1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Column cover.
b. Wiper and washer switch.
3. Use a tester to measure and verify that the continuity between the rear wiper and washer switch terminals is as indicated in the table.

If the continuity is not as indicated in the table, replace the wiper and washer switch..

General
Windshield Wiper And Washer Switch InspectionAuto Light Sensor
Purpose
The auto light sensor detects the illumination level above and in front of
the vehicle and outputs it to the front body control module (FBCM).
Function
The auto-light sensor uses the upward illumination level sensor to detect
the illumination level above the vehicle ...
DSC HU/CM Inspection
1. Disconnect the DSC HU/CM connector..
2. Connect the negative battery cable..
3. Attach the tester lead to the DSC HU/CM wiring harness-side connector and
inspect voltage, continuity, or resistance according to the standard (reference)
on the table.
Standard (Reference)
...
Full Auto Air Conditioner [Full Auto Air Conditioner]
Outline
The climate control unit performs the following controls based on the signals
from each switch/dial and the sensor.
Airflow temperature control
Airflow volume control
Airflow mode control
Air intake control
A/C compressor con ...