Impreza Coupe FWD F4-1820cc 1.8L SOHC (1995)
3. Insulation resistance of brush holder
Be sure there is no continuity between brush holder and its plate.
4. Brush spring force
Measure brush spring force with a spring scale. If it is less than the service limit, replace brush spring.
Brush spring force:
Standard: 18.6 N (1.9 kg, 4.2 lb) (when new)
Service limit: 6.9 N (0.7 kg, 1.5 lb)
5. SWITCH ASSEMBLY
Be sure there is continuity between terminals S and M, and between terminal S and ground. Use a circuit tester (set in "Ohm").
Also check to be sure there is no continuity between terminal M and B.
Terminal / Specified resistance:
S - M / 10 Ohm, max.
S - Ground / 10 Ohm max.
M - B / 1 MOhm, min.