FILTER ELEMENT-WTR SEP & FUEL 5134490 - Caterpillar

This procedure covers the following diagnostic codes:
Table 1
Diagnostic Trouble Codes
J1939 Code CDL Code Code Description
(code descriptions may vary) Comments
1076-5 18-5 Engine Fuel Injection Pump Fuel Control Valve : Current Below Normal The Electronic Control Module (ECM) detects the following conditions:
Low current in the output from the ECM to the fuel pump solenoid for 0.6 seconds
There are no active 168 diagnostic codes.
The ECM has been powered for at least 0.25 seconds.
If equipped, the warning lamp will come on. The ECM will log the diagnostic code.
This diagnostic code detects a fault in the circuit for the fuel pump solenoid.
1076-6 18-6 Engine Fuel Injection Pump Fuel Control Valve : Current Above Normal The ECM detects the following conditions:
High current in the output from the ECM to the fuel pump solenoid for 0.6 seconds.
There are no active 168 diagnostic codes.
The ECM has been powered for at least 0.25 seconds.
If equipped, the warning lamp will come on. The ECM will log the diagnostic code.
This diagnostic code detects a fault in the circuit for the fuel pump solenoid. This fault is most likely to be caused by a high side short to ground or a low side short to power.
1188-5 526-5 Engine Turbocharger 1 Wastegate Drive : Current Below Normal (C7.1 engine only) The ECM detects the following conditions:
A low current condition in the output from the ECM to the solenoid for the wastegate regulator.
There are no active 168 diagnostic codes.
The ECM has been powered for at least 2 seconds.
If equipped, the warning lamp will come on once the diagnostic code has been active for 30 seconds. The diagnostic code will be logged.
The engine will be derated while this diagnostic code is active. After the engine derate has been activated, the electronic service tool will indicate "Turbo Protection Derate Active".
This diagnostic code detects a fault in the wastegate regulator that is most likely to be an open circuit.
1188-6 526-6 Engine Turbocharger 1 Wastegate Drive : Current Above Normal (C7.1 engine only) The ECM detects the following conditions:
A high current condition in the output from the ECM to the solenoid in the wastegate regulator
There are no active 168 diagnostic codes.
The ECM has been powered for at least 2 seconds.
If equipped, the warning lamp will come on once the diagnostic code has been active for 30 seconds. The diagnostic code will be logged.
The engine will be derated while this diagnostic code is active. After the engine derate has been activated, the electronic service tool will indicate "Turbo Protection Derate Active".
This diagnostic code detects a fault in the circuit for the wastegate regulator. This fault is most likely to be caused by a high side short to ground or a low side short to power.
Follow the troubleshooting procedure in order to identify the root cause of the fault. The following background information is related to this procedure:Electronically Controlled WastegateThe C7.1 engine has a turbocharger with an electronically controlled wastegate. Typically, the wastegate is a mechanical valve that is used in the turbocharger in order to regulate the