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 GROUND 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	15	M33	33	Exists

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 GROUND CIRCUIT

Connect AV control unit connector.
Turn power switch ON.

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

CONTINUITY REFERENCE CHART

AV control unit		Ground	Continuity
Connector	Terminal
M83	15		Exists

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 ".

Component Inspection

Measure the resistance between the steering switch connector terminals 14 to 17 and 15 to 17.

Standard,:

Between terminals 14 and 17

switch ON : 2003 - 2043 Ω

switch ON : 716 - 730 Ω

switch ON : 318 - 324 Ω

switch ON : 120 - 122 Ω

SOURCE switch ON : 0 Ω

Between terminals 15 and 17

switch ON : 716 - 730 Ω

switch ON : 318 - 324 Ω

switch ON : 120 - 122 Ω

switch ON : 0 Ω

Fig 1: Measuring Resistance Between Steering Switch Connector Terminals 14 To 17 And 15 To 17

Courtesy of NISSAN MOTOR CO., U.S.A.