Low Tire Pressure Warning Lamp Blinks

LOW TIRE PRESSURE WARNING LAMP BLINKS


Description


DESCRIPTION
The low tire pressure warning lamp illuminates or blinks.
However, a check is necessary because the symptom may not be caused by a system malfunction. For example, the transmitter may not be initialized.

NOTE:
If low tire pressure warning lamp blinks as shown in the figure, the system is normal.
Blink Mode A





- This mode shows transmitter status is in OFF- mode.
Perform transmitter wake up operation. Special Repair Requirement.





LOW TIRE PRESSURE WARNING LAMP BLINKS


Diagnosis Procedure

1.CHECK TIRE PRESSURE WARNING CHECK SWITCH POWER SUPPLY
1. Turn the ignition switch ON.

CAUTION:
Never start the engine.
2. Check voltage between tire pressure warning check switch connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - Riper or replace error-detected damaged parts.
2.CHECK TIRE PRESSURE WARNING CHECK SWITCH CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect BCM harness connector.
3. Check the continuity between BCM harness connector and tire pressure warning check switch connector.





4. Check the continuity between BCM harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Riper or replace error-detected damaged parts.
3.CHECK BCM
Check the BCM input/output signal. Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES - Check the tire pressure warning check switch. Diagnosis Procedure.
NO - Repair or replace the BCM.