Stop Lamp Switch

Turn ignition switch OFF.
Disconnect stop lamp switch harness connector.
Check harness continuity between stop lamp switch terminals 1 and 2 under the following conditions.

Fig 1: Checking Harness Continuity Between Stop Lamp Switch Terminals 1 And 2
Courtesy of NISSAN MOTOR CO., U.S.A.

ON BOARD DIAGNOSTIC LOGIC

CONDITION	Continuity
When brake pedal: Fully released.	Should not exist.
When brake pedal: Slightly depressed.	Should exist.

If NG, adjust stop lamp switch installation, refer to "BRAKE PEDAL ", and perform step 3 again.