Door Courtesy Switch Circuit

LIGHTING SYSTEM: Door Courtesy Switch Circuit

Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU receives a door open/closed signal from each door courtesy light switch.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (DOOR COURTESY LIGHT SWITCH)
(a) Operate the Techstream according to the display and select the "Data List".

Main Body





Result





E -- INSPECT REAR DOOR COURTESY LIGHT SWITCH RH
D -- INSPECT REAR DOOR COURTESY LIGHT SWITCH LH
C -- INSPECT FRONT DOOR COURTESY LIGHT SWITCH RH
B -- INSPECT FRONT DOOR COURTESY LIGHT SWITCH LH
A -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH LH





(a) Remove the front door courtesy light switch LH (Removal).
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE FRONT DOOR COURTESY LIGHT SWITCH LH
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH LH - MAIN BODY ECU)





(a) Disconnect the P5 switch connector.
(b) Disconnect the J4 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 -- REPLACE MAIN BODY ECU
4. INSPECT FRONT DOOR COURTESY LIGHT SWITCH RH





(a) Remove the front door courtesy light switch RH (Removal).
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE FRONT DOOR COURTESY LIGHT SWITCH RH
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH RH - MAIN BODY ECU)





(a) Disconnect the Q5 switch connector.
(b) Disconnect the J3 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 -- REPLACE MAIN BODY ECU
6. INSPECT REAR DOOR COURTESY LIGHT SWITCH LH





(a) Remove the rear door courtesy light switch LH (Removal).
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE REAR DOOR COURTESY LIGHT SWITCH LH
OK -- Continue to next step.
7. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH LH - MAIN BODY ECU)





(a) Disconnect the P6 switch connector.
(b) Disconnect the DC 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 -- REPLACE MAIN BODY ECU
8. INSPECT REAR DOOR COURTESY LIGHT SWITCH RH





(a) Remove the rear door courtesy light switch RH (Removal).
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





NG -- REPLACE REAR DOOR COURTESY LIGHT SWITCH RH
OK -- Continue to next step.
9. CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH RH - MAIN BODY ECU)





(a) Disconnect the Q6 switch connector.
(b) Disconnect the J3 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 -- REPLACE MAIN BODY ECU