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)  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.READ VALUE USING GTS (COOLANT TEMPERATURE)
a.

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.



Result:
Proceed to
OK
NG



OK

2.PERFORM ACTIVE TEST USING GTS

NG

GO TO COOLING FAN SYSTEM

for M20C-FKS:Engine / Hybrid System>M20C-FKS (COOLING)>COOLING FAN SYSTEM>ON-VEHICLE INSPECTION

for M20D-FKS:Engine / Hybrid System>M20D-FKS (COOLING)>COOLING FAN SYSTEM>ON-VEHICLE INSPECTION



2.PERFORM ACTIVE TEST USING GTS
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:

Each damper servo motor operates.



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 DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR

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