Q-236R4 SVE BULLETIN SPECIAL VEHICLE ENGINEERING BODY BUILDERS ADVISORY SERVICE E-Mail via website: www.fleet.ford.com/truckbbas (click "Contact Us") Toll-free: (877) 840-4338 QVM Bulletin: Q-236R4 Date: 12 August, 2015 Revision Update Revision Date Q-236R4 Corrected torque rating for mobile mode, additional minor corrections. 23 June, 2016 2016 F-650/750 Stationary Elevated Idle Control Models Affected 2016 Model Year (MY) F-650/750 vehicles with 6.7L Diesel and 6.8L Gasoline Engines Purpose To explain changes and functions of the stationary elevated engine idle control (SEIC) for power take-off () and battery charge protect (BCP) applications. Contents: 1. Overview Page 1 2. 6.7L Diesel SEIC / BCP Page 4 3. 6.8L Gasoline SEIC Page 10 4. SEIC / General System Behavior Page 14 5. Appendix, additional notes Page 15 1. Overview Stationary Elevated Idle Control (SEIC) A power train control module (PCM) strategy that provides elevated engine speed to drive auxiliary commercial equipment such as hydraulic pumps, generators, air compressors; or maintain vehicle battery charge under extreme electrical demands. SEIC is standard in all PCM's for F-650/750 trucks. 6.7L diesel only - Spit shaft mode engages the transmission output shaft. Customer Access Wires for SEIC and VSO/CTO/PARK Signals Located in cabin, tagged and bundled under the driver s side dash behind data link connector. Pass-thru wires are in the same bundle. The final stage manufacturer or up-fitter is required to supply the customer interface equipment. Additional information in the "Circuit Descriptions" section. Transmission Power Take off () Gear and Port Available on F-650/750. Available for TorqShift 6-speed automatic transmission by ordering Transmission Power Take-Off Provision. The gear is direct-splined to the torque converter impeller. NEVER use any sealer, especially silicone-based, on the port gasket. Originator: BBAS Page 1 of 15 Date Issued: 08/12/15
TorqShift Automatic Transmission: The gear delivers up to 250 ft-lbs of torque (300ft-lbs diesel, see below) to the aftermarket. Typically, the aftermarket cannot use all this available torque, so contact the individual aftermarket supplier Customer Access Circuit / SEIC Wire Locations SEIC circuits, Customer Access Signal Circuits, Pass-Thru Wires. F650/750 Cabin / Instrument Panel Blunt-cut access wires for SEIC, "Customer Access" signal circuits for CTO, VS_OUT, TRO_P, TRO_N, and 2 pass-thru wires, are bundled together at the harness on the left hand side of the driver s foot well behind the data link connector. Blunt cut access wires for the 4 optional Upfitter Switches are also included in this bundle. SEIC, Pass-Thru Wires F650/750 Back of Cab or End of Frame Pass-Thru Wires The 2 blunt-cut pass-thru wires are found at pins 6 and 10 of the Body Builder Connector. The connector is located at either the back of cab or end of frame along the left hand frame rail, depending on vehicle options. See Body Builder Layout Book for complete pin out. Originator: BBAS Page 2 of 15 Date Issued: 08/12/15
Customer Accessible Signal Circuit Description F-650/750 6.8L Gasoline and 6.7L Diesel CUSTOMER ACCESS SIGNAL CIRCUITS - Found: Blunt-cut & taped, in Customer access harness under driver s side dash. Circuit Intent Wire Tag Description OUTPUT PARK-Only OUTPUT NEUTRAL-Only OUTPUT Vehicle Speed OUTPUT Engine Speed TROP TRON VSOUT CTO 6.7L Diesel - PCM Pin C1232T-20 Circuit No. CET22 Wire Color: Gray / Brown 6.8L Gasoline PCM Pin C175B-19 - An output from the PCM that indicates when the Transmission Range Sensor is indicating that the Transmission is in the Park Position. The Low Side driver (160mA max.) in the PCM will pull this output to ground when active (Transmission is in the PARK Position). To properly reference this output, the customer supplied external controller/device needs to pull this output up to with a 10K Ohm resistor. Thus when the output is active, the voltage at this output will be 0 volts. When this output is not active, the output will be pulled up to by the 10K Ohm pull up resistor. 6.7L Diesel - TCM Pin C1232T-24 Circuit No. CET21 Wire Color: Green / White 6.8L Gasoline PCM Pin C175B-43 -An output from the PCM that indicates when the Transmission Range Sensor is indicating that the Transmission is in the Neutral Position. The Low Side driver (160mA max.) in the PCM will pull this output to ground when active (Transmission is in the Neutral Position). To properly reference this output, the customer supplied external controller/device needs to pull this output up to with a 10K Ohm resistor. Thus when the output is active, the voltage at this output will be 0 volts. When this output is not active, the output will be pulled up to by the 10K Ohm pull up resistor 6.7L Diesel - PCM Pin C1232B-5 Circuit No. VMC05 Wire Color: Violet / Orange 6.8L Gasoline PCM Pin C175B-78 -An output from the PCM that provides 8000 pulses per mile signal with a 50% duty cycle. The low side driver in the PCM will switch the output off and on (off will allow the output to be pulled up close to ), (on will put the output to 0 volts). To properly reference this output, the customer supplied external controller/device needs to pull this output down to ground with a 10K Ohm resister. 6.7L Diesel - PCM Pin C1232B-10 Circuit No. CE913 Wire Color: Blue 6.8L Gasoline PCM Pin C175B-77 -An output from the PCM that indicates a Clean Tachometer Output to provide an indication of engine RPM. The low side driver in the PCM will switch the output off and on (off will allow the output to be pulled up close to ), (on will put the output to 0 volts), at a Frequency = ( (Engine RPM s * Number of cylinders) / 120), with a duty cycle of 50%. To properly reference this output, the customer supplied external controller/device needs to pull this output down to ground with a 10K Ohm resister. Park Brake Circuit no. CMC25 Wire Color: White/Violet Output Signal wire PASS-THRU Circuit No. CAC09 Wire Color: Brown / White PASS-THRU Circuit No. CAC10 Wire Color: White Battery Voltage Sources () F-650/750 6.8LGasoline and 6.7L Diesel Circuit Intent Wire Tag Description Ignition Hot-in- RUN/START Ford upfitter switches: Ign-Hot-ACC Aux-1 Aux-2 Aux-3 Aux-4 Circuit no. CBB35 Wire Color: Yellow / Gray A fused (F35 in PDB) circuit. Found: Under driver s side dash. [25-amp] Circuit No. CAC05 Wire Color: Yellow 16awg [25-amp] Circuit No. CAC06 Wire Color: Green / Brown 16awg [10-amp] Circuit No. CAC07 Wire Color: Violet / Green 20awg [15-amp] Circuit No. CAC08 Wire Color: Brown 20awg Found: Under driver s side dash. Originator: BBAS Page 3 of 15 Date Issued: 08/12/15
2. Stationary Elevated Idle Control for 6.7L Diesel, Mobile, Splitshaft, and Battery Charge Protect 6.7L Product Descriptions / Special Situations SEIC Intended to be commanded ONLY by applying battery voltage to certain customer-access blunt-cut wire circuits, and adding a target-speed resistor, and is only available when the vehicle road speed signal is zero. Includes a circuit which changes from open-circuit to ground when enablers are met that may be used to turn on an indicator lamp while providing battery power to an aftermarket clutch or solenoid. Ramp rates are fixed and cannot be altered by the customer. Minimum engine speed is 900 rpm. Maximum engine speed is 3,000 rpm. Typical SEIC Sequence for TorqShift Initiating SEIC by applying battery voltage to the SEIC- wire immediately commands the PCM to first look for enabling conditions, such as vehicle gearshift selector in PARK (or NEUTRAL), engine at base idle speed of about 650 rpm, etc. A complete list of enablers is provided in the "SEIC Enable/Disable Conditions" section of this bulletin. Once enablers are satisfied then the following takes place: 1. Command is sent to boost hydraulic line pressure in the transmission about 20-30 psi, which is used by the aftermarket supplier to hold their clutch. 2. Command is sent to increase engine speed to 900 rpm and when transmission is ready, ramps to target speed using a resistor. 3. The low-side driver circuit changes from open-circuit to ground. If the up-fitter uses the circuit wiring offered in this bulletin then this will provide battery voltage to the aftermarket solenoid to engage the. 4. Engine speed increases to the target and hydraulic line pressure will increase to a minimum of 150 psi at 900 rpm. 6.7L Operating Modes Stationary, Mobile, Split Shaft and Battery Charge Protect modes are supported on 6.7L diesel. Stationary mode -operates in Park at elevated engine speed. The maximum load at the transmission gear is 300ft-lbs for vehicles built after January 5, 2016 (VIN #GDA03590 / Rotation #2186), and 250ft-lbs for all vehicles built prior to this. Note: that there is no procedure to upgrade a vehicle built with the 250ft-lbs rating. Mobile Mode -operates in all gears and all vehicle speeds. The engine idle speed is slightly elevated, but peak engine speed is not limited beyond normal operating ranges. An additional rev limiter may be required to prevent over speed damage to attached pumps and equipment. The maximum load allowable for mobile mode is 150 ft-lbs (200ft-lbs after 01/05/16) at the transmission gear. If the feature is used for extended periods of time without vehicle movement it is recommended to switch to Stationary Mode. Split Shaft Mode To install Split-Shaft mode, wire according to the diagram shown on page 7. Select elevated idle speed by installing a resistor (which provides voltage to RPM input) as indicated in the wiring diagram. Split-Shaft mode requires that supply voltage (nominal 12vdc) be applied to both the RS1 and RS2 circuits. Split Shaft Engagement procedure: 1) Ensure that engine is running and engine coolant temperature is above 20 F. 2) Apply park brake. 3) Disconnect vehicle drive train (transmission in NEUTRAL, 4x4 DISENGAGED) and engage load. 4) With foot off both the service brake and accelerator pedals, turn Split-Shaft on. 5) While pressing the service brake, shift transmission into drive. 6) The system will shift the transmission into 4 th gear, lock the converter and then ramp up to the target idle speed in a controlled manner. Release the service brake*. *If vehicle unexpectedly lurches or moves upon releasing service brake, immediately depress brake pedal and shift transmission into PARK or NEUTRAL to secure vehicle. Contact Upfitter immediately Originator: BBAS Page 4 of 15 Date Issued: 08/12/15
Battery Charge Protect (BCP): BCP CANNOT BE ACTIVE WHEN SEIC OR MODES ARE ACTIVE -When it is switched on the engine speed goes immediately to 600. From this state, the PCM uses battery voltage as well as ambient air temp., engine oil temperature information to raise engine speed higher to maintain a certain battery charge. Maximum engine speed in BCP mode is 1200 rpm. Loss of an operating condition after BCP is engaged will require the BCP switch to be cycled before BCP will re-engage. Auto Entry: The BCP and Mobile operation modes allow to engage automatically once the engine started provided the input switch is left in the on position prior to starting the engine. However, loss of an operating condition after is initially engaged will require the switch to be cycled before will re-engage. Additional notes: Adaptive Cooling This PCM strategy automatically restricts engine power when it senses an over-temperature condition, and may interrupt the SEIC- operation. Typically, the over-temperature condition it reacts to will also show up on the temperature gage on the instrument panel. Elevated engine speed, typical of SEIC operation, may help avoid Adaptive Cooling occurrence due to the resultant additional engine and transmission coolant flow. However, depending on the auxiliary power being demanded, 900 rpm may not be enough to prevent the power train from entering Adaptive Cooling mode, but 1500 rpm may. Input Resistor ALL modes (SEIC,, BCP) require usage of an input resistor. The resistor value may be obtained in table A. Table A- 6.7L Diesel SEIC Resistor Charts SEIC Mode Engine Target Speed (RPM) Resistor (Ohms) Voltage (volts) 900 54050 0.400 1000 35098 0.590 1200 19491 0.971 1400 12677 1.352 1600 8858 1.733 1800 6415 2.114 2000 4718 2.495 2200 3471 2.876 2400 2515 3.257 2600 1759 3.638 2800 1147 4.019 3000 641 4.400 Split-Shaft Mode Engine Target Resistor Speed (Ohms) (RPM) Voltage (volts) 700 54050 0.400 800 36247 0.574 1000 20795 0.922 1200 13810 1.270 1400 9830 1.617 1600 7258 1.965 1800 5460 2.313 2000 4132 2.661 2200 3111 3.009 2400 2301 3.357 2600 1644 3.704 2800 1099 4.052 3000 641 4.400 Mobile Mode Engine Target Speed (RPM) Resistor (Ohms) Voltage (volts) Minimum 750 (Commanded by throttle) 360 4.644269 ** Voltages are exact to achieve RPM shown. Resistors are standard 5% values (1 watt) and yield RPM values +/- 32rpm Originator: BBAS Page 5 of 15 Date Issued: 08/12/15
6.7L SEIC Circuit Descriptions All circuits lead back to pins on the PCM. F-650/750 Diesel Engine PCM Circuit Intent Wire Tag Description INPUT () INPUT () REQUEST1 REQUEST2 PCM Pin C1232B-6 Circuit No. CE912 Wire Color: Yellow / Green Applying vehicle battery voltage to this wire initiates SEIC Stationary Mode process. Signals TorqShift transmission to enter SEIC strategy. Verifies safety enablers. Turns off OBD and other emission-related monitoring. Elevates engine speed to target found at -RPM circuit. Invokes the relay circuit when safety enablers are met. Looks for the target engine speed requested at the _RPM circuit using a resistor or POT. PCM Pin C1232B-4 Circuit No. CE933 Wire Color: Blue / Orange Applying vehicle battery voltage to this wire initiates Mobile Mode. Signals TorqShift transmission to enter Live Drive mode. Verifies safety enablers. Turns off OBD and other emission-related monitoring. Invokes the relay when safety enablers are met. Still requires valid resistance on _RPM input for system to function INPUT () REQUEST1 REQUEST2 PCM Pin C1232B-6 Circuit No. CE912 Wire Color: Yellow / Green PCM Pin C1232B-4 Circuit No. CE933 Wire Color: Blue/Orange Applying vehicle battery voltage to both of these wires initiates Split-Shaft Mode. Signals TorqShift transmission to enter Split-Shaft mode. Verifies safety enablers. Turns off OBD and other emission-related monitoring. Elevates engine speed to target found at -RPM circuit. Invokes the RELAY circuit when safety enablers are met. OUTPUT _RELAY PCM Pin C1232B-11 Circuit No. CE326 Wire Color: Blue / White A low-side driver, changing from "open-circuit" to "ground" indicating that the engine is ready for the operation to begin and that a load may be applied. Intended for powering a indicator lamp, or turn on a relay coil (not to exceed 1 amp). LED lights require adding a resistor in series. INPUT (resistor) RPM PCM Pin C1232B-8 Circuit No. CE914 Wire Color: Green Add a resistor or potentiometer to obtain fixed or variable engine target speed. Combine in circuit with -VREF and -GND. Speed range available: 900 rpm to 3000 rpm (700 min RPM for split shaft operation). Reference Voltage REF PCM Pin C1232B-55 Circuit No. LE434 Wire Color: White / Brown A 5-volt reference, buffered against shorts to ground or power, used to complete the resistor circuit for engine speed selection. PCM Ground RTN PCM Pin C1232B-22 Circuit No. RE327 Wire Color: Gray / Violet A ground reference, buffered, used to complete the resistor circuit for engine speed selection. INPUT () BCP SW PCM Pin C1232B-21 Circuit No. CE926 Wire Color: Violet / Brown Applying vehicle battery voltage to this wire begins BCP. BCP regulates engine speed between 600 to1200 rpm to maintain required charge system voltage OUTPUT BCP LAMP PCM Pin C1232B-20 Circuit No. CE140 Wire Color: Brown A low-side driver, changing from "open-circuit" to "ground" indicating that BCP is in effect. Intended for powering an indicator lamp. Originator: BBAS Page 6 of 15 Date Issued: 08/12/15
Customer Supplied Components SEIC Switch Input for RPM Setpoint See resistor table * SEIC Relay SEIC Lamp Indication Choice LED - or - 1 K Lamp LOADS (12V) Alternate input for RPM Setpoint * Customer Supplied Components 5000 ohms potentiometer for RPM Setpoint WH/BN LE424 GN CE914 GY/VT RE327 IGNITION HOT-IN-RUN YE/GY CBB35 YE/GN CE912 _REQUEST_1 _REQUEST_2 WH/BN LE434 GN CE914 _VREF _RPM _SIGRTN 5VDC BU/WH CE326 _RELAY BCP_SW BCP_LAMP PCM REF 5VDC _RPM A/D SIGRTN SEIC and BCP Interface 2016 F-650/750 6.7L PCM Freq CTO BU CE913 A/D On/ Off TRO_N GN/WH CET21 D/O On/ Off TRO_P GY/BN CET22 D/O Freq VSOUT VT/OG VMC05 BCP Interface Ignition Hot-In- Run Customer Supplied Components BCP Switch VT/BN CE926 BCP_SW PCM 1 K LED BCP LED BN CE140 BCPIL Customer Access (Customer Supplied Components) External Controllers 10K 10K External Controller 10K External Controller 10K 10K 10K D/O Originator: BBAS Page 7 of 15 Date Issued: 08/12/15
Customer Supplied Components Mobile Mode Switch See resistor table SEIC Relay SEIC Lamp Indication Choice LED - or - 1 K Lamp LOADS (12V) SEIC Interface 2016 F-650/750 6.7L Mobile Mode IGNITION HOT-IN-RUN YE/GY CBB35 _REQUEST_1 BU/OG CE933 _REQUEST_2 WH/BN LE434 GN VE925 _VREF _RPM _SIGRTN 5VDC BU/WH CE326 _RELAY BCP_SW BCP_LAMP PCM A/D D/O D/O Customer Supplied Components Split Shaft Mode Switch See resistor table SEIC Relay SEIC Lamp Indication Choice LED - or - 1 K Lamp LOADS (12V) SEIC Interface 2016 F-650/750 6.7L Split Shaft Mode IGNITION HOT-IN-RUN YE/GY CBB35 YE/GN CE912 _REQUEST_1 BU/OG CE933 _REQUEST_2 WH/BN LE434 GN VE925 _VREF _RPM _SIGRTN 5VDC BU/WH CE326 _RELAY BCP_SW BCP_LAMP PCM A/D D/O D/O Originator: BBAS Page 8 of 15 Date Issued: 08/12/15
6.7L SEIC / BCP Enable/Disable Conditions Vehicle Conditions to Enable SEIC (all are required) Vehicle Conditions that Disable SEIC (any one required - See Note-1) SEIC Split Shaft Parking brake applied. Parking brake disengaged. Yes Yes No Foot off of service brake Depressing service brake Yes See note-2 No Vehicle in PARK (or NEURTRAL) Vehicle taken out of PARK (or NEUTRAL) Yes See note-2 No Foot off of accelerator pedal Accelerator pedal depressed Yes Yes No Vehicle speed is 0 mph (stationary) Vehicle speed is not 0 mph (stationary) Yes Yes No Engine at a stable base idle speed Yes Yes No Mobile Mode Transmission Oil Temp above 20 F Engine Coolant Temperature (ECT) 20 F minimum Transmission Oil Temperature (TOT) exceeds 240 F. Engine Coolant Temperature (ECT) exceeds 234 F Yes Yes Yes Yes Yes Yes Catalyst Temperature Limit Yes Yes Yes Note 1: A change-of-state at the -Request circuit is required to re-invoke SEIC. When a disabler is seen by the PCM the "-Indicator" circuit changes from "ground-source" to open-circuit", SEIC drops out, and the engine speed returns to base idle. To re-initiate SEIC the operator must turn off the aftermarket switch (removing command voltage to the -Mode circuit) and turn it back on again. Note 2: Please see Split Shaft Mode in Special Situations. Originator: BBAS Page 9 of 15 Date Issued: 08/12/15
3. Stationary Elevated Idle Control for 6.8L Gasoline Product Descriptions / Special Situations 6.8L Gasoline Engine SEIC Intended to be commanded ONLY by applying battery voltage to certain customer-access blunt-cut wire circuits, and adding a target-speed resistor, and is only available when the vehicle road speed signal is zero. Includes a link circuit which changes from open-circuit to ground when enablers are met, that may be used to turn on an indicator lamp, while providing battery power to an aftermarket clutch or solenoid. Ramp rates are fixed and cannot be altered by the customer. Maximum engine speed is 2400 rpm. Minimum engine speed Gas engine: 910 rpm approximately. Gas engine has a 900 rpm "stand-by" speed that it first goes to when SEIC is initiated to step it away from stall speed that it could dip to as load is applied. This is an unusable speed for any application. However, a resistor can be chosen that sets the useable target speed for carrying an auxiliary load to just above 900 rpm. This is mainly intended for applications using a FEAD-driven device like a clutch-pump, because the TorqShift torque converter cannot fully lock until 900 rpm engine speed rpm. Typical SEIC Sequence Initiating SEIC by applying battery voltage to the SEIC- wire immediately commands the PCM to first look for enabling conditions, such as vehicle gearshift selector in PARK (or NEUTRAL), engine at base idle speed, etc. A complete list of enablers is provided in the "SEIC Enable/Disable Conditions" section of this bulletin. Once enablers are satisfied then the following takes place: 1. Command is sent to boost hydraulic line pressure in the transmission to 150 psi, which is used by the aftermarket supplier to hold their clutch. 2. Command is sent to use a unique torque converter lock-up schedule for stationary. 3. Command is sent to increase engine speed to RPM determined by resistor (see Table B). 4. The low-side driver circuit changes from open-circuit to ground. If the up-fitter uses the circuit wiring offered in this bulletin then this will provide battery voltage to the aftermarket solenoid to engage the. 5. Engine speed increases to the target. The torque converter locks at 900 rpm and hydraulic line pressure increases with engine speed to a minimum of 150 psi at 900 rpm. 6.8L Special Situations Stationary Mode -operates in Park at elevated engine speed. The maximum load at the transmission gear is 250 ft-lbs. Mobile Mode (Not Available) -Mobile Mode is not available on F-650/750 with 6.8L gas engine. Split-Shaft (Not Available) -The Ford powertrain control strategy will not allow for this operation, whether using SEIC, or an aftermarket controller commanding engine speed directly at the foot pedal throttle or through the Ford data-link connector. The PCM will typically react by restricting power and engine speed, and possibly varying speed while searching for a solution. It may not do this immediately, but after days or a week of customer operation. It also will not guarantee a 1:1 transmission ratio command, typically required by split-shaft applications. Input Resistor ALL modes (SEIC, ) require usage of an input resistor. The resistor value may be obtained in Table B. Originator: BBAS Page 10 of 15 Date Issued: 08/12/15
Table B: 6.8L SEIC Resistor Chart 6.8L Gas Engine Engine Target Speed (RPM) Resistor (Ohms) Voltage (volts) Engine Target Speed (RPM) Resistor (Ohms) Voltage (volts) (Base) 100000 0.218 1500 4250 2.63 650 54400 0.4 1600 3430 2.89 750 30880 0.665 1700 2740 3.162 800 25320 0.787 1800 2168 3.426 900 17520 1.06 1900 1684 3.685 1000 13280 1.31 2000 1247 3.954 1100 10220 1.578 2100 891 4.203 1200 8130 1.837 2200 544 4.482 1300 6500 2.102 2300 255 4.741 0 1400 5220 2.375 2400 (closed circuit) 5 ** Voltages are exact to achieve RPM shown. Resistors are standard 5% values (1 watt) and yield RPM values +/- 32rpm 6.8L Circuit Descriptions for SEIC All circuits lead back to pins on the PCM. F-650/750 6.8L Gas Engine PCM Circuit Intent Wire Tag Description INPUT () _REQUEST1 PCM Pin C1551B-84 Circuit No. CE912 Wire Color: Yellow / Blue* (*Early Builds: Yellow / Green) Applying vehicle battery voltage to this wire begins SEIC process. Verifies safety enablers. Turns off OBD and other emission-related monitoring. Elevates engine speed to 900 rpm "standby" speed if it finds an "open-circuit" at _RPM Select. Invokes the Indicator circuit when safety enablers are met. Looks for the target engine speed requested at the _RPM Select circuit using a resistor or potentiometer. INPUT () _REQUEST2 PCM Pin C1551B -88 Circuit No. CE933 Wire Color: Blue / Orange Applying vehicle battery voltage to this wire signals the PCM that the load is being applied. OUTPUT _RELAY PCM Pin C1551B-98 Circuit No. CE326 Wire Color: Blue / White A low-side driver, changing from "open-circuit" to "ground" indicating that the engine is ready for the operation to begin, and that a load may be applied. Intended for powering a indicator lamp, or turn on a relay coil (not to exceed 1 amp). LED lights require adding a resistor in series. OUTPUT _VREF PCM Pin C1551B-52 Circuit No. LE424 Wire Color: Yellow / Green +5VDC reference voltage. INPUT (resistor) _RPM PCM Pin C1551B-85 Circuit No. CE914 Wire Color: Green Add a resistor or potentiometer to obtain fixed or variable engine target speed. Combine in circuit with _VREF (+5VDC). Speed range available: 650 rpm to 2400 rpm INPUT _SIGRTN PCM Pin C1551B-51 Circuit No. RE407 Wire Color: Yellow / Violet A ground reference, buffered, used to complete the potentiometer circuit for engine speed selection. Originator: BBAS Page 11 of 15 Date Issued: 08/12/15
Customer Supplied Components SEIC Switch Input for RPM Setpoint See resistor table * SEIC Relay SEIC Lamp Indication Choice LED - or - 1 K Lamp LOADS (12V) Alternate input for RPM Setpoint * Customer Supplied Components 5000 ohms potentiometer for RPM Setpoint YE/GN LE424 GN CE914 YE/VT RE407 IGNITION HOT-IN-RUN YE/GY CBB35 YE/BU CE912 _REQUEST_1 YE/GN LE424 GN CE914 _VREF 5VDC _RPM _SIGRTN BU/WH CE326 _RELAY BU/OG CE933 _REQUEST_2 PCM _VREF 5VDC _RPM A/D _SIGRTN PCM A/D D/O SEIC Interface 2016 F-650/750 6.8L Freq CTO On/ Off TRO_N On/ Off TRO_P Freq VSOUT BU CE913 GN/WH CET21 GY/BN CET22 VT/OG VMC05 Customer Access (Customer Supplied Components) External Controllers 10K 10K External Controller 10K External Controller 10K 10K 10K Originator: BBAS Page 12 of 15 Date Issued: 08/12/15
6.8L SEIC Enable/Disable Conditions Vehicle Conditions to Enable SEIC (all are required) Vehicle Conditions that Disable SEIC (any one required) Gas Engine Parking brake applied. Parking brake disengaged. Yes Foot off of service brake Depressing service brake Yes (See Note-1) Vehicle in PARK (or NEURTRAL) Vehicle taken out of PARK (or NEURTRAL) Yes Foot off of accelerator pedal Accelerator pedal depressed Yes Vehicle speed is 0 mph (stationary) Vehicle not stationary Yes Engine at a stable base idle speed Engine Coolant Temperature (ECT) 40 degree F minimum. Transmission Oil Temperature (TOT) Limit exceeds 240 degrees F. Engine Coolant Temperature Limit (ECT) Catalyst Temperature Limit Yes Yes (See Note-1) Yes (See Note-1) Yes (See Note-1) Note-1: A change-of-state at both the -REQUEST1 and "-REQUEST2" circuits is required to re-invoke SEIC. When a disabler is seen by the PCM, the " Relay" circuit changes from "ground-source" to open-circuit". After approximately 3 seconds SEIC drops out, returning the engine speed to base idle. The automatic transmission torque converter then unlocks as engine speed drops below 900 rpm. To re-initiate SEIC the operator must turn off the aftermarket switch (removing command voltage to both the -REQUEST1 and "-REQUEST2" circuits) and turn it back on again. Originator: BBAS Page 13 of 15 Date Issued: 08/12/15
4. SEIC / General System Behavior To guarantee full advertised torque capability at the automatic transmission gear and through the aftermarket clutch, the hydraulic line pressure serving the aftermarket clutch must be elevated. Applying battery voltage to the circuit is the signal to the transmission to enter SEIC strategy and these important functions. This applies to both stationary and mobile operations. If an SEIC disabler occurs in any mode: ALL engines will require a "change-of-state", meaning the operator is required to turn off voltage to the -Request circuit, and back on again to re-invoke SEIC and operation. If the Transmission Oil Temperature (TOT) sensor reaches 240 F, the system may disengage, preventing torque from being delivered to the aftermarket transmission. SEIC/ strategy function in the PCM is not affected by the loss of vehicle battery electrical power. SEIC Ramp Rate (fixed, not programmable): When first applying battery voltage to the circuit the PCM directs the engine to ramp to the initial target that it sees at the RPM circuit at a rate of 200 rpm/sec The SEIC system offers buffered PCM voltage and ground circuits to complete the resistor circuits for engine speed. If there is a high electrical demand on the chassis battery, such as from aftermarket inverters or generators, etc., the actual elevated idle engine speed may vary with that demand for any given resistance in the SEIC circuit. Correlation between engine speed and resistor values: The 2016 6.8L GAS application uses a 5 volt reference signal and ground for the _RPM input circuit. Normal base engine calibration allows approximately +/-50 rpm fluctuation. If any factory vehicle accessories are used during SEIC, e.g. a/c, defroster, etc., then that fluctuation may increase to approximately +/-100 rpm or more. The sudden loss of aftermarket hydraulic pressure during SEIC/ operation, like a ruptured hose, may send SEIC engine speed to near 3000 rpm. It is recommended that a hydraulic pressure switch linked to SEIC/ be added to disable SEIC/ when a hose ruptures. Because of a service brake circuit characteristic at engine-start, invoking SEIC may cause the diagnostic error code FFG_BOO to get flagged (recorded in the PCM). To avoid this, simply tap the service brake pedal sometime after engine-start and prior to invoking SEIC. Once the code is set, SEIC may not be available until it is erased. Originator: BBAS Page 14 of 15 Date Issued: 08/12/15
5. APPENDIX Vocabulary / Definitions Applications: Includes all forms of mechanical power, using the vehicle powertrain as the source, including transmission side-mounted, split-shaft, crankshaft, and FEAD-mounted clutch-pumps, air compressors, and generators. Clutch-Pump: A type of that is driven by the vehicle engine crankshaft through the FEAD pulley system. PCM: Powertrain Control Module FEAD: Front End Accessory Drive (belt and pulley drive system) SEIC: Stationary Elevated Idle Control VSO, VSOUT: Vehicle Speed Out see Customer Accessible Signal Description TPO: Throttle Position Out. Direct customer access not provided. ETC: Engine Coolant Temperature CTO: Clean Tach Out - Customer Accessible Signal Description : Vehicle Power Battery Voltage. BCP_IL / BCP_SW: Battery Charge Protection Illumination Lamp / Battery Charge Protection Switch Intermittent Duty Usage: 5 minutes out of a 15 minute period or less of continuous operation. Continuous Duty Usage: Greater than 5 minutes out of a 15 minute period of continuous operation. Change-of-State: Part of the SEIC strategy. If any condition is met that disables SEIC, the operator is required to turn the switch OFF and back ON again before SEIC will allow elevated idle to return. TRO_N, TRO_P: Transmission Range Output, indicating NEUTRAL ONLY, or PARK-ONLY BCM: Body Control Module, located at lower passenger-side of instrument panel NOTE 1: SOME EARLY BUILD 2016 6.8L GASOLINE F650/750 VEHICLES HAVE 2 IDENTICALLY COLORED WIRES FOR, WHICH ARE LOCATED IN THE BLUNT CUT HARNESS UNDER THE DRIVER SIDE DASH. THEY ARE YELLOW W/GREEN STRIPES. USE A VOLTMETER TO IDENTIFY WHICH CIRCUIT YOU NEED. One wire has 0V to ground (PCM Pin C1551B-84 Circuit No. CE912) One has +5V to ground (_VREF, PCM Pin C1551B-52 Circuit No. LE424) Circuit number CE912 will be changing to Yellow / Blue in later production. NOTE 2: EARLY BUILD 2016 6.8L GASOLINE F650/750 VEHICLES (built before 10/22/15) HAVE AN INCORRECTLY PINNED CUSTOMER ACCESS CIRCUIT. CIRCUIT CE326 IS PINNED IN PCM CONNECTOR C175B PIN 96. THIS CIRCUIT SHOULD BE LOCATED AT PIN 98. SYMMS: 6.8L gas vehicles built before October 22, 2015 and not entering mode due to circuit CE326 not going to ground when all enabling conditions are met. CORRECTIVE ACTION: Upfitters and body builders who have a 6.8L gas vehicle built before October 22nd and find that SEIC is exhibiting the symptoms above are advised to contact their local Ford Service center for corrective action per TSB 15-0180. The dealer will be able to determine if this TSB is applicable to the vehicle. Vehicles built after Octo10/22/15 will have this circuit in the correct PCM connector cavity. Reference: SVE Bulletin Q-241 Originator: BBAS Page 15 of 15 Date Issued: 08/12/15