B1442/42 - Air Inlet Damper Control Servo Motor Circuit
DESCRIPTION
The air inlet control servo motor sends pulse signals to indicate the damper position to the A/C amplifier. The A/C amplifier activates the motor
(normal or reverse) based on these signals to move the air inlet mode selection air inlet control damper to any position, which controls the intake air
settings (FRESH, FRESH/RECIRCULATION, and RECIRCULATION).
The A/C amplifier communicates with the servo through a communication/driver IC and wiring assembly called the air conditioning harness.
HINT
Confirm that no mechanical problem is present because this DTC can be output when either a damper link or the damper is
mechanically locked.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Operate the R/F (Recirculation/Fresh) switch.
(e) Enter the following menus: Body Electrical / Air Conditioner / Data List.
(f) Check the value(s) by referring to the table below.
Air Conditioner
OK:
The display is as specified in the Normal Condition column.
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