Low Tire Pressure Warning Lamp Flashes When Ignition Switch Is Turned On

TROUBLE DIAGNOSIS FOR SYMPTOMS

Low Tire Pressure Warning Lamp Flashes When Ignition Switch Is Turned On

NOTE:
If low tire pressure warning lamp flashes as shown, the system is normal.
Flash Mode A





- This mode shows transmitter status is OFF-mode.
Carry out transmitter wake up operation. Transmitter Wake Up Operation.

1. CHECK BCM CONNECTORS

1.Turn ignition switch OFF.
2.Disconnect BCM harness connectors M18 and M20.
3.Check terminals for damage or loose connections.
Inspection results OK?
YES- GO TO 2.
NO- Repair or replace damaged parts.

2. CHECK TIRE PRESSURE WARNING CHECK CONNECTOR CIRCUIT

Check continuity between BCM harness connector M18 terminal 15 and ground.





Continuity should not exist.
Does continuity exist?
YES- Repair circuit for short to ground.
NO- Replace BCM. Service and Repair.