Diagnosis Flow

WARNING: This page is about a different car, the 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

CHECK WARNING LAMP ILLUMINATION
1. Turn ignition switch ON.
2. Make sure that warning lamps (such as MIL and oil pressure warning lamp) illuminate.
Do warning lamps illuminate?

YES >> GO TO 2.

NO >> Check ignition power supply system of combination meter. Refer to , "POWER SUPPLY AND GROUND CIRCUIT INSPECTION ".
CHECK SELF-DIAGNOSIS OPERATION
Perform combination meter self-diagnosis. Refer to "SELF-DIAGNOSIS FUNCTION ".

Does self-diagnosis function operate?

YES: >> GO TO 3.

NO >> Check battery power supply of combination meter and ground system. Refer to "POWER SUPPLY AND GROUND CIRCUIT INSPECTION ".
CHECK ODO/TRIP METER OPERATION
Check segment display status of odo/trip meter. Refer to "SELF-DIAGNOSIS FUNCTION ".

Fig 1: Checking ODO/ Meter Display Status
Courtesy of NISSAN MOTOR CO., U.S.A.

Is the display normal?

YES >> GO TO 4.

NO >> Replace combination meter.
CHECK FUEL WARNING LAMP ILLUMINATION
During fuel warning lamp check, confirm illumination of fuel warning lamp.

Fig 2: Checking Fuel Warning Lamp Illumination
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK >> GO TO 5.

NG >> Replace combination meter.
CHECK METER CIRCUIT
Check indication of each meter/gauge in self-diagnosis mode. Refer to "SELF-DIAGNOSIS FUNCTION ".

Fig 3: Checking Indication Of Each Meter/Gauge In Self-Diagnosis Mode
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK >> GO to diagnosis results. Refer to "DIAGNOSIS RESULTS ".

NG >> Replace combination meter.