Measure the resistance of stop light switch terminals.
Courtesy of SUBARU OF AMERICA, INC. STOP LIGHT SWITCH REFERENCE
| Pedal |
Terminal No. |
Standard value |
| Released |
1 and 4 |
Less than 1 Ω |
| 2 and 3 |
1 MΩ or more |
| Depressed |
1 and 4 |
1 MΩ or more |
| 2 and 3 |
Less than 1 Ω |