Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

When replacing the tire pressure warning ECU and receiver, read the IDs stored in the old ECU using the intelligent tester and write them down before removal.
It is necessary to perform initialization (see INITIALIZATION ) after registration (see REGISTRATION ) of the transmitter IDs into the tire pressure warning ECU and receiver after the ECU has been replaced.

CHECK HARNESS AND CONNECTOR (ECU - DLC3)

Disconnect the T25 ECU connector.

Measure the resistance according to the value(s) in the table below.

Standard resistance

STANDARD RESISTANCE REFERENCE CHART

Tester Connection	Condition	Specified Condition
T25-10 (TC) - D7-13 (TC)	Always	Below 1 Ω
T25-10 (TC) - Body ground	Always	10 kΩ or higher
D7-4 (CG) - Body ground	Always	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 1: Identifying T25 ECU Connector Terminal

OK: REPLACE TIRE PRESSURE WARNING ECU AND RECEIVER (see REPLACEMENT )