Starting System - 2.0l Ecoboost Ford Focus ST III

Specifications

GENERAL SPECIFICATIONS

Starting System - with Push Button Start

The starting system controls the cranking of the engine. The starter motor is enabled by the starter relay when the relay is activated by the PCM. The PCM receives inputs from the ignition switch - push button start, BCM and CPP switch before activating the starter relay to initiate cranking of the engine.

Scheme 12

Network Message Chart

MODULE NETWORK INPUT MESSAGES POWERTRAIN CONTROL MODULE (PCM)

MODULE NETWORK INPUT MESSAGES BODY CONTROL MODULE (BCM)

This vehicle is equipped with a PATS that disables the engine from cranking if an unprogrammed PATS key is used or an invalid PCM ID is received. The PATS is controlled by the BCM. If there is a PATS concern that causes the engine to be disabled, the IPC displays the corresponding message in the message center. For additional information

Refer to: Passive Anti-Theft System (PATS) - System Operation and Component Description ( PASSIVE ANTI-THEFT SYSTEM (PATS) - SYSTEM OPERATION AND COMPONENT DESCRIPTION ).

Ignition modes are controlled by the RFA module and the BCM. For additional information on the ignition switch - push button start modes

Refer to: Steering Wheel and Column Electrical Components - System Operation and Component Description ( STEERING WHEEL AND COLUMN ELECTRICAL COMPONENTS - SYSTEM OPERATION AND COMPONENT DESCRIPTION ).

The ignition switch - push button start is connected to the RFA module and the BCM as a backup in case of a failure. If there is a circuit failure to either module from the ignition switch - push button start, the modules communicate the ignition switch - push button start request to each other over the Medium Speed Controller Area Network (MS-CAN).

During a start event, the ignition switch - push button start is pressed in combination with the clutch pedal. The RFA module, the BCM and the PCM receive a request to start the engine. The PCM recognizes the correct inputs and provides voltage and ground to energize the starter relay coil and close the starter relay contacts. The starter relay contacts close, providing voltage to the starter solenoid, allowing the starter motor to crank the engine. The PCM disengages the starter motor once an engine Revolutions Per Minute (RPM) threshold is reached, a set crank time is exceeded or the ignition switch - push button start is pressed indicating an engine shutdown.

Body Control Module (BCM)

Refer to: Passive Anti-Theft System (PATS) - System Operation and Component Description ( PASSIVE ANTI-THEFT SYSTEM (PATS) - SYSTEM OPERATION AND COMPONENT DESCRIPTION ).

Intelligent Access (IA) Key

Refer to: Passive Anti-Theft System (PATS) - System Operation and Component Description ( PASSIVE ANTI-THEFT SYSTEM (PATS) - SYSTEM OPERATION AND COMPONENT DESCRIPTION .

Ignition Switch - Push Button Start

The ignition switch - push button start is a momentary contact switch that is hardwired to the BCM, PCM and RFA module. The ignition switch - push button start is used to obtain the OFF, ON or START ignition modes.

Remote Function Actuator (RFA) Module

Refer to: Passive Anti-Theft System (PATS) - System Operation and Component Description ( PASSIVE ANTI-THEFT SYSTEM (PATS) - SYSTEM OPERATION AND COMPONENT DESCRIPTION ).

Powertrain Control Module (PCM)

The PCM provides power and ground to the starter relay to initiate cranking of the engine.

DTC Charts

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.

Refer to: Diagnostic Methods ( DIAGNOSTIC METHODS ) for information about these practices.

PCM DTC CHART

BCM DTC CHART

Symptom Chart: Starting System

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.

Refer to: Diagnostic Methods ( DIAGNOSTIC METHODS for information about these practices.

SYMPTOM CHART

Engine Does Not Crank

Refer to OEM WIRING DIAGRAMS for schematic and connector information.

Normal Operation and Fault Conditions

Refer to: Starting System - System Operation and Component Description ( Starting System - System Operation and Component Description .

DTC FAULT TRIGGER CONDITIONS

Possible Sources

1. Battery
2. Battery cables
3. Starter motor
4. BJB starter relay
5. CPP switch

Visual Inspection and Diagnostic Pre-checks

1. Inspect high current BJB connections.
2. Inspect BJB fuse 13 (30A).
3. Inspect BCM fuse 78 (5A).
4. Inspect the Integrated Keyhead Transmitter (IKT).

Scheme 13

Scheme 14

Scheme 15

Scheme 16

1. A1 CHECK THE BATTERY Check the battery condition and state of charge. REFER to: Battery ( «BATTERY»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) ). Is the battery OK? Yes: GO to A2 No : CHARGE or INSTALL a new battery as necessary. REFER to: Battery ( «BATTERY»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) ).
2. A2 CHECK FOR NO KEY DETECTED MESSAGE IN THE MESSAGE CENTER Check the message center while pressing the ignition switch - push button start. Is No Key Detected displayed? Yes: Diagnose "No Key Found" Message. REFER to: Passive Anti-Theft System (PATS) ( «PASSIVE ANTI-THEFT SYSTEM (PATS) - PUSH BUTTON START»(/ford/focus-st/iii-2012-2015/remont/door-locks-anti-theft-systems/#passive-anti-theft-system-push-button-start-except-electric) ). No : GO to A3
3. A3 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) OPERATION Observe the IPC operation while pressing the ignition switch - push button start. Do some indicators in the IPC illuminate? Yes: GO to A5 No : GO to A4
4. A4 CHECK FOR COMMUNICATION WITH THE SCAN TOOL Ignition ON. Using a diagnostic scan tool, perform the Network Test. Does the BCM, IPC and RFA module pass the Network Test? Yes: Diagnose No Power in On. REFER to: Steering Wheel and Column Electrical Components ( «STEERING WHEEL AND COLUMN ELECTRICAL COMPONENTS»(/ford/focus-st/iii-2012-2015/remont/steering-column-switches/#steering-column-switches-except-electric) ). No : REFER to: Communications Network ( «COMMUNICATIONS NETWORK»(/ford/focus-st/iii-2012-2015/remont/communication-devices/#module-communications-network-except-electric) ).
5. A5 RETRIEVE DTCS Ignition ON. Using a diagnostic scan tool, perform self-tests for: RFA BCM PCM Were Diagnostic Trouble Codes (DTCs) retrieved on-demand during self-test? Yes: For all RFA module Diagnostic Trouble Codes (DTCs), REFER to: Remote Function Actuator (RFA) Module ( «REMOTE FUNCTION ACTUATOR (RFA) MODULE»(/ford/focus-st/iii-2012-2015/remont/cruise-control-systems/#multifunction-electronic-modules-except-electric) ). For BCM Diagnostic Trouble Code (DTC) P0833:23, GO to A22 For all other BCM Diagnostic Trouble Codes (DTCs), REFER to: Body Control Module (BCM) ( «BODY CONTROL MODULE (BCM)»(/ford/focus-st/iii-2012-2015/remont/cruise-control-systems/#multifunction-electronic-modules-except-electric) ). For all PCM Diagnostic Trouble Codes (DTCs), REFER to: Electronic Engine Controls ( «ELECTRONIC ENGINE CONTROLS»(/ford/focus-st/iii-2012-2015/remont/removal-installation/#electronic-engine-controls-20l-ecoboost) ). No : GO to A6
6. A6 CHECK THE PCM (POWERTRAIN CONTROL MODULE) CLUTCH PEDAL AT OR NEAR BOTTOM OF TRAVEL (CPP_BOT) PID Using a diagnostic scan tool, while viewing the PCM Parameter Identification (PID) CPP_BOT, fully apply the clutch pedal and release. Does the Parameter Identification (PID) change from NO to YES when the clutch pedal is fully applied? Yes: GO to A7 No : GO to A19
7. A7 CHECK THE PCM (POWERTRAIN CONTROL MODULE) ENGINE CRANKING (ENG_CRANK) PID Make sure the transmission is in NEUTRAL. Using a diagnostic scan tool, while viewing the PCM Parameter Identification (PID) ENG_CRANK, press the ignition switch - push button start and the clutch pedal. Does the PCM Parameter Identification (PID) ENG_CRANK change from Inactive to Active? Yes: GO to A8 No : GO to A18
8. A8 CHECK THE STARTER RELAY CONTROL OPERATION NOTE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the «MEASURING AUTOMOTIVE CIRCUITS»(/ford/focus-st/iii-2012-2015/remont/oem-general-information/#service-information-introduction-except-electric) . To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector. Remove the BJB starter relay. Measure: Positive Lead Measurement / Action Negative Lead BJB starter relay pin 1 BJB starter relay pin 2 Make sure the transmission is in NEUTRAL. While pressing the ignition switch - push button start and the clutch pedal, observe the test light. Does the test light illuminate when the ignition switch - push button start and clutch pedal are pressed? Yes: GO to A9 No : GO to A16
9. A9 CHECK THE VOLTAGE TO THE STARTER RELAY Ignition OFF. Disconnect: Starter Relay. Measure: Positive Lead Measurement / Action Negative Lead BJB starter relay pin 3 - Is the voltage greater than 11 volts? Yes: No : VERIFY BJB fuse 13 (30A) is OK. If OK, REPAIR the circuit for an open. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short.
10. A10 CHECK THE STARTER MOTOR OPERATION AT THE STARTER RELAY Ignition OFF. Make sure the transmission is in NEUTRAL. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead BJB starter relay pin 3 BJB starter relay pin 5 Did the starter engage and the engine crank? Yes: INSTALL a new starter relay. No : GO to A11
11. A11 CHECK THE BATTERY GROUND CABLES Measure: Positive Lead Measurement / Action Negative Lead G100 G101 G102 Are the voltages greater than 11 volts? Yes: GO to A12 No : CLEAN or INSTALL new negative battery cables as necessary. REFER to: Battery Cables - 2.0L EcoBoost ( «BATTERY CABLES - 2.0L ECOBOOST»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) ).
12. A12 CHECK THE STARTER MOTOR GROUND Measure: Positive Lead Measurement / Action Negative Lead Is the voltage greater than 11 volts? Yes: GO to A13 No : CLEAN the starter motor mounting flange and MAKE SURE the starter motor is correctly mounted.
13. A13 CHECK THE VOLTAGE TO THE STARTER MOTOR Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C197A-1 - Is the voltage greater than 11 volts? Yes: GO to A14 No : INSTALL a new positive battery cable. REFER to: Battery Cables ( «BATTERY CABLES - 2.0L ECOBOOST»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) ).
14. A14 CHECK THE STARTER MOTOR FOR CORRECT OPERATION Ignition OFF. With the transmission in NEUTRAL, momentarily connect a fused jumper wire: Positive Lead Measurement / Action Negative Lead Did the starter engage and the engine crank? Yes: GO to A15 No : INSTALL a new starter motor. REFER to: «Starter Motor»(/ford/focus-st/iii-2012-2015/remont/starter/#starting-system-20l-ecoboost) .
15. A15 CHECK FOR START INPUT AT THE STARTER Connect: Starter Relay. Disconnect Starter C197B-1 ("S"-terminal) . Press the ignition switch - push button start and the clutch pedal. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C197B-1 - Is the voltage greater than 11 volts? Yes: CLEAN the starter solenoid "S" terminal and starter solenoid connector. CHECK the wiring and the starter motor for a loose or intermittent connection. No : REPAIR the circuit for an open.
16. A16 CHECK THE PCM STARTER RELAY CIRCUITS FOR A SHORT TO GROUND Ignition OFF. Disconnect Audio Control Module (ACM) C240A . Disconnect PCM C1381B . Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-9 ohms - C1381B-11 ohms - Are the resistances greater than 10, 000 ohms? Yes: GO to A17 No : REPAIR the affected circuit.
17. A17 CHECK THE PCM STARTER RELAY CIRCUITS FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-9 ohms BJB start relay pin 2 C1381B-11 ohms BJB start relay pin 1 Are the resistances less than 3 ohms? Yes: GO to A24 No : REPAIR the affected circuit.
18. A18 CHECK THE CRANK DETECT CIRCUIT FOR VOLTAGE AT THE PCM Ignition OFF. Disconnect PCM C1381B . While pressing the ignition switch - push button start, measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-17 - Is the voltage greater than 11 volts? Yes: GO to A24 No : REPAIR the circuit.
19. A19 CHECK THE CPP (CLUTCH PEDAL POSITION) SWITCH Ignition OFF. Disconnect PCM C1381B . While fully applying the clutch pedal, measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-13 ohms - Is the resistance less than 3 ohms? Yes: GO to A24 No : GO to A20
20. A20 CHECK THE CPP (CLUTCH PEDAL POSITION) GROUND CIRCUIT FOR AN OPEN Disconnect CPP switch C257 . Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C257-2 ohms - Is the resistance less than 3 ohms? Yes: GO to A21 No : REPAIR the circuit.
21. A21 CHECK THE CPP (CLUTCH PEDAL POSITION) SWITCH CIRCUIT FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-13 ohms C257-1 Is the resistance less than 3 ohms? Yes: INSTALL a new Clutch Pedal Position (CPP) switch. REFER to: Clutch Pedal Position (CPP) Switch ( «CLUTCH PEDAL POSITION (CPP) SWITCH»(/ford/focus-st/iii-2012-2015/remont/removal-installation/#electronic-engine-controls-20l-ecoboost) ). No : REPAIR the circuit.
22. A22 CHECK FOR DTC WITH CPP (CLUTCH PEDAL POSITION) SWITCH DISCONNECTED Ignition OFF. Disconnect CPP switch C257 . Ignition ON. Using a diagnostic scan tool, perform BCM self-test. Was Diagnostic Trouble Code (DTC) P0833:23 retrieved during on-demand self-test with the Clutch Pedal Position (CPP) switch disconnected? Yes: GO to A23 No : INSTALL a new Clutch Pedal Position (CPP) switch. REFER to: Clutch Pedal Position (CPP) Switch ( «CLUTCH PEDAL POSITION (CPP) SWITCH»(/ford/focus-st/iii-2012-2015/remont/removal-installation/#electronic-engine-controls-20l-ecoboost) ).
23. A23 CHECK THE CLUTCH BOTTOM TRAVEL CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect BCM C2280A . Disconnect PCM C1381B . Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-13 ohms - Is the resistance greater than 10, 000 ohms? Yes: GO to A25 No : REPAIR the circuit.
24. A24 CHECK FOR CORRECT PCM OPERATION Ignition OFF. Disconnect and inspect all PCM 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 the PCM connectors. 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 the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new PCM. REFER to: Powertrain Control Module (PCM) ( «POWERTRAIN CONTROL MODULE (PCM)»(/ford/focus-st/iii-2012-2015/remont/removal-installation/#electronic-engine-controls-20l-ecoboost__powertrain-control-module-pcm) ). 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.
25. A25 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION Ignition OFF. Disconnect and inspect all BCM 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 the BCM connectors. Make sure they seat and latch correctly. Connect CPP C257 . Connect PCM C1381B . 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 the TSB instructions. If no TSB addresses this concern, INSTALL a new BCM. REFER to: Body Control Module (BCM) ( «BODY CONTROL MODULE (BCM)»(/ford/focus-st/iii-2012-2015/remont/cruise-control-systems/#multifunction-electronic-modules-except-electric) ). 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.

Correct starter operation relies on correct mounting of the starter to the engine, alignment of the starter ring gear to the flexplate and correct functioning of the starter assembly (internal gears, bearings).

1. Engine
2. Starter motor
3. Starter motor mounting

1. Inspect the starter motor.
2. Inspect the starter motor mounting.

Scheme 17

1. B1 CHECK THE STARTER MOUNTING Inspect the starter mounting bolts for looseness. Is the starter motor mounted correctly? Yes: GO to B2 No : INSTALL the starter motor correctly. REFER to: «Starter Motor»(/ford/focus-st/iii-2012-2015/remont/starter/#starting-system-20l-ecoboost) .
2. B2 CHECK FOR STARTER NOISE Ignition OFF. Connect a remote starter switch between the starter solenoid C197A-1 ("B" terminal) and C197B-1 ("B" terminal) .
3. Engage the starter and verify the noise is due to starter operation. Is the noise due to the starter engagement? Yes: REFER to: Starter Motor Drive Gear and Flywheel Ring Gear Inspection ( «Starter Motor Drive Gear and Flywheel Ring Gear Inspection»(/ford/focus-st/iii-2012-2015/remont/starter/#starting-system-20l-ecoboost__starter-motor-drive-gear-and-flywheel) ). No : REFER to: Engine ( «ENGINE»(/ford/focus-st/iii-2012-2015/remont/mechanical/#engine-system-general-information) .

P0615

Refer to STARTING SYSTEM for schematic and connector information.

Refer to: Starting System - Overview ( Starting System - Overview ).

DTC Fault Trigger Conditions

DTC FAULT TRIGGER CONDITIONS

1. Wiring, terminals or connectors
2. PCM

1. Inspect BJB fuse 13 (30A).

PINPOINT TEST C: P0615

1. C1 CHECK THE PCM STARTER RELAY CIRCUITS FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect Audio Control Module (ACM) C240A . Disconnect PCM C1381B . Disconnect BJB starter relay. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-9 - C1381B-11 - Is any voltage present? Yes: REPAIR the affected circuit. No : GO to C2
2. C2 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CIRCUITS FOR A SHORT TO GROUND Ignition OFF. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-9 ohms - C1381B-11 ohms - Are the resistances greater than 10, 000 ohms? Yes: GO to C3 No: REPAIR the affected circuit. C3 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CIRCUITS FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-9 ohms BJB start relay pin 2 C1381B-11 ohms BJB start relay pin 1 Are the resistances less than 3 ohms? Yes: GO to C4 No : REPAIR the affected circuit. C4 CHECK BJB (BATTERY JUNCTION BOX) STARTER RELAY Ignition OFF. Connect ACM C240A . Connect PCM C175B . Replace BJB starter relay with a known good relay. Ignition ON. Using a diagnostic scan tool, perform the PCM self-test. Is PCM Diagnostic Trouble Code (DTC) P2534 still present? Yes: GO to C5 No : INSTALL a new BJB starter relay. C5 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION Ignition OFF. Disconnect and inspect all PCM 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 the PCM connectors. 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 the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new PCM. REFER to: Powertrain Control Module (PCM) ( «POWERTRAIN CONTROL MODULE (PCM)»(/ford/focus-st/iii-2012-2015/remont/removal-installation/#electronic-engine-controls-20l-ecoboost__powertrain-control-module-pcm) ). 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.

P2535

Refer to STARTING SYSTEM for schematic and connector information.

When the ignition switch - push button start has been pressed, the PCM receives a voltage signal on the crank detect circuit. When the required inputs have been received, the PCM supplies voltage and ground to the starter relay coil.

DTC Fault Trigger Conditions

DTC FAULT TRIGGER CONDITIONS

1. Ignition switch - push button start
2. Wiring, terminals or connectors
3. PCM

1. Inspect BCM fuse 78 (5A).

Scheme 18

Scheme 19

1. D1 CHECK FOR PCM (POWERTRAIN CONTROL MODULE) DTCS Ignition ON. Using a diagnostic scan tool, perform PCM self-test. Is PCM Diagnostic Trouble Code (DTC) P2535 present? Yes: GO to D2 No : For all other PCM Diagnostic Trouble Codes (DTCs), REFER to: Electronic Engine Controls ( «ELECTRONIC ENGINE CONTROLS»(/ford/focus-st/iii-2012-2015/remont/removal-installation/#electronic-engine-controls-20l-ecoboost) ).
2. D2 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH THE PCM (POWERTRAIN CONTROL MODULE) DISCONNECTED Ignition OFF. Disconnect PCM C1381B . Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-17 - Is any voltage present? Yes: GO to D3 No : GO to D6
3. D3 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH THE IGNITION SWITCH - PUSH BUTTON START DISCONNECTED Ignition OFF. Disconnect Ignition switch - push button start C2195 . Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-17 - Is any voltage present? Yes: GO to D4 No : INSTALL a new ignition switch - push button start. REFER to: Ignition Switch - Push Button Start ( «IGNITION SWITCH - PUSH BUTTON START»(/ford/focus-st/iii-2012-2015/remont/steering-column-switches/#steering-column-switches-except-electric) .
4. D4 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH THE RFA (REMOTE FUNCTION ACTUATOR) DISCONNECTED Ignition OFF. Disconnect RFA C4392D . Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-17 - Is any voltage present? Yes: GO to D5 No : Replace the RFA module, REFER to: Remote Function Actuator (RFA) Module ( «REMOTE FUNCTION ACTUATOR (RFA) MODULE»(/ford/focus-st/iii-2012-2015/remont/cruise-control-systems/#multifunction-electronic-modules-except-electric) ).
5. D5 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH THE BCM (BODY CONTROL MODULE) DISCONNECTED Ignition OFF. Disconnect BCM C2280C . Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-17 - Is any voltage present? Yes: Repair the circuit. No : Replace the BCM. REFER to: Body Control Module (BCM) ( «BODY CONTROL MODULE (BCM)»(/ford/focus-st/iii-2012-2015/remont/cruise-control-systems/#multifunction-electronic-modules-except-electric) ). D6 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION Ignition OFF. Disconnect and inspect all PCM 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 the PCM connectors. Make sure they seat and latch correctly. Reconnect all connectors. Make sure they seat and latch correctly. Check and replace BCM fuse 78 if necessary. 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 the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new PCM. REFER to: Powertrain Control Module (PCM) ( «POWERTRAIN CONTROL MODULE (PCM)»(/ford/focus-st/iii-2012-2015/remont/removal-installation/#electronic-engine-controls-20l-ecoboost__powertrain-control-module-pcm) ). 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.

B10E5:11 or B10E5:15

Refer to ELECTRONIC ENGINE CONTROLS for schematic and connector information.

The wake-up control circuit wakes up the PCM prior to engine cranking. The PCM needs to wake up prior to a crank request so it has time to go through its initialization. The wake-up control circuit is controlled by the BCM. The BCM activates the wake-up control circuit when: the driver door is opened. a key is inserted into the ignition. or when the ignition is in the ON or START position.

DTC Fault Trigger Conditions

DTC FAULT TRIGGER CONDITIONS

1. BCM
2. PCM
3. Wiring, terminals or connectors

PINPOINT TEST E: B10E5:11 OR B10E5:15

1. E1 CHECK FOR BCM (BODY CONTROL MODULE) DTCS Ignition ON. Using a diagnostic scan tool, perform BCM self-test. Is Diagnostic Trouble Code (DTC) B10E5:11 present? Yes: GO to E2 No : If DTC B10E5:15 is present, GO to E3 For all other BCM Diagnostic Trouble Codes (DTCs), REFER to: Body Control Module (BCM) ( «BODY CONTROL MODULE (BCM)»(/ford/focus-st/iii-2012-2015/remont/cruise-control-systems/#multifunction-electronic-modules-except-electric) ).
2. E2 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR A SHORT TO GROUND Ignition OFF. Disconnect PCM C1381B . Ignition ON. Using a diagnostic scan tool, clear the BCM Continuous Diagnostic Trouble Codes (DTCs). Using a diagnostic scan tool, perform BCM self-test. Is BCM DTC B10E5:11 present? Yes: GO to E3 No : GO to E7
3. E3 CHECK THE PCM (POWERTRAIN CONTROL MODULE) WAKE-UP SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect BCM C2280A . Disconnect PCM C1381B . Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-14 - Is any voltage present? Yes: REPAIR the circuit. No
4. E4 CHECK THE PCM (POWERTRAIN CONTROL MODULE) WAKE-UP SIGNAL CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-14 ohms - Is the resistance greater than 10, 000 ohms? Yes: GO to E5 No : REPAIR the circuit.
5. E5 CHECK THE PCM (POWERTRAIN CONTROL MODULE) WAKE-UP SIGNAL CIRCUIT FOR AN OPEN Ignition OFF. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C1381B-14 ohms C2280A-32 Is the resistance less than 3 ohms? Yes: GO to E6 No : REPAIR the circuit.
6. E6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION Ignition OFF. Disconnect and inspect all BCM 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 the BCM connectors. 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 the TSB instructions. If no TSB addresses this concern, INSTALL a new BCM. REFER to: Body Control Module (BCM) ( «BODY CONTROL MODULE (BCM)»(/ford/focus-st/iii-2012-2015/remont/cruise-control-systems/#multifunction-electronic-modules-except-electric) ). 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.
7. E7 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION Ignition OFF. Disconnect and inspect all PCM 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 the PCM connectors. 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 the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new PCM. REFER to: Powertrain Control Module (PCM) ( «POWERTRAIN CONTROL MODULE (PCM)»(/ford/focus-st/iii-2012-2015/remont/removal-installation/#electronic-engine-controls-20l-ecoboost__powertrain-control-module-pcm) ). 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.

Starter Motor - Positive Circuit Test

Note. Always make the digital multimeter connection at the component terminal rather than at the wiring end of the connector. Making a connection at the wiring end of the connector could result in false readings because the meter will not pick up a high resistance between the wiring connector and component.

Starter Motor - Ground Circuit Test

Refer to: Health and Safety Precautions ( HEALTH AND SAFETY PRECAUTIONS ).

A slow cranking condition can be caused by resistance in the ground or return portion of the cranking circuit. Check the voltage drop in the ground circuit.

Starter Motor Drive Gear and Flywheel Ring Gear Inspection

Removal

Note. Removal steps in this procedure may contain installation details.

Installation

1. To install, reverse the removal procedure.

See also:
• PASSIVE ANTI-THEFT SYSTEM (PATS) - SYSTEM OPERATION AND COMPONENT DESCRIPTION
• STEERING WHEEL AND COLUMN ELECTRICAL COMPONENTS - SYSTEM OPERATION AND COMPONENT DESCRIPTION
• DIAGNOSTIC METHODS
• ELECTRONIC ENGINE CONTROLS
• BODY CONTROL MODULE (BCM)
• BATTERY
• COMMUNICATIONS NETWORK
• POWERTRAIN CONTROL MODULE (PCM)
• ENGINE
• BATTERY DRAIN CHECK
• FLYWHEEL
• AIR CLEANER
• Pinpoint Test C
• Pinpoint Test D
• Pinpoint Test E
• Starter Motor - Positive Circuit Test
• Starter Motor Drive Gear and Flywheel Ring Gear Inspection
• Starter Motor - Ground Circuit Test