Section 03: FUEL SYSTEM
PA1564
14
10. FUEL
COOLER
The fuel cooler serves to cool the surplus diesel
fuel after it has exited the cylinder head, on its
way back to the fuel tank. It is accessible
through the engine radiator door, and is located
in front of the charge air cooler (CAC) and the
coolant radiator (Fig. 13 &14).
FIGURE 13: FUELRETURN LINE
03078
FIGURE 14: FUEL COOLER LOCATION
03079
11. FUEL
PEDAL
The EFPA (Electronic Foot Pedal Assembly)
connects the accelerator pedal to a
potentiometer (a device that sends an electrical
signal to the ECM, which varies in voltage,
depending on how far down the pedal is
depressed). The EFPA is installed in the space
normally occupied by a mechanical foot pedal. It
has maximum and minimum stops that are built
into the unit during manufacturing.
11.1
FUEL PEDAL ADJUSTMENT
The EFPA contains a throttle position sensor
that varies the electrical signal sent to the ECM.
The sensor must be adjusted whenever an
EFPA is serviced. In addition, the sensor should
be adjusted any time codes 21 and 22 are
flashed.
With the ignition "ON" and the proper diagnostic
tool (DDR) (for information regarding the DDR,
see
"01 ENGINE"
in this manual), check the
throttle counts at idle and full throttle positions.
Proper pedal output should be 20/30 counts at
idle and 200/235 at full throttle. If adjustment is
necessary, remove the potentiometer retaining
screws and rotate the potentiometer clockwise
to increase counts or counterclockwise to
decrease. When correct output is confirmed,
tighten retaining screws.
11.2 POTENTIOMETER
REPLACEMENT
1. Disconnect cable harness connector.
2.
Loosen the two screws and remove
potentiometer. Retain for re-assembly.
3. Discard potentiometer (Fig. 15).
CAUTION
Note the routing and clamping locations of the
cable before disassembly. Proper cable
routing and fastening is critical to the
operation of this system. Marking the foot
pedal assembly to record cable routing is
recommended.
4.
Position new potentiometer. Press
potentiometer onto the potentiometer shaft,
matching cutouts in shaft to drive tangs of
potentiometer. Apply hand pressure until
potentiometer has bottomed out in housing.
Reinstall screws (Fig. 15) and tighten just
enough to secure potentiometer lightly. Tighten
screws to 10 - 20 Lbf-in (1.13 - 2.26 Nm).
5. Reconnect electronic foot pedal assembly's
cable harness to the ECM connector. If
potentiometer calibration is necessary (see
"FUEL PEDAL ADJUSTMENT"
in this
section).
Summary of Contents for LE MIRAGE XLII BUS SHELLS
Page 1: ...COACH MANUFACTURER MAINTENANCE MANUAL LE MIRAGE XLII BUS SHELLS PA1564 1ST EDITION...
Page 12: ...Section 00 GENERAL INFORMATION 10 PA1564 FIGURE 13 METRIC US STANDARD CONVERSION TABLE 00005...
Page 13: ...Section 00 GENERAL INFORMATION PA1564 11 FIGURE 14 CONVERSION CHART 00006...
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Page 63: ...SECTION 01 ENGINE PA1564 33 FIGURE 13 POWER PLANT CRADLE INSTALLATION 01140...
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Page 229: ...FAULT CODE MANUAL Created on 00 04 25 15 30 1 FAULT CODE MANUAL B7L B7TL B12...
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Page 379: ...Section 12 BRAKE AND AIR SYSTEM PA1564 21 FIGURE 38 AIR OPERATED BRAKING SYSTEM WE...
Page 380: ...Section 12 BRAKE AND AIR SYSTEM PA1564 22 FIGURE 39 AIR OPERATED BRAKING SYSTEM W5...
Page 387: ...Section 12 BRAKE AND AIR SYSTEM PA1564 29 FIGURE 46 ABS 6S 5M CONFIGURATION...
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Page 1086: ...Section 22 HEATING AND AIR CONDITIONING PA1564 18 FIGURE 17 DOUBLE SWEEP EVACUATION SET UP...
Page 1118: ...Section 22 HEATING AND AIR CONDITIONING PA1564 50 FIGURE 54 HEATER LINE SHUTOFF VALVES WE...
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Page 1126: ...WORKSHOP MANUAL COMPRESSOR MODEL 05G TWIN PORT...
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Page 1223: ...Section 26 XLII SLIDE OUT PA1564 11...
Page 1224: ...Section 26 XLII SLIDE OUT PA1564 12 FIGURE 16 KEYLESS BUSHING INSTALLATION INSTRUCTION...