Diagnosis Procedure

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

CHECK CONTINUITY OF STEERING SWITCH SIGNAL B CIRCUIT

Turn power switch OFF.
Disconnect AV control unit and spiral cable connectors.

Check for continuity between AV control unit harness connector and spiral cable connector.

CONTINUITY REFERENCE CHART

AV control unit		Spiral cable		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M83	16	M33	31	Exists

Check for continuity between AV control unit harness connector and ground.

CONTINUITY REFERENCE CHART

AV control unit		Ground	Continuity
Connector	Terminal
M83	16		Does not exist

Is the check result normal?

YES: GO TO 2.

NO: Repair the harnesses or connectors.

SPIRAL CABLE INSPECTION
Check the spiral cable.

Is the check result normal?

YES: GO TO 3.

NO: Replace the spiral cable.

CHECK AV CONTROL UNIT VOLTAGE

Connect AV control unit and spiral cable connectors.
Turn power switch ON.

Check voltage between AV control unit harness connectors.

VOLTAGE REFERENCE CHART

Probe				Standard	Reference value
(+)		(-)
AV control unit
Connector	Terminal	Connector	Terminal
M83	16	M83	15	0 - 5.5 V	Approximately 5 V

Is the check result normal?

YES: GO TO 4.

NO: Replace the AV control unit. "REMOVAL AND INSTALLATION ".

CHECK STEERING SWITCH
1. Turn power switch OFF.
2. Check the steering switch. "COMPONENT INSPECTION ".
  Is the check result normal?
  
  YES: INSPECTION END
  
  NO: Replace the steering switch. "REMOVAL AND INSTALLATION ".