Nissan Sentra B18 (2020-2025) Service Manual: B24f5-93 Mode Door Motor
Dtc Description
DTC Description
DTC DETECTION LOGIC
Note:
If all of door motors DTC (B24F5-93, B24F6-93, B24F7-93, B24F8-93) are detected, check “DOOR MOTOR CIRCUIT”. Refer to Diagnosis Procedure.
|
DTC No. |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
|
|---|---|---|---|
|
B24F5-93 |
Mode door motor (Mode door motor) |
Diagnosis condition |
Ignition switch ON |
|
Signal (Terminal) |
LIN (Door motor) signal |
||
|
Threshold |
Drive error of mode door motor is detected |
||
|
Diagnosis delay time |
2 seconds or more |
||
POSSIBLE CAUSE
-
Harness and connector (mode door motor circuit is open or shorted to ground)
-
Mode door motor installation condition
-
Mode door motor
-
A/C auto amp.
FAIL-SAFE
—
Confirmation Procedure
Confirmation Procedure
-
PERFORM DTC CONFIRMATION PROCEDURE
-
CONSULT-
Ignition switch ON.
-
Select “Self Diagnostic Result” mode of “HVAC”.
-
Check DTC.
-
Is DTC detected?
YES>>Refer to DTC Diagnosis Procedure.
NO>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>Confirmation after repair: Inspection End.
-
Dtc Diagnosis Procedure
DTC Diagnosis Procedure
-
CHECK MODE DOOR MOTOR POWER SUPPLY
-
-
Ignition switch ON.
-
Check voltage between mode door motor harness connector and ground.
+
–
Voltage
(Approx.)
Mode door motor
Connector
Terminal
M166
1
Ground
Battery voltage
-
Is the inspection result normal?
YES >>GO TO 2.
NO >>GO TO 5.
-
-
CHECK MODE DOOR MOTOR GROUND CIRCUIT FOR OPEN
-
-
Ignition switch OFF.
-
Disconnect mode door motor connector.
-
Check continuity between mode door motor harness connector and ground.
Mode door motor
—
Continuity
Connector
Terminal
M166
2
Ground
Yes
-
Is the inspection result normal?
YES >>GO TO 3.
NO >>Repair harness or connector.
-
-
CHECK MODE DOOR MOTOR LIN SIGNAL CIRCUIT
-
-
Connect mode door motor connector.
-
Ignition switch ON.
-
Confirm output waveform between mode door motor harness connector and ground with oscilloscope.
+
-
Output waveform
Mode door motor
Connector
Terminal
M166
3
Ground

-
Is the inspection result normal?
YES >>GO TO 4.
NO >>GO TO 6.
-
-
CHECK INSTALLATION OF MODE DOOR MOTOR
-
Check mode door motor is properly installed. Refer to Exploded View.
Is the inspection result normal?
YES >>Replace mode door motor. Refer to Removal and Installation.
NO >>Repair or replace malfunctioning part.
-
-
CHECK MODE DOOR MOTOR POWER SUPPLY CIRCUIT FOR OPEN
-
-
Ignition switch OFF.
-
Disconnect mode door motor connector and A/C auto amp. connector.
-
Check continuity between mode door motor harness connector and A/C auto amp. harness connector.
Mode door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M166
1
M33
1
Yes
-
Is the inspection result normal?
YES >>Replace A/C auto amp. Refer to Removal and Installation.
NO >>Repair harness or connector.
-
-
CHECK MODE DOOR MOTOR LIN SIGNAL CIRCUIT FOR OPEN
-
-
Ignition switch OFF.
-
Disconnect mode door motor connector and A/C auto amp. connector.
-
Check continuity between mode door motor harness connector and A/C auto amp. harness connector.
Mode door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M166
3
M33
22
Yes
-
Is the inspection result normal?
YES >>Replace A/C auto amp. Refer to Removal and Installation.
NO >>Repair harness or connector.
-
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