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 (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

NOTICE:
It is necessary to perform initialization Initialization after registration Registration of the transmitter IDs into the tire pressure warning ECU, after the ECU have 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 F1 combination meter connector.





(b) Disconnect the E60 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 on (IG), check the condition of the tire pressure warning light illumination.

Result:





B -- REPLACE COMBINATION METER Removal

A -- REPLACE TIRE PRESSURE WARNING ECU