1.POWER SUPPLY AND GROUND CIRCUIT Check power supply and ground circuit. Refer to Diagnosis Procedure (GT-R certified NISSAN dealer). Is the inspection result normal? YES>>GO TO 2. NO>>Repair or replace the malfunctioning parts.
2.PERFORM THE SELF-DIAGNOSIS
With CONSULT-III
Perform low tire pressure warning control unit self-diagnosis.
Is DTC “U1000” detected?
YES>>Perform trouble diagnosis for CAN communication system. Refer to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>GO TO 3.
3.CHECK LOW TIRE PRESSURE WARNING LAMP SIGNAL
With CONSULT-III

1. Turn the ignition switch ON.
   ■ CAUTION ■
   Never start the engine.
2. Select “DATA MONITOR” mode for “AIR PRESSURE MONITOR” with CONSULT-III.
3. Read out the value of “WARNING LAMP”.

Does the data monitor display change from ON to OFF?
YES>>GO TO 4.
NO>>Replace the low tire pressure warning control unit. Refer to Exploded View (GT-R certified NISSAN dealer).
4.CHECK COMBINATION METER POWER SUPPLY CIRCUIT
Perform trouble diagnosis of the combination meter power supply circuit.
Is the inspection result normal?
YES>>INSPECTION END
NO>>Repair or replace error-detected part.