CAMSHAFT-FUEL PUMP 4P0998 - Caterpillar

Illustration 1 g02177504
Connections of the Window Washer Switch
The Window Washer Switch has one input to the switch panel. The input is normally open. When a circuit is measured with a voltmeter, an open circuit will measure approximately 8 DCV to ground. A closed circuit will measure approximately 0 DCV to ground.The diagnostic code is recorded when the status of both the inputs are open.The possible causes of this diagnostic code are listed below:
The ground wire (wire 200-BK(Black)) is open.
The signal (wire 530-OR(Orange)) is permanently open.
The signal (wire 530-OR(Orange)) is permanently closed.
The switch has failed.
The ECM has failed. A failure of the Machine ECM is unlikely. Before performing this procedure, inspect the harness connectors that are involved in the circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all of the connections in the circuit are clean and secure. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing this procedure.The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear the diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 2913 FMI 03 is active before performing this procedure.Note: The switch in this circuit is enclosed in a module. The switch for this circuit is not independently serviceable. The module must be replaced if the switch fails.Test Step 1. CHECK THE GROUND CIRCUIT FOR AN OPEN.
Turn the disconnect switch and the keyswitch to the OFF position.
Disconnect the switch from the machine harness.
Measure the resistance between frame ground and contact C13-04 on the switch panel (wire 530-OR(Orange)) at the connector for the switch. Expected Result:The resistance should be less than 5 ohms.Results:
OK - The resistance is less than 5 ohms.Repair: Replace the module for the wiper control (module 155-7062 Wiper Control).Proceed to Test Step 2.
NOT OK - The resistance is greater than 5 ohms.Repair: The return circuit (wire 530-OR(Orange)) is open in the machine harness. Repair the machine harness or replace the machine harness.STOPTest Step 2. CHECK THE SIGNAL CIRCUITS IN THE HARNESS FOR AN OPEN.
Reconnect the switch to the machine harness.
Disconnect the C1, C13, and C2 harness connectors from the switch panel.
At the machine harness connector for the switch panel, check for continuity between contact C13-04 (wire 530-OR(Orange)) and all sources of negative battery.
Press the switch and then release the switch. Check the switch for continuity. Expected Result:The continuity check is correct.Results:
OK - The continuity check is correct.Repair: Check the status of the diagnostic code. If the cause of the problem is not found, contact your dealership for possible consultation with Caterpillar. This consultation may greatly reduce repair time. If the ECM requires replacement, see Troubleshooting, "Electronic Control Module (ECM) - Replace".STOP
NOT OK - The continuity check is not correct.Repair: There is an open in the signal circuits of the machine harness. Repair the machine harness or replace the machine harness.STOP