Diagnosis Procedure

TIRE PRESSURE WARNING CHECK SWITCH


Description

Self-diagnosis can be performed by short-circuiting the tire pressure warning check switch to the ground.(Self diagnosis indicates the location of the malfunction by the blinking of the low tire pressure warning lamp on the combination meter.)

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





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





TIRE PRESSURE WARNING CHECK SWITCH


Diagnosis Procedure

1.CHECK TIRE PRESSURE WARNING CHECK SWITCH POWER SUPPLY CIRCUIT
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 - Repair or replace BCM circuit. Replace BCM. Refer to Exploded View.
NO - GO TO 2.
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 - Repair or replace damaged parts.
3.CHECK BCM
Check the BCM input/output signal. Refer to Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES - INSPECTION END
NO - Check the BCM pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts. Replace BCM. Refer to Exploded View.