Back Door Courtesy Switch Circuit

DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: Back Door Courtesy Switch Circuit

Back Door Courtesy Switch Circuit

DESCRIPTION

w/o power back door system:
The back door courtesy switch is built into the back door lock assembly. The switch turns on when the back door is opened and turns off when the door is closed. The body ECU applies voltage to the back door lock assembly via terminal BCTY. Back door open/close state signals are input to the body ECU.
w/ power back door system:
The back door courtesy switch is built into the back door lock assembly. The switch turns on when the back door is opened and turns off when the door is closed. The power back ECU applies voltage to the back door lock assembly via terminal CTYE. Back door open/close state signals are input to the power back door ECU. The back door ECU sends the back door open/close state signals to the body ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK VEHICLE TYPE






B -- READ VALUE OF DATA LIST
A -- Continue to next step.
2. INSPECT BACK DOOR LOCK ASSEMBLY
w/o Power Back Door System





(a) Remove the back door lock assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance (Courtesy switch):






NG -- REPLACE BACK DOOR LOCK ASSEMBLY
OK -- Continue to next step.
3. CHECK WIRE HARNESS (BACK DOOR LOCK ASSEMBLY - INSTRUMENT PANEL J/B (BODY ECU))
w/o Power Back Door System





(a) Disconnect the back door lock assembly connector.
(b) Disconnect the instrument panel J/B connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
4. READ VALUE OF DATA LIST
(a) Check the Data List to ensure proper function of the back door courtesy switch.

BACK-DOOR (Power Back Door ECU):





OK:
The display is as specified in the normal condition.
NG -- INSPECT BACK DOOR LOCK ASSEMBLY
OK -- Continue to next step.
5. CHECK WIRE HARNESS (POWER BACK DOOR ECU - INSTRUMENT PANEL J/B)
w/ Power Back Door System





(a) Disconnect the power back door ECU connector.
(b) Disconnect the instrument panel J/B connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
6. INSPECT BACK DOOR LOCK ASSEMBLY
w/ Power Back Door System





(a) Remove the back door lock assembly.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance (Courtesy switch):






NG -- REPLACE BACK DOOR LOCK ASSEMBLY
OK -- Continue to next step.
7. CHECK WIRE HARNESS (BACK DOOR LOCK ASSEMBLY - POWER BACK DOOR ECU)
w/ Power Back Door System





(a) Disconnect the back door lock assembly connector.
(b) Disconnect the power back door ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE