FRAME AS 1304430 - Caterpillar

Table 1
Status of the Load Check Switch    
Mode     Switch Position     E701-PKCircuit (Input 1)     F748-WHCircuit (Input 3)    
ON     Up     Closed (1)     Open (2)    
OFF     Center     Open (2)     Open (2)    
AUTO     Down     Open (2)     Closed (1)    
( 1 ) The circuit is closed to +Battery through terminal 2 of the switch.
( 2 ) Open circuit
Turn the key start switch to the OFF position.
Disconnect the harness connector from the ECM.
At the harness connector, measure the resistance from contact 1 to the inputs of the load check switch (contacts 18 and 19).
Turn the key start switch to the OFF position.
Disconnect the harness connector from the ECM.
At the harness connector, measure the resistance from contact 1 to the inputs of the load check switch (contacts 18 and 19).Expected Result:The values that were measured should match the values that are listed in table 5.Results:
OK - The values that were measured are correct. The switch is correct and the switch harness is correct. Proceed to test step 7.
NOT OK - The values that were measured are NOT correct. The switch is NOT correct or the switch harness is NOT correct. Proceed to test step 6.Test Step 6. CHECK THE SWITCH
Table 2
Status of the Load Check Switch    
Mode     Switch Position     E701-PKCircuit (Input 1)     F748-WHCircuit (Input 3)    
ON     Up     Closed (1)     Open (2)    
OFF     Center     Open (2)     Open (2)    
AUTO     Down     Open (2)     Closed (1)    
( 1 ) The circuit is closed to +Battery through terminal 2 of the switch.
( 2 ) Open circuit
Turn the key start switch to the OFF position.
Disconnect the harness connector from the ECM.
At the harness connector, measure the resistance from contact 1 to the inputs of the load check switch (contacts 18 and 19).
Turn the key start switch to the OFF position.
Disconnect the harness connector from the ECM.
At the harness connector, measure the resistance from contact 1 to the inputs of the load check switch (contacts 18 and 19).Expected Result:The values that were measured should match the values that are listed in table 5.Results:
OK - The measured readings are correct. The switch harness is faulty.Repair: Repair the harness or replace the harness. Proceed to test step 7.
NOT OK - The measured readings are not correct. The load check switch is faulty.Repair: Replace the load check switch. Stop.Test Step 7. TEST THE WIRING FROM THE LOAD CHECK SOLENOID TO GROUND
Turn the key start switch to the OFF position.
Measure the resistance from the load check relay to the load check solenoid.Expected Result:The measured resistance from the load check relay to the load check solenoid is less than 5 ohms.Results:
OK - The measured resistance from the load check to the load check solenoid is less than 5 ohms. The wiring is correct. The