Diagnostic Procedure

WARNING: This page is about a different car, the 2007 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

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

Is any malfunction of the "U1000 CAN COMM CIRCUIT" indicated?

YES: Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE ".

No: GO TO 2.

CHECK STOP LAMP SWITCH CIRCUIT

With CONSULT-II

Turn ignition switch ON. (Do not start engine.)
Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-II.
Read out ON/OFF switching action of the "BRAKE SW".

BRAKE SWITCH CONDITION

Item name	Condition	Display value
BRAKE SW	Depressed brake pedal	ON
BRAKE SW	Released brake pedal	OFF

Fig 1: CONSULT-II Display - DATA MONITOR

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

OK or NG

OK: INSPECTION END

NG: GO TO 3.

CHECK STOP LAMP SWITCH

Check continuity between stop lamp switch harness connector E38 terminals 1 and 2. Refer to "WIRING DIAGRAM - CVT - NONDTC ".

CONTINUITY REFERENCE

Condition	Continuity
When brake pedal is depressed	Yes
When brake pedal is released	No

Fig 2: Checking Continuity Between Stop Lamp Switch Connector E38 Terminals 1 And 2

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

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

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 unified meter and A/C amp.

NG: Repair or replace the stop lamp switch.