DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE USING INTELLIGENT TESTER (BACK DOOR COURTESY SWITCH)
CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH] AND BODY GROUND)
INSPECT BACK DOOR LOCK ASSEMBLY
PARKING ASSIST MONITOR SYSTEM (w/ Side Monitor System) - "Back Door is Open" is Displayed even after Back Door is Closed
DESCRIPTION
The parking assist ECU receives back door lock assembly open/close signals from the main body ECU (cowl side junction block LH) via CAN communication. When the back door is open, the camera aiming cannot be adjusted correctly because the rear television camera assembly is installed on the back door. Therefore, when adjusting the camera aiming calibration while the back door is open, a back door open warning message will be displayed on the screen and camera aiming adjustment will be canceled.
The back door lock assembly is connected to the main body ECU (cowl side junction block LH) by the vehicle wire harness.
WIRING DIAGRAM
INSPECTION PROCEDURE
When "System initializing" is displayed on the parking assist ECU after the battery terminal disconnected, correct the steering angle neutral point ().
Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the parking assist monitor system (w/ Side Monitor System) may be needed ().
| 1.READ VALUE USING INTELLIGENT TESTER (BACK DOOR COURTESY SWITCH) |
Use the Data List to check if the back door courtesy switch is functioning properly ().
Main Body| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| Back Door Courtesy SW | Back door courtesy light switch signal / ON or OFF | ON: Back door open
OFF: Back door closed | - |
- OK:
- The back door courtesy switch functions as specified in the normal condition column.
| OK | |
| |
| REPLACE PARKING ASSIST ECU ()
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| 2.CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH] AND BODY GROUND) |
Disconnect the S1*1 or S22*2 back door lock assembly connector.
*1: w/o Power Back Door System
*2: w/ Power Back Door System
Disconnect the E2 main body ECU (cowl side junction block LH) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
- w/o Power Back Door System:
| Tester Connection | Condition | Specified Condition |
| S1-3 (+) - E2-25 (BCTY) | Always | Below 1 Ω |
| S1-3 (+) - Body ground | Always | 10 kΩ or higher |
| S1-1 (ACT-) - Body ground | Always | Below 1 Ω |
- w/ Power Back Door System:
| Tester Connection | Condition | Specified Condition |
| S22-3 (CTY) - E2-25 (BCTY) | Always | Below 1 Ω |
| S22-3 (CTY) - Body ground | Always | 10 kΩ or higher |
| S22-4 (E) - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.INSPECT BACK DOOR LOCK ASSEMBLY |
Remove the back door lock assembly ().
Inspect the back door lock assembly ().
| | REPLACE BACK DOOR LOCK ASSEMBLY ()
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| OK | |
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| REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) |
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