Buell 2002 P3 Service Manual page 338

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DRIVABILITY TROUBLESHOOTING
Poor Performance, Poor Fuel Economy,
Excessive Pinging
Locate connector [88A] and [88B] on the carburetor. Remove Pin #3
on the harness side. Install Breakout Box Adaptor (HD-42962)
1
between [88A] and [88B]. Measure voltage between pin 3 and pin
5 on the Breakout Box. Voltage should change smoothly, slightly
above 0.5V (closed throttle) and below 3.7V (open throttle). Does it?
YES
Check Timing. See Ignition
Module/Cam Position
Sensor for procedure.
Is Timing Set Correctly?
YES
Check Auto-
Enrichener.
See Section 7.6
Closed Throttle Voltage
>0.55V or <0.45V
Recalibrate TP
Sensor. See
Section 7.4.
YES
Locate and
Repair Short
to ground.
7605
Check continuity between Breakout Box
Pin 3 and connector [88B] pins 3 and 4.
Continuity Present?
YES
Replace
TP Sensor
1
Remove seat and fuel tank cover. See 2.31 SEAT.
7553
NO
Adjust Timing.
7553
0V
Check resistance
Between Pin 3 and
Locate and
ground. Is resistance
Repair Short
less than 1 ohm?
to voltage.
NO
Replace
Ignition Module
YES
Repair Open
7590
Figure 9. Drivability Troubleshooting
NO
12V
No Change
Check continuity between
breakout box pin 5 and
connector [88B] pin 5.
Continuity present?
7575
7604
NO
7580
NOTE
Male connectors are labeled "A"
Female connectors are labeled "B"
Erratic or
greater than 3.7V
and less than 12V
Check connections.
Terminals OK?
YES
Replace
TP Sensor
7595
NO
Repair Open
7610
2002 Buell P3: Electrical
NO
Repair
7554
7-11