WHEEL-SUN 4794632 - Caterpillar

Which Generate This Code:This fault is indicated when the control detects a fault to ground. If this fault exists, the secondary steering system is disabled. The primary steering flow indicator flashes once per second. Connector contact 36 relates to this fault.Note: The following steps may create other indicated faults. Clear these faults when the original fault is corrected.Test Step 1. CHECK THE RELAY
Turn the key start switch to the OFF position.
Remove the secondary steering relay.
On the relay, measure the resistance from terminal 85 to terminal 86.Expected Result:The resistance is greater than 5 ohms.Results:
NO - The resistance is less than 5 ohms.Repair: Replace the relay. Stop.
YES - The resistance is greater than 5 ohms. Proceed to test step 2.Test Step 2. CHECK THE HARNESS CIRCUIT
Clean the relay terminals.
Clean the socket.
Install the relay.
Disconnect the harness connector from the control.
Measure the resistance from contact 36 to contact 39.Expected Result:The resistance should be equal to step 1.Results:
NO - The resistance is less than 5 ohms. A short circuit exists.Repair: Fix the harness or replace the harness. Stop.
YES - The resistance is equal to step 1. Proceed to step 3.Test Step 3. CHECK IF THE FAULT REMAINS
Inspect the connector. Reconnect the connector.
Turn the key start switch to the ON position.
Enter the service mode.
Operate the machine.
Check if the original fault is active.Results:
YES - The fault has not been corrected. Repair: Perform the previous steps. If the cause of the fault is not found, replace the control. Stop.
NO - The fault has been corrected. The fault was probably caused by a poor electrical connection. Resume normal machine operation. Stop.