Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START
1. Check that the entry luggage compartment open function operates (see OPERATION CHECK )
NG: GO TO DTC OF OTHER COMPONENTS (See LUGGAGE COMPARTMENT DOOR ENTRY UNLOCK FUNCTION DOES NOT OPERATE WHEN KEY IS OUTSIDE LUGGAGE COMPARTMENT )

OK: Go to next Step
CHECK WAVE ENVIRONMENT
1. Bring the electrical key transmitter near the indoor electrical key oscillator (for luggage compartment), and check that the entry luggage compartment lock-in prevention function operates
  NOTE: If the key is brought within 0.2 m (0.656 ft.) of the indoor electrical key oscillator, communication is not possible.
  
  HINT:
  - When the electrical key transmitter is brought near the indoor electrical key oscillator (for luggage compartment), the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
  - If the inspection result is that the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check
NG: Go to step 3

OK: AFFECTED BY WAVE INTERFERENCE
KEY DIAGNOSTIC MODE
1. Diagnostic mode inspection indoor electrical key oscillator (for luggage compartment)
  1. Connect the intelligent tester or Techstream to the DLC3
  2. Turn the power switch ON (IG)
  3. Turn the tester on
  4. Enter the following menus
    1. Intelligent tester - Select. DIAGNOSIS / OBD/ MOBD / SMART ACCESS / ID UTILITY / SMART DIAGMODE / LUGG + OVERHEAD
    2. Techstream - Select Body Electrical / Smart Access / Smart Communication Check / Overhead + Luggage
  5. When the electrical key transmitter is held at the same height as the rear bumper upper surface and aligned with the center of the rear of the vehicle, check that the wireless door lock buzzer sounds
    
    Fig 1: Identifying Key Lock-In Prevention's Detection Area
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    HINT:
    
    If the buzzer sounds, it can be determined that the luggage compartment interior transmitter is operating normally
    
    OK: Wireless door lock buzzer sounds
NG: Go to step 4

OK: REPLACE CERTIFICATION ECU (See REMOVAL )

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - INDOOR ELECTRICAL KEY OSCILLATOR)

Fig 2: Identifying S44 Oscillator Connector Terminals And L15 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the L15 ECU connector
Disconnect the S44 oscillator connector

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
L15-15 (CLG7) - S44-1 (CLG6)	Always	Below 1 Ω
L15-16 (CG7B) - S44-3 (CLGB)	Always	Below 1 Ω
S44-1 (CLG6) - Body ground	Always	10 kΩ or higher
S44-3 (CLGB) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next Step

CHECK INDOOR ELECTRICAL KEY OSCILLATOR (OPERATION)
1. Replace the indoor electrical key oscillator with a new one or normally functioning one (see REMOVAL )
2. Check that the entry function operates normally (see OPERATION CHECK )
  OK: Operates normally
NG: REPLACE CERTIFICATION ECU (See REMOVAL )

OK: END (INDOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)