Test No. 13 - Light Sensor Circuit Problem: Testing

Connect tester to DLC3, located under left side of instrument panel. Turn ignition and tester on. Check output frequency of light sensor. If frequency is 400-1200 Hz, go to next step. If frequency is not 400-1200 Hz, replace light sensor.
Check wiring harness and connectors between Black 4-pin light sensor connector A30 and body No. 2 ECU. See WIRING DIAGRAMS. Repair if necessary. If no problem is found, replace body No. 2 ECU.