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 GATEWAY ECU

Disconnect the gateway ECU connector.

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

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
GND - Body ground	Always	Below 1 Ω

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

Standard voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
BATT - GND	Always	10 to 14 V
ACC - GND	Ignition switch on (ACC)	10 to 14 V
IG - GND	Ignition switch on (IG)	10 to 14 V

Fig 1: Disconnecting Gateway ECU Connector

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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