Nissan Rogue (T33) 2021-Present Service Manual: B24f8-93 Air Mix Door Motor 2

Nissan Rogue (T33) 2021-Present Service Manual / Ventilation, Heater & Air Conditioner :: Heater & Air Conditioning Control System / Manual Air Conditioning :: Dtc/circuit Diagnosis / B24f8-93 Air Mix Door Motor 2

DTC Description

DTC DETECTION LOGIC

NOTE:

If all of door motors DTC (B24F5-93, B24F6-93, B24F8-93) are detected, check “DOOR MOTOR”. Refer to Diagnosis Procedure.

DTC No.

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
B24F8-93

Air mix door motor 2

(Air mix door motor 2) 		Diagnosis condition Ignition switch ON
Signal (Terminal) LIN (door motor) signal
Threshold Drive error of air mix door motor is detected
Diagnosis delay time 2 second or more

POSSIBLE CAUSE

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

  • Air mix door motor installation condition

  • Air mix 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 AIR MIX DOOR MOTOR POWER SUPPLY

  1. Ignition switch ON.

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

(+) (−) Voltage
Air mix door motor A/C amp.
Connector Terminal Connector Terminal
M146 1 M55 58 Battery voltage

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

GO TO 5.

CHECK AIR MIX DOOR MOTOR GROUND CIRCUIT FOR OPEN

  1. Ignition switch OFF.

  2. Disconnect air mix door motor connector and A/C amp. connector.

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

    Air mix door motor A/C amp. Continuity
    Connector Terminal Connector Terminal
    M146 2 M54 27 Yes

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair harness or connector.

CHECK AIR MIX DOOR MOTOR LIN SIGNAL CIRCUIT

  1. Connect air mix door motor connector and A/C amp. connector.

  2. Ignition switch ON.

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

    (+) (−) Output waveform
    Air mix door motor A/C amp.
    Connector Terminal Connector Terminal
    M146 3 M55 58

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

GO TO 6.

CHECK INSTALLATION OF AIR MIX DOOR MOTOR

Check air mix door motor is properly installed. Refer to Exploded View.

Is the inspection result normal?

YES>>

Replace air mix door motor. Refer to Removal and Installation.

NO>>

Repair or replace malfunctioning part.

CHECK AIR MIX DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN

  1. Ignition switch OFF.

  2. Disconnect air mix door motor connector and A/C amp. connector.

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

    Air mix door motor A/C amp. Continuity
    Connector Terminal Connector Terminal
    M146 1 M54 1 Yes

Is the inspection result normal?

YES>>

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

NO>>

Repair harness or connector.

CHECK AIR MIX DOOR MOTOR LIN SIGNAL CIRCUIT FOR OPEN

  1. Ignition switch OFF.

  2. Disconnect air mix door motor connector and A/C amp. connector.

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

    Air mix door motor A/C amp. Continuity
    Connector Terminal Connector Terminal
    M146 3 M54 2 Yes

Is the inspection result normal?

YES>>

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

NO>>

Repair harness or connector.

    B24f6-93 Intake Door Motor
    DTC Description DTC DETECTION LOGICNOTE: If all of door motors DTC (B24F5-93, B24F6-93, B24F8-93) are detected, check “DOOR MOTOR”. Refer to Diagnosis Procedure. DTC No. CON...
    U1ca1-08 Lin Communication 2
    DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detection condition U1CA1-08 LIN communication 2 (Local interconnect network com...

    Other materials:

    Power Supply and Ground Circuit
    8ch Can Gateway Diagnosis Procedure CHECK FUSE Check that the following fuse are not blown. Signal name Fuse No. Battery power supply 16 Ignition power supply 9 Is the fuse blown (open)? YES>> Replace the blown fuse after repairing the affected circuit if a fuse ...

    Dtc/circuit Diagnosis. Thigh Support Motor
    Component Function Check CHECK FUNCTION CONSULT Ignition switch ON. Select “Thigh support motor” in “Active test” mode of “DRIVER SEAT”. Check thigh support motor LH operation. Test item Operation Thigh support motor Up Thigh support Upward Down ...

    U2b8c-88 Ethernet Circuit
    DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms DTC detected condition U2B8C-88 Ethernet circuit Diagnosis condition When ignition switch is ON. Signal (terminal) — Threshold Lost ethernet communication with driving video recorder control module ...