InPower LLC
8311 Green Meadows Drive
Lewis Center, Ohio 43035
740-548-0965
www.InPowerLLC.com
© Copyright 2014 InPower LLC
ITM150 Owners Manual
Page
7 of 8
Document: OM-175
Version Code: B
Date: Feb. 28, 2014
Date: May 27, 2014
6. Interlock System Operation
The interlock system is powered when the Ignition Switch is on. The following is the interlock system sequence
of operation:
Step 1 - Ignition switch on and engine running.
Step 2 - Press service brake and place shifter in Park.
Step 3 - Set parking brake.
• Shift Lock will activate
Step 4 - Open lift door.
• Lift Enable will activate allowing operation of platform lift.
Step 5 - The platform lift may now be operated (Refer to the platform lift operating instructions).
Note: During the Lift Enable sequence, if the parking brake is released the Lift Enable
will be deactivated, preventing lift operation.
Step 6 - When the lift cycle is completed, return the lift to its fully stowed position.
Step 7 - Close the lift door.
Step 8 - Release parking brake. When released, the shift lock will be automatically released.
Step 9 - The cycle is now complete and the vehicle can be taken out of Park and driven.
7. System Troubleshooting
If there is a problem with system operation, there is a very high probability that either the control module lost its
ground or +12 volt power source, or that one or more of its inputs are not being activated by the remote switches
(e.g., Lift Door Switch). Most troubles are related to wiring problems, or switches either failing or becoming out
of adjustment.
Troubleshooting Procedure:
Step 1:
Determine if the control module is powered. If the LEDs on the controle module are illuminated, you
have power. If none are illuminated, check that all connectors are firmly in place and the shifter sensor is
properly positioned. Also ensure that the 10 pin connector is properly connected to the shifter and that the 7.5
amp fuse F16 in the Power Distribution Center is functioning.
Step 2:
If the connectors and fuses are all correct, first reset the interlock system by turning off its power. Then,
step through the operating sequence described in Section 6. Pay particular attention to the diagnostic LEDs on
the module. Verify that the LEDs agree with the switch position. If they do not, check the corresponding wiring
and the sensor position.
The ITM150 module contains six diagnostic LED indicators to aid in system troubleshooting. These show the
status of input and output signals of the control module.
System Diagnostic LED Indicators (Located on the controle module)
POWER
◙ (Red) On when +12 volt power is applied to module. The LED will go out if the EN
ABLE output current exceeds 2 amps
PK BRK
◙ (Red) On when the park brake is set.
PARK
◙ (Red) On when the transmission is in the Park position
ENABL
◙ (Red) On when the interlock allows the platform lift to operate.
DR OPEN
◙ (Red) On when the platform lift door is ajar or open (not fully closed)
