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

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Gasoline Model)  Air Vent Temperature does not Change and Right Vent is Different from Left and Vice Versa (Same Left/Right Temperature Setting)  


DESCRIPTION

If there is a difference in temperature between the left and right air outlets while dual mode is ON, the following causes are possible.

Malfunction Status Factor
There is a difference in temperature between the left and right air outlets (while cooling operation)
·

Compressor with motor assembly malfunction

·

Lack of refrigerant gas

·

Air mix damper and link operation (jamming)

·

Automatic light control sensor malfunction (for Automatic Air Conditioning System)


There is a difference in temperature between the left and right air outlets (while heater operation)
·

Air mix damper and link operation (jamming)

·

Heater core closed waterway



WIRING DIAGRAM

for Automatic Air Conditioning System:
E366622E48
0.229,1.021 1.802,1.396 1.573,0.375 10 false Air Conditioning Amplifier Assembly 1.844,3.865 3.208,4.021 1.365,0.156 10 false H1 1.854,4.021 4.073,4.219 2.219,0.198 10 false Automatic Light Control Sensor 4.635,4 6,4.156 1.365,0.156 10 false G169 4.646,4.156 6.833,4.583 2.188,0.427 10 false Main Body ECU (Multiplex Network Body ECU) 1.021,4.479 3.24,4.677 2.219,0.198 10 false : CAN Communication Line 4.635,1.646 5.094,1.823 0.458,0.177 10 false 8 4.885,1.646 5.344,1.823 0.458,0.177 10 false CLTB 4.583,2.427 5.042,2.604 0.458,0.177 10 false 20 4.906,2.427 5.365,2.604 0.458,0.177 10 false CLTS 4.583,3.094 5.042,3.271 0.458,0.177 10 false 21 4.906,3.083 5.365,3.26 0.458,0.177 10 false CLTE 3.104,1.646 3.563,1.823 0.458,0.177 10 false CLTB 3.625,1.656 4.083,1.833 0.458,0.177 10 false 1 3.125,2.438 3.583,2.615 0.458,0.177 10 false CLTS 3.615,2.427 4.073,2.604 0.458,0.177 10 false 4 3.615,3.104 4.073,3.281 0.458,0.177 10 false 2 3.125,3.115 3.583,3.292 0.458,0.177 10 false CLTE

CAUTION / NOTICE / HINT

NOTICE:

If DTC 124400 is output, troubleshoot for DTC 124400 first.

Click hereVehicle Exterior>LIGHTING (EXT)>LIGHTING SYSTEM>B124400


PROCEDURE

1.CHECK MALFUNCTION STATUS
Result:
Result Proceed to
While cooling A
While heater B



A

2.CHECK REFRIGERANT SHORTAGE

B

6.CHECK REFRIGERANT SHORTAGE
2.CHECK REFRIGERANT SHORTAGE
a.

Prepare the vehicle according to the table below.

Measurement Condition:
Item Condition
Vehicle Condition Engine running
A/C Switch On
Ambient Temperature*1 0 to 49°C (32 to 120°F)
Air Conditioning Air Inlet Temperature*2 25 to 35°C (77 to 95°F)
Set Temperature MAX COLD
Recirculation/fresh Control Switch Recirculation
Air Vent Damper Position FACE
Blower Speed HI

NOTICE:

When the GTS is operated without the check conditions satisfied, "Refrigerant incorrect" is displayed. Select "Yes" to return to the previous screen.


HINT:
·

Refer to the GTS operator's manual for further details.

·

A message indicating a refrigerant shortage is displayed on the GTS and the air conditioning system turns off if the amount of refrigerant in the system is insufficient.

·

DTCs are not stored when performing the refrigerant shortage check using the GTS.

·

*1: This inspection can be judged correctly only if the ambient temperature is within a range of 0 to 49°C (32 to 120°F). Therefore, postpone the test if the temperature is low.

·

*2: This inspection can be judged correctly only if the air inlet temperature is within a range of 25 to 35°C (77 to 95°F). Therefore, postpone the test if the temperature is out of range.




b.

According to the GTS display, perform refrigerant gas volume check.

Body Electrical > Air Conditioner > Utility
Tester Display
Refrigerant Gas Volume Check
50005 450 4578
Result:
Result Amount of Refrigerant
Refrigerant shortage Insufficient or leakage
Refrigerant correct Correct


OK:

"Refrigerant correct" is displayed on GTS.



Result:
Proceed to
OK
NG



OK

3.PERFORM ACTIVE TEST USING GTS (SERVO PULSE)

NG

CHARGE SYSTEM WITH REFRIGERANT

Click hereVehicle Interior>HEATING / AIR CONDITIONING>REFRIGERANT (for HFC-134a(R134a))>REPLACEMENT


3.PERFORM ACTIVE TEST USING GTS (SERVO PULSE)
a.

Perform the Active Test according to the display on the GTS.

Body Electrical > Air Conditioner > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Front Left Air Mix Damper Control Servo Motor No. 1 air conditioning radiator damper servo sub-assembly operation 128 to 384 Operates between 165 to 257 pulses
(for Automatic Air Conditioning System)
Front Right Air Mix Damper Control Servo Motor No. 1 air conditioning radiator damper servo sub-assembly operation 128 to 384 Operates between 255 to 347 pulses
(for Automatic Air Conditioning System)
Front Air Outlet Damper Control Servo Motor No. 1 air conditioning radiator damper servo sub-assembly operation 128 to 384 Operates between 165 to 257 pulses
(for Manual Air Conditioning System)
Body Electrical > Air Conditioner > Active Test
Tester Display
Front Left Air Mix Damper Control Servo Motor
50004 450 26
Body Electrical > Air Conditioner > Active Test
Tester Display
Front Right Air Mix Damper Control Servo Motor
50004 450 28
Body Electrical > Air Conditioner > Active Test
Tester Display
Front Air Mix Damper Control Servo Motor
50004 450 46
OK:

Damper servo motor is operated.



Result:
Result Proceed to
OK (for Automatic Air Conditioning System) A
OK (for Manual Air Conditioning System) B
NG C



A

4.CHECK HARNESS AND CONNECTOR (AUTOMATIC LIGHT CONTROL SENSOR - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

B

GO TO ON-VEHICLE INSPECTION

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>ON-VEHICLE INSPECTION


C

GO TO DTC OF APPLICABLE SERVO MOTOR OPERATING ABNORMALLY

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


4.CHECK HARNESS AND CONNECTOR (AUTOMATIC LIGHT CONTROL SENSOR - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
a.

Disconnect the H1 automatic light control sensor connector.


b.

Disconnect the G169 main body ECU (multiplex network body ECU) connector.


c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance:
Tester Connection Condition Specified Condition
H1-1 (CLTB) - G169-8 (CLTB) Always Below 1 Ω
H1-2 (CLTE) - G169-21 (CLTE) Always Below 1 Ω
H1-4 (CLTS) - G169-20 (CLTS) Always Below 1 Ω
H1-1 (CLTB) or G169-8 (CLTB) - Other terminals and body ground Always 10 kΩ or higher
H1-2 (CLTE) or G169-21 (CLTE) - Other terminals and body ground Always 10 kΩ or higher
H1-4 (CLTS) or G169-20 (CLTS) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

5.INSPECT AUTOMATIC LIGHT CONTROL SENSOR

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK REFRIGERANT SHORTAGE
a.

Prepare the vehicle according to the table below.

Measurement Condition:
Item Condition
Vehicle Condition Engine running
A/C Switch On
Ambient Temperature*1 0 to 49°C (32 to 120°F)
Air Conditioning Air Inlet Temperature*2 25 to 35°C (77 to 95°F)
Set Temperature MAX COLD
Recirculation/fresh Control Switch Recirculation
Air Vent Damper Position FACE
Blower Speed HI

NOTICE:

When the GTS is operated without the check conditions satisfied, "Refrigerant incorrect" is displayed. Select "Yes" to return to the previous screen.


HINT:
·

Refer to the GTS operator's manual for further details.

·

A message indicating a refrigerant shortage is displayed on the GTS and the air conditioning system turns off if the amount of refrigerant in the system is insufficient.

·

DTCs are not stored when performing the refrigerant shortage check using the GTS.

·

*1: This inspection can be judged correctly only if the ambient temperature is within a range of 0 to 49°C (32 to 120°F). Therefore, postpone the test if the temperature is low.

·

*2: This inspection can be judged correctly only if the air inlet temperature is within a range of 25 to 35°C (77 to 95°F). Therefore, postpone the test if the temperature is out of range.




b.

According to the GTS display, perform refrigerant gas volume check.

Body Electrical > Air Conditioner > Utility
Tester Display
Refrigerant Gas Volume Check
50005 450 4578
Result:
Result Amount of Refrigerant
Refrigerant shortage Insufficient or leakage
Refrigerant correct Correct


OK:

"Refrigerant correct" is displayed on GTS.



Result:
Proceed to
OK
NG



OK

7.BLEED AIR FROM COOLANT

NG

CHARGE SYSTEM WITH REFRIGERANT

Click hereVehicle Interior>HEATING / AIR CONDITIONING>REFRIGERANT (for HFC-134a(R134a))>REPLACEMENT


7.BLEED AIR FROM COOLANT

Click hereEngine / Hybrid System>M20C-FKS (COOLING)>COOLANT>REPLACEMENT

Result:
Proceed to
NEXT



NEXT

8.CHECK OPERATION (AIR CONDITIONING SYSTEM)
8.CHECK OPERATION (AIR CONDITIONING SYSTEM)
a.

Check that there is not a difference in temperature between the left and right air outlets.

OK:

There is not a difference in temperature between the left and right air outlets.



Result:
Proceed to
OK
NG



OK

END (FAILURE DUE TO AIR ENTERING COOLANT)

NG

9.PERFORM ACTIVE TEST USING GTS (SERVO PULSE)
9.PERFORM ACTIVE TEST USING GTS (SERVO PULSE)
a.

Perform the Active Test according to the display on the GTS.

Body Electrical > Air Conditioner > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Front Left Air Mix Damper Control Servo Motor No. 1 air conditioning radiator damper servo sub-assembly operation 128 to 384 Operates between 165 to 257 pulses
(for Automatic Air Conditioning System)
Front Right Air Mix Damper Control Servo Motor No. 1 air conditioning radiator damper servo sub-assembly operation 128 to 384 Operates between 255 to 347 pulses
(for Automatic Air Conditioning System)
Front Air Mix Damper Control Servo Motor No. 1 air conditioning radiator damper servo sub-assembly operation 128 to 384 Operates between 165 to 257 pulses
(for Manual Air Conditioning System)
Body Electrical > Air Conditioner > Active Test
Tester Display
Front Left Air Mix Damper Control Servo Motor
50004 450 26
Body Electrical > Air Conditioner > Active Test
Tester Display
Front Right Air Mix Damper Control Servo Motor
50004 450 28
Body Electrical > Air Conditioner > Active Test
Tester Display
Front Air Mix Damper Control Servo Motor
50004 450 46
OK:

Damper servo motor is operated.



Result:
Proceed to
OK
NG



OK

REPLACE HEATER RADIATOR UNIT SUB-ASSEMBLY

for M20C-FKS:Vehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING UNIT (for M20C-FKS)>DISASSEMBLY

for M20D-FKS:Vehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING UNIT (for M20D-FKS)>DISASSEMBLY



NG

GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION)

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