Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Juke. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONTINUITY BETWEEN TEL ADAPTER UNIT AND MICROPHONE CIRCUIT

Turn ignition switch OFF.
Disconnect TEL adapter unit connector and microphone connector.

Check continuity between TEL adapter unit harness connector and microphone harness connector.

CONTINUITY REFERENCE CHART

TEL adapter unit		Microphone		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M127	7	R2	1	Existed
	8		2
	29		4

Check continuity between TEL adapter unit harness connector and ground.

CONTINUITY REFERENCE CHART

TEL adapter unit		Ground	Continuity
Connector	Terminal
M127	7		Not existed
	29

Is inspection result OK?

YES: GO TO 2.

NO: Repair harness or connector.

CHECK VOLTAGE MICROPHONE VCC

Connect TEL adapter unit connector.
Turn ignition switch ON.
Check voltage between TEL adapter unit harness connector and ground.

VOLTAGE REFERENCE CHART

Probe				Standard	Reference value (Approx.)
(+)		(-)
TEL adapter unit
Connector	Terminal	Connector	Terminal
M127	29	M127	8	4.7 - 5.3 V	5.0 V

Is inspection result OK?

YES: GO TO 3.

NO: Replace TEL adapter unit. Refer to "REMOVAL AND INSTALLATION ".

CHECK MICROPHONE SIGNAL

Turn ignition switch OFF.
Connect microphone connector.
Turn ignition switch ON.
Check signal between TEL adapter unit harness connector.

SIGNAL REFERENCE CHART

Probe				Condition	Standard	Reference value
(+)		(-)
TEL adapter unit
Connector	Terminal	Connector	Terminal
M127	7	M127	8	Give a voice.	Wave form synchronized with voice is input.	Courtesy of NISSAN MOTOR CO., U.S.A.

Is inspection result OK?

YES: Replace TEL adapter unit. Refer to "REMOVAL AND INSTALLATION ".

NO: Replace microphone. Refer to "REMOVAL AND INSTALLATION ".