PROBLEM B: An Indicator That Must Be ON is NOT ON

PROBLEM C: An Indicator That Must Be OFF, Is ON.

TM-5-3805-258-24-1 Loader Scoop Type DED 4x4 Articulated Frame Steer 2 1/2 Cubic Yard Bucket (CCE) Airborne/Airmobile Manual
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TM 5-3805-258-24-1 9 5 0 B O P E R A T O R ’ S S T A T I O N E L E C T R I C A L T R O U B L E S H O O T I N G PROBLEM B: An Indicator That Must Be ON is NOT ON. Possible Causes: a. Switch is bad. b. Wire, in the harness, that goes to the switches, is grounded or shorted to another wire in the harness that is at ground potential. c. Operator panel is bad. 1. Remove the power wire (not the B wire) from any switch (sensor) and the indicator must turn ON. If the indicator was NOT ON at first but was one that must be ON, and when the wire was removed from the switch it: Did Turn ON Did Not Turn ON The switch is bad. Replace the switch. The harness has a short or the operator panel is bad. Go to Step 2. 2. Put tape on the end of the wire that was removed from the switch so that it can not be grounded to the machine. Disconnect the harness plug from the operator panel. Use an 8S4627 Circuit Tester to check for continuity between the battery (-) [Socket (2)] and the connection for the switch, in the harness plug. The socket for the different switches is shown in TABLE 2. I TABLE 2 I Connection Indicator 5 Engine 011 Pressure 8 Low Brake Alr Pressure 9 Parking Brake 12 Coolant Flow Continuity No Continuity There is a ground or short in the harness. Repair or Replace the operator panel. replace the harness. . 4-112

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