Component Location
General Description

Intake door located at heater unit controls the inlet of car. It contains intake motor that changes intake door position and potentiometer that monitors position of intake door. When driver operates the intake switch, ECU receives mode signal from intake switch and operates intake door motot to turn intake door to intended position. (with FRE mode signal, intake door is closed and with REC mode signal, intake door is opened)In operation, potentiometer delivers intake door position transformed into voltage value to A/C ECU.

DTC Description

Air conditioner Control Module sets DTC B2408 if Feedback signal of Intake actuator has not been moved to the mode,where air condition control module controls, within 10 seconds.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

•

Voltage check

1.

Poor contact in harness

2.

Open or short in motor power circuit

3.

Faulty Intake actuator

4.

Faulty air conditioner control module

Enable Conditions

•

IG KEY ON

Threshold value

•

No movement to controlled mode position for 10 seconds

Failsafe

•

Fixed as current position

Specification
※ Voltage value of Intake potentiometer as a function of position of Intake door

Door position

Voltage

FRE

0.5 V

REC

4.5 V

Diagnostic Circuit Diagram
note
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