Inspection Procedure

WARNING: This page is about a different car, the 2009 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - BATTERY, BODY GROUND)

Disconnect the navigation receiver assembly connector.

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

Standard Resistance

RESISTANCE REFERENCE

Tester Connection	Condition	Specified Condition
E1-7 (E) - Body ground	Always	Below 1 Ω

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

Fig 1: Identifying Navigation Receiver Assembly Connector Terminal

Standard Voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
E1-4 (B) - E1-7 (E)	Always	11 to 14 V
E1-3 (ACC) - E1-7 (E)	Ignition switch ACC	11 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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