Low Tire Pressure Indicator: Testing and Inspection

TIRE PRESSURE WARNING LAMP CIRCUIT

CIRCUIT DESCRIPTION
When the tire pressure decreases, the skid control ECU sends the communication signal to the combination meter assembly through the ECM, and it illuminates the tire pressure warning lamp on the combination meter assembly.

The tire pressure warning lamp also comes on when the signal for the tire pressure warning lamp cuts off.

HINT: Refer to the "TIRE PRESSURE WARNING LAMP CHART" section in the "PRE-CHECK" for the tire pressure warning lamp..
Pre-Check

Wiring Diagram:

Step 1 - 3:

INSPECTION PROCEDURE

HINT: Start the inspection from step 1 when using the hand-held tester and start from step 2 when not using the hand-held tester.