Interior Light Circuit

LIGHTING: LIGHTING SYSTEM: Interior Light Circuit

Interior Light Circuit

DESCRIPTION

The interior light is controlled by the main body ECU. The operation and condition of this control are described below.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM
(a) Connect Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn Techstream on.
(d) Select the following menu items: Body Electrical / Main Body / Active Test.
(e) Check the operation.

Main Body:





OK:
The interior light illuminates.
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.
2. CHECK VEHICLE CONDITION
(a) Check the vehicle condition.
Result:






B -- CHECK HARNESS AND CONNECTOR (LIGHT - BATTERY AND INSTRUMENT PANEL J/B ASSEMBLY)
A -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (LIGHT - BATTERY AND INSTRUMENT PANEL J/B ASSEMBLY)




(a) Disconnect the Q9 rear room light assembly connector.
(b) Disconnect the IR instrument panel J/B assembly connector.
(c) Measure the voltage and resistance according to the value(s) in the table below.
Standard voltage:






Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
4. CHECK HARNESS AND CONNECTOR (LIGHT - BATTERY AND INSTRUMENT PANEL J/B ASSEMBLY)




(a) Disconnect the Q6 overhead J/B connector.
(b) Disconnect the IR instrument panel J/B assembly connector.
(c) Measure the voltage and resistance according to the value(s) in the table below.
Standard voltage:






Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY