Inspection 2: Warning Lamp Stays On When Ignition Switch Is Turned On

Inspection 2: Warning Lamp Stays On When Ignition Switch Is Turned On
1. CHECK CONNECTOR
1. Disconnect low tire pressure harness connectors M19.
2. Check terminals for damage or loose connections.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
2. CHECK POWER SUPPLY CIRCUIT (IGN)
1. Turn ignition switch ON.
2. Measure voltage between low tire pressure warning control unit harness connector M19 and ground.








OK or NG
OK >> GO TO 3.
NG >> Check low tire pressure warning control unit power supply circuit for open or short.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.





2. Check continuity between low tire pressure warning control unit harness connector M1 9 and ground.





OK or NG
OK >> Replace low tire pressure warning control unit.
NG >> Repair or replace low tire pressure warning control unit ground circuit.