Harley Davidson 2008 Touring Models. Electrical Diagnostics Manual — page 9
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NOTE
clutch disengaged (pulled in) at speeds greater than
10
MPH (16 km/h) for more than 60 seconds (coasting down a
DTCs B1154, B1155 may occur if the vehicle is ridden with
long mountain road).
3-72 2008 Touring Diagnostics: TSM/HFSM
HOME
Clutch Switch Short-to-Ground: DTC B1154
NOTE
DTCs B1145, B1155 may occur if the
vehicle is ridden with clutch disengaged
(pulled in) at speeds greater than 10 MPH
(16 km/h) for more than 60 seconds
(coasting down a long mountain road).
Connect Breakout Box HD-42682 to the main harness, leaving
the connector [30] disconnected. Measure continuity between
1
terminal “10” (Gray) (+) and terminal “12” (Gray) (-).
Is continuity present?
YES
NO
Disconnect connector [24]. Measure
continuity between terminal 10 (Gray)
Replace HFSM. Learn password
(+) and terminal 12 (Gray) (-)
2
and perform set-up.
on Breakout Box.
Is continuity present?
6791
YES
NO
Locate and repair short to ground on (BK/R)
Locate and repair short to ground in
wire in main wiring harness between
left handlebar switch wiring.
connectors [30B] and [24B).
fc01120_en
5861
5861
2008 Touring Diagnostics: TSM/HFSM 3-73
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Neutral Switch Short-to-Ground: DTC B1155
With the transmission in 1st or 2nd gear, connect
1
Breakout Box HD-42682 to the main harness, leaving
the HFSM disconnected. Measure continuity
3
between terminal “4” (Gray) and terminal “12” (Gray).
Is continuity (less than 10 ohms) present?
YES
NO
Disconnect Neutral Switch [131]. Measure
continuity between terminal “4” (Gray) and
Replace HFSM. Learn password
3
2
terminal “12" (Gray) on Breakout Box.
and perform set-up.
Is continuity (less than 10 ohms) present?
6791
YES
NO
Locate and repair short to
fc01121_en
Replace Neutral
ground on (TN) wire in
Switch.
main wiring harness.
5157
5862
3-74 2008 Touring Diagnostics: TSM/HFSM
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DTC U1016,
U1255
3.24
gnostic Trouble Code (DTC) U1016 indicates that the ECM is
GENERAL
not capable of sending this state of health message. A DTC
The serial data connector provides a means for the Electronic
U1255 indicates that no messages were present during power
Control Module (ECM), TSM/HFSM, and speedometer to
up of the current key cycle. A DTC U1016 indicates that there
communicate their current status. When all operating para-
was communication on the data bus since power up, but
meters on the serial data bus are within specifications, a state
communication was lost or interrupted during that key cycle.
of health message is sent between the components. A Dia-
Table 3-25. Code Description
DTC
CONDITION
START WITH FLOW CHART
U1016
Loss of all ECM serial data
Loss of ECM Serial Data: DTC U1016; Serial Data Error/Missing
Message: DTC U1255
U1255
Serial data error
Loss of ECM Serial Data: DTC U1016; Serial Data Error/Missing
Message: DTC U1255
1. Connect BREAKOUT BOX (Part No. HD-42682) (gray)
DIAGNOSTICS
between TSM/HFSM connector [30A] and wire harness
PART NUMBER
TOOL NAME
connector [30B]. See 3.12 BREAKOUT BOX: TSM/HFSM.
HD-42682
BREAKOUT BOX
2. Connect BREAKOUT BOX (Part No. HD-43876) between
wire harness and ECM. See 4.7 BREAKOUT BOX: EFI.
HD-43876
BREAKOUT BOX
Diagnostic Notes
Each reference number below correlates to a circled number
on the flow chart(s).
2008 Touring Diagnostics: TSM/HFSM 3-75
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Radio
em01111
15A
[1A][1B]
Instruments
9
Fuse
To
[27A]
O
1
1
O
R/BK
ignition
[27B]
9
switch
Main to interconnect
harness
LGN/V
13
13
LGN/V
To ignition fuse
GY
1
2
3
12
[30B]
1
2
5
7
[39B]
1
2
5
7
[108B]
1
2
3
12
[30A]
1
2
5
7
[39A]
1
2
5
7
[108A]
TSM/TSSM/HSFM
Speedometer
Tachometer
ABS
9
1
[166A]
9
1
[166B]
1
BK/GN
2
Data Link
LGN/V
3
Connector
GY
4
[91A]
[2B]
4
12
Main to
interconnect
[2A]
4
12
harness
69
[78B]
69
[78A]
1
2
3
5
[20B]
To
battery
fuse
ECM
Figure 3-31. Serial Data Circuit: FLHX, FLHT/C/U, FLTR
Table 3-26. Wire Harness Connectors
NO.
DESCRIPTION
MODEL
TYPE
LOCATION
[1]
Main to interconnect har-
FLHT/C/U
16-place Molex (Black)
Inner fairing - right radio support bracket
ness
FL
TR
16-place Molex (Black)
Inner fairing - below radio (right side)
[2]
Main to interconnect har-
FLHT/C/U
12-place Molex (Gray)
Inner fairing - right fairing support bracket
ness
FL
TR
12-place Molex (Gray)
Inner fairing - below radio (right side)
[20]
Console harness
All
16-place Molex
Under seat
[27]
Radio
All
23-place Amp (T
yco)
Inner fairing - back of radio (right side)
[30]
TSM/HFSM
All
12-place Deutsch
Cavity in crossmember at rear of battery
box (under seat)
[39]
Speedometer
FLHT/C/U
12-place Packard
Inner fairing (back of speedometer)
FL
TR
12-place Packard
Under bezel (back of speedometer)
[78]
Electronic Control Module
All
73-place Packard
Under left side cover
(ECM)
3-76 2008 Touring Diagnostics: TSM/HFSM
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Table 3-26. Wire Harness Connectors
NO.
DESCRIPTION
MODEL
TYPE
LOCATION
[91]
Data link connector
All
4-place Deutsch
Under left side cover
[108]
T
achometer
FLHT/C/U
12-place Packard
Inner fairing (back of tachometer)
FLTR
12-place Packard
Under bezel (back of tachometer)
[166]
ABS module
All
12-place Molex
Under right side cover
em01112
1
2
3
12
[30B]
1
2
3
12
[30A]
TSM/TSSM/HSFM
1
2
5
7
[39B]
1
2
5
7
[39A]
Speedometer
15A
Instruments
[166B]
9
1
Fuse
To
To
[166A]
9
1
BN/GY
battery
ignition
R/BK
O
fuse
switch
To
ABS
ignition
GY
fuse
1
BK/GN
2
Data Link
LGN/V
3
Connector
GY
4
[91A]
[20B]
1
2
3
5
[78B]
69
[78A]
69
ECM
Figure 3-32. Serial Data Circuit: FLHR/C/S
2008 Touring Diagnostics: TSM/HFSM 3-77
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Table 3-27. Wire Harness Connectors
NO.
DESCRIPTION
TYPE
LOCATION
[20]
Console harness
16-place Molex
Under seat
[30]
TSM/HFSM
12-place Deutsch
Cavity in crossmember at rear of bat-
tery box (under seat)
[39]
Speedometer
12-place Packard
Under console (back of speedometer)
[78]
Electronic Control Module (ECM)
73-place Packard
Under seat
[91]
Data link connector
4-place Deutsch
Under left side cover
[166]
ABS module
20-place Molex
Under right side cover
3-78 2008 Touring Diagnostics: TSM/HFSM
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Loss of ECM Serial Data: DTC U1016; Serial Data Error/Missing Message: DTC U1255
Can you read Electronic Control Module (ECM)
hardware part number?
See 3.11 SPEEDOMETER SELF DIAGNOSTICS.
YES
NO or “No Rsp”
While wiggling harness, check continuity
1
between terminal “3” (Gray) of TSM/
1
Check continuity between terminal “3”
(Gray) of TSM/HFSM Breakout Box and
HFSM Breakout Box and terminal “5” of
terminal “5” of ECM Breakout Box.
2
ECM Breakout Box.
2
Continuity present?
Continuity present?
YES
NO
YES
NO
Clear DTCs. Test ride.
Repair intermittent
Replace ECM.
Repair open on
Did DTC U1016 return?
on (LGN/V) wire.
Reprogram and learn password
(LGN/V) wire.
YES
NO
Clear DTCs using speedometer self diagnostics.
Replace ECM.
See 3.11 SPEEDOMETER SELF DIAGNOSTICS.
Reprogram and learn
No trouble found.
Confirm proper operation with no check engine
password.
lamp.
fc01122_en
2008 Touring Diagnostics: TSM/HFSM 3-79
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DTC U1300,
U1301 OR BUS ER
3.25
illuminate. The odometer will read "BUS Er" in this condi-
DIAGNOSTICS
tion.
The typical serial data voltage range is 0 volts (inactive) to 7
•
DTCs P1009 and P1010 may accompany DTCs U1300
volts (active). Due to the short pulse, voltages will be much
and U1301.
lower on a DVOM. In analog mode, a DVOM reading serial
data will show continuous voltage when active, typically 0.6-
Diagnostic Notes
0.8 volts. The range for acceptable operations is 0-7.0 volts.
If a U1300, U1301 or "BUS Er" is present, perform diagnostic
Diagnostic Tips
procedures listed in 4.12 STARTS, THEN STALLS.
•
If serial data is shorted, these Diagnostic Trouble Codes
(DTCs) will automatically cause the check engine lamp to
3-80 2008 Touring Diagnostics: TSM/HFSM
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TSM/HFSM:
PASSWORD LEARN
3.26
GENERAL
PASSWORD LEARNING
If the ECM or TSM/HFSM is faulty, follow the instructions in
To perform password learning procedure, refer to Table 3-29.
the Service Manual for ECM or TSM/HFSM replacement. Then,
When finished, continue with all instructions under 3.3 H-DSSS
to determine if password learn is necessary, refer to Table 3-28.
ACTUATION.
Always perform all appropriate instructions under 3.3 H-DSSS
Table 3-28. Password Learn
ACTUATION after TSM/HFSM replacement or removal.
DEVICE REPLACED
IS PASSWORD LEARN
NOTE
NECESSARY?
Fob assignment must be performed at an authorized Harley-
ECM
Yes
Davidson dealer using Digital Technician.
TSM
No *
TSM/HFSM
Yes
* If a TSM has been replaced by a HFSM, or a HFSM has
been replaced by a TSM, password learn is necessary.
Table 3-29. Setting TSM/HFSM and ECM Password
NO.
ACTION
CONFIRMATION
NOTES
Ignition must be turned off for at least 15 seconds.
With Ignition Switch turned off,
Check Engine Lamp and
Security Lamp will be off.
1
Install new TSM/HFSM or ECM. Perform all steps under
3.3 H-DSSS ACTUATION.
2
Set Engine Stop Switch to RUN.
3
Turn Ignition Switch ON.
Verify Check Engine Lamp
TSM/HFSM enables start
and Security Lamp illuminate
relay.
and then turn off.
4
Attempt normal start one time.
Engine starts and stalls.
Password has not been
Check Engine Lamp illumin-
learned. ECM sets DTC
ates and stays on.
P1009.
5
Wait
ten seconds. Security Lamp will illuminate and stay
Security Lamp illuminates.
ECM enters Password
on.
Learning mode for ten
minutes. Do not cycle Ignition
Switch or interrupt vehicle
power or Password Learn will
be unsuccessful.
6
Wait until Security Lamp turns off
This takes ten minutes.
7
Quickly
(within one second) turn Ignition Switch
ECM must not be allowed to
OFF-ON.
shutdown.
8
Wait until Security Lamp turns off
This takes ten minutes.
9
Quickly
(within one second) turn Ignition Switch
ECM must not be allowed to
OFF-ON.
shutdown.
10
Wait until Security Lamp turns off
This takes ten minutes.
11
Quickly
(within one second) turn Ignition Switch
ECM must not be allowed to
OFF-ON.
shutdown.
12
Turn Ignition Switch OFF. Wait 15 seconds before
turning Ignition Switch on. Turn Ignition Switch ON and
start engine to confirm successful Password Learn
procedure. Clear DTCs.
13
Perform all steps under 3.3 H-DSSS ACTUATION.
2008 Touring Diagnostics: TSM/HFSM 3-81
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HFSM MAINTENANCE
3.27
GENERAL
SMART SIREN (IF INSTALLED)
The HFSM uses a battery in the fob and siren. These are the
Schedule
only parts requiring periodic maintenance.
The siren's internal 9 volt battery is rechargeable and does not
HANDS-FREE FOB
need to be replaced on a regular basis. Battery life under
normal conditions is approximately three to six years.
Schedule
NOTES
Replace the fob battery every year.
•
See Figure 3-34 and Figure 3-35. Early style siren will
Battery Replacement
work with both TSSM and HFSM. Late style siren will only
work with HFSM.
1. See Figure 3-33. Open the fob case.
•
The internal siren battery may not charge if the vehicle's
a. Place a thin blade in the thumbnail slot (1) between
battery is less than 12.5 volts.
the 2 halves of the case.
b. Slowly twist the blade.
Battery Replacement: Early Style Siren
1.
Disarm system and remove siren.
2. Replace battery (2).
2.
See Figure 3-34. Remove battery cover.
a. Remove the original battery.
a. Place the siren module on a flat and sturdy table with
b. Install a new battery with the positive (+) side down.
the potted section (area with epoxy covering circuit
Use a Panasonic® 2032 or equivalent.
board) facing up and towards you.
3. With O-ring (3) in place, align case halves and snap case
b. Position a knife blade at a 45 degree angle to the long
halves together.
side of the siren case. Insert the knife blade between
the siren case and battery cover at one of the two
accessible corners of the battery cover. Keep the
ed02055
1
blade slightly higher towards the battery cover as this
helps keep the blade away from the battery seal.
c. Slowly twist the blade towards the battery cover and
3
the cover will pop off.
NOTES
•
For protection against corrosion, battery terminals and
1
battery clip are covered with a special grease. Do not wipe
away this substance. Apply all available existing grease
to terminals on new battery.
•
Only a 9 volt nickel metal hydride battery should be used
in the siren.
3.
Replace battery by removing old battery from polarized
2
battery clip. Install a new 9 volt nickel metal hydride bat-
tery.
4.
Reinstall battery cover.
a. Carefully replace the rubber seal.
b. Align battery cover with case placing round corners
on cover away from connector [142A]. Snap cover
into place.
1.
Thumbnail slot
2.
Battery (Panasonic 2032)
5.
Install siren and check operation. If siren is working prop-
3.
O-ring
erly, it will respond with two chirps after receiving the arm
command.
Figure 3-33. Open Fob: HFSM
Battery Replacement: Late Style Siren
1. Disarm system and remove siren.
2. See Figure 3-35. With a small screwdriver or pick, push
the catches (1) in through the two slots (2) in the end of
the siren to release the battery cover (3).
3-82 2008 Touring Diagnostics: TSM/HFSM
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NOTES
ed02958
•
For protection against corrosion, battery terminals and
battery clip are covered with a special grease. Do not wipe
4
away this substance. Apply all available existing grease
to terminals on new battery.
2
•
Only a 9 volt nickel metal hydride battery should be used
1
in the siren.
3. Replace battery (4) by removing old battery from polarized
battery clip.
4. Recharge and re-install or install a new 9 volt nickel metal
hydride battery.
6
5. Reinstall battery cover (3).
3
5
a. Carefully replace the rubber seal (5) on the cover.
b. Align battery cover with case placing round corners
1. Catch
on cover away from connector [142A] (6).
2. Slot
3. Cover
c. Snap cover into place.
4.
9 volt battery
5.
Rubber seal
6. Install siren and check operation. If siren is working prop-
6.
Connector [142A]
erly, it will respond with two chirps after receiving the arm
command.
Figure 3-35. Siren Battery Compartment (Late Style Siren)
ed03016
1
2
3
1. Cover
2. Battery
3. Connector [142A]
Figure 3-34. Battery Compartment (Early Style Siren)
2008 Touring Diagnostics: TSM/HFSM 3-83
NOTES
3-84 2008 Touring Diagnostics: TSM/HFSM
TABLE OF CONTENTS
SUBJECT
PAGE NO.
4.1 SPECIFICATIONS
4-1
4.2 EFI SYSTEM
4-3
4.3 EFI DIAGNOSTIC INTRODUCTION
4-7
4.4 CHECKING FOR DIAGNOSTIC TROUBLE CODES: EFI
4-8
4.5 INITIAL DIAGNOSTIC CHECK: EFI
4-11
4.6 SPEEDOMETER SELF-DIAGNOSTICS
4-20
4.7 BREAKOUT BOX: EFI
4-22
4.8 WIGGLE TEST
4-23
4.9 INTAKE LEAK TEST
4-24
4.10 ENGINE CRANKS, BUT WILL NOT START
4-26
4.11 NO ECM POWER
4-33
4.12 STARTS, THEN STALLS
4-38
4.13 FUEL SYSTEM ELECTRICAL TEST
4-44
4.14 SYSTEM RELAY FAULT
4-52
4.15 FUEL PRESSURE TEST
4-61
4.16 MISFIRE AT IDLE OR UNDER LOAD
4-66
4.17 COMBUSTION ABSENT/INTERMITTENT
4-72
4.18 DTC P0107, P0108, P0112, P0113
4-77
4.19 DTC P0117, P0118
4-85
4.20 DTC P0120, P0122, P0123, P0220, P0222, P0223
4-89
4.21 DTC P0131, P0132, P0134, P0151, P0152, P0154
4-96
4.22 DTC P0261, P0262, P0263, P0264
4-102
4.23 DTC P0373, P0374
4-108
4.24 DTC P0444, P0445
4-111
4.25 DTC P0501, P0502
4-119
4.26 DTC P0562, P0563
4-123
4.27 DTC P0572
4-130
4.28 DTC P0577
4-136
4.29 DTC P0603, P0605
4-145
4.30 DTC P0641, P0651
4-146
4.31 DTC P1009, P1010
4-152
4.32 DTC P1270
4-158
4.33 DTC P1351, P1352, P1354, P1355
4-160
4.34 DTC P1475, P1477, P1478
4-165
4.35 DTC P1501, P1502
4-172
4.36 DTC P1510, P1511, P1512
4-177
4.37 DTC P1514
4-179
4.38 DTC P1600
4-181
4.39 DTC P2100, P2101, P2102, P2103
4-183
4.40 DTC P2105
4-187
4.41 DTC P2107
4-189
4.42 DTC P2119
4-193
4.43 DTC P2122, P2123, P2127, P2128
4-195
4.44 DTC P2135, P2138
4-199
4.45 DTC P2176
4-203
4.46 DTC U1064
4-205
4.47 DTC U1097
4-210
NOTES
HOME
SPECIFICATIONS
4.1
SPECIFICATIONS
Table 4-2. Fuse Ratings
General
ITEM
PROTECTED (SYSTEM)
RATING
COLOR
The following specifications are provided as general electrical
NO.
CIRCUIT RELAY
(AMPS)
information for ignition components, and fuse/relay information.
1
Accessory
15A
Blue
See Figure 4-1 for location of fuses and relays.
2
Battery
15A
Blue
Table 4-1. General Specifications
3
P&A
15A
Blue
4
Radio Power/Siren
15A
Blue
IGNITION
DATA
5
ECM Power
15A
Blue
Spark timing advance
-4° - 45° BTDC (range)
12° - 24° BTDC @1000 RPM
6
System Relay
--
--
Idle speed
1000 ± 50 RPM
7
Start Relay
--
--
Spark plug size
12 mm
8
Engine Control
15A
Blue
Spark plug gap
0.038-0.043 in
9
MAXIFUSE
40A
Orange
0.97-1.09 mm
10
Ignition
15A
Blue
Spark plug type
Harley-Davidson
11
Spare
15A
Blue
No. 6R12 (no substitute)
12
Lights
15A
Blue
Ignition
coil primary resistance
0.3-0.5 ohms
13
Headlamp
15A
Blue
Ignition coil secondary resist-
2500-3500 ohms
14
ABS
30A
Green
ance
15
Brake Relay
--
--
16
Instruments
15A
Blue
17
Fuel Pump
15A
Blue
18
Radio Memory
15A
Blue
19
Brake/Cruise
15A
Blue
2008 Touring Diagnostics: Engine Management 4-1
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ed01260
1
2
3
4
19
5
18
6
7
17
8
16
9
15
14
13
12
11
10
1. Accessory
11. Spare
2. Battery
12. Lights
3. P&A
13. Headlamp
4. Radio power/Siren (if equipped)
14. ABS (if equipped)
5. ECM power
15. Brake relay
6. System relay
16. Instruments
7. Start relay
17. Fuel pump
8. Engine control
18. Radio memory (if equipped)
9. MAXIFUSE
19. Brake/Cruise
10. Ignition
Figure 4-1. Fuse and Relay Locations
4-2 2008 Touring Diagnostics: Engine Management
HOME
EFI SYSTEM
4.2
TMAP (and other sensors) to adjust ignition timing and fuel to
GENERAL
achieve optimum engine performance.
PART NUMBER
TOOL NAME
The ET sensor contains a thermistor element that varies the
HD-44750
DIGITAL TECHNICIAN
sensor's internal electrical resistance. As the engine temper-
ature changes the resistance in the ET sensor changes. The
See Figure 4-2. The engine management system consists of
ECM monitors this resistance to compensate for various
the following components:
operating conditions.
•
Electronic Control Module (ECM)
The TGS, mounted on the right hand side of the handlebar,
•
Crankshaft Position (CKP) Sensor
houses two internal (opposing) Hall-effect sensors for operator
control of the engine's throttle. The opposing operation of the
•
Temperature/Manifold Absolute Pressure (TMAP) Sensor
sensors ensures that repositioning of the throttle twist grip,
•
Engine Temperature (ET) Sensor
forward and/or back, is accurately reported to the ECM. As the
throttle is operated, position changes are reported to the ECM
•
Twist Grip Sensor (TGS)
that controls the corresponding movement of the throttle plate
•
Throttle Control Actuator (TCA)
by the TCA.
•
Vehicle Speed Sensor (VSS)
The TCA, mounted to the intake manifold, operates the throttle
plate internal to the induction module on the throttle engine.
•
Oxygen (O2 ) Sensors
Two corresponding Throttle Position (TP) sensors receive input
•
Active Exhaust Actuator (HDI only)
from the ECM, corresponding to the position of the TGS, to
adjust the throttle plates position, accordingly. The ECM
•
Turn Signal Module (TSM) or optional module with integ-
incorporates an H-Bridge and WatchDog microprocessor, used
rated Security System
as safety devices, to control inadvertent or unexpected opera-
•
Ignition Coil
tions/conditions of the TCA and TGS.
The VSS is mounted in the transmission, beneath the starter
•
Fuel Pump
motor. The VSS is a Hall-effect sensor, used to monitor and
•
Fuel Injector
report vehicle speed based upon a reference point on the 5th
gear of the transmission. A 5.0 volt reference signal and
•
Purge Solenoid
common ground circuitry are provided to the VSS, from the
The ECM is a solid state device mounted under the seat and
ECM. The VSS communicates electrical pulses to the ECM,
sealed to prevent contamination from dust/dirt, water and oil.
where vehicle speed is calculated and sent to the speedometer
The ECM controls engine performance based upon input sup-
as a serial data message.
plied to the ECM primarily from the ET, CKP, TMAP, TGS, O2
The O2 Sensor diagnostic codes may be seen during the
and the VSS sensors and other additional low-voltage circuits
vehicle break-in period. The sensor diagnostic codes will not
and components between the battery and ignition coil.
illuminate the check engine lamp for current or historic codes
•
The ECM controls the dwell time for the ignition coil,
and will only be indicated by DIGITAL TECHNICIAN (Part
providing optimum ignition circuit performance for all
No. HD-44750) or Speedometer Self Diagnostics. If the dia-
engine speeds/load conditions. Optimizing the ignition
gnostic codes are reported during the break-in period, clear or
system allows the ECM to control/vary engine timing (as
ignore the code(s) until the break-in period is complete.
needed) from 0° to 50° BTDC.
There are two O2
Sensors, one mounted in each of the two
•
The ECM also has built-in protection against transient
exhaust pipes, to monitor the exhaust gas air/fuel mixture ratio.
voltages, continuous reverse voltages and inadvertent
Each O2 Sensor samples the exhaust oxygen content and
damage resulting from jump starts. The ECM is a non-
provides specific resistance (across the sensor terminals) to
repairable item and must be replaced when it fails.
the ECM. The ECM continuously adjusts the air/fuel mixture
The CKP sensor is located in the front left side of the crank-
to maintain an optimal air/fuel mixture. When properly mixed,
case. The CKP generates an AC signal that is sent to the ECM
the O2Sensor voltage(s) will measure approximately 0.45 volt,
where it is used to reference engine position (TDC) and speed.
each.
It functions by taking readings off the 30 teeth on the left side
The Active Exhaust System (HDI only) utilizes an actuator
flywheel (two teeth are missing to establish a reference point).
valve located in the rear exhaust pipe that is connected via a
The TMAP sensor is a dual-purpose sensor, mounted in the
cable. The valve position automatically adjusts to enhance
top of the intake manifold. One portion is used to measure
engine performance.
temperature and the other portion is used to measure the air
The TSM/TSSM/HFSM contain a Bank Angle Sensor (BAS),
pressure inside the intake manifold. The temperature part of
a safety device which shuts off the fuel injection if the vehicle
the TMAP contains thermistor element, used to measure the
is leaned more than 45° (either direction) from the upright
temperature of the air entering the intake manifold. The MAP
position. If the BAS is actuated, the vehicle must be reposi-
portion of this sensor is used to measure the difference
tioned upright (vertical) and the Ignition Switch must be turned
between atmospheric pressure and vacuum pressure, within
off and turned back to the IGNITION position before the engine
the intake manifold. The ECM processes information from the
is capable of being restarted.
2008 Touring Diagnostics: Engine Management 4-3
HOME
The ignition coils, mounted forward on the chassis beneath
to the fuel injector, which opens and releases fuel into the
the fuel tank, provide high voltage output to the spark plugs.
air intake manifold.
Each ignition coil is made up of a primary winding where low
•
The ECM grounds the system relay, which supplies voltage
voltage input creates a high voltage spike in the collapsible
to the fuel injectors. Each injector is protected and
field of the secondary winding. The front and rear coils are fired
grounded by the ECM, through a common point ground
independently (one cylinder at a time - no waste spark system).
within the ECM.
The ignition coil contains an extra terminal where the ECM
monitors the current of the secondary winding for knock
The purge solenoid (working with the charcoal canister) allows
detection and combustion diagnostics.
the vapors to escape back into the throttle body. The purge
solenoid is timed to the throttle position but is disabled at
The fuel pump, mounted inside the fuel tank on the vehicle, is
startup, low engine temperature, low engine speed or low
a submersible pump used to provide fuel to the fuel injectors.
vehicle speed. The power for the purge solenoid comes from
The fuel pump is protected by an in-line 15 amp replaceable
the system relay. The ECM provides the path to ground to
fuse.
trigger the purge solenoid.
•
When the Ignition Switch is in the IGNITION position and
the Engine Stop Switch is in the RUN position, the ECM
Heat Management System
grounds the system relay supplying voltage to the fuel
To improve rider comfort on all 2008 stock Touring model
pump.
motorcycles, an optional heat management system may be
enabled through DIGITAL TECHNICIAN (Part No. HD-44750).
•
The fuel pump continues running during cranking and
After being enabled, the heat management system improves
normal running operation, as long as the ECM is receiving
rider comfort by turning off the rear cylinder fuel injector
input from the CKP sensor. If no CKP pulses are received,
whenever the following conditions exist:
the ECM will shut off the system relay within 2.0 seconds
after the ignition is turned on, the engine has stalled or
•
High engine temperature.
immediately after the engine is shut off.
•
Engine at idle speed.
•
The fuel pump contains a pressure regulator which main-
•
Low vehicle speed.
tains consistent fuel pressure to each of the fuel injectors.
Excess fuel flow is bypassed into the fuel tank by the
•
Clutch lever pulled in or transmission in neutral.
pressure regulator.
As the engine maintains idle speed, the rear cylinder functions
There are two fuel injectors, mounted to the intake manifold.
as an "air pump," helping to cool the engine. This continues
The ECM controls the injectors by actuating the injector
until one of the above listed conditions is no longer met, then
solenoid enabling fuel to be metered through the injector and
the rear cylinder fires normally again.
atomized into the intake manifold.
When the engine is in heat management mode, a noticeable
•
The injectors are timed to the combustion cycle and are
difference in idle may be accompanied by a unique exhaust
triggered sequentially. When the ECM determines that
odor. While these conditions are normal, a rider or technician
fuel is required, the ECM supplies a short duration ground
unaware of the heat management system may incorrectly
assume an idle problem is present.
TROUBLESHOOTING
See the diagnostic charts for troubleshooting information.
4-4 2008 Touring Diagnostics: Engine Management
HOME
Twist Grip Sensor
Engine
em00086
TMAP
Temp
Switch
Sensor
Throttle Control
Crank Pos.
[141A]
Actuator
Sensor
FUELPUMP
A
B
C D
[224A]
6
5
4
3
21
B D
Fuel Pump
[141B]
[224B]
[90A]
A B
[80A]
1
2
3 4
[91A]
[211A]
Assembly
Data
A B
(GY)
[90B]
1 2 3 4
6
5
4
3
2
1
in Tank
Link
[80B]
[79A]
12
1 2 3
6
5
4
3
2
1
[13B]
Fuel Tank
[79B]
12
[204A]
6
5
4
3
21
[211B]
Harness
1
4
[204B]
6
5
4
3
2
1
1
4
[13A]
Fuel
Y/GN
Electronic Control
Pump
Module
30(3)
87(5)
Fuse
[78A]
[78B]
(ECM)
86(1)
85(2)
15 Amp
Purge solenoid
20
20
GY/Y
System
MAXIFUSE
Exhaust actuator
21
21
V/O
[83B] [83A] Ignition Coil
Relay
40 Amp
Rear injector
23
23
GN/GY
[5B]
MAP sensor input
24
24
V/W
Y/GN
A
A
Power
B
A
GY/BE
B
B
Ion Sense
ECM
Front injector
28
28
W/Y
Y/BE
C
C
Coil Rear
BE/O
D
D
Coil Front
Fuse
Throttle actuator control HI
29
29
BK/O
Throttle actuator control LO
30
30
BK/PK
15 Amp
Ion sense
33
33
GY/BE
[84B]
[84A]
Battery
Throttle pos sensor 2
36
36
BN/R
Throttle pos sensor 1
37
37
BN/V
Front
Y/GN
A
A
Exhaust feedback
38
38
V/BE
[33B]
Y/W
B
B
Injector
Twist grip sensor 2
39
39
V/Y
[85B]
[85A]
Vehicle speed input
40
40
W/GN
Ignition
1
Fuse
R
2
Crank position sensor
43
43
BK
3
Y/GN
A
A
Rear
R/BK
Rear O2 sensor
46
46
PK/GN
B
B
15 Amp
GN/GY
Injector
Ignition
Intake air temperature
49
49
LGN/Y
Switch
5V sensor power 1
50
50
BN/O
[95B] [95A]
Engine
(33A)
Engine temperature
51
51
PK/Y
Control
12 V power
52
52
Y/GN
GY/Y
Fuse
Rear coil
53
53
Y/BE
Y/GN
15 Amp
Front coil
54
54
BE/O
Purge
Jiffy stand sensor
56
56
GN/BN
Solenoid
Twist grip sensor 1
59
59
BE/GN
5V sensor ground 1
61
61
BK/W
[65B] [65A]
5V sensor ground 2
62
62
BK/GY
Crank pos sensor (+)
63
63
R
BN/O
1
1
Vehicle speed ground
64
64
BK/Y
W/GN
2
2
Front O2 sensor
66
66
PK/O
BK/Y
3
3
5V sensor power 2
68
68
R/W
Vehicle Speed
Sensor
Serial data
69
69
LGN/V
Ground
73
73
BK/GN
[137B]
1 2
[138B]
1 2
[133B]
1
2 3
[179B]
43
2
1
Rear
Clean
Rear
Front
Jiffy
Active
Ground
O2
O2
Stand
Exhaust
Sensor
Sensor
Sensor
(HDI only)
(HDI only)
Figure 4-2. EFI Circuit
2008 Touring Diagnostics: Engine Management 4-5
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