Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT TRANSPONDER KEY ECU ASSEMBLY

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

Voltage

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
D33-1 (+B) - D33-16 (GND)	Always	10 to 14 V
D33-2 (IG) - D33-16 (GND)	Ignition switch OFF	Below 1 V
D33-2 (IG) - D33-16 (GND)	Ignition switch ON	10 to 14 V

Fig 1: Identifying D33 Connector Terminals

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NG: Go to step 2

OK : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)

Disconnect the D33 ECU connector.

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

Resistance

TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
D33-16 (GND) - Body ground	Always	Below 1 Ω

Fig 2: Disconnecting D33 ECU Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK : REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)