1: Warning Lamp Doesnt Come On When Ignition Switch On

Inspection 1: Warning Lamp Does Not Come On When Ignition Switch Is Turned On


1. CHECK COMBINATION METER
heck combination meter operation.

OK or NG?

OK >> GO T0 2.
NG >> Repair or replace combination meter.

2. CHECK WARNING LAMP







1. Disconnect low tire pressure warning control unit connector M143.
2. Apply ground to low tire pressure warning control unit connector M143 terminal 3 (Y).

Does the warning lamp activate?

YES >> Replace low tire warning control unit.
NO >> GO TO 3.

3. CHECK COMBINATION METER CIRCUIT
1. Disconnect combination meter connector M39.







2. Check continuity between low tire pressure warning control unit connector M143 terminal 3 (Y) and combination meter connector M39 terminal 43 (Y).







OK or NG?


OK >> Check combination meter.
NG >> Check harness for open or short between low tire pressure warning control unit and combination meter.