Entry Functions do not Operate at All

DOOR LOCK: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: 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 is set.

OK:

Key cancel function is set.

OK -- END (UNSET KEY CANCEL FUNCTION)
NG -- Continue to next step.

2. INSPECT FUSE (SECURITY, ECU-IG RH)

(a) Remove the SECURITY and ECU-IG RH fuses from the main body ECU RH.

(b) Measure the resistance of the fuse.

Standard resistance:

Below 1 Ohms

NG -- REPLACE FUSE
OK -- Continue to next step.

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





(a) Disconnect the U28 ECU connector.

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

Standard voltage:

Standard resistance










NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE CERTIFICATION ECU