Low Tire Pressure Warning Lamp Does Not Turn Off

LOW TIRE PRESSURE WARNING LAMP DOES NOT TURN OFF


Description


DESCRIPTION
The tire pressure monitoring system is checked and the warning lamp is illuminated for approximately 1 second when the ignition switch is turned ON. The low tire pressure warning lamp turns OFF after the system check finishes.
The system may be malfunctioning if the low tire pressure warning lamp does not turn off approximately 1 second after the ignition switch is turned ON.




LOW TIRE PRESSURE WARNING LAMP DOES NOT TURN OFF


Diagnosis Procedure

1.CHECK SYSTEM FOR BCM
With CONSULT-III
1. On "SELF-DIAG" mode, select the "SELF-DIAG RESULTS" screen.
2. Check display contents in self-diagnostic results.
Does self-diagnostic results indicate any malfunction?
YES - Perform trouble diagnosis.
NO - GO TO 2.
CHECK ID REGISTRATION
Perform ID registration of all transmitters. Refer to Special Repair Requirement.
Does low tire pressure warning lamp turn OFF?
YES - INSPECTION END
NO - GO TO 3.
3.CHECK BCM POWER SUPPLY CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect BCM harness connector.
3. Check voltage between BCM harness connector and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Check the following. If any items are damaged, repair or replace damaged parts.
- 40 A fusible link [No. K located in the fuse block]. Refer to Fuse, Fusible Link and Relay Box.
- 10 A fuse [No. 10 located in the fuse block (J/B)]. Refer to Fuse Block - Junction Box (J/B).
- Harness for short or open between battery and BCM harness connector M118 terminal 1.
- Harness for short or open between battery and BCM harness connector M119 terminal 11.
- Check battery voltage.
4.CHECK BCM GROUND CIRCUIT
Check continuity between BCM harness connector and ground.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair or replace damaged parts.
5.CHECK SYMPTOM
Check symptom again.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 6.
6.CHECK BCM
Check BCM input/output signal. Refer to Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES - GO TO 5.
NO - GO TO 7.
7.CHECK BCM HARNESS CONNECTOR
Check BCM pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES - Replace BCM. Refer to Removal and Installation.
NO - Repair or replace damaged parts.