Nissan Sentra B18 (2020-2025) Service Manual: C1f48-62 Vehicle Speed Sensor

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
C1F48	62	VHCL SPEED SE CIRC (Nissan Sentra Vehicle speed sensor circuit)	Diagnosis condition	When engine is running When AEB system is ON
			Signal (terminal)	CAN communication signal
			Threshold	If the Nissan Sentra vehicle speed signal (wheel speed) from ABS actuator and electric unit (control unit) and the output speed sensor signal from TCM, received by the ADAS control unit 2 via CAN communication, are inconsistent
			Diagnosis delay time	1 second or less

POSSIBLE CAUSE

• Wheel speed sensor

• ABS actuator and electric unit (control unit)

• Output speed sensor

• TCM

• ADAS control unit 2

FAIL-SAFE

The following systems are canceled.

• Nissan Sentra Vehicle-to-vehicle distance control mode

• Conventional (fixed speed) cruise control mode

• AEB

• LDW

• TSR

• BSW

• RCTA

• I-FCW

• RAB

Confirmation Procedure

Confirmation Procedure

1. CHECK DTC PRIORITY

   If DTC “C1F48-62” is displayed with Network-DTC, “C1F48-04” or “C1F48-29” first diagnose the Network-DTC, “C1F48-04” or “C1F48-29”.

   Is applicable DTC detected?

   YES >>

   Perform diagnosis of applicable.

   • Network-DTC: DTC Index

   • C1F48-04: DTC Description

   • C1F48-29: DTC Description

   NO >>

   GO TO 2 .

2. PERFORM DTC CONFIRMATION PROCEDURE

   1. Start the engine.

   2. Turn the AEB system ON.

   3. Drive the Nissan Sentra vehicle at 30 km/h (19 MPH) or more.

      CAUTION:

      Always drive safely.

   4. Stop the Nissan Sentra vehicle.

   5. Perform “All DTC Reading” with CONSULT.

   6. Check if the “C1F48-62” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS 2”.

   Is “C1F48-62” detected as the current malfunction?

   YES >>

   DTC Diagnosis Procedure

   NO-1 >>

   To check malfunction symptom before repair: Intermittent Incident

   NO-2 >>

   Confirmation after repair: INSPECTION END

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

1. CHECK DTC PRIORITY

   If DTC “C1F48-62” is displayed with Network-DTC, “C1F48-04” or “C1F48-29” first diagnose the Network-DTC, “C1F48-04” or “C1F48-29”.

   Is applicable DTC detected?

   YES >>

   Perform diagnosis of applicable.

   • Network-DTC: DTC Index

   • C1F48-04: DTC Description

   • C1F48-29: DTC Description

   NO >>

   GO TO 2. .

2. CHECK TCM SELF-DIAGNOSIS RESULTS

   1. Perform “All DTC Reading”.

   2. Check if any DTC is detected in “Self Diagnostic Result” of “TRANSMISSION”.

   Is any DTC detected?

   YES >>

   Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. DTC Index

   NO >>

   GO TO 3.

3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS

   Check if any DTC is detected in “Self Diagnostic Result” of “ABS”.

   Is any DTC detected?

   YES >>

   Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. DTC Index

   NO >>

   Replace the ADAS control unit 2. Removal and Installation