Diagnosis Procedure
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The Signal Tech II Tool [- (J-50190)] can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.
- Activate and display TPMS sensor IDs
- Display tire pressure reported by the TPMS sensor
- Read TPMS DTCs
- Register TPMS sensor IDs
- CHECK CAN IGNITION SIGNAL
With CONSULT
- Select Data Monitor from INTELLIGENT KEY of BCM.
- Check IGN RLY1 - F/B value.
Monitor item
Displayed value
IGN RLY1 -F/B
On with ignition in ON position
Is the inspection result normal?
YES
GO TO 2.
NO
Check CAN system. Refer to Trouble Diagnosis Flow Chart .
- CHECK BCM POWER SUPPLY AND GROUND
Check BCM power supply and ground. Refer to Diagnosis Procedure .
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace harness or connectors.
- DRIVE VEHICLE
Clear DTC and test drive vehicle to check for low tire pressure warning lamp.
Does the vehicle operate without any low tire pressure warning lamp?
YES
Inspection End.
NO
Replace BCM. Refer to Removal and Installation .