Inspection Procedure

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

CHECK MULTIPLEX COMMUNICATION SYSTEM
Refer to HOW TO PROCEED WITH TROUBLESHOOTING .

If the multiplex communication system is operating normally, proceed to the next step

PERFORM ACTIVE TEST USING TECHSTREAM

Connect the Techstream to the DLC3
Turn the engine switch on (IG).
Turn the Techstream on
Enter the following menus: Body Electrical / Combination Meter / Active Test

Check the operation

Combination Meter

ACTIVE TEST - COMBINATION METER

Tester Display	Test Part	Control Range	Diagnostic Note
Indicate AFS	AFS ON/OFF indicator light	ON/OFF	-

OK: AFS ON/OFF indicator comes on.

NG: GO TO COMBINATION METER SYSTEM (See PROBLEM SYMPTOMS TABLE )

OK: Go to next Step

READ VALUE USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Turn the clearance sonar main switch on
Enter the following menus. Body Electrical / AFS / Data List.

Read the display on the Techstream

AFS (AFS ECU)

DATA LIST - AFS (AFS ECU)

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
AFS OFF Switch	AFS setting / ON or OFF	ON AFS ON OFF AFS OFF	-

OK: Normal conditions listed above are displayed.

NG: Go to step 4

OK: REPLACE AFS ECU (See AFS ECU )

CHECK SATELLITE SWITCH
1. By using the satellite switch (RH switch, ON/OFF switch, LH switch), check the AFS ON/OFF indicator comes on (See SYSTEM DESCRIPTION )
  OK: AFS ON/OFF indicator comes on.
NG: GO TO COMBINATION METER SYSTEM (See PROBLEM SYMPTOMS TABLE )

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