Pinpoint Test BD: PSCM (Power Steering Control Module) DTC (Diagnostic Trouble Code) U3001:68

Refer to WIRING DIAGRAMS - POWER STEERING CONTROLS for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Power Steering - System Operation and Component Description .

Description

Description
When the ignition is set to OFF, the PSCM remains powered up for a short period of time to store data in memory. When the ignition is set to ON, the PSCM retrieves this information and if the information is missing or corrupted a DTC is set.

Pinpoint Test Applicability

Pinpoint Test Applicability
This test applies to PSCMDTC U3001:68 only. This test does not apply to any other module except the PSCM.

DTC Diagnostic Strategy

DTC Diagnostic Strategy
If the module DTC list results in a large number of Diagnostic Trouble Codes (DTCs), diagnose all module hard faults first (C102D, C1B00, C200B, C200C, C200D, U2011 and U3000) before diagnosing any network faults (lost communication or invalid data). If voltage concern Diagnostic Trouble Codes (DTCs) are present, diagnose those after any module hard faults and before any network faults. Diagnose all current and active Diagnostic Trouble Codes (DTCs) before diagnosing any historic Diagnostic Trouble Codes (DTCs).

Pinpoint Test Purpose

Pinpoint Test Purpose
To verify PSCM U3001:68 is present and provide diagnostics if DTC U3001:68 is currently present and active in the PSCM.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PSCM U3001:68	Control Module Improper Shutdown Performance: Event Information	This DTC sets after the PSCM experiences a momentary loss of vehicle voltage. Prior to shutting down, the PSCM stores data in memory, when the ignition is set to ON, the PSCM reads this data and if it is missing or corrupted, this DTC sets. Therefore, the presence of DTC U3001 means the loss of vehicle voltage occurred prior to the DTC being set. Consult the DTC Index for additional information if needed. This DTC also sets if any of the charging system (i.e., battery, alternator, etc.) components, fuses, wiring or connections between the charging system and the PSCM are corroded, loose, damaged or disconnected.

Possible Causes

Fuse(s)
Wiring, terminals, or connectors
12-volt battery
Charging system

Visual Inspection and Pre-checks

Make sure the vehicle battery terminals and cables are free of any corrosion and other contaminants.
Make sure the vehicle battery terminals are tightened to their correct torque specifications.
Make sure all PSCM fuses in the BJB and high-current BJB are OK.

BD1 RECHECK THE PSCM (POWER STEERING CONTROL MODULE) DTCS
- Start the engine.
  - Make sure the engine ready indicator is illuminated.
- Using a diagnostic scan tool, carry out the PSCM self-test. No VCM Recognized.
Is DTC U3001:xx present and active in the PSCM '

Yes GO to BD2

No The system is operating correctly at this time. The DTC may have set due to a previous low battery voltage condition.

BD2 CHECK THE VEHICLE BATTERY AND CHARGING SYSTEM VOLTAGE
- Ignition OFF.
- REFER to: BATTERY . and carry out Pinpoint Test A: Battery Condition Test (battery state of charge).
Did the battery pass the condition test (battery state of charge)?

Yes GO to BD3

No INSTALL a new 12-volt battery. REFER to: BATTERY .

BD3 CHECK THE PSCM (POWER STEERING CONTROL MODULE) VOLTAGE SUPPLY

Ignition OFF.

Measure the voltage between:

Positive Lead	Measurement / Action	Negative
Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY

Record the measured battery voltage.

Disconnect PSCM connector C225B.

Disconnect PSCM connector C225C.

Disconnect PSCM connector C225A.

Measure the voltage between:

Positive Lead	Measurement / Action	Negative Lead
C225B Pin 1	Courtesy of FORD MOTOR COMPANY	Ground

Measure the voltage between:

Positive Lead	Measurement / Action	Negative Lead
C225C Pin 1	Courtesy of FORD MOTOR COMPANY	Ground

Measure the voltage between:

Positive Lead	Measurement / Action	Negative Lead
C225A Pin 1	Courtesy of FORD MOTOR COMPANY	Ground

Is the measured voltage within 0.2 volts of the recorded battery voltage?

Yes

GO to BD4

No	REPAIR the circuit.

BD4 CHECK THE PSCM (POWER STEERING CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Disconnect the battery negative cable. REFER to: Battery Disconnect and Connect .

Measure the voltage between:

Positive Lead	Measurement / Action	Negative Lead
C225B Pin 2	Courtesy of FORD MOTOR COMPANY	Ground

Measure the voltage between:

Positive Lead	Measurement / Action	Negative Lead
C225C Pin 2	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes

GO to BD5

No	REPAIR the circuit.

BD5 VERIFY PSCM (POWER STEERING CONTROL MODULE) WIRING HARNESS VOLTAGE CONNECTOR

Using a good light source, inspect the PSCM electrical connectors for the following:
- corrosion - install a new connector or terminal and clean the module pins.
- damaged or bent pins - install new terminals or pins.
- pushed-out pins - install new pins as necessary.
- spread terminals - install new terminals as necessary.

Connect PSCM connector C225A. Make sure the connection is clean, tight and not cross-threaded.

Connect PSCM connector C225B. Make sure the connection is clean, tight and not cross-threaded.

Connect the battery negative cable. REFER to: Battery Disconnect and Connect .

Ignition ON.

Using a diagnostic scan tool, clear the PSCMDTC. No VCM Recognized.

Ignition OFF.

Wait at least 90 seconds for the modules to completely shut OFF.

Start the engine.

Using a diagnostic scan tool, carry out the PSCM self-test. No VCM Recognized.

Is DTC U3001:xx present and active in the PSCM '

Yes

GO to BD6

No	The PSCM communications are working correctly at this time. The concern may have been caused by a loose or corroded PSCM electrical connector or a wiring harness in-line electrical connector and was repaired during this procedure.

BD6 CHECK FOR CORRECT PSCM (POWER STEERING CONTROL MODULE) POWER AND GROUND JOINT OPERATION

Ignition OFF.

Disconnect and inspect the PSCM ground joint connection, clean or repair as necessary. Refer to WIRING DIAGRAMS - POWER STEERING CONTROLS for ground joint information.

Disconnect high-current BJB connector C1617B.

Inspect the high-current BJB joint connection, clean or repair as necessary.

Inspect the PSCM ground joint connection, clean or repair as necessary. Refer to WIRING DIAGRAMS - POWER STEERING CONTROLS for high-current PSCM ground joint information.

Connect the PSCM ground joint connection. Make sure the connection is clean, tight and not cross-threaded.

Connect the high-current BJB connector C1617B. Make sure the connection is clean, tight and not cross-threaded.

Ignition ON.

Using a diagnostic scan tool, clear the PSCMDTC. No VCM Recognized.

Ignition OFF.

Wait at least 90 seconds for the modules to completely shut OFF.

Start the engine.
- Make sure the engine ready indicator is illuminated.

Using a diagnostic scan tool, carry out the PSCM self-test. No VCM Recognized.

Is DTC U3001:xx present and active in the PSCM '

Yes	The concern may be an intermittent condition with the PSCM wiring harness which cannot be detected by voltage or resistance checks. GO to BD7

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded PSCM electrical connector or a wiring harness in-line electrical connector and was repaired during this procedure.

BD7 VERIFY PSCM (POWER STEERING CONTROL MODULE) WIRING HARNESS POWER AND GROUND CIRCUIT OPERATION

Start the engine.
- Make sure the engine ready indicator is illuminated.

Make sure the front wheels are on the ground and the vehicle is not being supported by other means.
- Make sure the front tires are clean and dry.
- Make sure the ground under the front tires is clean and dry.

Take the following measurement while turning the steering wheel back and forth, lock to lock, continuously at 1 revolution per second.

Measure the voltage between:

Positive Lead	Measurement / Action	Negative
Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY

Record the measured battery voltage.

View the following PID while turning the steering wheel back and forth, lock to lock, continuously at 1 revolution per second.

Access the PSCM and monitor the MOD_SUP_V (Voltage, V) PID.

Compare the measured battery voltage with the PID display.

Do the measured battery voltage and the PID display differ by more than 1.5 volts?

Yes	INSTALL a new PSCM wiring harness. GO to BD8

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded PSCM electrical connector or a wiring harness in-line electrical connector and was repaired during this procedure.

BD8 CHECK NEW PSCM (POWER STEERING CONTROL MODULE) WIRING HARNESS FOR INTERMITTENT POWER AND GROUND CIRCUIT OPERATION

Start the engine.
- Make sure the engine ready indicator is illuminated.

Make sure the front wheels are on the ground and the vehicle is not being supported by other means.
- Make sure the front tires are clean and dry.
- Make sure the ground under the front tires is clean and dry.

Take the following measurement while turning the steering wheel back and forth, lock to lock, continuously at 1 revolution per second.

Measure the voltage between:

Positive Lead	Measurement / Action	Negative
Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY	Courtesy of FORD MOTOR COMPANY

Record the measured battery voltage.

View the following PID while turning the steering wheel back and forth, lock to lock, continuously at 1 revolution per second.

Access the PSCM and monitor the MOD_SUP_V (Voltage, V) PID.

Compare the measured battery voltage with the PID display.

Do the measured battery voltage and the PID display differ by more than 1.5 volts?

Yes

GO to BD1

GO to BD9

BD9 RECHECK THE PSCM (POWER STEERING CONTROL MODULE) DTCS
- Ignition ON.
- Using a diagnostic scan tool, clear the PSCMDTC. No VCM Recognized.
- Ignition OFF.
- Wait at least 90 seconds for the modules to completely shut OFF.
- Start the engine.
  - Make sure the engine ready indicator is illuminated.
- Using a diagnostic scan tool, carry out the PSCM self-test. No VCM Recognized.
Is DTC U3001:xx present and active in the PSCM '

Yes GO to BD10

No The repair is complete, no further action is required.

BD10 CHECK FOR APPLICABLE SERVICE ARTICLES

Ignition OFF.

Check OASIS for any applicable service messages; TSB, GSB, SSM or FSA.

Does a service article exist for EPAS DTC U3001:xx Control Module Improper Shutdown Performance?

Yes	DISCONTINUE this test and FOLLOW the service article instructions.

REFER to: CHARGING SYSTEM - 1.5L ECOBOOST (132KW 180PS) - I3 (Y1) . REFER to: CHARGING SYSTEM - 2.0L ECOBOOST (177KW 240PS) - MI4 . REFER to: Charging System - 2.5L Duratec - Hybrid (121kW/164PS) (BG)
. For further diagnosis of the charging system. The PSCM wiring harness, circuits and electrical connectors are NOT a root cause of DTC U3001. PSCMDTC U3001 does not require PSCM or EPAS replacement.