Entry Functions Do Not Operate At All

DOOR LOCK: SMART KEY SYSTEM: Entry Functions do not Operate at All
- Entry Functions do not Operate at All

DESCRIPTION

When the entry functions do not operate at all, it is possible that the certification ECU is malfunctioning or that the wire harness leading to the certification ECU is short circuited.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK KEY CANCEL FUNCTION

(a) Check that the key cancel function has been set Door Lock - Smart Key System.

OK:

Key cancel function is set.

NG -- CHECK WIRE HARNESS (CERTIFICATION ECU - BATTERY AND BODY GROUND)

OK -- END (UNSET KEY CANCEL FUNCTION)

2. CHECK WIRE HARNESS (CERTIFICATION ECU - BATTERY AND BODY GROUND)





(a) Disconnect the E84 ECU connector.

(b) Measure the resistance and voltage of the wire harness side connectors.

Standard resistance:





Standard voltage:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR

OK -- REPLACE ECU AGGREGATION BOX (CERTIFICATION ECU)

3. REPLACE ECU AGGREGATION BOX (CERTIFICATION ECU) Removal

4. END (UNSET KEY CANCEL FUNCTION)

5. REPAIR OR REPLACE HARNESS AND CONNECTOR