Door Courtesy Switch Circuit
LIGHTING (INT): LIGHTING SYSTEM: Door Courtesy Switch Circuit
Door Courtesy Switch Circuit
DESCRIPTION
The main body ECU (driver side junction block assembly) detects the condition of the door courtesy light switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the display on the Techstream.
Main Body
OK:
Normal conditions listed above are displayed.
Result:
D -- INSPECT BACK DOOR LOCK ASSEMBLY
C -- INSPECT COURTESY LIGHT SWITCH (REAR LH SIDE OR REAR RH SIDE)
B -- INSPECT COURTESY LIGHT SWITCH (DRIVER SIDE OR FRONT PASSENGER SIDE)
A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT COURTESY LIGHT SWITCH (DRIVER SIDE OR FRONT PASSENGER SIDE)
(a) Remove the courtesy light switch Front Door Courtesy Switch.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE COURTESY LIGHT SWITCH
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT COURTESY LIGHT SWITCH)
(a) for Driver Side
(1) Disconnect the D50 main body ECU (driver side junction block assembly) connector.
(2) Disconnect the L8 courtesy light switch connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
(b) for Front Passenger Side
(1) Disconnect the D49 main body ECU (driver side junction block assembly) connector.
(2) Disconnect the M8 courtesy light switch connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
4. INSPECT COURTESY LIGHT SWITCH (REAR LH SIDE OR REAR RH SIDE)
(a) Remove the courtesy light switch Components.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPLACE COURTESY LIGHT SWITCH
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR COURTESY LIGHT SWITCH)
(a) for Rear LH Side
(1) Disconnect the 2O main body ECU (driver side junction block assembly) connector.
(2) Disconnect the L9 courtesy light switch connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
(b) for Rear RH Side
(1) Disconnect the D49 main body ECU (driver side junction block assembly) connector.
(2) Disconnect the M9 courtesy light switch connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
w/ Power Back Door
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)
6. INSPECT BACK DOOR LOCK ASSEMBLY
(a) w/o Power Back Door w/o Back Door Closer
(1) Remove the back door lock assembly Components.
(2) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
(b) w/ Power Back Door, w/ Back Door Closer w/o Power Back Door
(1) Remove the back door lock assembly Components.
(2) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NG -- REPLACE BACK DOOR LOCK ASSEMBLY
OK -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK - MAIN BODY ECU)
(a) w/o Power Back Door w/o Back Door Closer
(1) Disconnect the D49 main body ECU (driver side junction block assembly) connector.
(2) Disconnect the R2 back door lock assembly connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
(b) w/ Power Back Door
(1) Disconnect the D49 main body ECU (driver side junction block assembly) connector.
(2) Disconnect the R1 back door lock assembly connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)