Harley Davidson 2008 Touring Models. Electrical Diagnostics Manual — page 17
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DTC P0641,
P0651
4.30
GENERAL
DIAGNOSTICS
See Figure 4-66. The ECM controls 5 volt power from terminal
PART NUMBER
TOOL NAME
"50" for Vref-1 and terminal "68" for Vref-2. The ECM provides
HD-41404-B
HARNESS CONNECTOR TEST KIT
common point ground for components through terminal "61"
for Vref-1 and terminal "62" for Vref-2. The ECM monitors
HD-48637
BREAKOUT BOX
voltage on the 5V reference circuits and sets the DTC codes
below if the voltage goes out of range. See Table 4-55.
Diagnostic Tips
•
DTC P0641 code will be displayed when Vref-1 voltage
•
An intermittent may be caused by poor connection, rubbed
is out of range. The 5V sensor power-1 (Vref-1) circuit
through wire insulation or a wire broken inside the insula-
supplies the Throttle Control Actuator
(TCA), Vehicle
tion.
Speed Sensor (VSS), Jiffy Stand Sensor, and Sensor 2
•
Poor connection: Inspect component and harness con-
of the Twist Grip Sensor (TGS) with a 5V reference signal.
nectors for backed out terminals, improper mating, broken
•
DTC P0651 code will be displayed when Vref-2 is out of
locks, improperly formed or damaged terminals, poor ter-
range. The 5V sensor power-2 (Vref-2) circuit supplies the
minal-to-wire connection and damage to the wires or har-
TMAP Sensor, and Sensor 1 of the TGS with a 5V refer-
nesses.
ence signal.
Diagnostic Notes
Each reference number below correlates to a circled number
Table 4-55. Code Description
on the flow chart(s).
DTC
DESCRIPTION
1. Connect BREAKOUT BOX (Part No. HD-48637) to the
P0641
5V Vref-1 out of range
ECM and ECM harness. See 4.7 BREAKOUT BOX: EFI.
P0651
5V Vref-2 out of range
2. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-B), purple pin probes, socket probes and patch
cords.
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em00106
Twist Grip Sensor
TMAP
Throttle
Sensor
Control Actuator
[224A]
6 5 4 3
2
1
[224B]
6 5 4 3
2
1
[80A]
1 23 4
[211A]
6
5
4
3
2
1
[80B]
1 23 4
[211B]
6
5
4
3
2
1
[204A]
6 5 4
3
2
1
[204B]
6 5 4 3
2
1
Electronic Control Module
[78A]
[78B]
TMAP sensor input
24
24
V/W
Throttle actuator control HI
29
29
BK/O
Throttle actuator control LO
30
30
BK/PK
Throttle pos. sensor-2
36
36
BN/R
Throttle pos. sensor-1
37
37
BN/V
Twist grip sensor-2
39
39
V/Y
Vehicle speed input
40
40
W/GN
Intake air temperature
49
49
LGN/Y
5V sensor power-1
50
50
BN/O
BN/O
Jiffy stand sensor
56
56
GN/BN
[65B] [65A]
Twist grip sensor-1
59
59
BE/GN
5V sensor ground-1
61
61
BK/W
BN/O
1
1
BK/GY
Vehicle
5V sensor ground-2
62
62
W/GN
2
2
Speed
Vehicle speed ground
64
64
BK/Y
BK/Y
3
3
Sensor
5V sensor power-2
68
68
R/W
Ground
73
73
BK/GN
Rear
Clean
Ground
[133B]
1
2
3
Jiffy Stand Sensor
(HDI only)
Figure 4-66. 5-Volt Vref-1 and Vref-2 Circuit
2008 Touring Diagnostics: Engine Management 4-147
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Table 4-56. Wire Harness Connectors
NO.
DESCRIPTION
MODEL
TYPE
LOCATION
[65B]
Vehicle Speed Sensor
All
3-place Delphi
Top of transmission case (beneath starter)
(VSS)
[78]
Electronic Control Module
All
73-place Delphi
Under seat
(ECM)
[80]
T
emperature
Manifold
All
4-place Delphi
Top of air intake manifold (vehicle right
Absolute Pressure (TMAP)
side)
sensor
[133B]
Jiffy Stand Sensor
All
3-place Packard
Front of engine on left frame rail
[204]
T
wist Grip Sensor (TGS)
All
6-place Molex
Inner fairing (right of tachometer)
[211]
Throttle Control Actuator
All
6-place Delphi
Side of air intake manifold (vehicle right
(TCA)
side)
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5 Volt VRef 1 or VRef 2 Out of Range: DTC P0641, P0651 (Part 1 of 3)
Check for DTC codes. See 4.4 CHECKING
FOR DIAGNOSTIC TROUBLE CODES: EFI.
Was DTC P0641 and/or P0651 displayed?
YES
NO
Connect Breakout Box (HD-48637) to
ECM and connector [78]. Place
Refer to Diagnostic
Ignition Switch in IGNITION position.
Tips.
Measure voltage at terminal “50”.
Is voltage approximately 5V?
YES
NO
Measure voltage at terminal “68”.
Is voltage higher then 5V?
Is voltage approximately 5V?
YES
NO
YES
NO
Is voltage higher
Refer to Diagnostic Tips.
then 5V?
Test for short to voltage
STOP
on (BN/O) wire.
Short to voltage
Go to 5V VRef 1 or 5V VRef
present?
2 Out Of Range: DTC
YES
NO
P0641, P0651
YES
NO
(Part 3 of 3).
Test for short to voltage
on (R/W) wire.
STOP
Repair short
Replace
Short to voltage
to voltage.
ECM.
present?
Go to 5V VRef 1 or 5V VRef
2 Out Of Range: DTC
P0641, P0651
(Part 2 of 3).
YES
NO
Repair short
Replace
Clear codes using speedometer self
to voltage.
ECM.
diagnostics. See 4.6 SPEEDOMETER
SELF DIAGNOSTICS. Confirm proper
operation with no check engine lamp.
fc01281_en
2008 Touring Diagnostics: Engine Management 4-149
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5 Volt VRef 1 or VRef 2 Out of Range: DTC P0641, P0651 (Part 2 of 3)
Continued From 5V VRef 1 or 5V VRef 2 Out Of
Range: DTC P0641, P0651
(Part 1 of 3).
Disconnect the Twist Grip Sensor connector [204].
Is voltage still below 5V?
YES
NO
Disconnect the TMAP
Replace Twist
connector [80].
Grip Sensor.
Is voltage still below 5V?
YES
NO
Inspect for short to ground
on (R/W) wire terminal “68”
Replace
connector [78].
TMAP sensor.
Short to ground present?
YES
NO
Repair open or short to
Replace
ground on (R/W) wire.
ECM.
fc01282_en
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5 Volt VRef 1 or VRef 2 Out of Range: DTC P0641, P0651 (Part 3 of 3)
Continued From 5V VRef 1 or 5V VRef 2 Out Of
Range: DTC P0641, P0651
(Part 1 of 3).
Disconnect the Jiffy Stand Sensor connector [133B].
Is voltage still below 5V?
YES
NO
Disconnect the Throttle Control
Replace Jiffy
Actuator connector [211].
Stand Sensor.
Is voltage still below 5V?
YES
NO
Disconnect the Twist Grip
Replace the Induction
Sensor connector [204].
Module.
Is voltage still below 5V?
YES
NO
Disconnect the Vehicle Speed
Replace the Twist
Sensor connector [65].
Grip Sensor.
Is voltage still below 5V?
YES
NO
Test for open or short to
ground on (BN/O) wire.
Replace the Vehicle
Open or short to ground
Speed Sensor.
present?
YES
NO
Repair open or short to
Replace the ECM.
ground on (BN/O) wire.
fc01283_en
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DTC P1009,
P1010
4.31
GENERAL
DIAGNOSTICS
Password Problem
PART NUMBER
TOOL NAME
The ECM, TSM/TSSM/HFSM and speedometer exchange
HD-41404-B
HARNESS CONNECTOR TEST KIT
passwords during operation. An incorrect password or missing
HD-48637
BREAKOUT BOX
password will set a diagnostic code.
Diagnostic Notes
NOTE
If the TSM/TSSM/HFSM is not connected to the wiring harness,
Each reference number below correlates to a circled number
the vehicle will not start.
on the flow chart(s).
1. DTC P1009 may be set if a recent ECM or TSM/TSSM/
Table 4-57. Code Description
HFSM replacement did not follow the correct password
assignment procedure. See
3.26 TSM/HFSM: PASS-
DTC
DESCRIPTION
WORD LEARN for details.
P1009
Incorrect password
2. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
P1010
Missing password
41404-B), black socket probes and patch cord.
3. Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness and ECM. See 4.7 BREAKOUT BOX: EFI.
4. Historic codes DTC U1300 or DTC U1301 would also have
been set. Clear codes.
5. See the Service Manual for TSM/TSSM/HFSM replace-
ment. See
3.26 TSM/HFSM: PASSWORD LEARN,
Password Learning for the password learning procedure.
ed01258
1
2
1. ECM
2. ECM mounting bracket
Figure 4-67. ECM Mounting Bracket (Under Seat)
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ed02065
Figure 4-68. TSM/TSSM/HFSM
2008 Touring Diagnostics: Engine Management 4-153
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em00091
Radio
[1A]
[1B]
To
O
1
1
O
instruments
fuse
Main
9
to interconnect
[27A]
harness
[27B]
9
ABS
LGN/V
9
9
Serial data
(Optional)
[166B] [166A]
[131B]
[131A]
BK
LGN/V
LGN/V
LGN/V
13
13
LGN/V
GY
O
BK/GN
BN/GY
BN/GY
1
2
3
4
12
[30B]
1
2
3
4
12
[30A]
1
2
5
7
[108B]
TSM/TSSM/HFSM
1
2
5
7
[39A]
1
2
5
7
1
2
5
7
[108A]
[39B]
1
BK/GN
2
Data Link
Connector
LGN/V
3
To
ignition
GY
GY
4
Speedometer
Tachometer
fuse
[91A]
[2A]
4
Main to
interconnect
[2B]
4
harness
[78B]
69
69
[78A]
To
battery
ECM
fuse
Figure 4-69. Serial Data Circuit (FLHX, FLHT/C/U, FLTR)
Table 4-58. Wire Harness Connectors
NO.
DESCRIPTION
MODEL
TYPE
LOCATION
[1]
Main to interconnect har-
FLHT/C
16-place Molex (black)
Inner fairing - right radio support bracket
ness
FLTR
16-place Molex (black)
Inner fairing - below radio (right side)
[2]
Main to interconnect har-
FLHT/C
12-place Molex (gray)
Inner fairing - right fairing support bracket
ness
FLTR
12-place Molex (gray)
Inner fairing - below radio (right side)
[27]
Radio
All
23-place Amp (T
yco)
Inner fairing - back of radio (right side)
[30]
TSM/TSSM/HFSM
All
12-place Deutsch
Cavity in crossmember at rear of battery
box (under seat)
[39]
Speedometer
FLHT/C
12-place Packard
Inner fairing (back of speedometer)
FLTR
12-place Packard
Under bezel (back of speedometer)
[78]
Electronic Control Module
All
73-place Delphi
Under seat
(ECM)
[91]
Data link connector
All
4-place Deutsch
Under right side cover
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Table 4-58. Wire Harness Connectors
NO.
DESCRIPTION
MODEL
TYPE
LOCATION
[108]
T
achometer
FLHT/C
12-place Packard
Inner fairing (back of tachometer)
FL
TR
12-place Packard
Under bezel (back of tachometer)
[166]
ABS module
All
20-place Molex
Under right side cover
LGN/V
em00092
[166B]
9
[166A]
9
[131B]
[131A]
ABS
BK
(Optional)
LGN/V
13
13
LGN/V
BK/GN
GY
1
2
3
4
12
[30B]
O
1
1
1
2
3
4
12
[30A]
[1A] [1B]
To
BK/GN
instruments
BN/GY
fuse
LGN/V
TSM/TSSM/HFSM
[39B]
1
2
5
7
1
2
5
7
[39A]
4
[2A]
[2B]
1
4
Speedometer
Data Link
BK/GN
2
BN/GY
LGN/V
3
To
ignition
GY
GY
4
fuse
To
[91A]
battery
fuse
[78B]
69
69
[78A]
ECM
Figure 4-70. Serial Data Circuit (FLHR/C/S)
Table 4-59. Wire Harness Connectors
NO.
DESCRIPTION
TYPE
LOCATION
[30]
TSM/TSSM/HFSM
12-place Deutsch
Cavity in crossmember at rear of bat-
tery box (under seat)
[39]
Speedometer
12-place Packard
Inner fairing (back of speedometer)
2008 Touring Diagnostics: Engine Management 4-155
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Table 4-59. Wire Harness Connectors
NO.
DESCRIPTION
TYPE
LOCATION
[78]
Electronic Control Module (ECM)
73-place Delphi
Under seat
[91]
Data link connector
4-place Deutsch
Under right side cover
[166]
ABS module
20-place Molex
Under right side cover
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Password Problem: DTC P1009, P1010
Which Diagnostic Trouble
Code (DTC) was set?
DTC P1009.
DTC P1010.
1
Bad password.
No password.
Reprogram password.
Are there any
5
See 3.26 TSM/HFSM:
U-codes set?
PASSWORD LEARN.
YES
NO
YES
NO
Replace TSM/TSSM/HFSM
Remove ECM connector [78].
System
Troubleshoot
5
and relearn password.
Check for continuity to ground at
OK.
lowest U-code.
2
System OK?
data connector [91A] terminal “3”.
Is continuity present?
YES
NO
YES
NO
Reinstall original TSM/
Locate and
Check for Battery voltage on
System
TSSM/HFSM. Replace
4
repair short
terminal “3”.
5
ECM.
to ground.
Battery voltage present?
OK.
Reprogram and
relearn password.
YES
NO
Test data Connector [91A]
2
Locate and
terminal “3” against Breakout
4
repair short
Box terminal “69” for continuity.
3
to voltage.
Continuity present?
YES
NO
Replace TSM/TSSM/HFSM
Inspect terminals
5
and relearn password.
2
for damage or repair
System OK?
opens as necessary.
YES
NO
Clear codes using speedometer self diagnostics.
System
Reinstall original TSM/TSSM/HFSM.
See 4.6 SPEEDOMETER SELF DIAGNOSTICS.
Confirm proper operation with no check engine
OK.
5
Replace ECM. Reprogram and
lamp.
relearn password.
fc01051_en
2008 Touring Diagnostics: Engine Management 4-157
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DTC P1270
4.32
GENERAL
NOTE
After replacing the ECM, perform password learning procedure
TGS Validation
and clear codes.
Within the ECM, there are two independent Analog/Digital (A/D)
converter modules, used to validate the input of Twist Grip
Table 4-60. Code Description
Sensor 2 (TGS2). TGS2 inputs comes into both converter
modules and if the output of the two readings are not within
DTC
DESCRIPTION
the designated value of each other, for a specified time, then
P1270
TGS2 validation error
DTC P1270 fault is initiated.
DIAGNOSTICS
Unless the ECM has a poor or intermittent connection, DTC
P1270 indicates that the ECM is defective and requires
Diagnostic Tips
replacement. See Service Manual for replacement information.
•
An intermittent may be caused by poor connection, rubbed
through wire insulation or a wire broken inside the insula-
tion.
•
Poor connection: Inspect component and harness con-
nectors for backed out terminals, improper mating, broken
locks, improperly formed or damaged terminals, poor ter-
minal-to-wire connection and damaged harnesses.
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TGS Validation Error: DTC P1270
Clear the DTC. Start the engine.
Open and close the throttle.
Does the DTC reset?
YES
NO
Inspect the ECM connector [78]. Make sure it is
Refer to
fully connected and no poor connections exist
Diagnostic Tips.
on terminal “52” (Y/GN).
Were any poor connections found?
YES
NO
Connect ECM Breakout Box. With the Ignition
Switch on and the Engine Stop Switch in the
Repair poor
RUN position test voltage on terminal “52” to a
connection.
good ground.
Is battery voltage present?
YES
NO
Test for voltage at terminal “87” (Y/GN) wire of
Replace ECM.
the System Relay.
Is voltage present?
YES
NO
Locate and repair open or high
resistance in (Y/GN) wire
Replace System Relay.
between the System Relay and
the ECM.
Clear codes using speedometer self
diagnostics. See 4.6 SPEEDOMETER
SELF DIAGNOSTICS. Confirm proper
fc01331_en
operation with no check engine lamp.
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DTC P1351,
P1352, P1354, P1355
4.33
3. Connect BREAKOUT BOX (Part No. HD-48637) between
GENERAL
EFI wire harness and ECM. See 4.7 BREAKOUT BOX:
Ignition Coil
EFI.
Ignition coil DTCs will set if the ignition coil primary voltage is
4. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
out of range. This could occur if there is an open coil or loss
41404-B), purple socket probes and patch cord.
of power to the coil. If front and rear DTCs are set simultan-
eously, it is likely a coil power failure or a coil failure.
ed01549
See Figure 4-72. The coil receives power from the system relay
at the same time that the fuel pump and injectors are activated.
The system relay is active for the first 2 seconds after the
ignition switch is turned ON and then shuts off until RPM is
detected from the CKP sensor, at which time it is reactivated.
The ECM is responsible for turning on the system relay by
providing the ground to activate the relay, which in turn powers
the coil.
Table 4-61. Code Description
DTC
DESCRIPTION
P1351
Front ignition coil open/low
P1352
Front ignition coil high/shorted
P1354
Rear ignition coil open/low
P1355
Rear ignition coil high/shorted
DIAGNOSTICS
PART NUMBER
TOOL NAME
HD-34730-2C
FUEL INJECTOR TEST LAMP
Figure 4-71. Ignition Coil Circuit Test
HD-41404-B
HARNESS CONNECTOR TEST KIT
HD-41404-B
HARNESS CONNECTOR TEST KIT
HD-44687
IGNITION COIL CIRCUIT TEST
ADAPTER
ed02980
HD-48637
BREAKOUT BOX
Diagnostic Notes
4
Each reference number below correlates to a circled number
on the flow chart(s).
3
1. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-B), gray pin probes and patch cord.
2
NOTE
Gently connect test lamp to connector [83B]. Forcefully inserting
1
test lamp will result in ignition connector terminal damage.
2. See Figure 4-71. Plug IGNITION COIL CIRCUIT TEST
ADAPTER (Part No. HD-44687) and FUEL INJECTOR
TEST LAMP (Part No. HD-34730-2C) into Breakout Box.
1. Power
Note that cranking the engine with test lamp in place of
2. Feedback signal pin
the ignition coil can sometimes cause a DTC P1351,
3. Rear coil
P1352, P1354 or P1355. This condition is normal and
4. Front coil
does not by itself indicate a malfunction. DTCs must be
Figure 4-72. Ignition Coil Connector Terminals
cleared if this condition occurs.
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em00095
Data Link
Fuel
ABCD
[141A]
1 2
3 4
Pump
[91A]
ABCD
[141B]
(GY)
Fuel Pump
Assembly in Tank
[83B] [83A]
Fuel Tank
Ignition Coil
Harness
Y/GN
A
A
Power
1234
[13B]
GY/BE
B
B
Ion sense
1234
[13A]
Y/BE
C
C
Coil rear
BE/O
D
D
Coil front
Electronic
Control
Module
[78A] [78B]
Fuel Pump
30(3)
87(5)
Fuse
BE/GY
Y/GN
MAXIFUSE
86(1)
85(2)
40 Amp
W/BK
GN/O
15 Amp
Exhaust actuator
21
21
V/O
To fuel
Rear injector
23
23
GN/GY
System
[5B]
gauge
BA
Relay
System relay enable
27
27
GN/O
(+)
(-)
Front injector
28
28
W/Y
ECM
Fuse
BE/GY
R
Ion sense
33
33
GY/BE
Battery
15 Amp
[84B] [84A]
Y/GN
A
A
Front
Exhaust feedback
38
38
V/BE
Ignition
[33B]
W/Y
B
B
Injector
Fuse
[85B] [85A]
R/GY
1
15 Amp
R
2
R/BK
R/BK
3
Y/GN
A
A
Rear
Ignition
GN/GY
B
B
Injector
Switch
[33A]
12V power
52
52
Y/GN
R/BK
Rear coil
53
53
Y/BE
Engine
Front coil
54
54
BE/O
Control
Fuse
15 Amp
Serial data
69
69
LGN/V
3
6
[1A]
Main
12V battery
71
71
BE/GY
Harness
12V stop switch
72
72
W/BK
[1B]
3
6
Ground
73
73
BK/GN
Rear
Clean
Ground
Right
[22B]
3 4
[179B]
Hand
43
2
1
[22A]
3
4
Controls
Active
Exhaust
(HDI only)
Engine Stop
Switch
Figure 4-73. Ignition Coil Circuit Diagram
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Table 4-62. Wire Harness Connectors
NO.
DESCRIPTION
TYPE
LOCATION
[1]
Main to interconnect harness
16-place Molex (black)
Inner fairing (right radio support
bracket)
[5]
MAXIFUSE
2-place Packard
Under left side cover
[13]
Fuel tank harness
4-place Multilock
Behind fuel tank (under seat)
[22]
Right handlebar switches
12-place Molex (black)
Inner fairing (fork stem nut lock plate)
[33]
Ignition switch
3-place Packard
Inner fairing (under radio)
[78]
Electronic Control Module (ECM)
73-place Delphi
Under seat
[83]
Ignition coil
4-place Delphi
Below fuel tank (left side)
[84]
Front injector
2-place Delphi
Below fuel tank (left side)
[85]
Rear injector
2-place Delphi
Below fuel tank (left side)
[91]
Data link connector
4-place Deutsch
Under left side cover
[179]
Active exhaust actuator
5-place Amp (Tyco)
Domestic (not used): Under right side
cover
HDI: Under right side cover (behind
electrical bracket)
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Ignition Coil: DTC P1351, P1352, P1354, P1355 (Part 1 of 2)
Disconnect coil connector [83].
Measure voltage on terminal “A” of
Ignition Coil.
1
Voltage equal to Battery voltage
during first 2 seconds after Ignition
Switch is in IGNITION position?
YES
NO
Use Breakout Box and test light for the next inspection.
2
Front coil codes: Check between ECM connector [78]
terminal “54” and ECM connector [78] terminal “72”.
STOP
Rear coil codes: Check between ECM connector [78]
3
terminal “53” and ECM connector [78] terminal “72”.
Does test lamp flash when engine is cranked?
Go to Ignition Coil:
DTC P1351, P1352,
P1354, P1355
(Part 2 of 2).
YES
NO
Measure Ignition Coil resistance.
Front coil codes: Check between
Measure voltage at System Relay terminal
coil terminal “A” and terminal “D”.
“30” during first 2 seconds after Ignition
4
Rear coil codes: Check between
Switch is in IGNITION position.
coil terminal “A” and terminal “C”.
Voltage equivalent to Battery voltage?
Resistance 0.3-0.5 ohms?
NOTE:
Depending on relay used relay socket
terminal could be shown as “3” or “4C”.
YES
NO
YES
NO
Replace Ignition
Coil. See Touring
STOP
Service Manual.
Check for multiple codes.
See Multiple Diagnostic
Repair open wire
Trouble Codes
Go to Ignition Coil:
or connection on
under 4.4 CHECKING
DTC P1351, P1352,
(Y/GN) wire.
FOR DIAGNOSTIC
P1354, P1355
TROUBLE CODES: EFI.
(Part 2 of 2).
Clear codes using speedometer self diagnostics. See
4.6 SPEEDOMETER SELF DIAGNOSTICS. Confirm
proper operation with no check engine lamp.
fc01052_en
2008 Touring Diagnostics: Engine Management 4-163
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Ignition Coil: DTC P1351, P1352, P1354, P1355 (Part 2 of 2)
Continued from Ignition Coil: DTC P1351, P1352, P1354, P1355
(Part 1 of 2).
Using Breakout Box, measure resistance between
ECM and Ignition Coil terminals as follows.
BREAKOUT BOX
1
DTC
COIL TERMINAL
TERMINAL
3
P1351/P1352
D (BE/O) wire
“54”
P1353/P1354
C (Y/BE) wire
“53”
Resistance less than 0.5 ohms?
YES
NO
Perform 4.8 WIGGLE
Repair open wire
TEST to check for intermittents.
or connection.
Intermittents present?
YES
NO
Check for continuity to ground.
Front Ignition Coil codes: Check
Repair
Breakout Box terminal “54”.
intermittent.
Rear Ignition Coil codes: Check
Breakout Box terminal “53”.
Continuity present?
YES
NO
Check for continuity to ground.
Front coil codes: Check
Repair short
Breakout Box terminal “54”.
to ground.
Rear coil codes: Check
Breakout Box terminal “53".
Continuity present?
YES
NO
Replace ECM.
Repair short
Reprogram and
to voltage.
learn password.
Clear codes using speedometer self diagnostics. See
4.6 SPEEDOMETER SELF DIAGNOSTICS. Confirm
fc01053_en
proper operation with no check engine lamp.
4-164 2008 Touring Diagnostics: Engine Management
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DTC P1475,
P1477, P1478
4.34
GENERAL
Table 4-63. Code Description
Active Exhaust Actuator (HDI Models)
DTC
DESCRIPTION
The Active Exhaust System utilizes an actuator valve located
P1475
Exhaust actuation position error
in the rear exhaust pipe which is connected to a servo motor
via a cable. The valve position automatically adjusts to enhance
P1477
Exhaust actuator open/low
engine performance. The Active Exhaust is protected by a 15
P1478
Exhaust actuator shorted
amp fuse.
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 4-74. Fuse and Relay Locations
2008 Touring Diagnostics: Engine Management 4-165
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