Diagnosis Procedure

Perform the trouble diagnosis for power supply and ground circuit. Refer to DIAGNOSIS PROCEDURE .

Is the inspection result normal?

YES 

GO TO STEP 2  .

NO 

Repair or replace error-detected parts.

With CONSULT 

1. Drive for several minutes at a speed of 40 km/h (25 MPH) or more.
2. Stop the vehicle.
3. Perform self-diagnosis for "AIR PRESSURE MONITOR".

Is any DTC detected?

YES 

Perform trouble diagnosis for detected DTC. Refer to DTC INDEX .

NO 

GO TO STEP 3  .

With CONSULT 

1. Turn the ignition switch ON.
   CAUTION:

   Never start engine.

2. Select "DATA MONITOR" for "AIR PRESSURE MONITOR" with CONSULT.
3. Read out the value of "WARNING LAMP". For low tire pressure warning lamp condition, refer to "LOW TIRE PRESSURE WARNING LAMP CONTROL CONDITION" in SYSTEM DESCRIPTION .

Does the data monitor display change normal?

YES 

GO TO STEP 4. 

NO 

Replace the low tire pressure warning control unit. Refer to REMOVAL AND INSTALLATION .

Perform the trouble diagnosis for combination meter power supply circuit. Refer to DIAGNOSIS PROCEDURE .

Is the inspection result normal?

YES 

INSPECTION END

NO 

Repair or replace error-detected parts.