Screen Image

120 = FRONT RIGHT

121 = FRONT LEFT

122 = REAR RIGHT

123 = REAR LEFT

Explanation

The twistlock switches sense the position of the top lift frame twistlocks. There is a switch at each corner of the top lift frame. One of the switches is reporting incorrect information.

Causes

• Faulty twistlock switch
• Faulty switch wiring

Operator Actions

• Use override code to continue operation
• Request service

Service Tasks

• Each twistlock switch has complementary outputs (i.e. Normally Open and Normally Closed switches). If the Front ECU detects that both twistlock switch outputs are the same state then the error message will be displayed.
• The twistlock switch cable is either shorting or broken, or that the twistlock switch has failed.
• Swap the twistlock switch with one from another corner and see if the error moves with the switch.