Steering Heater Switch

Measure the resistance between connector terminals.

Preparation tool:

Circuit tester

Fig 1: Identifying Steering Heater Switch Connector Terminals

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

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

Terminal No.	Inspection conditions	Specification
2 (+) - 1 (-)	Apply battery voltage.	Illumination (mark) turns on.
5 (+) - 3 (-)	Apply battery voltage.	Indicator turns on.
2 (+) - 1 (-) 5 (+) - 3 (-)	Apply battery voltage simultaneously.	Illumination (mark) and indicator turn on in dimmed condition at one level.

Replace the steering heater switch if the inspection result is not within the standard value.