Inspection 1: Transmitter or Control Unit (BCM) MALFUNCTION CODE NO. 21, 22, 23 OR 24

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONTROL UNIT
Drive for several minutes. Check all tire pressures with CONSULT-II "DATA MONITOR ITEM".

Are all tire pressures displayed as 0 kPa?
1. YES: GO TO 2.
2. NO: GO TO 3.
CHECK REMOTE KEYLESS ENTRY RECEIVER CONNECTOR
Check remote keyless entry receiver connector for damage or loose connections.

OK or NG
1. OK: Replace BCM, then GO TO 3. Refer to "REMOVAL AND INSTALLATION OF BCM ".
2. NG: Repair or replace remote keyless entry receiver connector.
ID REGISTRATION
Carry out ID registration of all transmitters.

Is there a tire that cannot register ID?
1. YES: Replace transmitter of the tire, then GO TO 5. Refer to "TRANSMITTER (PRESSURE SENSOR) ".
2. NO: GO TO 4.
VEHICLE DRIVING
Drive at a speed of 40 km/h (25 MPH) or more for several minutes without stopping. Check all tire pressures with CONSULT-II "DATA MONITOR ITEM" within 15 minutes after vehicle speed becomes 17 km/h (11 MPH).

Does "DATA MONITOR ITEM" display tire pressure as normal without any warning lamp?
1. YES: Inspection End.
2. NO: GO TO 5.
ID REGISTRATION AND VEHICLE DRIVING
1. Carry out ID registration of all transmitters.
2. Drive at a speed of 40 km/h (25 MPH) or more for 3 minutes, and then drive the vehicle at any speed for 10 minutes. Then check all tire pressures with CONSULT-II "DATA MONITOR ITEM" within 5 minutes.
Does "DATA MONITOR ITEM" display tire pressure as normal without any warning lamp?
1. YES: Inspection End.
2. NO: GO TO the appropriate inspection indicated by code.