Harley Davidson 2008 Sportster Models. Electrical Diagnostics Manual

Engine Cranks, But Will Not Start (Part 2 of 4)

Continued from Engine Cranks But Will Not Start

(Part 1 of 4).

Install fuel pressure gauge (Part No. HD-41182).

See 4.15 FUEL PRESSURE TEST. While

cranking engine (for more than 2 seconds to

ensure proper system operation), verify that

fuel pressure rises to 55-62 PSI (380-427 kPa).

Adequate fuel pressure present?

YES

Check spark plug condition, replace if fouled.

Reinstall spark plugs before checking spark.

Incorrect pressure. See 4.15

Check spark at both plugs while cranking.

FUEL PRESSURE TEST.

Spark present?

YES

Check battery voltage at

Verify connector is securely attached to each injector.

Terminal “A” (+) of coil connector

If so, disconnect fuel injector connector and attach

[83B] using DVOM. Battery

fuel injector test lamp (HD-34730-2C). Crank engine.

voltage present for 2 seconds

Does lamp flash?

after key ON?

YES

Monitor IAC pintle for 10 seconds

after turning ignition OFF.

Correct problems with

Open in (Y/GN) wire

Does pintle extend and then retract

fuel injectors. See 4.22

STOP

between splice for fuel

during 10 second key OFF

DTC P0261, P0262,

pump wire and ignition

reset procedure?

P0263, P0264.

coil. Repair open.

Go to Engine Cranks

But Will Not Start

(Part 3 of 4).

YES

Check engine compression.

See 4.16 IDLE

Is compression within

AIR CONTROL.

specifications?

Clear DTCs using speedometer self diagnostics.

See 4.6 SPEEDOMETER SELF DIAGNOSTICS.

Confirm proper operation with no check engine

YES

lamp.

Replace plugged

See

fuel injector(s).

Service Manual.

fc01198_en

2008 Sportster Diagnostics: Engine Management 4-25

Engine Cranks, But Will Not Start (Part 3 of 4)

Continued from Cranks But Will Not Start

(Part 2 of 4).

Perform coil circuit test. Does lamp flash?

YES

Disconnect ECM connector [78]. Inspect

Check coil connections.

for damaged terminals, terminals backed

Connections OK?

out or corroded.

Terminal problems present?

YES

Test spark plug cable resistance.

YES

See 4.17 MISFIRE AT

Repair.

IDLE OR UNDER LOAD.

Resistance OK?

Repair terminal

Reconnect.

damage.

Problem still exist?

YES

Replace spark

Replace

plug cables.

coil.

Problem

fixed.

STOP

Go to Cranks But

Will Not Start

(Part 4 of 4).

Clear DTCs using speedometer self diagnostics.

See 4.6 SPEEDOMETER SELF DIAGNOSTICS.

Confirm proper operation with no check engine

lamp.

fc01199_en

4-26 2008 Sportster Diagnostics: Engine Management

Engine Cranks, But Will Not Start (Part 4 of 4)

Continued from Cranks But Will Not Start

(Part 3 of 4).

Check connectors for moisture and corrosion.

Check CKP sensor and harness

wires for chafing. Connect DVOM to ECM

terminals “12” and “30” on Breakout Box

and set it for AC volts. Crank engine.

Does DVOM read 1 VAC minimum?

YES

Replace ECM.

Disconnect CKP connector [79]. Check

Reprogram and

connectors for moisture and corrosion.

learn password.

Check wires for chafing.

Is connector or wire damage present?

YES

Replace CKP

Connect DVOM to Terminals “1” and

sensor.

“2” of [79A]. Crank engine.

Does DVOM read 1

VAC minimum?

YES

Check for continuity between

With meter still connected,

terminal “30” on Breakout Box and

check for resistance.

terminal “1” of connector [79B].

Is resistance 600-1200 ohms?

Continuity present?

YES

Locate and repair open on

Loose sensor at crankcase.

(BK) wire between terminal “2” of

(R) wire between terminal “1”

Replace crank position sensor.

Check for contamination or

connector [79B] and terminal “12”

of connector [79B] and

See Service Manual.

damage. Tighten sensor.

on Breakout Box.

terminal “30” on Breakout

Box.

Clear DTCs using speedometer self diagnostics.

See 4.6 SPEEDOMETER SELF DIAGNOSTICS.

Confirm proper operation with no check engine

lamp.

fc01200_en

2008 Sportster Diagnostics: Engine Management 4-27

NO ECM POWER

4.11

1. Connect BREAKOUT BOX (Part No. HD-43876). See

GENERAL

4.7 BREAKOUT BOX: EFI.

No Spark/No Check Engine Lamp at Key On

2. Use HARNESS CONNECTOR TEST KIT (Part No. HD-

Constant power is supplied to the ECM through terminal "31".

41404-B), gray probes and patch cords.

The ECM turns on when power is applied to terminal "13" of

connector

[78]. The ECM goes through an initialization

sequence every time power is removed and re-applied to ter-

ed02838

minal "13". The only visible part of this sequence is the check

engine lamp. Upon starting, the check engine lamp will illu-

minate for 4 seconds and then (if parameters are normal) go

out.

If battery power is absent at ECM terminal "31":

•

DTCs cannot be cleared. Tool will show them as cleared

but will be present next time ignition key is cycled.

•

ECM cannot be re-flashed.

•

Vehicle will start but IAC pintle will not reset at key OFF.

Eventually pintle will be out of position causing perform-

ance problems.

NOTE

1. ECM fuse

The key ON sequence also activates the idle air control motor.

2. Fuel pump fuse

If power from terminal "31" is disrupted (blown fuse, etc.)

3. Spare fuse (3; 1 empty)

always turn the key OFF wait 10 seconds then turn the key

4. Start relay

ON to reset the motor to the default position.

5. System relay

6. Ignition fuse

DIAGNOSTICS

7. Instruments fuse

8. Accessories fuse

PART NUMBER

TOOL NAME

9. Battery fuse

HD-41404-B

HARNESS CONNECTOR TEST KIT

10. Lights fuse

11. P & A ignition fuse

HD-43876

BREAKOUT BOX

12. Open

13. MAXIFUSE

Diagnostic Notes

Figure 4-17. Fuses and Relays

Each reference number below correlates to a circled number

on the flow chart(s).

4-28 2008 Sportster Diagnostics: Engine Management

em01201

To system

[78A]

[78B]

relay

ECM

30 Amp

MAXIFUSE

15 Amp

ECM Fuse

Battery

BE/GY

Battery

TSM/TSSM/HFSM

15 Amp

Ignition Fuse

Switch power

W/BK

R/BK

C B A

[33B]

I B A

[33A]

[22B]

[22A]

Ground

Ignition

Switch

Ground

GND 1

Engine Stop

Switch

Figure 4-18. ECM Power Circuit Diagram

Table 4-10. Wire Harness Connectors

NO.

DESCRIPTION

TYPE

LOCATION

[22]

Right handlebar controls

6-place Molex

Under fuel tank

[78]

Electronic Control Module (ECM)

36-place Packard

Under seat

[GND 1]

ECM ground

Ring terminal

Engine crankcase

2008 Sportster Diagnostics: Engine Management 4-29

No ECM Power (Part 1 of 2)

Check ECM and ignition fuse.

Are fuses OK?

YES

Disconnect ECM connector [78]. Inspect

Locate and repair short

for damaged terminals, terminals backed

to ground. Replace 15

out or corrosion.

amp fuse.

Terminal problems present?

YES

Repair terminal

Reconnect.

damage.

Problem still exist?

YES

With ignition ON, probe ECM terminal “13” on

Problem

Breakout Box with a circuit test lamp connected

fixed.

to ground.

Does test lamp illuminate?

STOP

YES

Go to No ECM

Power (Part 2 of 2).

Probe ECM terminal “31” on

Breakout Box with test lamp

connected to ground.

Does test lamp illuminate?

YES

Probe ECM terminals “10” and

Probe red wire terminal in

“28” on Breakout Box with test

15 amp ECM fuse holder

lamp connected to +12V

with test lamp connected

(battery positive terminal).

to ground.

Does test lamp illuminate?

YES

Repair open in (BE/GY)

Repair open in (R) wire

Replace ECM.

Repair open in

Reprogram and learn

wire between fuse holder and

between 30 amp main

(BK) wire between

fuse and 15 amp fuse

password.

ECM connector [78].

connector [78B] and

holder.

ground 1.

fc01201_en

4-30 2008 Sportster Diagnostics: Engine Management

No ECM Power (Part 2 of 2)

Continued from No ECM Power (Part 1 of 2).

With ignition ON, measure voltage at terminal “3”

(GY) of connector [22B].

Battery voltage present?

YES

With ignition OFF and Engine Stop Switch

Repair open (GY) wire between

in RUN position, measure resistance at

connector [22] and fuse.

terminals “3” and “4” of connector [22A].

Resistance less than one ohm?

YES

Repair open circuit on (W/BK) wire

Repair/Replace Engine Stop

between ECM and connector [22A].

Switch or wiring.

Clear DTCs using speedometer self diagnostics. See 4.6

SPEEDOMETER SELF DIAGNOSTICS. Confirm proper operation

with no check engine lamp.

fc01202_en

2008 Sportster Diagnostics: Engine Management 4-31

STARTS, THEN STALLS

4.12

GENERAL

DIAGNOSTICS

Diagnostic Trouble Codes U1300, U1301, or

PART NUMBER

TOOL NAME

BUS ER

HD-41404-B

HARNESS CONNECTOR TEST KIT

The typical serial data voltage range is 0 volt (inactive) to 7

Diagnostic Tips

volts (active). Due to the short pulse, voltages will be much

lower on a digital volt/ohmmeter (DVOM). In analog mode, a

•

If serial data is shorted, these codes will automatically trip

DVOM reading serial data will show continuous voltage when

the check engine light.

active, typically 0.6-0.8 volt. The range for acceptable opera-

•

DTCs P1009 and P1010 may accompany DTCs U1300

tions is greater than 0 and less than 7.0 volts.

and U1301.

NOTE

Diagnostic Notes

Problems in the fuel system or idle air control system may also

create this symptom.

Each reference number below correlates to a circled number

on the flow chart(s).

Table 4-11. Code Description

1. Use HARNESS CONNECTOR TEST KIT (Part No. HD-

41404-B), black socket probes and patch cord.

DTC

DESCRIPTION

2. Unplug the neutral switch connector [136]. Using a DVOM,

U1300

Serial data low

test for continuity to ground. When the transmission is in

U1301

Serial data open/high

neutral, continuity should exist. When the transmission is

in gear, there should not be continuity to ground through

the neutral switch.

ed01340

Figure 4-19. Data Link Connector [91A]

4-32 2008 Sportster Diagnostics: Engine Management

Speedometer

em01120

Tachometer (Optional)

TSM/TSSM/HFSM

[39A]

6 7

[108A]

[39B]

6 7

[108B]

[30A]

[30B]

[GND1]

[20A]

[20B]

To ACCY fuse

R/GY

O/W

To BATT fuse

12V ACCY

Fuse

[GND1]

BN/GY

12V BATT

Fuse

To INSTR fuse

LGN/V

R/BK

12V INSTR

Fuse

To IGN fuse

Data Link

Connector

LGN/V

R/BK

12V IGN

Fuse

[91A]

[GND1]

[78B]

[78A]

ECM

Figure 4-20. Serial Data Circuit

Table 4-12. Wire Harness Connectors

NO.

DESCRIPTION

TYPE

LOCATION

[20]

Instruments

12-place Molex

Under fuel tank

[30]

TSM/TSSM/HFSM

12-place Deutsch

Under battery tray

[39]

Speedometer

12-place Packard

Back of speedometer

[78]

Electronic Control Module (ECM)

36-place Packard

Under seat

[91]

Data link connector

4-place Deutsch

Under left side cover

[108]

achometer (if equipped)

12-place Packard

Back of tachometer

2008 Sportster Diagnostics: Engine Management 4-33

Starts, Then Stalls (Part 1 of 2): DTC U1300, U1301, or BUS Er

Fresh gasoline

in tank?

YES

Check for diagnostic trouble

codes (DTCs) using 4.6 SPEEDOMETER

Add gasoline.

SELF DIAGNOSTICS.

DTCs found?

YES.

NO.

DTC P1009,

YES.

BUS Er present.

No codes found.

P1010 found. See

U1300 or U1301

speedometer will not

4.27 DTC P1009,

codes found.

communicate with other

P1010.

modules.

With the Ignition Switch ON and the

Engine Stop Switch in the Run position

and the Jiffy Stand down, does the

odometer display “SIdE StAnd”?

STOP

Go to Starts, Then

Stalls (Part 2 of 2):

Go to Starts, Then

YES

DTC u1300, U1301,

Stalls (Part 2 of 2):

or BUS Er.

DTC u1300, U1301,

Will engine start with throttle

or BUS Er.

opened partially and stall when

throttle closed?

Turn the Ignition Switch OFF. Raise the Jiffy

Stand. Turn the Ignition ON with the Enigine Stop

Switch in the RUN position.

Does the odometer display “SIdE StAnd”?

YES

Check fuel pressure while

See 4.16 IDLE AIR

cranking engine. See 4.15

YES

CONTROL.

FUEL PRESSURE TEST. Is

fuel pressure OK?

Inspect the Jiffy Stand Sensor for

Check for an open in the

correct mounting and clearance to

neutral switch circuit.

Jiffy Stand tab (4.5mm) max.

YES

Is there an open?

Is switch mounted correctly?

Tap lightly on fuel

Fuel pressure problem. See

injectors.

flow chart under 4.15 FUEL

Problem still exist?

PRESSURE TEST.

YES

Test Neutral switch.

Replace Jiffy

Correct open

Is Neutral switch

Stand Sensor.

in circuit.

Replace fuel injectors.

operating properly?

Problem still exist?

System

OK.

Install Jiffy

YES

Stand Sensor

YES

correctly.

System

Replace ECM.

OK.

Replace TSM/

Replace

Reprogram and learn

TSSM.

Neutral switch.

password.

Clear DTCs using speedometer self diagnostics.

fc01203_en

See 4.6 SPEEDOMETER SELF DIAGNOSTICS.

Confirm proper operation with no check engine

lamp.

4-34 2008 Sportster Diagnostics: Engine Management

Starts, Then Stalls (Part 2 of 2): DTC U1300, U1301, or BUS Er

Continued from Starts Then Stalls (Part 1 of 2): DTC

U1300, U1301, or “BUS Er”.

Set Engine Stop switch to RUN. Turn ignition key ON.

Is BUS Er present?

YES

Turn ignition key OFF.

Turn ignition key OFF. While wiggling

Disconnect ECM at connector

harness, check for continuity to ground at

[78]. Turn ignition key ON.

terminal “3” of connector [91A].

Is BUS Er present?

Is continuity to ground present at any time?

YES

Turn ignition key OFF.

Replace ECM.

Turn ignition switch ON.

Locate and repair

Disconnect TSM/TSSM/HFSM at

Reprogram and perform

While wiggling harness,

intermittent short

connector [30]. Turn ignition key ON.

password learn.

check for voltage at terminal

to ground.

Is BUS Er present?

“3” of connector [91A].

Is voltage present at

any time?

YES

Is vehicle equipped

Replace TSM/TSSM/HFSM.

with a tachometer?

Perform password learn.

YES

Locate and repair

No problem

intermittent short

found.

Turn ignition key OFF. Disconnect tachometer

to voltage.

at connector [108]. Turn ignition key ON.

Is BUS Er present?

YES

Turn ignition key OFF. Disconnect

Replace tachometer.

speedometer at connector [39].

Check for continuity to ground at

terminal “3” of connector [91A].

Is continuity to ground present?

YES

Locate and repair short

Turn ignition switch ON.

to ground.

Check for voltage at terminal

“3” of connector [91A].

Is voltage present?

YES

Clear DTCs using speedometer self diagnostics.

See 4.6 SPEEDOMETER SELF DIAGNOSTICS.

Confirm proper operation with no check engine

Locate and repair short

Replace

lamp.

to voltage.

speedometer.

fc01204_en

2008 Sportster Diagnostics: Engine Management 4-35

FUEL SYSTEM ELECTRICALTEST

4.13

GENERAL

DIAGNOSTICS

With the Ignition Switch ON and the Engine Stop Switch at

PART NUMBER

TOOL NAME

RUN, the Electronic Control Module (ECM) will energize the

HD-41404-B

HARNESS CONNECTOR TEST KIT

system relay to complete the circuit to the in-tank fuel pump.

It will remain on as long as the engine is cranking or running,

HD-41404-B

HARNESS CONNECTOR TEST KIT

and the ECM is receiving ignition reference pulses from the

HD-43876

BREAKOUT BOX

CKP sensor. If there are no reference pulses, the ECM will de-

energize the system relay within 2 seconds after ignition is ON

Diagnostic Notes

or engine has stalled, or immediately after the ignition is shut

Each reference number below correlates to a circled number

OFF.

on the flow chart(s).

The fuel pump delivers fuel to the injectors. The pressure reg-

1. Turns on fuel pump if wiring is OK. If pump runs, problem

ulator is where the system pressure is controlled. Excess fuel

is in basic fuel delivery.

flow is bypassed into the fuel tank through the pressure regu-

lator. When the engine is stopped, the pump can be turned on

2. Use HARNESS CONNECTOR TEST KIT (Part No. HD-

by applying battery voltage and ground to the fuel pump con-

41404-B), gray probe and patch cord.

nector [141A]. See Figure 4-21. The fuel pump connector is

located forward of the fuse blocks. Improper fuel system pres-

3. Connect BREAKOUT BOX (Part No. HD-43876). See

sure may contribute to one or all of the following symptoms.

4.7 BREAKOUT BOX: EFI.

•

Engine cranks, but won't run.

4. Use HARNESS CONNECTOR TEST KIT (Part No. HD-

41404-B), purple pin probe and patch cord.

•

Engine cuts out (may feel like ignition problems).

•

Hesitation, loss of power and poor fuel economy.

ed02838

NOTE

After turning ignition OFF, you must wait 10 seconds before

turning the ignition back ON to get the fuel pump to reprime.

This time out period is necessary for the fuel pump and IAC to

reset.

ed02836

1. ECM fuse

2. Fuel pump fuse

3. Spare fuse (3; 1 empty)

4. Start relay

5. System relay

6. Ignition fuse

7. Instruments fuse

8. Accessories fuse

Figure 4-21. Fuel Pump Connector [141]

9. Battery fuse

10. Lights fuse

11. P & A ignition fuse

12. Open

13. MAXIFUSE

Figure 4-22. Fuses and Relays

4-36 2008 Sportster Diagnostics: Engine Management

em01202

Y/GN

[78A]

[78B]

87A

ECM

System

BE/GY

Relay

System relay

GN/O

W/BK

[119B]

Fuse Block

Front Injector

Y/GN

15 Amp

Front injector

W/Y

Fuel Pump

Fuse

Fuel

[84B]

[84A]

Y/GN

O/GY

Pump

Rear Injector

Y/GN

Rear injector

GN/GY

[141A]

[141B]

[85B]

[85A]

Y/GN

GND 1

[145A]

[145B]

15 Amp

30 Amp

ECM Fuse

MAXIFUSE

Battery

BE/GY

Switch power

W/BK

15 Amp

IGN Fuse

Battery

R/BK

Engine Case

Ground Point

[22B]

[33B]

[22A]

Ignition

Switch

Ground

Fuse Blocks

Ground

Spare

Lights

Open

Start relay

System relay

GND 1

15A

Fuel pump

Instr

Battery

Spare

Engine

Stop

15A

Switch

ECM

Ignition

Accessories

P&A Ign

15A

Top View

Figure 4-23. Fuel Pump Circuit

Table 4-13. Wire Harness Connectors

NO.

DESCRIPTION

TYPE

LOCATION

[22]

Right handlebar controls

6-place Molex

Under fuel tank

[33]

Ignition switch

Right side of frame behind neck

[78]

Electronic Control Module (ECM)

36-place Packard

Under seat

[84]

Front injector

2-place Delphi, black

Top of intake manifold

[85]

Rear injector

2-place Delphi, black

Top of intake manifold

[119]

System relay

5-place Amp

Under left side cover

2008 Sportster Diagnostics: Engine Management 4-37

Fuel System Electrical Test (Part 1 of 4)

Is ECM fuse OK?

YES

STOP

Is fuel pump fuse OK?

Go to 4.11 NO

ECM POWER.

YES

STOP

Check for 12 volts at terminals “1” (+) and “4” (-) of

fuel pump connector [141A] during first 2-3 seconds

after key ON.

Go to Fuel System

Voltage present?

Electrical Test

(Part 4 of 4).

YES

Check for corroded connections

Check for continuity to

or loose connectors between

ground on [141A] terminal “4”.

fuel pump and pump connector

Continuity present?

[141B].

Poor connections?

YES

Locate and repair

open on (BK) wire

Repair as

With key OFF, check for open

necessary.

pump circuit. Connect ohmmeter

STOP

between [141A]

between connector [141B] (O/GY) wire

and ground.

and connector [141B] (BK) wire.

Continuity present?

Go to Fuel System

Electrical Test

(Part 2 of 4).

YES

Check pump

Remove fuel pump.

connections and repair

Check for continuity

as required. If good,

across fuel pump

replace fuel pump.

terminals.

Does meter read

continuity?

YES

Check for opening

Replace

in wiring.

fuel pump.

fc01205_en

2008 Sportster Diagnostics: Engine Management 4-39

Fuel System Electrical Test (Part 2 of 4)

Continued from Fuel System Electrical Test (Part 1 of 4).

Is 12 volts present at terminal “87” of system relay (with relay

in place) during first two seconds after key on?

YES

Is 12 volts present at terminal

“30” of system relay?

Locate and repair open between

terminal “1” of [141A] and terminal “87”

of system relay.

YES

With ignition and Engine Stop

Locate and repair open on (BE/GY) wire

Switch on, is 12 volts present at

between ECM fuse and terminal “30” of

terminal “86” of system relay.

system relay.

YES

Locate and repair open on

STOP

(W/BK) wire to system relay.

Go to Fuel System

Electrical Test

(Part 3 of 4).

fc01206_en

4-40 2008 Sportster Diagnostics: Engine Management

Fuel System Electrical Test (Part 3 of 4)

Continued from Fuel System Electrical Test (Part 2 of 4).

Probe system relay connector Terminal 85 with a test light to 12 volts.

Does test light illuminate for 2 seconds after key ON?

YES

Replace System

Probe Breakout Box terminal “2” with a

Relay.

test light connected to 12 volts.

Does test light illuminate for 2 seconds

after key ON?

YES

Locate and repair open

Replace ECM. Reprogram

on (GN/O) wire.

and learn password.

fc01207_en

2008 Sportster Diagnostics: Engine Management 4-41

Fuel System Electrical Test (Part 4 of 4)

Continued from Fuel System Electrical Test (Part 1 of 4).

Check for intermittent short to ground on terminal “1” of

connector [141A].

Short to ground present?

YES

Repair short to

Reconnect fuel pump connector [141]

ground on (O/GY) wire

and install fuel pressure gauge.

and replace fuse.

See 4.15 FUEL PRESSURE TEST.

With fuel system intact and battery fully charged,

remove fuel pump fuse.

Connect DVOM across fuel pump fuse terminals using probe.

Place male positive probe in H slot. Turn key ON. With pump running,

check current and fuel pressure. Is current draw under 4.5

amps and fuel pressure between 55-62 PSI (380-425 kPA)?

YES

Replace fuse.

Substitute known good relay for system relay. Test

for current draw across fuel pump fuse.

Is current draw less than 4.5 amps?

YES

Current draw now

Replace Fuel

in range. Replace

Pump and replace fuse.

System Relay and replace fuse.

fc01208_en

4-42 2008 Sportster Diagnostics: Engine Management

SYSTEM RELAY CHECK

4.14

GENERAL

ed02845

System Relay

See Figure 4-24. With the ignition switch ON and the engine

stop switch at RUN, the ECM will energize the system relay to

complete the circuit to the in-tank fuel pump, ignition coil, and

fuel injectors. They will remain powered as long as the engine

is cranking or running, and the ECM is receiving ignition refer-

ence pulses from the CKP sensor. If there are no reference

pulses, the ECM will de-energize the system relay within 2

seconds after ignition is ON or engine has stalled, or immedi-

ately after the ignition is shut OFF.

Table 4-14. Code Description

DTC

DESCRIPTION

P1001

System relay coil open/low

Figure 4-24. System Relay

P1002

System relay coil high/shorted

P1003

System relay contacts open

DIAGNOSTICS

P1004

System relay contacts closed

PART NUMBER

TOOL NAME

HD-41404-B

HARNESS CONNECTOR TEST KIT

HD-43876

BREAKOUT BOX

Diagnostic Notes

Each reference number below correlates to a circled number

on the flow chart(s).

1. Use HARNESS CONNECTOR TEST KIT (Part No. HD-

41404-B), gray pin probe and patch cord.

2. Connect BREAKOUT BOX (Part No. HD-43876) to ECM.

See 4.7 BREAKOUT BOX: EFI.

2008 Sportster Diagnostics: Engine Management 4-43

em01203

[78A]

[78B]

Y/GN

ECM

87A

System

BE/GY

Relay

System relay

GN/O

W/BK

[119B]

Fuse Block

15 Amp

Front Injector

Fuel Pump

Fuse

Y/GN

O/GY

Fuel

Front injector

W/Y

Y/GN

O/GY

Pump

[84B]

[84A]

Rear Injector

Y/GN

[141A]

[141B]

Rear injector

GN/GY

GND 1

[85B]

[85A]

Ignition

Y/GN

Coil

[145A] [145B]

Y/GN

Rear coil

Y/BE

Front coil

BE/O

[83B] [83A]

15 Amp

30 Amp

ECM Fuse

MAXIFUSE

Battery

BE/GY

Switch power

W/BK

15 Amp

IGN Fuse

R/BK

Battery

[33B]

Engine Case

Ignition Switch

Ground Point

[22B]

[30B]

[22A]

[30A]

Ground

Engine Stop

GND 1

Switch

TSM/TSSM/HFSM

Figure 4-25. System Relay Circuit

Table 4-15. Wire Harness Connectors

NO.

DESCRIPTION

TYPE

LOCATION

[22]

Right handlebar controls

6-place Molex

Under fuel tank

[30]

TSM/TSSM/HFSM

12-place Deutsch, gray

Under battery

[33]

Ignition switch

Right side of frame behind neck

[78]

Electronic Control Module (ECM)

36-place Packard

Under seat

[83]

Ignition coil

4-place Delphi

Back of coil

[84]

Front injector

2-place Delphi, black

Top of intake manifold

[85]

Rear injector

2-place Delphi, black

Top of intake manifold

4-44 2008 Sportster Diagnostics: Engine Management

Harley Davidson 2008 Sportster Models. Electrical Diagnostics Manual - page 10