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GB120 Key Switch Continuity Testing

This guide explains how to perform continuity testing on the key switch used in the Golden Technologies BuzzAround Carry-On GB120 mobility scooter. Key switch continuity testing can help identify worn contacts, internal switch failures, broken wiring, or open circuits that may prevent the scooter from powering on properly.

The key switch is responsible for supplying power to the scooter's electrical system when turned to the ON position. If the switch fails to complete the circuit, the scooter may display no signs of power even when the battery pack is fully charged.

Tools Required

  • Digital Multi-Meter
  • Phillips Screwdriver
  • 3mm Allen Wrench

Before You Begin

  • Turn the scooter off.
  • Remove the battery pack.
  • Access the dash assembly and key switch.
  • Disconnect the key switch connector if required.
  • Never perform continuity testing on a powered circuit.
  • Set the multi-meter to Continuity Mode or Resistance (Ω).

Expected Test Results

  • Key ON Position: Continuity should be present across the switch terminals.
  • Key OFF Position: Continuity should not be present.
  • Infinite Resistance (OL): May indicate an open circuit or failed switch.

Key Switch Continuity Testing Procedure

  1. Step 1: Remove the battery pack from the scooter.
  2. Step 2: Access the key switch by removing the necessary dash components.
  3. Step 3: Disconnect the key switch connector from the wiring harness.
  4. Step 4: Set the digital multi-meter to continuity mode or the lowest resistance setting.
  5. Step 5: Place one meter lead on each key switch terminal.
  6. Step 6: Turn the key switch to the OFF position and observe the meter reading.
  7. Step 7: Turn the key switch to the ON position and observe the meter reading.
  8. Step 8: Verify continuity is present only when the switch is in the ON position.
  9. Step 9: Repeat the test several times to confirm consistent operation.

Interpreting Test Results

Continuity Present in ON Position Only

The key switch is likely functioning properly and supplying power when activated.

No Continuity in ON Position

A lack of continuity with the switch turned on may indicate:

  • Failed key switch contacts
  • Internal switch damage
  • Broken switch terminals
  • Damaged switch wiring

Continuity Present in Both Positions

If continuity remains present in both the ON and OFF positions, the switch may be internally shorted and require replacement.

Intermittent Continuity

If continuity appears and disappears while operating the key switch, worn internal contacts may be preventing reliable operation.

Potential Replacement Parts

If key switch continuity testing identifies a fault, the following components may require inspection or replacement:

View All GB120 Replacement Parts

Related Multi-Meter Testing Resources

Technical Accuracy Notice

This procedure is based on electrical continuity testing principles and power circuit diagnostics referenced throughout the Golden Technologies BuzzAround Carry-On GB120 Service Guide. Always verify connector locations, switch specifications, and test points against the latest manufacturer documentation before performing electrical diagnostics.