ROTATING GP-PUMP 3699691 - Caterpillar

Diagnostic Operation
To assist with troubleshooting, the ride/fan control records and stores fault information for the ride/fan control system. The control shows the fault information on the display.Display Modes
Ride/Fan Control Display
(1) Readout. (2) Fault present indicator (red). (3) Service mode indicator (yellow). (4) Power indicator (green).The control has two display modes. The display modes are:* Mode 0 - Normal Mode* Mode 1 - Service ModeWhen power is applied, the control enters normal mode (mode 0). To enter the other modes, the service and clear inputs are grounded at the same time. This causes the mode numbers (0 and 1) to scroll on readout (1). When ground is removed from the service and clear inputs, the control enters the mode which corresponds to the number that is presently shown. For example; removing ground when mode number "- 1 -." is shown on readout (1), causes the control to enter service mode. Each time "- 0 -." is shown, the scrolling stops. The service and clear contacts must be opened from ground, then closed to ground, to scroll the modes again.The display mode is changeable at any time. Whenever the key start switch is turned from OFF to ON, with the set and clear inputs not grounded, the display enters normal mode (mode 0).The service connector, located near the control, provides access to the service and clear inputs. Connector contact 1 is the service input and contact 2 is the clear input. Connector contact 3 and 4 are both ground. The easiest way to ground these inputs is with a service box. See the topic Service Box in the Testing And Adjusting section for more information.Normal Mode (Mode 0)
Normal mode (mode 0) is used during normal machine operation. The control enters normal mode when it is powered-up (key start switch turned on). The control is constantly checking the inputs and outputs for correct operation. When in normal mode, the control display shows the operator or service personnel:* Whether the control is operating properly. Whenever the key start switch is turned to the ON position, the display performs a self test. See the topic Self Test in the Testing And Adjusting section. Power indicator (4) remains ON to show that power is applied to the control.* Whether a system fault exists. The control continuously checks for faults in the ride/fan control system. A fault is recorded when a certain component of the ride/fan control system is not operating properly. Faults are detected by the control when a signal at a connector contact of the control is outside a valid range. Detected faults are remembered and shown on readout (1).Each detected fault consists of three identifiers and an indicator. The identifiers are shown on readout (1). Service personnel interpret the identifiers to assist with troubleshooting. The identifiers and indicator are:* Component Identifier (CID) - The CID is a three digit code that tells which component is faulty. The CID is shown on readout (1). For example; "363." means the circuit for the ride