Light Control Switch Circuit

LIGHTING: LIGHTING SYSTEM: Light Control Switch Circuit

Light Control Switch Circuit

DESCRIPTION

The combination switch receives the information of the light control switch, and sends it to each ECU via the multiplex communication system.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (COMBINATION SWITCH)
(a) Check the DATA LIST for proper functioning of the combination switch.

Combination Switch (Windshield wiper switch assembly)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.
2. INSPECT FUSE (ECU-IG RH, MPX-B, D/C CUT)
(a) Remove the ECU-IG RH fuse from the main body ECU RH.
(b) Remove the MPX-B and D/C CUT fuses from the engine room No. 1 relay block.
(c) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
3. CHECK WIRE HARNESS (COMBINATION SWITCH - BATTERY AND BODY GROUND)

(a) Disconnect the K22 switch connector.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE