Room Oscillator Circuit

DOOR LOCK: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: Room Oscillator Circuit

Room Oscillator Circuit

DESCRIPTION

The certification ECU activates the electrical key oscillators (console and rear seat). The power is supplied from the certification ECU to both the electrical key oscillators (console and rear seat). The electrical key oscillators (console and rear seat) circuits have the same wiring. If the smart access system with push-button start does not operate properly inside the vehicle, check both the electrical key oscillators (console and rear seat) circuits.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

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




(a) Disconnect the E13 ECU connector.
(b) Disconnect the oscillator connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
Console





Rear Seat





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
2. CHECK AND REPLACE ELECTRICAL KEY OSCILLATOR
(a) Replace the electrical key oscillator.
(b) Check that the entry LOCK/UNLOCK function operates normally.
OK:
Entry LOCK/UNLOCK function operates normally.
OK -- END (ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
NG -- Continue to next step.
3. PERFORM ACTIVE TEST USING TECHSTREAM (CERTIFICATION ECU OUTPUT SIGNAL)
(a) Reconnect the oscillator and the ECU connectors.
(b) Connect Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) Turn the tester on.
(e) Enter the following menus: Body Electrical / Smart Access / Active Test.
(f) Perform the Active Test according to the display on the tester.

Smart Access:








(g) Measure the frequency according to the value(s) in the table below.
Standard:
Console





Rear Seat





NG -- REPLACE CERTIFICATION ECU
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE