1.CHECK RECEIVER INPUT SIGNAL

1. Turn the ignition switch ON.
   ■ CAUTION ■
   Never start the engine.
2. Use an oscilloscope and check the input signal waveform between the low tire pressure warning control unit harness connector terminals and the ground.

   Connector | Terminal | — | Condition | Standard
   M14 | 22 | Ground | Standby status |
   21
   20
   19

Is the inspection result normal?
YES>>INSPECTION END
NO>>GO TO 2.
2.CHECK TIRE PRESSURE RECEIVER POWER SUPPLY CIRCUIT

1. Turn the ignition switch OFF.
2. Disconnect the tire pressure receiver harness connector.
3. Check the voltage between the tire pressure receiver harness connector and ground.

   Connector | Terminal | — | Voltage
   E16 (Front LH) | 1 | Ground | 7 - 16 V
   E44 (Front RH)
   B58 (Rear LH)
   B246 (Rear RH)

Is the inspection result normal?
YES>>GO TO 3.
NO>>Repair or replace error-detected part.
3.CHECK TIRE PRESSURE RECEIVER GROUND CIRCUIT

1. Disconnect the low tire pressure warning control unit harness connector and tire pressure receiver harness connector.
2. Check the continuity between the low tire pressure warning control unit harness connector and tire pressure receiver harness connector.

   Low tire pressure warning control unit | Tire pressure receiver | Continuity
   M14 | 26 | E16 (Front LH) | 4 | Existed
   25 | E44 (Front RH)
   24 | B58 (Rear LH)
   23 | B246 (Rear RH)

Is the inspection result normal?
YES>>GO TO 4.
NO>>Repair or replace error-detected parts.
4.CHECK FOR CHANGE TO THE TIRE PRESSURE RECEIVER INSTALLATION POSITION. (EXAMPLE: FRONT LH RECEIVER OK/NG JUDGMENT)
With CONSULT-III

1. Exchange the front LH tire pressure receiver with the front RH tire pressure receiver.
2. Perform low tire pressure warning control unit self-diagnosis.

Is DTC “C1751” detected?
YES>>Replace the front RH tire pressure receiver.
NO>>Perform trouble diagnosis of the low tire pressure warning control unit. Refer to Diagnosis Procedure (GT-R certified NISSAN dealer).