Door Courtesy Switch Circuit

LIGHTING (INT): LIGHTING SYSTEM: Door Courtesy Switch Circuit; 2013 MY FR-S [03/2012 -]
- Door Courtesy Switch Circuit

DESCRIPTION

The main body ECU (network gateway ECU) detects the condition of the front door courtesy light switch assembly using this circuit.

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.

OK:

Normal conditions listed above are displayed.

Main Body





Result:





B -- INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR RH)

A -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Interior Lighting System

2. INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR RH)

(a) Remove the front door courtesy light switch assembly Removal.

(b) Inspect the front door courtesy light switch assembly Testing and Inspection.

OK:

Front door courtesy light switch assembly is normal.

Result:





B -- CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

C -- REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY Removal
A -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 3A instrument panel junction block assembly connector.

(b) Disconnect the H21 front door courtesy light switch assembly LH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the instrument panel junction block assembly Removal.

(b) Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.

(c) Measure the resistance according to the value(s) in the table below.









Standard Resistance:





NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Removal

OK -- REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Removal

5. CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 3B instrument panel junction block assembly connector.

(b) Disconnect the G18 front door courtesy light switch assembly RH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the instrument panel junction block assembly Removal.

(b) Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.

(c) Measure the resistance according to the value(s) in the table below.









Standard Resistance:





NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Removal

OK -- REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Removal