Check power in harness

Ignition "OFF".
Disconnect Stop Lamp Switch harness connector.
Ignition "ON".
Measure Voltage between Power terminal of Stop Lamp Switch harness connector and chassis ground.
Specification: B +.
Is the measured Voltage within specifications?
YES
- Go to Next procedure.
NO
- Check for open and short to ground in harness.
- Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.