Door Courtesy Light Circuit

LIGHTING (INT): LIGHTING SYSTEM: Door Courtesy Light Circuit
- Door Courtesy Light Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) receives the door courtesy light switch signal to control the courtesy light.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK OPERATION

(a) Check the operation of each courtesy light.

Result:

B -- CHECK HARNESS AND CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

C -- CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

D -- CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

(a) Disconnect the F12 main body ECU (multiplex network body ECU) connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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

3. CHECK HARNESS AND CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

(a) Disconnect the 2D instrument panel junction block assembly connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

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.

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

Standard Resistance:

NG -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

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

5. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

(a) Disconnect the F12 main body ECU (multiplex network body ECU) connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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

6. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))

(a) Disconnect the F14 main body ECU (multiplex network body ECU) connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Text in Illustration

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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