Tire Pressure Warning Light Circuit

TIRE PRESSURE WARNING SYSTEM: Tire Pressure Warning Light Circuit

Tire Pressure Warning Light Circuit

DESCRIPTION

If the ECU detects trouble, the tire pressure warning light blinks (illuminates after blinking for 1 minute) and tire pressure monitor is cancelled at the same time. At this time, the ECU records a DTC in the memory.
Connect terminals TC and CG of DLC3 to make the tire pressure warning light blink and output the DTC.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTE: It is necessary to perform initialization (Initialization) after registration (Registration) of the transmitter IDs into the tire pressure warning ECU, after the ECU has been replaced.

HINT: This procedure must be performed according to the PROBLEM SYMPTOMS TABLE.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (COMBINATION METER - TIRE PRESSURE WARNING ECU)





(a) Disconnect the C8 combination meter connector.
(b) Disconnect the T10 tire pressure warning ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. INSPECT COMBINATION METER





(a) Disconnect the connector from the tire pressure warning ECU.
(b) Turn the ignition switch to the ON position, and check if the tire pressure warning light illuminates.
Result:





B -- REPLACE COMBINATION METER
A -- REPLACE TIRE PRESSURE WARNING ECU