Key Luggage Compartment Lock-In Prevention Function Does Not Operate: Procedure

Fig 1: Identifying Luggage Door Opening Switch

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. 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: Go to next step 

1. Check that the manual luggage compartment door operates function operates normally.

   OK

   Manual luggage compartment door opener function operates normally.

NG → GO TO LUGGAGE COMPARTMENT DOOR OPENER SYSTEM 

OK: Go to next step 

1. Check the DATA LIST for proper functioning of the each door courtesy switches.
   Multiplex Network Body ECU RH
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   D Door Courtesy SW	Courtesy switch / ON or OFF	ON: Courtesy switch is pushed OFF: Courtesy switch is not pushed	-
   P Door Courtesy SW	Courtesy switch / ON or OFF	ON: Courtesy switch is pushed OFF: Courtesy switch is not pushed	-
   Rr Door Courtesy SW	Courtesy switch / ON or OFF	ON: Courtesy switch is pushed OFF: Courtesy switch is not pushed	-

   MULTIPLEX NETWORK BODY ECU LH
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Luggage Courtesy SW	Luggage compartment door switch / ON or OFF	ON: Courtesy switch is pushed OFF: Courtesy switch is not pushed	-

   OK

   ON (door courtesy switch is pushed) appears on the screen.

NG → GO TO LIGHTING SYSTEM 

OK: Go to next step 

1. Check the DATA LIST for proper functioning of the door lock position switch.
   Multiplex Network Master Switch Aassembly:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Door Unlock Detection Switch	Door unlock detection switch signal / ON or OFF	ON: Door is unlocked OFF: Door is locked	-

   MULTIPLEX NETWORK DOOR ECU FRONT RH:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Door Unlock Detection Switch	Door unlock detection switch signal / ON or OFF	ON: Door is unlocked OFF: Door is locked	-

   MULTIPLEX NETWORK DOOR ECU REAR LH:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Door Unlock Detection Switch	Door unlock detection switch signal / ON or OFF	ON: Door is unlocked OFF: Door is locked	-

   MULTIPLEX NETWORK DOOR ECU REAR RH:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Door Unlock Detection Switch	Door unlock detection switch signal / ON or OFF	ON: Door is unlocked OFF: Door is locked	-

   OK

   ON (Door is unlocked) appears on the screen.

NG → GO TO POWER DOOR LOCK CONTROL SYSTEM 

OK: Go to next step 

1. Select the ACTIVE TEST, use the Techstream to generate a control command, and then check that the antenna (inner) operates.
   CERTIFICATION ECU:
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Inside Trunk/Backdoor Transmitter	Luggage compartment door inner antenna	ON/OFF	-

   OK

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

NG → See step   11 

OK: Go to next step 

Fig 2: Identifying Terminals Of U36 Receiver Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the U36 receiver connector.
2. Measure the voltage and resistance of the wire harness side connectors.

   Standard voltage

   Tester Connection	Specified Condition
   U36-2 (+5) - Body ground	5 V

   Standard resistance

   Tester Connection	Specified Condition
   U36-6 (GND) - Body ground	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

Fig 3: Identifying Entry Door Control Receiver Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the U36 receiver connector.
2. Disconnect the U28 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   U36-3 (DATA) - U28-38 (RDA)	Below 1 Ω
   U36-5 (RSSI) - U28-39 (RSSI)	Below 1 Ω
   U36-4 (ASEL) - U28-37 (ASEL)	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

Fig 4: Checking Door Control Receiver

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Measure the frequency of the receiver connector.

   Standard frequency

   Tester Connection	Condition	Specified Condition
   7 (ANT) - 6 (GND)	Key is placed near center of luggage compartment and luggage compartment door is closed	Above 0 Hz

NG → REPLACE ENTRY DOOR CONTROL RECEIVER 

OK: Go to next step 

Fig 5: Identifying Entry Door Control Receiver Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the V33 connector.
2. Measure the voltage and resistance of the wire harness side connectors.

   Standard voltage

   Tester Connection	Specified Condition
   V33-3 (CLGB) - Body ground	10 to 14 V

   Standard resistance

   Tester Connection	Specified Condition
   V33-1 (CLG6) - Body ground	Below 1 Ω

NG → See step   12 

OK: Go to next step 

1. Check the DATA LIST for proper functioning of the power luggage door open switch.
   COWL SIDE JUNCTION BLOCK ECU LH:
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Luggage Push Switch	Power luggage door open switch / ON or OFF	ON: Power luggage door open switch is pushed OFF: Power luggage door open switch is not pushed	-

   OK

   ON (power luggage door open switch is pushed) appears on the screen.

NG → REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY 

OK: Go to next step 

1. After replacing the certification ECU assembly with a normal one, check that the key luggage lock-in prevention function operates normally.

   OK

   Key luggage lock-in prevention function operates normally.

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

OK → END (CERTIFICATION ECU ASSEMBLY IS DEFECTIVE) 

Fig 6: Identifying Antenna V33 Connector & ECU U23 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the V33 antenna connector.
2. Disconnect the U28 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance

   Tester Connection	Specified Condition
   V33-1 (CLG6) - U28-15 (CLG7)	Below 1 Ω
   V33-1 (CLG6) or U28-15 (CLG7) - Body ground	10 kΩ or higher
   V33-3 (CLGB) - U28-16 (CG7B)	Below 1 Ω
   V33-3 (CLGB) or U28-16 (CG7B) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go to next step 

1. After replacing the luggage electrical key antenna (inner) with a normal one, check that the key luggage lock-in prevention function operates normally.

   OK

   Key luggage lock-in prevention function operates normally.

NG → REPLACE CERTIFICATION ECU ASSEMBLY 

OK → END (LUGGAGE ELECTRICAL KEY ANTENNA (INNER) IS DEFECTIVE)