Kwikee 888 - Page 12

Rev: 08.04.2017
Page 12
Kwikee® 888 Electric Step Owner's Manual
3. To check the door switch, connect a voltmeter between the red wire from the 4-way connector (vehicle
half) and the brown in the same connector (Fig. 8). The voltage should be a minimum of 12 volts DC
when the door is closed and zero volts when the door is open.
A. If the readings are incorrect, there is a problem with the switch.
B. Check the door switch and the condition of the circuit’s wiring and terminal connections.
4. To check the ignition override system, connect a voltmeter between the yellow wire from the 4-way
connector (vehicle half) and the ground terminal on the end of the control unit’s green ground wire
(Fig. 9).
A. The voltage reading should be approximately 12 volts DC when the ignition is on and zero volts
when ignition is off.
B. If the reading is zero volts when the ignition is on, check all terminal connections, wiring, and the
vehicle’s ignition fuse.
5. For steps equipped with door switch only operation:
A. Connect the white jumper wire from the vehicle half of the 4-way connector and the ground
terminal at the end of the control unit’s green ground wire (Fig. 10).
B. Be sure to use the terminal with only the white wire.
C. The reading should be 12 volts DC. If the voltage reading is more, the white wire is connected to
12 volts and should be cut.