Nissan Sentra B18 (2020-2025) Service Manual / Brakes / Brake Control System :: Vdc/tcs/abs / Dtc/circuit Diagnosis / C106b-64 Stop Lamp Switch

Nissan Sentra B18 (2020-2025) Service Manual: C106b-64 Stop Lamp Switch

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen item (Trouble diagnosis content)		DTC detection condition
C106B-64	Stop lamp SW (Stop lamp switch)	—	Diagnosis condition	When ignition switch is ON. When the power supply voltage is normal.
			Signal (terminal)	CAN communication
			Threshold	When stop lamp switch signal is not input when brake pedal operates.
			Diagnosis delay time	3 second or less

POSSIBLE CAUSE

Note:

Confirm if DTC is PAST or CRNT. If DTC is CRNT, proceed with Diagnosis Procedure. If DTC is PAST, clear DTC. Do not replace the ABS actuator and electric unit (control unit) for a PAST DTC.

PAST DTC	CRNT DTC
Harness or connector Stop lamp switch signal circuit ABS actuator and electric unit (control unit) power supply system Fuse Fusible link 12V battery	Harness or connector CAN communication line Stop lamp switch BCM ABS actuator and electric unit (control unit) ABS actuator and electric unit (control unit) power supply system Fuse Fusible link 12V battery

FAIL-SAFE

The following functions are suspended:

VDC function
TCS function
Brake assist function
Hill start assist function

Confirmation Procedure

Confirmation Procedure

PRECONDITIONING
1. If “Confirmation Procedure” has been previously conducted, always place the ignition switch in the OFF position and wait at least 10 seconds before conducting the next test.
>>
GO TO 2.
CHECK DTC DETECTION
1. CONSULT
  1. Ignition switch OFF, and wait 10 seconds or more.
  2. Start the engine.
    Note:
    Stop the Nissan Sentra vehicle.
  3. Wait 1 minute or more.
    Note:
    Never depress brake pedal.
  4. Depress brake pedal by 3.94 in (100 mm) or more, and maintain at that position for a minimum of 1 minute or more.
  5. Release brake pedal, and wait 1 minute or more.
  6. Ignition switch OFF.
    Note:
    Wait at least 10 seconds after placing ignition switch in the OFF position.
  7. Start the engine.
    Note:
    Wait at least 10 seconds after start the engine.
  8. Select "Self Diagnostic Result" mode of "ABS".
Is DTC “C106B-64” detected?
YES >>
“CRNT” is displayed: Refer to DTC Diagnosis Procedure.
YES >>
“PAST” is displayed: Inspection End. (Erase "Self Diagnostic Result" mode of "ABS".)
NO >>
To check malfunction symptom before repair: Refer to Intermittent Incident.
NO >>
Confirmation after repair: Inspection End.

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

CHECK BCM SYSTEM
1. CONSULT
  
  Select "Self Diagnostic Result" mode of "BCM". Refer to Diagnosis Description.
Is DTC detected?
YES >>
Check the DTC. Refer to DTC Index.
NO >>
GO TO 2.
CHECK CONNECTOR AND TERMINAL
1. 1. Ignition switch OFF.
  2. Disconnect BCM harness connector.
  3. Disconnect ABS actuator and electric unit (control unit) harness connector.
  4. Check the connector for disconnection or looseness.
  5. Check the pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES >>
GO TO 3.
NO >>
Repair / replace harness, connector, or terminal, securely lock the connector, and GO TO 3.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
1. CONSULT
  1. Connect BCM harness connector.
  2. Connect ABS actuator and electric unit (control unit) harness connector.
  3. Erase "Self Diagnostic Result" mode of “ABS””.
  4. Ignition switch OFF.
    Note:
    Wait at least 10 seconds after placing ignition switch in the OFF position.
  5. Start the engine.
    Note:
    Wait at least 10 seconds after Start the engine.
  6. Select "Self Diagnostic Result" mode of "ABS".
Is DTC “C106B-64” detected?
YES >>
Replace the ABS actuator and electric unit (control unit). Refer to Removal and Installation.
NO >>
Inspection End.

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