DTC Confirmation Test

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the following test to check overall function of brake switch circuit. During this test, DTC may not be confirmed.

Malfunction is detected when brake switch signal is not sent to ECM for an extremely long time when driving. Possible causes are:

Brake switch circuit open or shorted.
Poor connections.
Defective brake switch.

To set DTC, turn ignition on. Fully depress brake pedal for 5 seconds. Erase DTC. Using scan tool, select DATA MONITOR. Wait at least 5 seconds. If first trip DTC is detected, perform DIAGNOSTIC PROCEDURE .