Buell 2002 S3T, Service Manual

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2002 Buell S3T: Fuel System 4-67
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Code 23/32 Test (Part 1 of 2)
Clear codes and confirm proper
operation with no check engine
lamp.
Is connector connected at the injector?
YES NO
Reconnect and
install fuel tank.
YES
Disconnect and attach Fuel Injector Test
Lamp. Crank engine. Does lamp flash?
1
1
Measure resistance of the suspect injector.
Resistance across terminals should be
12.25 ohms? Is it?
Check Terminal 1 (GY wire) on injector
connector to ground. Should be
equivalent to battery voltage after key ON.
Is it?
NO
Attach Breakout Box (HD-42682) to ECM.
If CODE 23, measure resistance between
ECM Pin 5 of [10] (W/Y wire) and
Terminal 2 of front injector connector [84].
If CODE 32, measure resistance between
ECM Pin 8 of [10] (GN/GY wire) and
Terminal 2 of rear injector connector [85].
Is resistance less than 0.5 ohm?
YES
Check for loose or
corroded terminals
in harness. Repair
as necessary.
Replace injector. See
4.40 THROTTLE BODY
AND INTAKE MANI-
YES NO NO
Go to Code 23/32
Test (Part 2 of 2)
YES NO
Repair open or
poor connection.
Using Breakout Box, check with test lamp
between ECM [10] Pin 5 (CODE 23) or
ECM [10] Pin 8 (CODE 32) and ECM [10]
Pin 1. Does light flash when cranked?
YES NO
Recheck connections.
Perform 4.8 WIGGLE TEST .
Repair as necessary.
2
2
2
1
4
1
With the engine off, Scanalyzer (Active Diagnostic
Test Mode) can be used to energize either the front
or rear injector once each second for a total of five
seconds.
2
With the engine off, Scanalyzer (Active Diagnostic
Test Mode) can be used to turn fuel pump on for
periods up to 30 seconds. Power to the pump also
includes power to the fuel injectors and ignition
coil.
SCANALYZER NOTES
STOP
Replace ECM. See
4.29 ELECTRONIC
CONTROL MODULE .
3
7785
1
7790
7795
7805
7815
7810