Pinpoint Test B : DTCS P173A:12, P173A:14, P173A:16, P173A:17: Notes
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Wiring Diagram Four Wheel Drive Systems for schematic and connector information.
Normal Operation and Fault Conditions
The eLSD system uses input data from a Clutch actuator position sensor as part of the normal system operation. Loss of this sensor input data causes the system to enter a fault condition.
Hydraulic Control Unit Electrical Connectors
| 1. | Hydraulic pump motor |
|---|---|
| 2. | Accumulator pressure sensor |
| 3. | Oil Temperature/pressure sensor |
| 4. | Pressure Control Valve |
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P173A:12 | Clutch Actuator Position Sensor Circuit Range/Performance: Circuit Short To Battery | This DTC occurs when DCMR detects a short to battery signal. |
| P173A:14 | Clutch Actuator Position Sensor Circuit Range/Performance: Circuit Short To Ground or Open | This DTC occurs when DCMR detects an open, a short to ground signal. |
| P173A:16 | Clutch Actuator Position Sensor Circuit Range/Performance: Circuit Voltage Below Threshold | This DTC occurs when DCMR detects Voltage is below threshold value. |
| P173A:17 | Clutch Actuator Position Sensor Circuit Range/Performance: Circuit Voltage Above Threshold | This DTC occurs when DCMR detects Voltage is above threshold value. |
Possible Sources
- Wiring, terminals or connectors
- Oil temperature/pressure sensor (part of HCU)
- DCMR
- Low HCU fluid level