DESCRIPTION
If cool air blows from the registers regardless of the temperature setting of the air conditioning system, the following factors may be the cause.
Symptom | Factor |
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PROCEDURE
1. |
READ VALUE USING GTS (COOLANT TEMPERATURE) |
(a) Read the Data List according to the display on the GTS.
Powertrain > Engine > 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:
|
Tester Display |
---|
Coolant Temperature |
OK:
The value of the display does not change frequently.
NG | GO TO COOLING SYSTEM |
|
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 pulse |
128: Min 384: Max |
Operates between 165 to 257 pulses |
Front Right Air Mix Damper Control Servo Motor |
No. 1 air conditioning radiator damper servo sub-assembly pulse |
128: Min 384: Max |
Operates between 255 to 347 pulses |
Active Test Display |
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Front Left Air Mix Damper Control Servo Motor |
Data List Display |
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Front Left Air Mix Damper Control Servo Motor Actual Pulse |
Active Test Display |
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Front Right Air Mix Damper Control Servo Motor |
Data List Display |
---|
Front Right Air Mix Damper Control Servo Motor Actual Pulse |
OK:
Damper servo motor is operated.
OK | REPLACE HEATER RADIATOR UNIT SUB-ASSEMBLY |
NG | GO TO DTC TROUBLESHOOTING PROCEDURE FOR MALFUNCTIONING DAMPER SERVO MOTOR |