Illumination Signal Check

WARNING: This page is about a different car, the 2004 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

TAIL LAMP OPERATION CHECK
When lighting switch turned 1st or 2nd position, does tail lamp illuminate?

YES or NO
1. YES: GO TO 2.
2. NO: Go to tail lamp trouble diagnosis. Refer to PARKING, LICENSE PLATE AND TAIL LAMPS DO NOT ILLUMINATE .

ILLUMINATION SIGNAL CHECK

Check voltage between NAVI control unit and ground.

TERMINAL

Terminals			Lighting switch position	Voltage (V)
(+)		(-)
Connector	Terminal (wire color)	(-)
M57	9 (R/L)	Ground	1st or 2nd position	Approx.12V
M57	9 (R/L)	Ground	OFF	Approx. 0V

Fig 1: Checking Voltage Between NAVI Control Unit And Ground

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

OK or NG

OK: Replace NAVI control unit.
NG: Check harness for open or short between NAVI control unit and IPDM E/R. Refer to WIRING DIAGRAM -- TAIL/L -- .