1.CHECK TIRE PRESSURE WARNING CHECK SWITCH POWER SUPPLY CIRCUIT

1. Turn the ignition switch ON.
   ■ CAUTION ■
   Never start the engine.
2. Check the voltage between tire pressure warning check switch connector and ground.

   Tire pressure warning check switch | — | Voltage (Approx.)
   Connector | Terminal
   M23 | 1 | Ground | 7.6 - 14.6 V

Is the inspection result normal?
YES>>Repair or replace low tire pressure warning control unit. Replace low tire pressure warning control unit. Refer to Exploded View (GT-R certified NISSAN dealer).
NO>>GO TO 2.
2.CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT

1. Turn the ignition switch OFF.
2. Disconnect low tire pressure warning control unit harness connector
3. Check the continuity between low tire pressure warning control unit harness connector and tire pressure warning check switch connector.

   Low tire pressure warning control unit | Tire pressure warning check switch | Continuity
   Connector | Terminal | Connector | Terminal | Existed
   M14 | 12 | M23 | 1

4. Check the continuity between low tire pressure warning control unit harness connector and ground.

   Low tire pressure warning control unit | — | Continuity
   Connector | Terminal
   M14 | 12 | Ground | Not existed

Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace error-detected parts.
3.CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT
Check the low tire pressure warning control unit input/output signal. Refer to Reference Value (GT-R certified NISSAN dealer).
Is the inspection result normal?
YES>>INSPECTION END
NO>>Check low tire pressure warning control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts. Replace low tire pressure warning control unit. Refer to Exploded View (GT-R certified NISSAN dealer).