Nissan Rogue (T33) 2021-Present Service Manual: C1f95-11 System Backup Function

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)
DTC detection condition
C1F95 11

System BU func power supply circ

(System backup function power supply circuit)
Diagnosis condition When engine is running
Signal (terminal) —
Threshold

When any of the following conditions occur

  • When the power supply voltage is abnormally high or low

  • Internal error of DC / DC converter

  • Internal error of power network separate relay

  • When the ECM could not receive the CAN communication signal

Diagnosis delay time Continues within 1 second to 20 seconds or more (depending on the threshold)

POSSIBLE CAUSE

  • DC / DC converter

  • Power network separate relay

  • 12V sub battery (Li-on battery)

  • CAN communication circuit

  • 12V battery

FAIL-SAFE

The following system are cancelled.

  • Lane keep function*

  • Lane change support function

  • Overtaking support function

  • Route driving support function

*: ProPILOT Assist 2.1 display is blue

CONFIRMATION PROCEDURE

CHECK DTC PRIORITY

If DTC “C1F95-11� 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.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Start the engine, and then wait for 20 seconds or more.

  2. Perform “All DTC Reading� with CONSULT.

  3. Check if the “C1F95-11� is detected as the current malfunction in “Self Diagnostic Result� of “ICC/ADAS 2�.

Is “C1F95-11� detected as the current malfunction?

YES>>

Refer to DTC Diagnosis Procedure.

NO-1>>

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

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK DTC PRIORITY

If DTC “C1F95-11� 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.

CHECK ECM SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result� of “Side radar (Rear left)� or "ENGINE".

Is any DTC detected?

YES>>

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

NO>>

GO TO 2.

CHECK POWER NETWORK SEPARATE RELAY SELF-DIAGNOSIS RESULTS

Check if “B23C0-04� is detected in “Self Diagnostic Result� of “PNS relay".

Is any DTC detected?

YES>>

Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to DTC Diagnosis Procedure.

NO>>

GO TO 2.

CHECK 12V SUB BATTERY (Li-ON BATTERY) SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result� of “Li-ON 12V battery".

Is any DTC detected?

YES>>

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

NO>>

Perform “All DTC Reading� with CONSULT and delete the memory of self-diagnosis results.

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