Section 584 (Engine Immobilizer System): Inspection

WARNING: This page is about a different car, the 2003 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.

INSPECTION TRANSPONDER KEY COIL CONTINUITY
Check that there is continuity between terminal 1 and 2. If continuity is not as specified, replace the coil.

Fig 1: Inspecting Transponder Key Coil Continuity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT TRANSPONDER KEY ECU CIRCUIT

Connect the wire harness side connector to the ECU and inspect wire harness side connector from the back side, as shown in the table.

SPECIFIED CONDITION

Condition	Tester Connection	Specified Condition
Constant	6 - 12	Battery Voltage

If circuit is as specified, try replacing the ECU with a new one.

If the circuit is not as specified, inspect the circuit connected to other parts.

Fig 2: Identifying Transponder Key ECU Terminals