Pinpoint Test E : DTCS P0745:12, P0745:13, P0745:19

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.

E1 CHECK FOR DCMR DTCS

Enter the following diagnostic mode: DCMR Self-Test.

Are any DTCs present?

Yes	For DTC P0745:12, GO to E2For DTC P0745:13, GO to E3For DTC P0745:19, GO to E5 For all other DTCs, REFER to the DTC chart.

GO to E2

E2 CHECK THE PRESSURE CONTROL VALVE FOR SHORT TO BATTERY

Ignition OFF.

Disconnect Pressure Control Valve C3832 .

Disconnect DCMR C3396 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3832-1	Courtesy of FORD MOTOR COMPANY	Ground
C3832-2	Courtesy of FORD MOTOR COMPANY	Ground

Is any voltage detected?

Yes	REPAIR the circuit.

GO to E8

E3 CHECK THE PRESSURE CONTROL VALVE FOR AN OPEN

Ignition OFF.

Disconnect Pressure Control Valve C3832 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
Pressure control valve, component side, pin 1	Courtesy of FORD MOTOR COMPANY	Pressure control valve, component side, pin 2

Is the resistance greater than 10 ohms?

Yes	INSTALL a new eLSD HCU. REFER to: Hydraulic Control Unit (HCU) .

GO to E4

E4 CHECK THE PRESSURE CONTROL VALVE CIRCUIT FOR AN OPEN

Disconnect DCMR C3396 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3832-1	Courtesy of FORD MOTOR COMPANY	C3396-6
C3832-2	Courtesy of FORD MOTOR COMPANY	C3396-5

Are the resistances less than 3 ohms?

Yes

GO to E8

No	REPAIR the circuit in question. CLEAR the DTCs.

E5 CHECK THE PRESSURE CONTROL VALVE CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect Pressure control valve C3832 .

Disconnect DCMR C3396 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3832-1	Courtesy of FORD MOTOR COMPANY	C3832-2

Is the resistance greater than 10, 000 ohms?

Yes

GO to E6

No	REPAIR the circuit.

E6 CHECK THE PRESSURE CONTROL VALVE CIRCUIT FOR A SHORT TO CHASSIS GROUND

Measure:

Positive Lead	Measurement / Action	Negative Lead
C3832-1	Courtesy of FORD MOTOR COMPANY	Ground
C3832-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to E7

No	REPAIR the signal circuit for a short to ground.

E7 CHECK THE PRESSURE CONTROL VALVE FOR OPEN

Ignition OFF.

Disconnect Pressure Control Valve C3832 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
Pressure control valve, component side, pin 1.	Courtesy of FORD MOTOR COMPANY	Pressure control valve, component side, pin 2.

Is the resistance greater than 10 ohms?

Yes	INSTALL a new HCU. REFER to: Hydraulic Control Unit (HCU) .

GO to E8

E8 CHECK FOR CORRECT DCMR (DIFFERENTIAL CONTROL MODULE REAR) OPERATION

Disconnect and inspect all DCMR connectors.

Disconnect and inspect all eLSD HCU 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.

Reconnect all the eLSD HCU 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.