Nissan Rogue (T33) 2021-Present Service Manual: U1cab-02 Intake Door Motor

Nissan Rogue (T33) 2021-Present Service Manual / Ventilation, Heater & Air Conditioner :: Heater & Air Conditioning Control System / Manual Air Conditioning :: Dtc/circuit Diagnosis / U1cab-02 Intake Door Motor

DTC Description

DTC DETECTION LOGIC

DTC No.

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
U1CAB-02

Intake door motor

(Intake door motor) 		Diagnosis condition Ignition switch ON
Signal (Terminal) LIN (door motor) signal
Threshold A/C amp. is not transmitting or receiving LIN communication with intake door motor
Diagnosis delay time 2 second or more

POSSIBLE CAUSE

  • Harness and connector (intake door motor circuit is open or shorted to ground)

  • Intake door motor

  • A/C amp.

FAIL-SAFE

—

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

  1. Start the engine.

  2. Select "Self diagnosis result" mode of "HVAC".

  3. Check DTC.

Is DTC detected?

YES>>

Refer to Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: Inspection End.

Diagnosis Procedure

CHECK INTAKE DOOR MOTOR POWER SUPPLY

  1. Ignition switch ON.

  2. Check voltage between intake door motor harness connector and A/C amp. harness connector.

(+) (−) Voltage
Intake door motor A/C amp.
Connector Terminal Connector Terminal
M147 1 M55 58 Battery voltage

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

GO TO 4.

CHECK INTAKE DOOR MOTOR GROUND CIRCUIT FOR OPEN

  1. Ignition switch OFF.

  2. Disconnect intake door motor connector and A/C amp. connector.

  3. Check continuity between intake door motor harness connector and A/C amp. harness connector.

    Intake door motor A/C amp. Continuity
    Connector Terminal Connector Terminal
    M147 2 M54 27 Yes

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair harness or connector.

CHECK INTAKE DOOR MOTOR LIN SIGNAL CIRCUIT

  1. Connect intake door motor connector and A/C amp. connector.

  2. Ignition switch ON.

  3. Confirm output waveform between intake door motor harness connector and A/C amp. harness connector with oscilloscope.

    (+) (−) Output waveform
    Intake door motor A/C amp.
    Connector Terminal Connector Terminal
    M147 3 M55 58

Is the inspection result normal?

YES>>

Replace intake door motor. Refer to Removal and Installation.

NO>>

GO TO 6.

CHECK INTAKE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

  1. Ignition switch OFF.

  2. Disconnect intake door motor connector and A/C amp. connector.

  3. Check continuity between intake door motor harness connector and A/C amp. harness connector.

    Intake door motor A/C amp. Continuity
    Connector Terminal Connector Terminal
    M147 1 M54 1 Yes

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Repair harness or connector.

CHECK INTAKE DOOR MOTOR POWER SUPPLY CIRCUIT FOR SHORT

  1. Disconnect air mix door motor connector and mode door motor connector.

  2. Check continuity between intake door motor harness connector and ground.

    Intake door motor (–) Continuity
    Connector Terminal
    M147 1 Ground No

Is the inspection result normal?

YES>>

Replace A/C amp. Refer to Removal and Installation.

NO>>

Repair harness or connector.

CHECK INTAKE DOOR MOTOR LIN SIGNAL CIRCUIT FOR OPEN

  1. Ignition switch OFF.

  2. Disconnect intake door motor connector and A/C amp. connector.

  3. Check continuity between intake door motor harness connector and A/C amp. harness connector.

    Intake door motor A/C amp. Continuity
    Connector Terminal Connector Terminal
    M147 3 M54 2 Yes

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Repair harness or connector.

CHECK INTAKE DOOR MOTOR LIN SIGNAL CIRCUIT FOR SHORT

  1. Disconnect air mix door motor connector and mode door motor connector.

  2. Check continuity between intake door motor harness connector and ground.

    Intake door motor (–) Continuity
    Connector Terminal
    M147 3 Ground No

Is the inspection result normal?

YES>>

Replace A/C amp. Refer to Removal and Installation.

NO>>

Repair harness or connector.

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