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66 - Form No. 56043161 - Clean Track

L24

Curtis Controller Diagnostics

Diagnostics Method A - LED Panel and Speed Control Fault Code Indicator

Diagnostics Method A uses the machine’s control display LED panel and Speed Control Fault Code Indicator (F).

The Curtis 1210- (24V) speed control will output a fault code if there is a problem associated with the speed control

andwheeldrivesystem.SeeFigure30.Ifaspeedcontrolfaultoccurs,thedisplayLEDpanel(D) will indicate

03. When the 03isdisplayedanddetectsafault,theSpeedControlFaultIndicator(F)willashaspecialerror

codesequenceuntilthefaultiscorrected.SeetheStatus LED Fault Codes (Table 1) for a description of the fault

indications.

Service Note: Thisishowtoreadtheerrorcodestatuslight:Forexample,OOO=twolightflashes,ashort

pause,oneflash,thenalongpause,thenthecodewillberepeated.Thisindicatesafaultcode

2,1.

Diagnostics Method B - Curtis Programmer

DiagnosticsMethodBusestheoptionalhand-heldCurtisprogrammermodel1307,orthenewmodel1311MP1101.

Withaprogrammer,diagnosticsandtroubleshootingismoredirectthanwiththeLEDalone.Theprogrammerpresents

complete diagnostic information in plain language with no codes to decipher. Faults are displayed in the Diagnostic

Menu,andthestatusofthecontrollerinputs/outputsisdisplayedintheTestMenu.

The following four-step process is generally used for diagnosing and troubleshooting an inoperative vehicle:

1. Visually inspect the vehicle for obvious problems.

2. Diagnose the problem using the programmer.

3. Test the circuitry with the programmer.

4. Correct the problem.

5. Repeat the last three steps as necessary until the vehicle is operational.

Forexample,avehicleisbroughtinforrepairthatdoesnotoperatein“forward”.

1. Examine the vehicle and its wiring for any obvious problems such as broken wires or loose connections.

2. Connecttheprogrammer,putitindiagnosticmode,thenreadthedisplayedfaultinformation.Inthisexample,the

displayshows“NoFaultsPresent”,indicatingthatthecontrollerhasnotdetectedanythingoutofthenorm.

3. Put the programmer in test mode and observe the status of inputs and outputs in the forward direction. In this

example,thedisplayshowsthattheforwardinputdidnotactivatewhen“forward”wasselected,whichmeansthe

problem is either in the electronic throttle or the throttle wiring.

4. Checkorreplacetheelectronicthrottleandwiring,thenrepeatthetest.Iftheprogrammershowstheforward

switchclosingandthevehiclenowdrivesnormally,theproblemhasbeencorrected.

Refer to the Status LED Fault Codes (Table 1) for suggestions covering a wide range of possible faults.

Clarke Clean Track® L24 56317170 User Manual

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