Steering Heater Switch

Measure the resistance between connector terminals.

Preparation tool:

Circuit tester

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.	Inspection conditions	Standard
4 - 5	Operate the switch and hold it.	Less than 1 Ω
4 - 5	Do not operate the switch.	1 MΩ or more
2 - 6	Always	Less than 1 Ω

Apply battery voltage between the connector terminals to check lighting condition of illumination and indicator inside the switch.

CAUTION: When applying battery voltage, do not mix up the positive (+) side and the negative (-) side.
Incorrect polarity connection may cause LED damage inside the switch.

Terminal No.	Inspection conditions	Specification
3 (+) - 1 (-)	Apply battery voltage	Illumination (mark) turns on.
4 (+) - 7 (-)	Apply battery voltage	Indicator turns on.
3 (+) - 1 (-) 4 (+) - 7 (-)	Apply battery voltage simultaneously.	Illumination (mark) and indicator turn on in dimmed condition at one level.

Replace the steering heater switch if it is found defective.