Proceed to
OK
NG



OK

13.USE SIMULATION METHOD TO CHECK

NG

GO TO PROBLEM SYMPTOMS TABLE

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>PROBLEM SYMPTOMS TABLE


14.CONFIRMATION TEST
Result:
Proceed to
NEXT



NEXT

END