On "SELECT DIAG" mode, select the "SELF-DIAG RESULT" screen for BCM.
Check display contents on "SELF-DIAG RESULT". Does self-diagnostic results indicate any DTC other than C1734?
YES >> Perform trouble diagnosis for DTC. Refer to See: Testing and Inspection.
NO >> GO TO 2. 2.CHECK BCM HARNESS CONNECTORS
Check BCM harness connectors for damage or loose connections.
Are the BCM harness connectors damaged or loose?
YES >> Repair or replace damaged parts.
NO >> GO TO 3. 3.BCM POWER SUPPLY AND GROUND
Check BCM power supply and ground. Refer to See: Body and Frame\Body Control Systems\Testing and Inspection\Component Tests and General Diagnostics\Power Supply And Ground Circuit.
Are the power supply and grounds normal?
YES >> GO TO 4.
NO >> Repair power supply or grounds as necessary. 4.CHECK HARNESS BETWEEN BCM AND TIRE PRESSURE RECEIVER