RM35X0E _58 Vehicle Interior _079316 HEATING / AIR CONDITIONING _0386651 AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) J

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System)  No Heating at All  


DESCRIPTION

If warm air is not discharged (airflow volume control is normal), the following malfunctions are possible.

Malfunction Status Factor
·

No heating at all. (Airflow volume control is normal.)

·

Air outlet temperature does not increase. (Airflow volume control is normal.)


·

Low engine coolant temperature

·

Air mix damper and link operation (jamming)

·

Warm-up control

·

Heater core closed waterway



PROCEDURE

1.CHECK MALFUNCTION STATUS
Result:
Result Proceed to
for Front A
for Rear (w/ Integration Control Panel (for Rear Automatic Air Conditioning)) B



A

2.READ VALUE USING GTS (COOLANT TEMPERATURE)

B

4.PERFORM ACTIVE TEST USING GTS (SERVO PULSE)
2.READ VALUE USING GTS (COOLANT TEMPERATURE)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List.


e.

except 1GD-FTV (w/ Exhaust Gas Temperature Sensor for EGR):

i.

Read the Data List according to the display on the GTS.

Powertrain > Engine
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Coolant Temperature Engine coolant temperature Min.: -40°C (-40°F), Max.: 140°C (284°F) 75 to 100°C (167 to 212°F): After warming up This is the engine coolant temperature.
HINT:
·

After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F).

·

After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal.

·

If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted.

·

Check if the engine overheats if the value indicated is higher than 135°C (275°F).



Powertrain > Engine > Data List
Tester Display
Coolant Temperature
50003 372 205
OK:

The value of the display does not change frequently.




f.

for 1GD-FTV (w/ Exhaust Gas Temperature Sensor for EGR):

i.

Read the Data List according to the display on the GTS.

Powertrain > Engine and Transmission > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Coolant Temperature Engine coolant temperature Min.: -40°C (-40°F), Max.: 140°C (284°F) 75 to 100°C (167 to 212°F): After warming up This is the engine coolant temperature.
HINT:
·

After warming up the engine, the engine coolant temperature will be 75 to 100°C (167 to 212°F).

·

After a long soak, the engine coolant temperature, intake air temperature and ambient air temperature will be approximately equal.

·

If the value is -40°C (-40°F), or higher than 135°C (275°F), the sensor circuit is open or shorted.

·

Check if the engine overheats if the value indicated is higher than 135°C (275°F).



Powertrain > Engine and Transmission > Data List
Tester Display
Coolant Temperature
50003 456 237
OK:

The value of the display does not change frequently.




Result:
Proceed to
OK
NG



OK

3.PERFORM ACTIVE TEST USING GTS (SERVO PULSE)

NG

GO TO COOLING SYSTEM

for 7GR-FKS:Engine / Hybrid System>7GR-FKS (COOLING)>COOLING SYSTEM>ON-VEHICLE INSPECTION

for 1GD-FTV:Engine / Hybrid System>1GD-FTV (COOLING)>COOLING SYSTEM>ON-VEHICLE INSPECTION



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

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Air Conditioner / Active Test.


e.

for Automatic Air Conditioning System:

i.

Check the operation by referring to the table below.



f.

Check the operation by referring to the table below.

Body Electrical > Air Conditioner > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Air Mix Servo Targ Pulse(D) No. 1 air conditioning radiator damper servo sub-assembly (air mix) pulse Min.: 128
Max.: 383 		Operates between 165 to 257 pulses
Body Electrical > Air Conditioner > Active Test
Tester Display
Air Mix Servo Targ Pulse(D)
50004 121 24
OK:

Damper servo motor is operated.



Result:
Proceed to
OK
NG



OK

REPAIR OR REPLACE HEATER RADIATOR UNIT SUB-ASSEMBLY

NG

GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION (DTC B1441))

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System)>B1441


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

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Air Conditioner / Active Test.


e.

for Automatic Air Conditioning System:

i.

Check the operation by referring to the table below.



f.

Check the operation by referring to the table below.

Body Electrical > Air Conditioner > Active Test
Tester Display Measurement Item Control Range Diagnostic Note
Rear Air Mix Servo Targ Pulse No. 1 rear cooling unit damper servo motor sub-assembly (rear air mix) target pulse Min.: 128
Max.: 383 		Operates between 254 and 299 pulses
(w/ Integration Control Panel (for Rear Automatic Air Conditioning))
Body Electrical > Air Conditioner > Active Test
Tester Display
Rear Air Mix Servo Targ Pulse
50004 121 36
OK:

Damper servo motor is operated.



Result:
Proceed to
OK
NG



OK

REPAIR OR REPLACE REAR HEATER UNIT SUB-ASSEMBLY

NG

GO TO DIAGNOSTIC TROUBLE CODE CHART (FOR SERVO MOTOR OF APPLICABLE ABNORMAL OPERATION (DTC B1441))

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Automatic Air Conditioning System)>B1447