Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to "SELF-DIAGNOSTIC RESULT MODE ".

Is a malfunction in the CAN communication indicated in the results?
1. YES: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".
2. NO: GO TO 2.
CHECK STOP LAMP SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch "ON". (Do not start engine.)
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out ON/OFF switching action of the "BRAKE SW".
OK or NG
1. OK: INSPECTION END
2. NG: GO TO 3.
  
  Fig 1: CONSULT-II Display - Data Monitor
  Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK STOP LAMP SWITCH

Check continuity between stop lamp switch harness connector terminals 1 and 2.

STOP LAMP SWITCH CONTINUITY

Item	Connector	Condition	Terminal	Continuity
Stop lamp switch harness connector	E38	When brake pedal is depressed	1 - 2	Yes
Stop lamp switch harness connector	E38	When brake pedal is released	1 - 2	No

Check stop lamp switch after adjusting brake pedal - refer to " BRAKE PEDAL " .

Fig 2: Checking Stop Lamp Switch Continuity

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

OK or NG

OK: Check the following. If NG, repair or replace damaged parts.
- Harness for short or open between battery and stop lamp switch.
- Harness for short or open between stop lamp switch and combination meter.
NG: Repair or replace the stop lamp switch.