Pinpoint Test A : DTCS P0932:12, P0932:14, P0932:16, P0932:17

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.

A1 CHECK HCU FLUID LEVEL
- CHECK the HCU fluid level.
Is the HCU fluid level within specification?

Yes Using a diagnostic scan tool, PERFORM the eLSD service routine.

No ADD fluid until it is at the correct level, GO to A2

A2 CHECK FOR DCMR DTCS

Enter the following diagnostic mode: DCMR Self-Test.

Is DTCs P0932:12 or P0932:14 or P0932:16 or P0932:17 recorded?

Yes

GO to A3

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

A3 CHECK THE ACCUMULATOR PRESSURE SENSOR CIRCUIT FOR SHORT TO VOLTAGE

Ignition OFF.

Disconnect Accumulator Pressure Sensor C3831 .

Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3831-1	Courtesy of FORD MOTOR COMPANY	C3831-3
C3831-4	Courtesy of FORD MOTOR COMPANY	C3831-3

Is the voltage greater than 4.5 volts?

Yes

GO to A4

GO to A10

A4 CHECK THE ACCUMULATOR PRESSURE SENSOR CIRCUIT RESISTANCE

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Accumulator pressure sensor, component side, pin 1	Courtesy of FORD MOTOR COMPANY	Accumulator pressure sensor component side pin 4

Is the resistance between 1500 to 2500 ohms?

Yes

GO to A5

No	INSTALL a new HCU. REFER to: Hydraulic Control Unit (HCU) .

A5 CHECK THE ACCUMULATOR PRESSURE SENSOR CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect Accumulator Pressure Sensor C3831 .

Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Accumulator pressure sensor, component side, pin 3.	Courtesy of FORD MOTOR COMPANY	HCU housing.

Is the resistance greater than 10, 000 ohms?

Yes

GO to A6

No	INSTALL a new HCU. REFER to: Hydraulic Control Unit (HCU) .

A6 CHECK THE ACCUMULATOR PRESSURE SENSOR GROUND

Ignition OFF.

Measure:

Positive Lead	Measurement / Action	Negative Lead
Courtesy of FORD MOTOR COMPANY Accumulator pressure sensor component side, pin 4.	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY Accumulator pressure sensor component side, pin 3.

Is the resistance greater than 5 ohms?

Yes

GO to A7

No	INSTALL a new HCU. REFER to: Hydraulic Control Unit (HCU) .

A7 CHECK THE ACCUMULATOR PRESSURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect Accumulator Pressure Sensor C3831 .

Disconnect DCMR C3396 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3831-4	Courtesy of FORD MOTOR COMPANY	C3831-3

Is the resistance greater than 10, 000 ohms?

Yes

GO to A8

No	REPAIR the circuit.

A8 CHECK THE ACCUMULATOR PRESSURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO CHASSIS GROUND

Ignition OFF.

Disconnect DCMR C3396 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3831-4	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to A9

No	REPAIR the signal circuit for a short to ground.

A9 CHECK THE ACCUMULATOR PRESSURE SENSOR VOLTAGE CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect Accumulator Pressure Sensor C3831 .

Disconnect DCMR C3396 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3831-1	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes	GO to A12.

No	REPAIR the circuit.

A10 CHECK DCMR FOR VCC SUPPLY FAULT
- Ignition OFF.
- Connect All HCU Harness Connectors (If previously disconnected).
- Enter the following diagnostic mode: DCMR Self-Test.
Is DTC U200A:16 or U200A:17 present?

Yes GO to Pinpoint Test M

No GO to A11

A11 CHECK THE ACCUMULATOR PRESSURE VOLTAGE CIRCUIT FOR ABOVE THRESHOLD

Ignition OFF.

Disconnect Accumulator Pressure Sensor C3831 .

Inspect the connector for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3831-1	Courtesy of FORD MOTOR COMPANY	C3831-3

Is the voltage greater than 5.5 volts?

Yes

GO to A12

No	Using a diagnostic scan tool, PERFORM the eLSD service routine.

A12 CHECK THE ACCUMULATOR PRESSURE VOLTAGE CIRCUIT FOR A SHORT TO VOLTAGE

Ignition OFF.

Disconnect DCMR C3396 .

Inspect the connectors for damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals.

Ignition ON.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3831-1	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage detected?

Yes	REPAIR the circuit.

GO to A13

A13 CHECK FOR CORRECT DCMR OPERATION

Disconnect and inspect all DCMR connectors.

Repair:
- corrosion (install new connectors or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect all the DCMR connectors and make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new DCMR. REFER to: Differential Control Module Rear (DCMR) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.