Differential Oil Cooler System
DTC Chart: PCM
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
Network DTCs (U-codes) are often a result of intermittent concerns such as damaged wiring or low battery voltage occurrences. Additionally, vehicle repair procedures, such as module reprogramming, often set network DTCs. Replacing a module to resolve a network DTC is unlikely to resolve the concern. To prevent repeat network DTC concerns, inspect all network wiring, especially connectors. Test the vehicle battery. REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).
DTC Chart - PCM
DTC | Description | Action |
P1888 | Differential Oil Temperature Sensor Circuit Failure | GO to Pinpoint Test A |
P1889 | Oil Pressure Pump Performance | GO to Pinpoint Test B |
P188A Differential Oil Temperature Too High / Too Low | GO to Pinpoint Test B | |
P188E Oil Pressure Pump Control Circuit | GO to Pinpoint Test C | |
- | All Other PCM DTCs | REFER to: Electronic Engine Controls (303-14D Electronic Engine Controls - 5.2L 32V Ti-VCT, Diagnosis and Testing). |
Symptom Chart
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
In most circumstances, the PCM sets DTCs to help guide with diagnostics. Refer to the DTC Chart before using the symptom chart. The Symptom column lists the vehicle condition. The Possible Sources column lists a detailed vehicle condition. The Action column lists the action to be performed to determine the cause of the condition. Each action lists the components that can cause the system and the individual components in that system. The components are listed in order of disassembly. Use the list of components and the required action to focus on disassembly inspections for the root cause of the concern.
Symptom Chart - Four-Wheel Drive Systems
Condition | Possible Sources | Actions |
|---|---|---|
The PCM does not respond to the scan tool | Fuse Wiring, terminals or connectors PCM | REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing). |
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.