Diagnosis Procedure

LOW TIRE PRESSURE WARNING LAMP


Description






Uses CAN communication from the low tire pressure warning control unit to illuminate the low tire pressure warning lamp on the combination meter.









LOW TIRE PRESSURE WARNING LAMP


Diagnosis Procedure

1.POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit. Refer to Diagnosis Procedure.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace error-detected parts.
2.PERFORM THE SELF-DIAGNOSIS
With CONSULT-III
Perform low tire pressure warning control unit self-diagnosis.
Is DTC "U1000" detected?
YES - Perform trouble diagnosis for CAN communication system. Refer to CAN COMM Circuit.
NO - GO TO 3.
3.CHECK LOW TIRE PRESSURE WARNING LAMP SIGNAL
With CONSULT-III
1. Turn the ignition switch ON.

CAUTION:
Never start engine.
2. Select "DATA MONITOR" mode for "AIR PRESSURE MONITOR" with CONSULT-III.
3. Read out the value of "WARNING LAMP".
Does the data monitor display change from ON to OFF?
YES - GO TO 4.
NO - Replace the low tire pressure warning control unit. Refer to Exploded View.
4.CHECK COMBINATION METER POWER SUPPLY CIRCUIT
Perform trouble diagnosis of the combination meter power supply circuit.
Is the inspection result normal?
YES - INSPECTION END
NO - Repair or replace error-detected parts.