DESCRIPTION The main body
ECU (multiplex network body ECU) receives switch signals from the
luggage compartment door opening switch assembly and operates the
luggage compartment door lock assembly to open the luggage compartment
door. WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- The luggage compartment door opener system uses the CAN communication
system. First, confirm that there is no malfunction in the CAN
communication system. Refer to the How to Proceed with Troubleshooting
procedure.
Click here 
- Before replacing the main body ECU (multiplex network body ECU) or
certification ECU (smart key ECU assembly), refer to Registration.
Click here
PROCEDURE |
1. | CHECK POWER DOOR LOCK CONTROL SYSTEM |
(a) Check power door lock control system operation. Click here
OK: Power door lock control system is normal.
| NG |
 | GO TO POWER DOOR LOCK CONTROL SYSTEM |
|
OK |
 | |
| 2. |
CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Check wireless door lock control system operation. Click here
OK: Wireless door lock control system is normal.
| NG |
| GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
|
OK | |
| |
| 3. |
PERFORM ACTIVE TEST USING TECHSTREAM (Trunk and Back-Door Open) |
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG).
(c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream. Body Electrical > Main Body > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note | |
Trunk and Back-Door Open |
Operate luggage compartment door lock assembly latch release |
OFF or ON | - | Body Electrical > Main Body > Active Test
|
Tester Display | | Trunk and Back-Door Open |
OK: Luggage compartment door lock assembly latch release motor operates normally.
| NG |
| GO TO STEP 9 |
|
OK | |
| |
| 4. |
READ VALUE USING TECHSTREAM (Trunk/BDoor Open SW, Luggage Courtesy SW) |
(a) Enter the following menus: Body Electrical / Main Body / Data List.
(b) Read the Data List according to the display on the Techstream. Body Electrical > Main Body > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
Trunk/BDoor Open SW | Luggage compartment door opening switch signal |
OFF or ON | OFF: Luggage compartment door opening switch off
ON: Luggage compartment door opening switch on |
- | | Luggage Courtesy SW |
Luggage compartment door courtesy light switch signal |
OFF or ON | OFF: Luggage compartment door courtesy light switch off
ON: Luggage compartment door courtesy light switch on |
- | Body Electrical > Main Body > Data List
|
Tester Display | | Trunk/BDoor Open SW | |
Luggage Courtesy SW | OK: The
Techstream display changes correctly in response to the ON/OFF
operation of the luggage compartment door opening switch or luggage
compartment door courtesy light switch. |
Result | Proceed to | |
OK | A | |
NG (Trunk/BDoor Open SW) |
B | | NG (Luggage Courtesy SW) |
C |
| B |
| GO TO STEP 7 |
| C |
| GO TO LIGHTING SYSTEM |
|
A | |
| |
| 5. |
READ VALUE USING TECHSTREAM (Tr/B-Door Unlock SW) |
(a) Enter the following menus: Body Electrical / Smart Key / Data List.
(b) Read the Data List according to the display on the Techstream. Body Electrical > Smart Key > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
Tr/B-Door Unlock SW | Luggage electrical key switch |
OFF or ON | OFF: Luggage electrical key switch not pressed
ON: Luggage electrical key switch pressed |
When this item is abnormal, there is a malfunction in the luggage electrical key switch or related parts. |
OK: The Techstream display changes correctly in response to the operation of the luggage electrical key switch.
| NG |
| GO TO SMART KEY SYSTEM (for Entry Function) |
|
OK | |
| |
| 6. |
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Temporarily replace the main body ECU (multiplex network body ECU) with a new or known good one.
Click here (b) Check that the luggage door opener system is normal.
| OK |
| END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE) |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| 7. |
INSPECT LUGGAGE COMPARTMENT DOOR OPENING SWITCH ASSEMBLY |
(a) Remove the luggage compartment door opening switch assembly. Click here
(b) Inspect the luggage compartment door opening switch assembly.
Click here
| NG |
| REPLACE LUGGAGE COMPARTMENT DOOR OPENING SWITCH ASSEMBLY |
|
OK | |
| |
| 8. |
CHECK
HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) -
LUGGAGE COMPARTMENT DOOR OPENING SWITCH ASSEMBLY AND BODY GROUND) |
(a) Disconnect the G34 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G34-4 (TSW) - G28-5 (B) |
Always | Below 1 Ω | |
G28-2 (L) - Body ground |
Always | Below 1 Ω | |
G34-4 (TSW) or G28-5 (B) - Body ground |
Always | 10 kΩ or higher |
| OK |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 9. |
INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY |
(a) Remove the luggage compartment door lock assembly. Click here
(b) Inspect the luggage compartment door lock assembly.
Click here
| NG |
| REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY |
|
OK | |
| |
| 10. |
CHECK HARNESS AND CONNECTOR (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND) |
(a) Disconnect the 4H instrument panel junction block assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
P3-3 (D+) - 4H-34 | Always |
Below 1 Ω | |
P3-1 (B) - 4H-20 | Always |
Below 1 Ω | |
P3-2 (E) - Body ground |
Always | Below 1 Ω | |
P3-3 (D+) or 4H-34 - Body ground |
Always | 10 kΩ or higher | |
P3-1 (B) or 4H-20 - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 11. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Temporarily replace the instrument panel junction block assembly with a new or known good one.
Click here (b) Check that the luggage door opener system is normal.
| OK |
| END (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WAS DEFECTIVE) |
| NG |
| REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) | | 
