Up to 08/2009

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): Room Oscillator does not Recognize Key
- Room Oscillator does not Recognize Key

DESCRIPTION

If the room oscillator does not recognize a key, one of the following may be the cause: 1) communication between the indoor electrical key oscillator (for front floor) and key cannot be performed; 2) communication between the indoor electrical key oscillator (for center floor) and key cannot be performed; or 3) communication between the indoor electrical key oscillator (for rear floor) and key cannot be performed.

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:
* The smart access system with push-button start (for entry function) uses a multiplex communication system (LIN communication system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting How To Proceed With Troubleshooting. Troubleshoot the smart access system with push-button start (for entry function) after confirming that the communication system is functioning properly.
* When using the Techstream with the power switch off to troubleshoot: Connect the Techstream to the DLC3, and turn a courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.
PROCEDURE

1. CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function)

(a) Check that entry lock and unlock functions can be operated at each door Operation Check.

OK:

Entry lock and unlock functions operate normally.

NG -- GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) (Proceed to Problem Symptoms Table) Problem Symptoms Table
OK -- Continue to next step.

2. CHECK SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function)

(a) Remove the battery of the key Service and Repair.

(b) With the brake pedal depressed, touch the power switch while facing the logo side of the key to the power switch.

(c) When operating the power switch, check whether the power source mode changes.

OK:

Power source mode changes.

HINT
* When the key cannot be verified even though it is within the specified range, the hybrid vehicle control system start check can be performed by removing the transmitter battery from the key and holding the transmitter close to the power switch.
* When performing the check, if the power source mode changes, there is a problem with key certification inside the cabin.
NG -- GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function) (Proceed to Power Source Mode does not Change to ON)
OK -- Continue to next step.

3. CHECK WAVE ENVIRONMENT

(a) Install the battery to the key Service and Repair.

(b) Bring the key near the indoor electrical key oscillator (for front floor), and check that the hybrid vehicle control system can be started.

NOTICE:
If the key is brought within 0.2 m (0.656 ft.) of the indoor electrical key oscillator (for front floor), communication is not possible.

(c) Bring the key near the indoor electrical key oscillator (for center floor), and check that the hybrid vehicle control system can be started.

NOTICE:
If the key is brought within 0.2 m (0.656 ft.) of the indoor electrical key oscillator (for center floor), communication is not possible.

(d) Bring the key near the indoor electrical key oscillator (for rear floor), and check that the hybrid vehicle control system can be started*.

*: If the customize setting for Ignition Available Area is not set All, the hybrid vehicle control system will not start. Before performing this inspection, check that All has been selected Smart Access System With Push-Button Start (for Entry Function).

NOTICE:
If the key is brought within 0.2 m (0.656 ft.) of the indoor electrical key oscillator (for rear floor), communication is not possible.

HINT
* When the key is brought near the indoor electrical key oscillator, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
* If the operation 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.

OK:

The hybrid vehicle control system starts.

NG -- PERFORM KEY DIAGNOSTIC MODE INSPECTION

OK -- AFFECTED BY WAVE INTERFERENCE

4. PERFORM KEY DIAGNOSTIC MODE INSPECTION

(a) Diagnostic mode inspection (indoor electrical key oscillator (for front floor))

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Smart Access / Utility / Key Communication Check / Overhead + Front Room.

(5) When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

HINT
* Place the key on the driver or front passenger seat cushion.
* If the buzzer sounds, it can be determined that the indoor electrical key oscillators are operating normally.
(b) Diagnostic mode inspection (indoor electrical key oscillator (for center floor))

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Smart Access / Utility / Key Communication Check / Overhead + Rear Room.

(5) When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

HINT
* Place the key on the rear seat cushion.
* If the buzzer sounds, it can be determined that the indoor electrical key oscillators are operating normally.
(c) Diagnostic mode inspection (indoor electrical key oscillator (for rear floor))

(1) Connect the Techstream to the DLC3.

(2) Turn the power switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Smart Access / Utility / Key Communication Check / Overhead + Back Door (inside).

(5) When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

HINT
* Place the key on the luggage area.
* If the buzzer sounds, it can be determined that the indoor electrical key oscillators are operating normally.

Result:

D -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

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

B -- CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - INDOOR ELECTRICAL KEY OSCILLATOR)
A -- Continue to next step.

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

(a) Disconnect the certification ECU (smart key ECU assembly) connector.

(b) Disconnect the indoor electrical key oscillator (for front floor) connector.

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (for Front Floor (INPUT))

(a) Reconnect the certification ECU (smart key ECU assembly) connector.

(b) Check for pulses according to the value(s) in the table below.

Standard:

Text in Illustration

NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal
OK -- Continue to next step.

7. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (for Front Floor)

(a) Replace the indoor electrical key oscillator (for front floor Removal.

NEXT -- Continue to next step.

8. PERFORM KEY DIAGNOSTIC MODE INSPECTION (for Front Floor)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Access / Utility / Key Communication Check / Overhead + Front Room.

(e) When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

OK:

Wireless door lock buzzer sounds.

HINT
* Place the key on the driver or front passenger seat cushion.
* If the buzzer sounds, it can be determined that the indoor electrical key oscillators are operating normally.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

OK -- END (INDOOR ELECTRICAL KEY OSCILLATOR WAS DEFECTIVE)

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

(a) Disconnect the certification ECU (smart key ECU assembly) connector.

(b) Disconnect the indoor electrical key oscillator (for center floor) connector.

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

10. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (for Center Floor (INPUT))

(a) Reconnect the certification ECU (smart key ECU assembly) connector.

(b) Check for pulses according to the value(s) in the table below.

Standard:

Text in Illustration

NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal
OK -- Continue to next step.

11. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (for Center Floor)

(a) Replace the indoor electrical key oscillator (for center floor) Removal.

NEXT -- Continue to next step.

12. PERFORM KEY DIAGNOSTIC MODE INSPECTION (for Center Floor)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Access / Utility / Key Communication Check / Overhead + Rear Room.

(e) When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.

OK:

Wireless door lock buzzer sounds.

HINT
* Place the key on the driver or front passenger seat cushion.
* If the buzzer sounds, it can be determined that the indoor electrical key oscillators are operating normally.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

OK -- END (INDOOR ELECTRICAL KEY OSCILLATOR WAS DEFECTIVE)

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

(a) Disconnect the certification ECU (smart key ECU assembly) connector.

(b) Disconnect the indoor electrical key oscillator (for rear floor) connector.

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

14. INSPECT INDOOR ELECTRICAL KEY OSCILLATOR (for Rear Floor (INPUT))

(a) Reconnect the certification ECU (smart key ECU assembly) connector.

(b) Check for pulses according to the value(s) in the table below.

Standard:

Text in Illustration

NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal
OK -- Continue to next step.

15. REPLACE INDOOR ELECTRICAL KEY OSCILLATOR (for Rear Floor)

(a) Replace the indoor electrical key oscillator (for rear floor) Removal.

NEXT -- Continue to next step.

16. PERFORM KEY DIAGNOSTIC MODE INSPECTION (for Rear Floor)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Access / Utility / Key Communication Check / Overhead + Back Door (inside).

(e) When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.