D2 CHECK THE DIFFERENTIAL OIL PUMP RELAY
Is the differential oil pump still operating?
Yes | REPAIR the circuit. |
|---|---|
No | INSTALL a new relay. |
D3 CHECK THE VOLTAGE TO THE DIFFERENTIAL OIL PUMP RELAY
Ignition OFF. Disconnect Differential Oil Pump Relay . Ignition ON. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
Relay Cavity 1 | C4379-4 | |
Relay Cavity 3 | C4379-4 |
Are the voltages greater than 11 volts?
Yes | GO to D4 |
|---|---|
No | VERIFY BJB fuse 46 (20A) is OK. If OK, REPAIR circuit CBB46 (WH/BU). VERIFY BJB fuse 85 (15A) is OK. If OK, REPAIR the circuit. If either fuse is not OK, REFER to the Wiring Diagrams Manual to identify the possible causes of the circuit short. |
D4 CHECK THE DIFFERENTIAL PUMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3427-1 | Ground | |
C3427-2 | Ground |
Is the resistance greater than 10,000 ohms?
Yes | GO to D5 |
|---|---|
No | REPAIR the circuit. |
D5 CHECK THE DIFFERENTIAL PUMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.