Reverse Signal Check (With A/T)

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

REVERSE LAMP CHECK
1. Turn the ignition switch ON.
2. With the A/T selector lever in R-position. Is the indicator turned on?
YES or NO

YES : GO TO 2.

NO : Check back up lamp system. Refer to BACK-UP LAMP .
REVERSE SIGNAL CHECK
1. With the A/T selector lever in R-position.
2. Check voltage between NAVI control unit and ground.
  
  Fig 1: Checking REVERSE SIGNAL WITH A/T Voltage Between NAVI Control Unit And Ground (1 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking REVERSE SIGNAL WITH A/T Voltage Between NAVI Control Unit And Ground (2 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK : Replace NAVI control unit.

NG : Harness for open or short between NAVI control unit and back-up lamp relay.