Introduction
APC Module Display and Key Description
System Checkout
Enabling/Disabling Functions and Station Programming
RPM Control Usage
RPM Memory Re-Programming
Charge Protection Usage
Alternative RPM Memory Re-Programming and Ramp Rate Re-Programming
Diagnostics
Installation Instructions For ACPM Kit
APC Module Usage
This kit provides adaptive vehicle "Charge Protection," selectable
fixed elevated idle operation, and/or "manual" RPM control.
This kit is compatible with IN-CAB ONLY mounting of the operator
interface Auxiliary Powertrain Control Module (APC) Module). A
user programming option allows for deselection of any of the
functions.
NOTE: If "power up" RPM control is programmed, elevated idle will
occur within a few seconds after the below enabling interlocks are
met.
| Features |
Specifications/Display |
| Enabling interlocks |
- Parking brake engaged
- Clutch engaged (foot off) or vehicle in PARK
- Service Brake off
- Foot off accelerator
- Brake lights connected and functional
|
| Adaptive "Charge Protection" |
|
| Minimum activation RPM for charge
protection |
|
| Maximum charge rate |
|
| Selectable idle operation with
closed-loop engine speed control |
|
| Programmable RPM memories |
|
| Programmable engine speed "up" ramps |
|
| Minimum programmable PRM |
|
| Maximum programmable RPM |
|
| Manual RPM control |
- Via slow and fast up and
down switches
|
| Multiple means of returning to idle |
- Press brake or clutch pedal
- Release parking brake
- Take vehicle out of PARK
- Deselect APC module function
- Turn off power to APC module
|
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NOTE: Before programming the system, install module per separate
installation sheet.
NOTE: If "power up" RPM control is programmed, elevated idle will
occur within a few seconds after the below enabling interlocks are
met.
Ensure That Enabling Conditions Are Met
- Parking brake set
- Manual transmission
- Engage clutch (foot off clutch pedal)
- Automatic transmission
- Foot off brake
- Foot off accelerator
- Brake lights connected and functional
Power Supply Check
- Start Engine
- Observe brief display of "8's" followed by engine speed
- Observe steady light next to POWER key and backlighting on keys
NOTE: See Diagnostic Section (Section IX) if any of the above are
not observed.
Functionality Check
- Stop engine
- Restart engine
- Observe brief display of "8's"
- IMMEDIATELY press CHARGE PROTECT key if "Power Up" Charge
Protection is not enabled
- Observe flashing light next to CHARGE PROTECT key
- If batteries are fully charged, no high current draw accessories
are on, and engine is fully warmed, observe elevated engine speed
sound equivalent to 1300 RPM
- Observe display of nominal system voltage
NOTE: If engine is not fully warmed (glow plugs are on initially
after start), very high electrical loads exist, or batteries are
significantly discharged, engine speed will be greater than 1300
RPM. If electrical loads exceed maximum alternator output
(normal with glow plug operation) a below normal system voltage will
be displayed.
You have activated the "Charge Protection" function to do this
check. To deactivate this function, do one of the following:
- Press CHARGE PROTECT key
- Light next to CHARGE PROTECT key goes out
- Engine speed returns to vehicle idle
- Current engine speed is displayed
- Press brake or clutch pedal, take vehicle out of PARK, or
release parking brake
- Light next to CHARGE PROTECT key goes out
- Engine speed returns to vehicle idle
- Current engine speed is displayed
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key
- Light next to CHARGE PROTECT key goes out
- Engine speed returns to vehicle idle
- Current engine speed is displayed
- Press POWER key
- All lights next to keys go out (system is off)
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This unit is shipped with "Charge Protection" Fixed Elevated Idle,
and Manual RPM Control activated and "Power Up" Charge Protection
and "Power Up" RPM control deactived. Any of these features
can be selected or deselected, either with the engine running or
with the key in the "on" position and the engine not running.
NOTE: This kit provides single station operation only.
To Enable or Disable Functions:
- Ensure that light next to POWER key is lit and engine speed is
displayed. If not, press POWER key
- Steady light shows next to POWER key
- Current engine speed is displayed
- Press ACTIVATE/DEACTIVATE (FORD OVAL), RPM CONTROL, and CHARGE
PROTECT keys simultaneously for 3 seconds to activate programming
mode
- Press any arrow key to toggle Manual RPM Control function.
- "VRMP" and "/\AMP" are disappear if they were previously
displayed (Manual RPM Control will be disabled)
- "VRMP" and "/\AMP" are displayed if they were not previously
displayed (Manual RPM Control will be enabled)
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key to proceed to the next
step in programming. (To exit this programming mode, see the
last paragraph of this section.)
- "V" flashes in upper right corner of display
- "CHARGE" is displayed if Charge Protect capability is enabled
- Press any arrow to toggle Charge Protect capability
- "CHARGE" disappears if it was previously displayed (Charge
Protect capability will be disabled)
- "CHARGE" is displayed if it was not previously displayed (Charge
Protect capability will be enabled)
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key to proceed to the next
step in programming. (To exit this programming mode, see the
last paragraph of this section.)
- "RPM" flashes in lower left corner of display
- "RPM" is displayed at upper right if Fixed RPM Control is enabled
- Press any arrow key to toggle Fixed RPM Control capability
- "RPM" disappears if it was previously displayed (FIXED RPM
Control capability will be disabled)
- "RPM" is displayed if it was not previously displayed (Fixed RPM
Control capability will be enabled)
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key to proceed to the next
step in programming. (To exit this programming mode, see the
last paragraph of this section.)
NOTE: The "Power-up" modes function only for vehicles with
automatic transmission.
NOTE: If either of the "Power-up" functions were canceled prior
to entering station programming, and a change is made to Manual RPM
Control, Charge Protect, or Fixed RPM Control enabling/disabling,
"BASE" will be indicated on the display.
- If neither Power-up mode is activated, "BASE" will be displayed
- If Power-up Charge Protect mode is activated, "A CP" will be
displayed
- If Power-up RPM mode is activated, "A Sr" will be displayed
- Press any arrow key to change to a different "Power-up" mode
- If neither Power-up mode is activated, "BASE" will be displayed
- If Power-up Charge Protect mode is activated, "A CP" will be
displayed
- If Power-up RPM mode is activated, "A Sr" will be displayed
CAUTION:
SELECTION OF THE "POWER-UP" RPM OR "POWER-UP" CHARGE PROTECT
FUNCTION WILL RESULT IN ELEVATED ENGINE RPM WITHIN A FEW SECONDS OF
THE VEHICLE'S ENABLING INTERLOCKS BEING MET.
To Exit Station/Function Enable/Disable Programming Before
Completing All Steps:
- Press ACTIVATE/DEACTIVATE (FORD OVAL), RPM CONTROL, and CHARGE
PROTECT keys simultaneously for 3 seconds.
- Current engine speed is displayed
To Exit Station/Function Enable/Disable Programming After
Completing All Steps:
- Press and release ACTIVATE/DEACTIVATE (FORD OVAL)
- Current engine speed is displayed after the final programming
step
- Press POWER key
- All lights next to keys go out (system is off)
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The RPM Control function provides elevated (minimum 1300 RPM,
maximum 2500 RPM) idle engine speed operation with closed-loop
control. When the module is shipped, the four engine RPM
memories are pre-set at four intermediate RPM values over the
operating range, with a moderate "up" ramp rate. Manual RPM
control is available by using the slow and fast up and down keys.
CAUTION: IF
"POWER-UP" RPM CONTROL HAS BEEN PROGRAMMED, ELEVATED ENGINE RPM WILL
OCCUR WITHIN A FEW SECONDS AFTER VEHICLE'S ENABLING INTERLOCK
CONDITIONS ARE MET.
To Activate RPM Control (If "Power-up" RPM Control has not been
programmed):
- Start engine and ensure that vehicle enabling conditions are met
- Steady light shows next to POWER key
- Current engine speed is displayed
- Press RPM CONTROL key
- Steady light shows next to RPM CONTROL key
- RPM stored in Memory #1 displayed
- If any memory other than Memory #1 is desired, press one of the
four arrow keys to recall the engine speed stored in that memory
- RPM stored in memory selected is displayed
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key to change the engine
speed
- Light next to RPM CONTROL key blinks
- Engine speed increases to RPM displayed
To Use Manual RPM Control:
- Select and activate a pre-set engine speed in "To Activate RPM Control"
- Press or hold a single arrow (slow) key or a double arrow (fast)
key
- Next engine speed is displayed
- Light next to RPM CONTROL key blinks
- When arrow key is released, engine speed displayed becomes a new
temporary set point
To Exit RPM Control:
- Press RPM CONTROL key
- Light next to RPM CONTROL key goes out
- Engine speed returns to vehicle idle
- Current engine speed is displayed
- "Power-up" RPM Control, if enabled, is canceled for the current
ignition cycle
- Press brake or clutch pedal, take vehicle out of PARK, or
release parking brake
- Light next to RPM CONTROL key becomes steady (system is still in
RPM Control mode)
- Engine speed returns to vehicle idle
- Engine speed stored in most recently selected memory is displayed
- "Power-up" RPM Control, if enabled, is NOT canceled. If
vehicle enabling conditions are re-established, RPM Control will be
re-engaged
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key
- Light next to RPM CONTROL key becomes steady (system is still in
RPM Control mode)
- Engine speed returns to vehicle idle
- Engine speed stored in most recently selected memory is
displayed
- "Power-up" RPM Control, if enabled, is canceled for the current
ignition cycle
- Press POWER key
- All lights next to keys go out (system is off)
- "Power-up" RPM Control, if enabled, is NOT canceled. If
APC is repowered, and vehicle enabling conditions are met, RPM
Control will be re-engaged
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Programmable engine speed is limited to a minimum of 1300 RPM and a
maximum of 2500 RPM. The four RPM memories are pre-set at four
intermediate values within the operating range. These
setpoints can be changed with the engine running the following
method.
To Re-Program An RPM Memory
- Select and activate the memory you wish to re-program
- Tap or hold a single arrow (slow) key or a double arrow (fast)
key until desired engine speed is reached
- New engine speed is displayed
- Light next to RPM CONTROL key blinks
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key and top arrow key
simultaneously
- New engine speed is stored in memory
To Exit RPM Memory Re-Programming
- Press RPM CONTROL key
- Light next to RPM CONTROL key goes out
- Engine speed returns to vehicle idle
- Current engine speed is displayed
- Press brake or clutch pedal, take vehicle out of PARK, or
release parking brake
- Light next to RPM CONTROL key becomes steady (system is still in
RPM Control mode)
- Engine speed returns to vehicle idle
- Engine speed stored in most recently selected memory is displayed
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key
- Light next to RPM CONTROL key becomes steady (system is still in
RPM Control mode)
- Engine speed returns to vehicle idle
- Engine speed stored in most recently selected memory is displayed
- Press POWER key
- All lights next to keys go out (system is off)
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CAUTION: IF
"POWER-UP" CHARGE PROTECTION HAS BEEN PROGRAMMED, AUTOMATIC ELEVATED
ENGINE RPM WILL OCCUR WITHIN A FEW SECONDS OF THE VEHICLE'S ENABLING
INTERLOCK CONDITIONS BEING MET.
To Activate "Charge Protection" (If "Power-up" Charge Protection
has not been programmed):
- Start engine and ensure that vehicle's enabling interlock
conditions have been met
- Steady light shows next to POWER key
- Current engine speed is displayed
- Press CHARGE PROTECT key
- Light next to CHARGE PROTECT key blinks
- Engine speed increases
- Battery voltage ramps up (if necessary) and is displayed
To Exit "Charge Protection":
- Press CHARGE PROTECT key
- Light next to CHARGE PROTECT key goes out
- Engine speed returns to vehicle idle
- Current engine speed is displayed
- "Power-up" Charge Protection, if enabled, is canceled for the
current ignition cycle
- Press brake or clutch pedal, take vehicle out of PARK, or
release parking brake
- Light next to CHARGE PROTECT key goes out
- Engine speed returns to vehicle idle
- Current engine speed is displayed
- "Power-up" Charge Protection, if enabled, is NOT canceled.
If vehicle enabling conditions are re-established, Charge Protection
will be re-engaged
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key
- Light next to CHARGE PROTECT key goes out
- Engine speed returns to vehicle idle
- Current engine speed is displayed
- "Power-up" Charge Protection, if enabled, is canceled for the
current ignition cycle
- Press POWER key
- All lights next to keys go out (system is off)
- "Power-up" Charge Protection, if enabled, is NOT canceled.
IF APC module is repowered, and vehicle enabling conditions are met,
Charge Protection will be re-engaged
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The engine speed setpoints stored in the four memories can be reset
in one of two ways: (1) While in RPM Control mode with the engine
running as described in this section either with the key on and the
engine off or with the engine running. In addition, the ramp
"up" rate for each memory can be reset. This is the rate at
which engine speed will increase when a new setpoint is activated in
RPM Control mode. The ramp "up" rate for each of the four
memories is preset at 1/2 of the maximum allowable acceleration
rate. NOTE: The ramp "down" rate cannot be reset.
To Re-Program RPM Memories and Ramp Rates:
To Exit RPM Memory and Ramp Re-Programming:
- Press ACTIVATE/DEACTIVATE (FORD OVAL) and RPM CONTROL keys
simultaneously for 3 seconds
- Light next to RPM CONTROL key goes out
- Light next to POWER key goes to steady state
- Current engine speed is displayed
- Press POWER key
- All lights next to keys go out (system is off)
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| Problem |
Action |
| APCM functions but control screen is
blank |
- Reprogram the APCM with the latest level calibration
|
| No backlight on ACTIVATE/DEACTIVATE
(FORD OVAL) key or POWER key |
- Check power and ground lines
|
| When trying to enter a mode, light
next to RPM CONTROL key or CHARGE PROTECT key blinks briefly but
does not stay lit |
- Ensure that enabling conditions are met
- Parking brake engaged
- Clutch engaged (foot off) or vehicle in PARK
- Service brake off
- Foot off accelerator
- Brake lights connected and functional
- With APC module turned off, use NGS Tester to determine if
there are any brake or clutch pedal fault codes
- For non-speed control vehicles (1995 MY only):
- PCM may be incorrect. For manual vehicles, processor
catch-word must be SOD4 or later.
- For F250/F350/E350 automatic vehicles, processor catch-word
must be TEE5 or later
- For Super Duty vehicles, processor catch-word must be PRY4
or later. The catch-word tag may be located on the vehicle
"A" pillar or on the PCM itself.
|
| Display reads CErr for 5 seconds
before normal display activation |
- Check communication lines
- One may be open or shorted
|
| Display reads CErr |
- Check communications lines
- Check vehicle model year
- May be pre-1995 (module will not function in earlier model
vehicles)
|
| Display reads CrSd |
- Check communication lines
- If communication lines are OK, replace APC module
|
| Display reads EErr |
- APC component defective - Replace APC module
|
| Display reads AErr |
- APC component defective - Replace APC module
|

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- Remove contents of box and examine contents for correct
component qualities.
- Using the four (4) screws provided (Item #11), attach the APC
Module (Item #12) to the Module Bracket (Item #10). Torque
screws to 1.6 - 2.0 Nm.
- Snap U-nut (Item #9) onto one end of the Bracket (Item #10) with
conical nut projection pointing toward the inside of the angle.
(Refer to sketch.)
- Attach the Rear Angle Brace (Item #8) to the Module Bracket
Assembly using one of the Screws (Item #6) provided. Do not
fully tighten at this time!
- Place Clip (Item #5) around Instrument Panel Support (Item #3),
with the flat part of the Clip tangent to the bottom side of the
Instrument Panel Support. (Refer to sketch.)
- Remove the two (2) Instrument Panel Attachment Screws (Item #4)
as shown.
- Place APC Module Assembly under Instrument Panel (Item #1) in
position under Ash Receiver Door (Item #2) and attach to flange
using the two (2) screws (Item #4) that were removed in Step F.
Torque screws to 2.5 ± 0.4 Nm.
- Making sure that the Clip (Item #5) is above the Brace (Item
#8), attach the components using the Screw (Item #6) and the Nut and
Washer (Item #7 as shown.
- Tighten the M6 Fasteners (Item #6) to 12 ± 1.8 Nm.
- Attach Wiring Connector (Item #13) to mating connector under
Instrument Panel and attach the other end to the APC Module.
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NOTE: IF SYSTEM IS PROGRAMMED FOR "POWER-UP" RPM OR "POWER-UP"
CHARGE PROTECTION, FUNCTION WILL BE ACTIVE WHENEVER THE ENABLING
CONDITIONS ARE MET.
To Deactivate "Charge Protect" or RPM Control:
- Press lighted key for function in use
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key
- Press POWER key
- Press brake or clutch pedal, take vehicle out of PARK, or
release parking brake
NOTE: To deactivate "Power-up" RPM Control or "Power-up" Charge
Protection, use and of the above methods. However, note that
pressing the lighted key for the function in use or the
ACTIVATE/DEACTIVATE (FORD OVAL) key will necessitate a
key-off/restart cycle to regain the "Power-up" function.
Pressing the POWER key does not cancel the "Power-up" function.
It will still be enabled if the POWER key is pressed again.
Enabling Conditions:
- Parking brake set
- Foot off clutch or gear shift lever in PARK
- Foot off service brake
- Foot off accelerator
- Brake lights connected and functional
"Charge Protect" Activation (If "Power-up" Charge Protection has
not been programmed):
- Press CHARGE PROTEC key
- Light next to CHARGE PROTECT key blinks
- RPM increases
- System voltage is displayed
Fixed Speed RPM Control Activation (If "Power-up" RPM Control has
not been programmed):
- Press RPM CONTROL key
- Steady light next to RPM COTROL key
- RPM stored in Memory #1 is displayed
- If any memory other than Memory #1 is desired, press on the the
four (4) arrow keys to recall the engine speed stored in that memory
- RPM stored in memory selected is displayed
- Press ACTIVATE/DEACTIVATE (FORD OVAL) key to activate
- Light next to RPM CONTROL key blinks
- Engine speed increases to RPM displayed
Manual RPM Control:
- Select and activate a preset fixed engine speed
- Press or hold "up" or "down" single arrow (slow) or double arrow
(fast) key
- New engine speed is displayed
- Light next to RPM CONTROL blinks
- When key is released, RPM displayed becomes new temporary
setpoint
- To save new setpoint, simultaneously press and hold top arrow
key and ACTIVATE/DEACTIVATE (FORD OVAL) key for 2 seconds
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