Tire Pressure Warning Light Circuit

TIRE AND WHEEL: 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 (comes on 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 blink the tire pressure warning light and output the DTC.

WIRING DIAGRAM





INSPECTION PROCEDURE
NOTICE:
- When replacing the tire pressure warning ECU, read the IDs stored in the ECU using the intelligent tester and write them down before removal.
- 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 PROBLEM SYMPTOMS TABLE.

PROCEDURE

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





(a) Disconnect the C6 combination meter connector.
(b) Disconnect the T11 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, check if the tire pressure warning light illuminates.
Result:






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