Nissan Sentra B18 (2020-2025) Service Manual: C1f4f-82 Bcm Can Circuit 1

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
C1F4F	82	BCM CAN CIR 1 (Body control module controller area network circuit 1)	Diagnosis condition	When engine is running
			Signal (terminal)	CAN communication signal
			Threshold	If ADAS control unit 2 detects an error signal that is received from BCM via CAN communication
			Diagnosis delay time	1 second or less

POSSIBLE CAUSE

BCM

FAIL-SAFE

The following systems are canceled.

• Nissan Sentra Vehicle-to-vehicle distance control mode

• Conventional (fixed speed) cruise control mode

• AEB

• I-DA

• RAB

Confirmation Procedure

Confirmation Procedure

1. CHECK DTC PRIORITY

   If DTC “C1F4F-82” is displayed with Network-DTC, first diagnose the Network-DTC.

   Is applicable DTC detected?

   YES >>

   Perform diagnosis of applicable. Refer to DTC Index .

   NO >>

   GO TO 2 .

2. PERFORM DTC CONFIRMATION PROCEDURE

   1. Turn the ignition switch ON.

   2. Perform “All DTC Reading” with CONSULT.

   3. Check if the “C1F4F-82” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS 2”.

   Is “C1F4F-82” detected as the current malfunction?

   YES >>

   Refer to Diagnosis Procedure.

   NO-1 >>

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

   NO-2 >>

   Confirmation after repair: INSPECTION END

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

1. CHECK DTC PRIORITY

   If DTC “C1F4F-82” is displayed with Network-DTC, first diagnose the Network-DTC.

   Is applicable DTC detected?

   YES >>

   Perform diagnosis of applicable. DTC Index

   NO >>

   GO TO 2 .

2. PERFORM SELF-DIAGNOSIS OF BCM

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

   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