FUSE BLOCK & HARNESS AS 1680275 - Caterpillar

Conditions Which Generate This Code:The 02 diagnostic code indicates that there is a problem with the signal from the module for engine oil pressure and engine coolant temperature.Test Step 1. Check the Voltage At the Status Control Module (SCM)
Measure the voltage between terminal 3 and terminal 4 at the SCM.
Turn the main disconnect switch to the OFF position.
Disconnect the 3-pin connector at the module for the pressure and temperature.
Turn the main disconnect switch to the ON position.
Measure the voltage between terminal 3 and terminal 4 at the SCM.Expected Result:The voltage is between 11 VDC and 15 VDC for both measurements.Results:
OK - The voltage is between 11 VDC and 15 VDC for both measurements. Proceed to Test Step 2.
Not OK - The voltage is above 20 VDC for both measurements.Repair: Replace the SCM. Troubleshoot the module for the pressure and temperature. If necessary, replace the module.Verify that the repair eliminates the problem.STOP
Not OK - The voltage is between 15 VDC and 20 VDC for both measurements.Repair: Replace the SCM. Verify that the repair eliminates the problem.STOP
Not OK - The voltage is below 11 VDC for both measurements.Repair: Replace the SCM. Verify that the repair eliminates the problem.STOP
Not OK - The voltage is below 11 VDC for the first measurement. The voltage is between 11 VDC and 15 VDC for the second measurement.Repair: Replace the module for the pressure and temperature. Verify that the repair eliminates the problem.STOPTest Step 2. Check the Voltage At the SCM With the +Battery Wire Disconnected from Terminal 4 of the SCM
Measure the voltage between terminal 3 and terminal 4 at the SCM.
Turn the main disconnect switch to the OFF position.
Disconnect the wire from terminal 4 of the SCM.
Turn the main disconnect switch to the ON position.
Measure the voltage between terminals 3 and 4 at the SCM.Expected Result:The voltage is between 11 VDC and 15 VDC for both measurements.Results:
OK - The voltage is between 11 VDC and 15 VDC for both measurements. The power supply is OK. Proceed to Test step 3.
Not OK - The voltage is below 11 VDC before the wire at terminal 4 is disconnected and the voltage is between 11 VDC and 15 VDC after the wire at terminal 4 is disconnected.Repair: There is a problem with the −Battery circuit between the SCM and the module for the pressure and the temperature.Repair the connectors or wiring and/or replace the connectors or wiring. Verify that the repair eliminates the problem.STOP
Not OK - The voltage is above 15 VDC before the wire at terminal 4 is disconnected and the voltage is between 11 VDC and 15 VDC after the wire at terminal 4 is disconnected.Repair: There is a problem with the circuit between the SCM and the module for the pressure and the temperature.Repair the connectors or wiring and/or replace the connectors or wiring. Troubleshoot the module for the pressure and temperature. If necessary, replace the module.Verify that the repair eliminates the problem.STOPTest Step 3. Check the Voltage Between Terminal 5 and Terminal