Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment

DOOR LOCK: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment
- Luggage Compartment Door Entry Unlock Function does not Operate when Key is Outside Luggage Compartment

DESCRIPTION

When the power luggage door open switch is turned ON, the certification ECU uses the luggage electrical key antenna (outer) and antenna to output a request signal to the outside of the vehicle for a distance of approximately 1.0 m (3.3 ft) from the luggage compartment door. A key near the luggage compartment door detects this request and transmits its ID code. The entry door control receiver receives the ID code and sends this ID code to the certification ECU. The certification ECU checks if the ID code is valid. When the ID code is valid, the certification ECU sends a luggage compartment door open signal to the cowl side junction block LH (drive side junction block ECU) using the multiplex communication line and stops outputting request signals. The luggage room junction block then unlocks the luggage compartment door.

WIRING DIAGRAM







PROCEDURE

1. CHECK LUGGAGE DOOR OPENING SWITCH ASSEMBLY





(a) Turn the luggage door opening switch OFF and check that the entry luggage compartment door opener function operates normally.

OK:

Entry luggage compartment door opener function operates normally.

OK -- END
NG -- Continue to next step.

2. CHECK MANUAL LUGGAGE COMPARTMENT DOOR OPENER OPERATION

(a) Check that the manual luggage compartment door opener function operates normally.

OK:

Manual luggage compartment door opener function operates normally.

NG -- GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM
OK -- Continue to next step.

3. CHECK WIRELESS LUGGAGE COMPARTMENT DOOR OPENER OPERATION

(a) Check that the wireless luggage compartment door opener function operates normally.

OK:

Wireless luggage compartment door opener function operates normally

NG -- GO TO WIRELESS DOOR LOCK CONTROL FUNCTION
OK -- Continue to next step.

4. CHECK OPERATION OF KEY

(a) After replacing the key with a normally functioning one, check that the wireless luggage compartment door opener function operates normally.

OK:

Wireless luggage compartment door opener function operates normally.

OK -- END (KEY IS DEFECTIVE)
NG -- Continue to next step.

5. PERFORM ACTIVE TEST USING TECHSTREAM (LUGGAGE ELECTRICAL KEY ANTENNA (OUTER))

(a) Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the antenna (outer) operates.

Certification ECU:





OK:

When key is brought close to luggage compartment door, antenna (outer) is turned OFF and indicator on key illuminates.

NG -- CHECK WIRE HARNESS (ECU - ANTENNA)
OK -- Continue to next step.

6. READ VALUE USING TECHSTREAM (LUGGAGE COMPARTMENT DOOR LOCK SWITCH)

(a) Check the DATA LIST for proper functioning of the door lock switch.

Multiplex Network Rear ECU





OK:

ON (luggage compartment door lock is pushed) appears on the screen.

NG -- REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY
OK -- Continue to next step.

7. CHECK OPERATION OF CERTIFICATION ECU ASSEMBLY

(a) After replacing the certification ECU assembly with a normal one, check that the entry luggage compartment door lock functions operates normally.

OK:

Entry luggage compartment door lock function operates normally.

NG -- REPLACE COWL SIDE JUNCTION BLOCK LH (COWL SIDE JUNCTION BLOCK ECU LH)

OK -- END (CERTIFICATION ECU ASSEMBLY IS DEFECTIVE)

8. CHECK WIRE HARNESS (ECU - ANTENNA)





(a) Disconnect the U28 ECU connector.

(b) Disconnect the U32 antenna connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





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

9. CHECK INDOOR ELECTRICAL KEY ANTENNA

(a) Carry the key into the vehicle.

(b) Replace the indoor electrical key antenna with a new one.

(c) Depress the brake pedal and check that the engine switch indicator illuminates in green.

OK:

Engine switch indicator illuminates in green.

OK -- END (INDOOR ELECTRICAL KEY ANTENNA IS DEFECTIVE)

NG -- REPLACE CERTIFICATION ECU ASSEMBLY