Starting System - 2.0l Duratec-He Ford Focus ST III

Specifications

TORQUE SPECIFICATIONS

GENERAL SPECIFICATIONS

Starting System - without 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, TCM (automatic transmission), CPP switch (manual transmission) and the BCM before activating the starter relay to initiate cranking of the engine.

Scheme 1

Network Message Chart

MODULE NETWORK INPUT MESSAGES POWERTRAIN CONTROL MODULE (PCM)

This vehicle is equipped with a PATS that disables the engine from cranking and starting 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 ).

Under normal operation, when the ignition is turned to START, the PCM receives the inputs

1. Voltage signal on the crank detect circuit from the ignition switch.
2. PATS enable message from the BCM.
3. Correct transmission park or neutral input from the TCM (automatic transmission).
4. Correct bottom of travel input from the CPP switch (manual transmission).

When the PCM receives the correct inputs, voltage and ground is supplied to the starter relay coil. When the starter relay coil is energized, it provides voltage to the starter solenoid, allowing the starter motor to crank and start the engine.

The PCM disengages the starter once an engine Revolutions Per Minute (RPM) threshold is reached, a set crank time is exceeded or the ignition is turned OFF.

Integrated Keyhead Transmitter (IKT)

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

Passive Anti-Theft System (PATS) Transceiver

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

Ignition Switch

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

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, TCM (automatic transmission), CPP switch (manual transmission) and BCM before activating the starter relay to initiate cranking of the engine.

Scheme 2

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 either the brake pedal (automatic transmission) or the clutch pedal (manual transmission) input. 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 ).

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 (Without Push Button Start)

Refer to STARTING SYSTEM for schematic and connector information.

Normal Operation and Fault Conditions

Refer to: 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 (manual transmission only).

Visual Inspection and Diagnostic Pre-checks

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

Scheme 3

Scheme 4

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 RETRIEVE DTCS Ignition ON. Using a diagnostic scan tool, perform self-tests for: BCM PCM TCM Are any Diagnostic Trouble Codes (DTCs) present? Yes: For all Transmission Control Module (TCM) Diagnostic Trouble Codes (DTCs), REFER to: Automatic Transmission ( «AUTOMATIC TRANSMISSION»(/ford/focus-st/iii-2012-2015/remont/automatic-trans/#automatic-dual-clutch-transaxle-dct-powershift-dps66dct250) ). For PCM Diagnostic Trouble Code (DTC) P0850, GO to A6 For Diagnostic Trouble Code (DTC) P0851, GO to A10 For all other Powertrain Control Module (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-duratec-he) ). For Body Control Module (BCM) Diagnostic Trouble Code (DTC) P0833:23, GO to A26 No: GO to A3
3. A3 CHECK THE PCM (POWERTRAIN CONTROL MODULE) ENGINE CRANKING (ENG_CRANK) PID Using a diagnostic scan tool, view the Powertrain Control Module (PCM) Parameter Identifications (PIDs). For automatic transmission, make sure the transmission is in PARK or NEUTRAL. For manual transmission, fully apply the clutch pedal. Using a diagnostic scan tool, view the Powertrain Control Module (PCM) Parameter Identification (PID) ENG_CRANK, while holding the key in the START position. Does the PCM Parameter Identification (PID) ENG_CRANK change from Inactive to Active? Yes: For automatic transmission, GO to A6 For manual transmission, GO to A12 No: GO to A4
4. A4 CHECK THE CRANK DETECT CIRCUIT FOR VOLTAGE AT THE PCM (POWERTRAIN CONTROL MODULE) Ignition OFF. Disconnect PCM C175B. While holding the key in the START position, measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-17 - Is the voltage greater than 11 volts? Yes: GO to A28 No: GO to A5
5. A5 CHECK THE IGNITION SWITCH Ignition OFF. Carry out the Ignition Switch Component Test. REFER to OEM COMPONENT TESTING for schematic and connector information. Did the ignition switch pass the component test? Yes: REPAIR circuit CDC12 (BU/YE) for an open. No: INSTALL a new ignition switch. REFER to: Ignition Switch ( «IGNITION SWITCH»(/ford/focus-st/iii-2012-2015/remont/steering-column-switches/#steering-column-switches-except-electric) ).
6. A6 CHECK THE TCM (TRANSMISSION CONTROL MODULE) TR_CRANK PID Using a diagnostic scan tool, while viewing the TCM Parameter Identification (PID) TR_CRANK, place the gear selector in PARK and then NEUTRAL. Does the TCM Parameter Identification (PID) TR_CRANK read YES in both positions? Yes: GO to A7 No: Diagnose the TR sensor, REFER to: Automatic Transmission ( «AUTOMATIC TRANSMISSION»(/ford/focus-st/iii-2012-2015/remont/automatic-trans/#automatic-dual-clutch-transaxle-dct-powershift-dps66dct250) ).
7. A7 CHECK THE PCM (POWERTRAIN CONTROL MODULE) IN_GEAR PID Using a diagnostic scan tool, view the Powertrain Control Module (PCM) Parameter Identifications (PIDs). While observing the Powertrain Control Module (PCM) Parameter Identification (PID) IN_GEAR, place the gear selector in PARK and then NEUTRAL. Does the Parameter Identification (PID) read No in both positions? Yes: GO to A3 No: GO to A8
8. A8 CHECK THE PARK/NEUTRAL CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect PCM C175B. Disconnect TCM C1750A. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 - Is any voltage present? Yes: REPAIR the circuit. No: GO to A9
9. A9 CHECK THE PARK/NEUTRAL CIRCUIT FOR AN OPEN Ignition OFF. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 ohms C1750A-39 Is the resistance less than 3 ohms? Yes: GO to A10 No: REPAIR the circuit.
10. A10 CHECK FOR DTCS WITH TCM (TRANSMISSION CONTROL MODULE) DISCONNECTED Ignition OFF. Disconnect TCM C1750A. Ignition ON. Using a diagnostic scan tool, perform PCM self-test. Was Diagnostic Trouble Code (DTC) P0851 retrieved on-demand during self-test? Yes: GO to A11 No: GO to A29
11. A11 CHECK THE PARK/NEUTRAL CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect PCM C175B. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 ohms - Is the resistance greater than 10, 000 ohms? Yes: GO to A28 No: REPAIR the circuit.
12. A12 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 A11 No: GO to A23
13. A13 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 «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 For automatic transmission, make sure the transmission is in PARK or NEUTRAL. For manual transmission, fully apply the clutch pedal. While holding the key in the START position, observe the test light. Does the test light illuminate when the key is in the START position? Yes: GO to A14 No: GO to A21
14. A14 CHECK THE VOLTAGE TO THE STARTER RELAY Measure: Positive Lead Measurement / Action Negative Lead BJB starter relay pin 3 - Is the voltage greater than 11 volts? Yes: GO to A15 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.
15. A15 CHECK THE STARTER MOTOR OPERATION AT THE STARTER RELAY Ignition OFF. With the transmission in PARK or NEUTRAL, momentarily connect a fused jumper wire: 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 A16
16. A16 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 A17 No: CLEAN or INSTALL new negative battery cables as necessary. REFER to: Battery Cables - 2.0L Duratec-HE ( «BATTERY CABLES - 2.0L DURATEC-HE»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) ).
17. A17 CHECK THE STARTER MOTOR GROUND Measure: Positive Lead Measurement / Action Negative Lead Starter motor case Is the voltage greater than 11 volts? Yes: GO to A18 No: CLEAN the starter motor mounting flange and MAKE SURE the starter motor is correctly mounted.
18. A18 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 A19 No: INSTALL a new positive battery cable. REFER to: Battery Cables - 2.0L Duratec-HE ( «BATTERY CABLES - 2.0L DURATEC-HE»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) ).
19. A19 CHECK THE STARTER MOTOR FOR CORRECT OPERATION With the transmission in PARK or NEUTRAL, momentarily connect a fused jumper wire: Did the starter engage and the engine crank? Yes: GO to A20 No: INSTALL a new starter motor. REFER to: «Starter Motor»(/ford/focus-st/iii-2012-2015/remont/starter/#starting-system-20l-duratec-he) .
20. A20 CHECK FOR START INPUT AT THE STARTER Connect BJB starter relay. Disconnect Starter solenoid C197B. NOTE: For manual transmission, fully apply the clutch pedal. While holding the key in the START position, 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.
21. A21 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CIRCUITS FOR A SHORT TO GROUND Ignition OFF. Disconnect ACM C240A. Disconnect PCM C175B. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-9 ohms - C175B-11 ohms - Are the resistances greater than 10, 000 ohms? Yes: GO to A22 No: REPAIR the affected circuit.
22. A22 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CIRCUITS FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-9 ohms BJB start relay pin 2 C175B-11 ohms BJB start relay pin 1 Are the resistances less than 3 ohms? Yes: GO to A28 No: REPAIR the affected circuit.
23. A23 CHECK THE CPP (CLUTCH PEDAL POSITION) SWITCH Ignition OFF. Disconnect PCM C175B. While fully applying the clutch pedal, measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 ohms - Is the resistance less than 3 ohms? Yes: GO to A28 No: GO to A24
24. A24 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 A25 No: REPAIR the circuit.
25. A25 CHECK THE CPP (CLUTCH PEDAL POSITION) SWITCH CIRCUIT FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 ohms C257-1 Is the resistance less than 3 ohms? Yes: INSTALL a new 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-duratec-he) ). No: REPAIR the circuit.
26. A26 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 CPP switch disconnected? Yes: GO to A27 No: INSTALL a new 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-duratec-he) ).
27. A27 CHECK THE CLUTCH BOTTOM TRAVEL CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect BCM C2280A. Disconnect PCM C175B. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 ohms - Is the resistance greater than 10, 000 ohms? Yes: GO to A30 No: REPAIR the circuit.
28. A28 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-duratec-he__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.
29. A29 CHECK FOR CORRECT TCM (TRANSMISSION CONTROL MODULE) OPERATION Ignition OFF. Disconnect and inspect all TCM 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 TCM 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 TCM. REFER to: Transmission Control Module (TCM) ( «TRANSMISSION CONTROL MODULE (TCM)»(/ford/focus-st/iii-2012-2015/remont/automatic-trans/#automatic-dual-clutch-transaxle-dct-powershift-dps66dct250__transmission-control-module-tcm) ). 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.
30. A30 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 C175B. 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.

Engine Does Not Crank (With Push Button Start)

REFER to OEM WIRING DIAGRAMS for schematic and connector information.

REFER to: Starting System - Overview .

DTC FAULT TRIGGER CONDITIONS

1. Battery
2. Battery cables
3. Starter motor
4. BJB starter relay
5. Inspect the CPP switch (manual transmission only).

1. Inspect high current BJB connections.
2. Verify the BJB fuse 13 (30A).
3. Verify the BCM fuse 78 (5A).
4. Inspect the CPP switch (manual transmission only).

Scheme 5

Scheme 6

Scheme 7

Scheme 8

1. B1 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 B2 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. B2 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)»(/ford/focus-st/iii-2012-2015/remont/door-locks-anti-theft-systems/#passive-anti-theft-system-push-button-start-except-electric) (Passive Anti-Theft System (PATS) - Push Button Start) . No: GO to B3
3. B3 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) OPERATION Observe the Instrument Panel Cluster (IPC) operation while pressing the ignition switch - push button start. Do some indicators in the Instrument Panel Cluster (IPC) illuminate? Yes: GO to B5 No: GO to B4
4. B4 CHECK FOR COMMUNICATION WITH THE SCAN TOOL Ignition ON. Using a diagnostic scan tool, perform the Network Test. Does the Body Control Module (BCM), Instrument Panel Cluster (IPC) and Remote Function Actuator (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. B5 RETRIEVE DTCS Ignition ON. Using a diagnostic scan tool, perform self-tests for: TCM (if equipped). RFA BCM PCM Were Diagnostic Trouble Codes (DTCs) retrieved on-demand during self-test? Yes: For all Transmission Control Module (TCM) Diagnostic Trouble Codes (DTCs), REFER to: Automatic Transmission ( «AUTOMATIC TRANSMISSION»(/ford/focus-st/iii-2012-2015/remont/automatic-trans/#automatic-dual-clutch-transaxle-dct-powershift-dps66dct250) ). For all Remote Function Actuator (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 Body Control Module (BCM) Diagnostic Trouble Code (DTC) P0833:23, GO to B31 For all other Body Control Module (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 Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) P0850, GO to B9 For Diagnostic Trouble Code (DTC) P0851, GO to B13 For all other Powertrain Control Module (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-duratec-he) ). No: For automatic transmission, GO to B6 For manual transmission, GO to B15
6. B6 CHECK THE OPERATION OF THE STOPLAMPS While observing the stoplamps, apply the brake pedal. Do the stoplamps illuminate? Yes: GO to B7 No: Diagnose All the Stoplamps are inoperative. REFER to: Stoplamps ( «STOPLAMPS»(/ford/focus-st/iii-2012-2015/remont/exterior-lights/#exterior-lighting-system-except-electric) ).
7. B7 CHECK THE PCM (POWERTRAIN CONTROL MODULE) BRAKE PEDAL POSITION (BOO1) Using a diagnostic scan tool, view the PCM Parameter Identification (PID) BOO1 while applying the brake pedal. Does the Parameter Identification (PID) read On? Yes: GO to B10 No: GO to B8
8. B8 CHECK THE BPP (BRAKE PEDAL POSITION) SWITCH CIRCUIT FOR VOLTAGE AT THE PCM (POWERTRAIN CONTROL MODULE) Ignition OFF. Disconnect PCM C175B. While applying the brake pedal, measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-30 - Is the voltage greater than 11 volts? Yes: GO to B33 No: REPAIR the circuit.
9. B9 CHECK THE TCM (TRANSMISSION CONTROL MODULE) TR_CRANK PID Ignition ON. Using a diagnostic scan tool, view the TCM Parameter Identification (PID) TR_CRANK, place the gear selector in PARK and then NEUTRAL. Does the TCM Parameter Identification (PID) TR_CRANK read YES in both positions? Yes: GO to B10 No: Diagnose the TR sensor, REFER to: Automatic Transmission ( «AUTOMATIC TRANSMISSION»(/ford/focus-st/iii-2012-2015/remont/automatic-trans/#automatic-dual-clutch-transaxle-dct-powershift-dps66dct250) g).
10. B10 CHECK THE PCM (POWERTRAIN CONTROL MODULE) IN_GEAR PID Using a diagnostic scan tool, while viewing the Powertrain Control Module (PCM) Parameter Identification (PID) IN_GEAR, place the gear selector in PARK and then NEUTRAL. Does the Parameter Identification (PID) read No in both positions? Yes: GO to B16 No: GO to B11
11. B11 CHECK THE PARK/NEUTRAL CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect PCM C175B. Disconnect TCM C1750A. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 - Is any voltage present? Yes: REPAIR the circuit. No: GO to B12
12. B12 CHECK THE PARK/NEUTRAL CIRCUIT FOR AN OPEN Ignition OFF. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 ohms C1750A-39 Is the resistance less than 3 ohms? Yes: GO to B13 No: REPAIR the circuit.
13. B13 CHECK FOR DTC WITH TCM (TRANSMISSION CONTROL MODULE) DISCONNECTED Ignition OFF. Disconnect TCM C1750A. Ignition ON. Using a diagnostic scan tool, perform Powertrain Control Module (PCM) self-test. Was Diagnostic Trouble Code (DTC) P0851 retrieved on-demand during self-test? Yes: GO to B14 No: GO to B34
14. B14 CHECK THE PARK/NEUTRAL SWITCH CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect PCM C175B. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 ohms - Is the resistance greater than 10, 000 ohms? Yes: GO to B33 No: REPAIR the circuit.
15. B15 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 B16 No: GO to B28
16. B16 CHECK THE PCM (POWERTRAIN CONTROL MODULE) ENGINE CRANKING (ENG_CRANK) PID Make sure the transmission is in PARK or NEUTRAL. Using a diagnostic scan tool, while viewing the Powertrain Control Module (PCM) Parameter Identification (PID) ENG_CRANK, press the ignition switch - push button start and the brake pedal. Does the Parameter Identification (PID) change from Inactive to Active? Yes: GO to B17 No: GO to B27
17. B17 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 «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 PARK or NEUTRAL. While pressing the ignition switch - push button start and the brake pedal, observe the test light. Does the test light illuminate when the ignition switch - push button start and brake pedal are pressed? Yes: GO to B18 No: GO to B25
18. B18 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: GO to B19 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.
19. B19 CHECK THE STARTER MOTOR OPERATION AT THE STARTER RELAY Ignition OFF. Make sure the transmission is in PARK or 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 B20
20. B20 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 B21 No: CLEAN or INSTALL new negative battery cables as necessary. REFER to: Battery Cables - 2.0L Duratec-HE ( «BATTERY CABLES - 2.0L DURATEC-HE»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) ).
21. B21 CHECK THE STARTER MOTOR GROUND Measure: Positive Lead Measurement / Action Negative Lead Starter motor case Is the voltage greater than 11 volts? Yes: GO to B22 No: CLEAN the starter motor mounting flange and MAKE SURE the starter motor is correctly mounted.
22. B22 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 B23 No: INSTALL a new positive battery cable. REFER to: Battery Cables - 2.0L Duratec-HE ( «BATTERY CABLES - 2.0L DURATEC-HE»(/ford/focus-st/iii-2012-2015/remont/charging-system/#battery-mounting-and-cables-except-electric) ).
23. B23 CHECK THE STARTER MOTOR FOR CORRECT OPERATION Ignition OFF. With the transmission in PARK or NEUTRAL, momentarily connect a fused jumper wire: Positive Lead Measurement / Action Negative Lead C197A-1 ("B" terminal) C197B-1 ("S" terminal) Did the starter engage and the engine crank? Yes: GO to B24 No: INSTALL a new starter motor. REFER to: «Starter Motor»(/ford/focus-st/iii-2012-2015/remont/starter/#starting-system-20l-duratec-he) .
24. B24 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 brake or 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.
25. B25 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CIRCUITS FOR A SHORT TO GROUND Ignition OFF. Disconnect ACM C240A. Disconnect PCM C175B. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-9 ohms - C175B-11 ohms - Are the resistances greater than 10, 000 ohms? Yes: GO to B26 No: REPAIR the affected circuit.
26. B26 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CIRCUITS FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-9 ohms BJB start relay pin 2 C175B-11 ohms BJB start relay pin 1 Are the resistances less than 3 ohms? Yes: GO to B33 No: REPAIR the affected circuit.
27. B27 CHECK THE CRANK DETECT CIRCUIT FOR VOLTAGE AT THE PCM (POWERTRAIN CONTROL MODULE) Ignition OFF. Disconnect PCM C175B. While pressing the ignition switch - push button start, measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-17 - Is the voltage greater than 11 volts? Yes: GO to B33 No: REPAIR the circuit.
28. B28 CHECK THE CPP (CLUTCH PEDAL POSITION) SWITCH Ignition OFF. Disconnect PCM C175B. While fully applying the clutch pedal, measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 ohms - Is the resistance less than 3 ohms? Yes: GO to B33 No: GO to B29
29. B29 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 B30 No: REPAIR the circuit.
30. B30 CHECK THE CPP (CLUTCH PEDAL POSITION) SWITCH CIRCUIT FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-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-duratec-he) ). No: REPAIR the circuit.
31. B31 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 B32 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-duratec-he) ).
32. B32 CHECK THE CLUTCH BOTTOM TRAVEL CIRCUIT FOR A SHORT TO GROUND Ignition OFF. Disconnect BCM C2280A. Disconnect PCM C175B. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-13 ohms - Is the resistance greater than 10, 000 ohms? Yes: GO to B35 No: REPAIR the circuit.
33. B33 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-duratec-he__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.
34. B34 CHECK FOR CORRECT TCM (TRANSMISSION CONTROL MODULE) OPERATION Ignition OFF. Disconnect and inspect all TCM 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 TCM 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 TCM. REFER to: Transmission Control Module (TCM) ( «TRANSMISSION CONTROL MODULE (TCM)»(/ford/focus-st/iii-2012-2015/remont/automatic-trans/#automatic-dual-clutch-transaxle-dct-powershift-dps66dct250__transmission-control-module-tcm) ). 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.
35. B35 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 C175B. 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 9

1. C1 CHECK THE STARTER MOUNTING Inspect the starter mounting bolts for looseness. Is the starter motor mounted correctly? Yes: GO to C2 No: INSTALL the starter motor correctly. REFER to: «Starter Motor»(/ford/focus-st/iii-2012-2015/remont/starter/#starting-system-20l-duratec-he) .
2. C2 CHECK FOR ENGINE NOISE Ignition OFF. Connect a remote starter switch between the starter solenoid C197A-1 ("B" terminal) and C197B-1 ("B" terminal). 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»(/ford/focus-st/iii-2012-2015/remont/starter/#starting-system-20l-duratec-he__starter-motor-drive-gear-and-flywheel) . No: REFER to: Engine ( «ENGINE»(/ford/focus-st/iii-2012-2015/remont/mechanical/#engine-20l-duratec-he) ) to continue diagnosis.

P0615

REFER to STARTING SYSTEM for schematic and connector information.

Without push button start

REFER to: Starting System - without Push Button Start .

With push button start

REFER to: Starting System - with Push Button Start .

DTC FAULT TRIGGER CONDITIONS

1. Wiring, terminals or connectors
2. PCM

1. Verify the BJB fuse 13 (30A).

PINPOINT TEST D : P0615

1. D1 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CIRCUITS FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect ACM C240A. Disconnect PCM C175B. Disconnect BJB starter relay. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-9 - C175B-11 - Is any voltage present? Yes: REPAIR the affected circuit. No: GO to D2
2. D2 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 C175B-9 ohms - C175B-11 ohms - Are the resistances greater than 10, 000 ohms? Yes: GO to D3 No: REPAIR the affected circuit.
3. D3 CHECK THE PCM (POWERTRAIN CONTROL MODULE) STARTER RELAY CIRCUITS FOR AN OPEN Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-9 ohms BJB start relay pin 2 C175B-11 ohms BJB start relay pin 1 Are the resistances less than 3 ohms? Yes: GO to D4 No: REPAIR the affected circuit.
4. D4 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 D5 No: INSTALL a new BJB starter relay.
5. D5 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-duratec-he__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.

P2531 or P2532

REFER to ELECTRONIC ENGINE CONTROLS for schematic and connector information.

When the ignition is in the ON or START mode, the BCM supplies ground for the coil (control) side of the ignition relay. The energized ignition relay supplies battery voltage to the BJB, the PCM and multiple components through the ignition relay output circuit. The BCM sends ignition mode information via the High Speed Controller Area Network (HS-CAN).

DTC FAULT TRIGGER CONDITIONS

1. Ignition switch (without Push button start)
2. Ignition switch - push button start (with Push button start)
3. Wiring, terminals or connectors
4. PCM

1. Verify the BCM fuse 78 (5A).
2. Verify the BJB fuse 38 (15A).

Scheme 10

1. E1 RETRIEVE DTCS Using a diagnostic scan tool, perform the BCM self-test. Using a diagnostic scan tool, perform PCM self-test. Record all Diagnostic Trouble Codes (DTCs). Is PCM DTC P2532 present? Yes: For DTC P2532, GO to E2 No: For all Body Control Module (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 DTC P2531, GO to E4 . For all other Powertrain Control Module (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-duratec-he) ).
2. E2 CHECK THE IGNITION RELAY OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect PCM C175B. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-15 - Is any voltage present? Yes: GO to E3 No: GO to E5
3. E3 CHECK THE IGNITION RELAY OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE WITH IGNITION RELAY REMOVED Ignition OFF. Remove the BJB starter relay. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-15 - Is any voltage present? Yes: REPAIR the circuit. REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. No: INSTALL a new ignition relay.
4. E4 CHECK THE IGNITION RELAY OUTPUT CIRCUIT FOR AN OPEN Ignition OFF. Disconnect PCM C175B. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-15 - Is the voltage greater than 11 volts? Yes: GO to E5 No: VERIFY BJB fuse 38 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short.
5. E5 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-duratec-he__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.

P2534 or P2535

REFER to STARTING SYSTEM for schematic and connector information.

When the ignition is turned to the START position or 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

1. Ignition switch (without Push button start)
2. Ignition switch - push button start (with Push button start)
3. Wiring, terminals or connectors
4. PCM

1. Verify the BCM fuse 78 (5A).

Scheme 11

1. F1 CHECK FOR PCM (POWERTRAIN CONTROL MODULE) DTCS Ignition ON. Using a diagnostic scan tool, perform Powertrain Control Module (PCM) self-test. Is Powertrain Control Module (PCM) Diagnostic Trouble Code (DTC) P2535 present? Yes: GO to F2 No: For Diagnostic Trouble Code (DTC) P2534, GO to F4 For all other Powertrain Control Module (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-duratec-he) ).
2. F2 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH THE PCM (POWERTRAIN CONTROL MODULE) DISCONNECTED Ignition OFF. Disconnect PCM C175B. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-17 - Is any voltage present? Yes: GO to F3 No: GO to F10
3. F3 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO VOLTAGE WITH THE IGNITION SWITCH OR IGNITION SWITCH - PUSH BUTTON START DISCONNECTED Ignition OFF. Disconnect Ignition switch C250 (without push button start). Disconnect Ignition switch - push button start C2195 (with push button start). Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-17 - Is any voltage present? Yes: Without push button start, GO to F10 With push button start, GO to F4 No: INSTALL a new ignition switch or ignition switch - push button start. Without Push button start, REFER to: Ignition Switch ( «IGNITION SWITCH»(/ford/focus-st/iii-2012-2015/remont/steering-column-switches/#steering-column-switches-except-electric) ). With 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. F4 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 C175B-17 - Is any voltage present? Yes: GO to F5 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. F5 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 C175B-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) ).
6. F6 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO GROUND WITH THE PCM (POWERTRAIN CONTROL MODULE) DISCONNECTED Ignition OFF. Disconnect PCM C175B. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-17 ohms - Is the resistance greater than 10, 000 ohms? Yes: GO to F10 No: GO to F7
7. F7 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO GROUND WITH THE IGNITION SWITCH OR IGNITION SWITCH - PUSH BUTTON START DISCONNECTED Disconnect Ignition switch C250 (without push button start). Disconnect Ignition switch - push button start C2195 (with push button start). Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-17 ohms - Is the resistance greater than 10, 000 ohms? Yes: Without push-button start, GO to F10 With push-button start, GO to F8 No: INSTALL a new ignition switch or ignition switch - push button start. Without Push button start, REFER to: Ignition Switch ( «IGNITION SWITCH»(/ford/focus-st/iii-2012-2015/remont/steering-column-switches/#steering-column-switches-except-electric) ). With 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) ).
8. F8 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO GROUND WITH THE RFA (REMOTE FUNCTION ACTUATOR) DISCONNECTED Disconnect RFA C4392D. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-17 ohms - Is the resistance greater than 10, 000 ohms? Yes: GO to F9 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) ).
9. F9 CHECK THE CRANK DETECT CIRCUIT FOR A SHORT TO GROUND WITH THE BCM (BODY CONTROL MODULE) DISCONNECTED Disconnect BCM C2280C. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-17 ohms - Is the resistance greater than 10, 000 ohms? 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) ).
10. F10 CHECK FOR CORRECT 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-duratec-he__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

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

PINPOINT TEST G : B10E5:11 OR B10E5:15

1. G1 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 G2 No: If DTC B10E5:15 is present, GO to G3 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. G2 CHECK THE PCM (POWERTRAIN CONTROL MODULE) FOR A SHORT TO GROUND Ignition OFF. Disconnect PCM C175B. 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 G3 No: GO to G7
3. G3 CHECK THE PCM (POWERTRAIN CONTROL MODULE) WAKE-UP SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Ignition OFF. Disconnect BCM C2280A. Disconnect PCM C175B. Ignition ON. Measure: Click to display connectors Positive Lead Measurement / Action Negative Lead C175B-14 - Is any voltage present? Yes: REPAIR the circuit. No: GO to G4
4. G4 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 C175B-14 ohms - Is the resistance greater than 10, 000 ohms? Yes: GO to G5 No: REPAIR the circuit.
5. G5 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 C175B-14 ohms C2280A-32 Is the resistance less than 3 ohms? Yes: GO to G6 No: REPAIR the circuit.
6. G6 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. G7 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-duratec-he__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
• PASSIVE ANTI-THEFT SYSTEM (PATS) - SYSTEM OPERATION AND COMPONENT DESCRIPTION
• DIAGNOSTIC METHODS
• ELECTRONIC ENGINE CONTROLS
• BODY CONTROL MODULE (BCM)
• BATTERY
• AUTOMATIC TRANSMISSION
• POWERTRAIN CONTROL MODULE (PCM)
• TRANSMISSION CONTROL MODULE (TCM)
• COMMUNICATIONS NETWORK
• STOPLAMPS
• ENGINE
• BATTERY DRAIN CHECK
• FLYWHEEL
• FLEXPLATE
• JACKING AND LIFTING - OVERVIEW
• Pinpoint Test D
• Pinpoint Test B
• Starter Motor - Positive Circuit Test
• Starter Motor Drive Gear and Flywheel Ring Gear Inspection
• Starting System - without Push Button Start
• Starting System - with Push Button Start
• Starter Motor - Ground Circuit Test