Nissan Sentra B18 (2020-2025) Service Manual: B2e0b Telematics Switch

Nissan Sentra B18 (2020-2025) Service Manual / Driver Information & Multimedia / Audio, Visual & Navigation System :: Telematics System / Dtc/circuit Diagnosis / B2e0b Telematics Switch

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
B2E0B-01	SOS LED (Auto) [SOS LED (Auto)]	1	Diagnosis condition	When ignition switch is ON
			Signal (terminal)	SOS switch LED (Green) signal (terminal 5)
			Threshold	Not connected or open circuit
			Diagnosis delay time	1 second or more
		2	Diagnosis condition	When ignition switch is ON
			Signal (terminal)	SOS switch LED (Green) signal (terminal 5)
			Threshold	1.2 V or less
			Diagnosis delay time	1 second or more
		3	Diagnosis condition	When ignition switch is ON
			Signal (terminal)	SOS switch LED (Green) signal (terminal 5)
			Threshold	5.8 V or more
			Diagnosis delay time	1 second or more

POSSIBLE CAUSE

Moonroof switch assembly (telematics switch) is not connected,
SOS switch LED (Green) signal is open
SOS switch LED (Green) signal is short to ground
SOS switch LED (Green) signal is short to battery

FAIL-SAFE

Telematics system does not operate

Confirmation Procedure

Confirmation Procedure

PERFORM DTC CONFIRMATION PROCEDURE
1. CONSULT
  1. Ignition switch ON.
  2. Ignition switch OFF and wait at least 30 seconds.
  3. Ignition switch ON and wait at least 30 seconds or more.
  4. Select “Self Diagnostic Result” mode of “IVC”.
  5. Check DTC.
Is DTC B2E0B–01 detected?
YES>>
Proceed 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 SOS SWITCH LED (GREEN) SIGNAL

Ignition switch ON.

Check the voltage between TCU connector and ground.

(+)		(-)	Condition	Voltage (Approx.)
TCU
Connector	Terminal
M160	5	Ground	SOS switch LED (Green) not illuminated	5 V
M160	5	Ground	SOS switch LED (Green) illuminated	0 V

Is the inspection result normal?

YES >>

GO TO 2.

NO >>

Replace TCU. Refer to Removal and Installation.

CHECK SOS SWITCH LED (GREEN) SIGNAL CIRCUIT FOR OPEN

Ignition switch OFF.
Disconnect TCU connector and moonroof switch assembly (telematics switch) connector.

Check the continuity between TCU connector and moonroof switch assembly (telematics switch) connector.

TCU		Moonroof switch assembly (telematics switch)		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M160	5	R27	5	Yes

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace harness or connector.

CHECK SOS SWITCH LED (GREEN) SIGNAL CIRCUIT FOR SHORT

Ignition switch ON.

Check the voltage between TCU connector and ground.

(+)	(-)	Voltage (Approx.)
M160	5	Ground	0 V

(+)

(-)

Voltage

(Approx.)

TCU

Connector

Terminal

M160

Ground

0 V

Is the inspection result normal?

YES >>

GO TO 4.

NO >>

Repair or replace harness or connector.

CHECK SOS SWITCH LED (GREEN) SIGNAL CIRCUIT FOR SHORT

Ignition switch OFF.

Check the continuity between TCU connector and ground.

TCU		—	Continuity
Connector	Terminal	—	Continuity
M160	5	Ground	No

Is the inspection result normal?

YES >>

Replace moonroof switch assembly (telematics switch). Refer to Removal and Installation.

NO >>

Repair or replace harness or connector.

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