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.

READ VALUE OF TECHSTREAM

Connect the Techstream to the DLC3.
Turn the ignition switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Body No. 5 / Data List.

Read the display on the Techstream.

Body No. 5 (Front Controller)

DATA LIST - BODY NO 5 (FRONT CONTROLLER)

Tester Display	Measurement Item/Range	Normal Condition
Alt L Signal	Alternator L terminal signal / ON or OFF	ON: Engine start OFF: Except engine start

OK:

Normal conditions listed above are displayed.

NG: Go to step 2

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

INSPECT GENERATOR ASSEMBLY
1. Inspect generator assembly (See INSPECTION ).
  OK:
  
  Generator assembly is normal.
NG: CHECK AND REPLACE GENERATOR ASSEMBLY

OK: Go to next step

CHECK HARNESS AND CONNECTOR (GENERATOR - FRONT CONTROLLER)

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

Fig 1: Identifying Front Controller Connector Terminals

Standard voltage

VOLTAGE SPECIFICATION

Tester Connection	Condition	Specified Condition
1H-6 - Body ground	Engine running	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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