Harley Davidson 2011 Touring Models. Electrical Diagnostic Manual — page 28
[13B]
[13A]
[78B]
[78A]
Y/GN
R
V/O
W/Y
V/Y
R/W
V/W
GN/GY
BK/PK
PK/GN
BE/GN
BK/GY
BK/GN
BK/BN
LGN/Y
GN/W
GY/BE
BN/R
BK
BN/V
BK/W
BK/Y
PK/O
BN/O
PK/Y
Y/GN
Y/BE
BE/O
PK/O
V/BE
BK/Y
BN/O
Y/GN
O/GY
O/GY
BN/O
BK/W
PK/Y
BK/W
Y/BE
BE/O
Y/GN
Y/GN
Y/GN
W/Y
V/BE
BK/O
GY/Y
V/GY
V/GY
W/GN
W/GN
BK
GY
BE
BN
V/W
R/W
R
R
V
LGN/Y
BK/GY
BE/GN
BK/GY
R/W
V/Y
1
2
3
4
A
A
B
A
B
A
B
A
B
B
C
D
A
Power
Ion Sense
Coil Rear
Coil Front
B
C
D
TGS
CKP
Sensor
ET
Sensor
TCA
TMAP
Sensor
Ignition Coil
VSS
Rear Fuel
Injector
Front Fuel
Injector
System
Relay
1
6
5
4
3
2
1
1
2
1
2
6 5 4 3 2 1
6 5 4 3 2 1
6 5 4 3 2 1
6 5 4 3 2 1
1
A
B
C
A
B
C
2
A B
A B
3 4
1 2
Front ACR
(If Equipped)
2 1
2 1
3 4
6
5
4
3
2
1
B
D
B
D
4
1
Fuel Tank
Harness
Fuel Pump
Assembly In Tank
4
Fuel
Pump
Fuse
15A
To 15A
ECM Fuse
To 15A
Exhaust
Control Fuse
Rear
HO2S
(BK)
Front
HO2S
Active
Exhaust
(HDI Only)
BK
V/O
BK
PK/GN
BK/BN
BK/BN
GN/GY
BK
LGN/R
Right
GND 2
Y/GN
Y/GN
V/GY
V/GY
Y/GN
Y/GN
GY/Y
Purge Solenoid
(Optional)
A
B
A
B
BE/GY
[79A]
[79B]
[224A]
[224B]
[204A]
[204B]
[90A]
[90B]
[203AF]
[203BF]
Rear ACR
(If Equipped)
2 1
2 1
[211A]
[211B]
[20A]
[20B]
[80A]
[80B]
[141A]
[141B]
[141B]
[65A]
[65B]
[179B]
ECM
Exhaust
Actuator
Rear
Fuel
Injector
TMAP
Sensor
Input
F
ront
Fuel
Injector
Throttle
Actuator
Control
HI
Throttle
Actuator
Control
LO
O2
Heater
Ground
TPS
2
TPS
1
Exhaust
F
eedbac
k
TGS
2
V
ehicle
Speed
Input
CKP
Sensor
Rear
HO2
Sensor
IA
T
Sensor
5V
Sensor
P
o
w
er
1
ET
Sensor
12V
P
o
w
er
Rear
Ignition
Coil
F
ront
Ignition
Coil
TGS
1
5V
Sensor
Ground
1
5V
Sensor
Ground
2
CKP
Sensor
(+)
V
ehicle
Speed
Ground
F
ront
HO2
Sensor
5V
Sensor
P
o
w
er
2
Ground
21
Purge
Solenoid
20
23 24
28 29 30 31
363738 39 4043 46
4950 51 52 53 54
59 61 62 63 64
66
68 73
HO2S
Retur
n
48
4
3
2
1
4
3
2
1
GY/BE
Ion
Sense
33
21
20
A
CR
Ground
19
19
23 24
28 29 30 31
363738 39 4043 46
4950 51 52 53 54
59 61 62 63 64
66
68 73
48
33
GN/W
GN/W
Y/GN
Y/GN
O/GY
14
B
D
15
BK
14
15
85
86
30
87
3
5
3D
4C
O/GY
BK
O/GY
BK
FLHR/C
EXCEPT
FLHR/C
BK
BK/W
BK/O
BN/R
BN/O
BN/V
BK/PK
4A
4B
[84B]
[84A]
[85B]
[85A]
[95B]
[95A]
[83B]
[83A]
[138A]
[137A]
[203AR]
[203BR]
em00702
Figure 6-52. EFI Simplified Schematic
6-110 2011 Touring Diagnostics: Engine Management
MISFIRE AT IDLE OR UNDER LOAD
TOOL NAME
PART NUMBER
HARNESS CONNECTOR TEST KIT
HD-41404-C
BREAKOUT BOX
HD-48637
SNAP-ON IN-LINE SPARK TESTER
YA840
Table 6-106. Misfire At Idle or Under Load Diagnostic
Faults
POSSIBLE CAUSES
ECM malfunction
Ignition system malfunction
Fuel system malfunction
Electrical system malfunction
1. Power Ground Continuity Test
1.
Connect BREAKOUT BOX (Part No. HD-48637) between
wire harness [78B] and ECM [78A]. See
2.
Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, check for continuity between
breakout box terminal 73 to ground.
3.
Is continuity present?
a.
Yes.
b.
No. Repair poor ground on (BK) wire.
2. Spark Test
1.
Connect SNAP-ON IN-LINE SPARK TESTER (Part
No. YA840) between front spark plug cable and ground.
See
2.
Crank engine for a few seconds.
3.
Remove tester from front spark plug cable and connect
rear spark plug cable and ground.
4.
Did spark jump gap on both cables?
a.
Yes. Check for faulty, worn or cracked spark plugs,
plug fouling due to mechanical problems or faulty
connection at plug or coils. See the service manual
and repair as required.
b.
No.
3. Spark Plug Wire Test
1.
Disconnect the spark plug wires.
2.
Measure the resistance of the spark plug wires.
3.
Is the front and rear spark plug wire resistance within the
specified range? Refer to
a.
Yes.
b.
No. Replace the out of range spark plug wire. See
the service manual.
4. Carbon Tracking Inspection Test
1.
Inspect top of ignition coils for carbon tracking.
2.
Is carbon tracking present?
a.
Yes. Switch ignition coil with known good unit and
perform Test 2. If spark jumps gap, replace ignition
coil. See the service manual. If not, then continue with
tests.
b.
No. Replace ignition coil. See the service manual.
5. Ignition Coil Primary Wire Continuity Test
1.
Turn IGN OFF.
2.
Remove system relay and disconnect ignition coil [83].
3.
Measure resistance between [64-1B] socket terminal 4C
and [83B] terminal A. Wiggle connectors while measuring.
4.
Is resistance continuously less than 0.5 Ohms?
a.
Yes.
b.
No. Repair intermittent on (Y/GN) wire.
6. Battery to System Relay Voltage Drop
Test
1.
Reconnect ignition coil and install system relay.
2.
Turn IGN ON, start engine.
3.
With engine running, measure voltage drop between bat-
tery and system relay [64-1B] socket terminal 4C (under-
side of fuse/relay block). See
.
4.
Is voltage drop less than 1.0V?
a.
Yes. Problem is fuel related. Recheck symptoms.
b.
No.
7. System Relay Test
1.
With engine running, measure voltage drop between bat-
tery and system relay [64-1B] socket terminal 3D (under-
side of fuse/relay block).
2.
Is voltage drop less than 1.0V?
a.
Yes. Replace system relay. See the service manual.
b.
No.
8. Battery to ECM Fuse Voltage Drop Test
1.
With engine running, measure voltage drop between bat-
tery and [64-1B] socket terminal 2F.
2.
Is voltage drop less than 1.0V?
a.
Yes. Repair (BE/GY) wire or connections.
b.
No.
9. Battery to Fuse Block Voltage Drop Test
1.
With engine running, measure voltage drop between bat-
tery and [64-1B] socket terminal 2E.
2.
Is voltage drop less than 1.0V?
a.
Yes. Repair ECM fuse connections or replace ECM
fuse.
b.
No.
2011 Touring Diagnostics: Engine Management 6-111
10. Battery to Main Fuse Voltage Drop Test
1.
With engine running, measure voltage drop between bat-
tery (+) and main fuse [5B] terminal A.
2.
Is voltage drop less than 1.0V?
a.
Yes. Repair (R) wire.
b.
No.
11. Battery to Main Fuse Block Voltage Drop
Test
1.
With engine running, measure voltage drop between bat-
tery (+) and main fuse [5B] terminal B.
2.
Is voltage drop less than 1.0V?
a.
Yes. Repair main fuse connections or replace main
fuse.
b.
No. Repair (R) wire between battery and main fuse
[5B] terminal B, including connections at starter.
6-112 2011 Touring Diagnostics: Engine Management
SUBJECT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE NO.
ABS
7.1
ANTI-LOCK BRAKE SYSTEM (ABS) GENERAL
INFORMATION
DESCRIPTION AND OPERATION
TOOL NAME
PART NUMBER
DIGITAL TECHNICIAN II
HD-48650
The ABS module controls brake application under extreme
stopping conditions in order to keep the wheels from slipping.
When wheel slip is detected during a brake application, an
ABS event occurs. The hydraulic pressure to the individual
wheel is controlled to prevent slipping on that wheel. Specific
valves and individual hydraulic lines are provided for each
wheel. The ABS can decrease, hold or increase fluid pressure
to each brake. However, the ABS cannot increase hydraulic
pressure above the pressure being transmitted by the master
cylinder.
During an ABS event, a series of rapid pulsations may be felt
in either the front brake lever or rear brake pedal. These
pulsations are caused by the rapid changes in position of the
individual solenoid valves as the ABS responds to wheel speed
sensor inputs and attempts to prevent wheel slip. These
pulsations are present only during initialization and anti-lock
braking. The pulsations stop when normal braking is resumed
or when the vehicle comes to a stop. A ticking or popping noise
may also be heard as the solenoid valves cycle rapidly. During
anti-lock braking on dry pavement intermittent chirping noises
may be heard as the tires approach slipping. These noises and
pulsations are considered normal during anti-lock operation.
Vehicles equipped with ABS may be stopped by applying
normal force to the brake pedal or lever. Brake operation during
normal braking is no different then that of previous non-ABS
systems. Maintaining a constant force on the brake pedal or
lever provides the shortest stopping distance while maintaining
vehicle stability.
In addition to the normal brake system, the ABS consists of
the following components.
•
See
. The ECU contains the motor relay, valve
relay, system enable relay and the solenoids.
•
. The HCU contains the four valves (an
apply valve and release valve for each wheel), two pumps,
pump motor and accumulators.
•
. Front WSS.
•
. Rear WSS.
•
. ABS Diode Pack.
•
. Front WSS connector.
•
. Rear WSS connector.
When referencing the ECU and the HCU as a unit they are
referred to as the ABS module. When the ECU is replaced,
use DIGITAL TECHNICIAN II (Part No. HD-48650) to program
the ECU.
1
3
4
5
7
2
6
ed03081
1.
Front HO2S [138]
2.
ABS module [166] (if equipped)
3.
Active exhaust [179]
4.
Rear WSS [168]
5.
Rear HO2S [137]
6.
TSM/TSSM/HFSM [30]
7.
HFSM antenna jumper harness [208]
Figure 7-1. Under Right Side Cover
ed03127
Figure 7-2. Front WSS (ABS Only)
2011 Touring Diagnostics: ABS 7-1
ed03126
Figure 7-3. Rear WSS (ABS Only)
1
2
3
4
5
6
ed03111
1.
Security siren [142]
2.
Security siren (if equipped)
3.
Fuse block
4.
Main fuse [5]
5.
DLC [91]
6.
ABS diode pack [201] (if equipped)
Figure 7-4. Under Left Side Cover: Except FLTRX, FLHX,
FLHTC
1
3
2
ed03073
1.
Ambient air temperature sensor [107]
2.
Fuel tank
3.
Front WSS [167]
Figure 7-5. Front WSS and Ambient Air Temperature
Sensor
Pressure Hold
The ECU closes the apply valve and keeps the release valve
closed in order to isolate the slipping wheel when wheel slip
occurs. This holds the pressure steady on the brake so that
the hydraulic pressure does not increase or decrease.
Pressure Decrease
If a pressure hold does not correct the wheel slip condition, a
pressure decrease occurs. The apply valve is closed and the
release valve is opened. The excess fluid is stored in the
accumulator until the pump can return the fluid to the master
cylinder or fluid reservoir.
Pressure Increase
After the wheel slip is corrected, a pressure increase occurs.
The ECU increases the pressure to individual wheels during
deceleration in order to reduce the speed of the wheel. The
apply valve is opened and the release valve is closed. The
increased pressure is delivered from the master cylinder and
will not exceed the pressure from the master cylinder.
Initialization Self-Test
The ABS module performs one initialization test each ignition
cycle. The ABS module verifies internal circuitry and the wheel
speed sensor circuits.
As part of the initialization self-test the ABS module also does
a modulator test. This test consists of energizing the actuators
and commanding the motor and solenoids on and off. The ABS
module will run this test the first time the vehicle speed exceeds
10 mph (16 km/h) in an ignition cycle or when all the following
conditions are met for the first time in an ignition cycle:
•
Brake is not applied.
•
Engine is above 500 rpm.
•
No ABS event present.
•
The system ECU is enabled.
•
The ABS system is not communicating with DIGITAL
TECHNICIAN II (Part No. HD-48650).
7-2 2011 Touring Diagnostics: ABS
ABS Indicator
. The speedometer illuminates the ABS indicator
when the following occurs.
•
The ECU detects an ABS disabling malfunction. The ECU
sends a serial data message to the instrument requesting
illumination.
•
The speedometer performs a bulb check.
•
The speedometer detects a loss of communication with
the ECU.
The ECU sends a message to the instrument when a malfunc-
tion that disables ABS operation is detected. Depending on
the fault the ABS Indicator may stay on even after the malfunc-
tion is corrected. The indicator will not go off until the vehicle
is operated at speeds greater than 10 mph (16 km/h). It is
important to verify that this is not the cause of an ABS indicator
which is illuminated when no DTCs are set, before attempting
to diagnose other possible causes.
0
10
30
20
50
40
110
120
60 70
80
90
100
0
20
30
70
80
40
50
60
10
MPH
H
ARLEY-DAVIDSON
CERTIFIED
RPM x100
H
ARLEY-DAVIDSON
1
1
2
2
3
4
10
4
5
5
6
6
7
7
9
9
8
11
11
8
10
ed03170
7.
1.
Check engine lamp
Speedometer
2.
8.
Security lamp (key icon)
Battery discharge lamp
9.
3.
Sixth gear lamp
Tachometer
4.
10.
Cruise lamp
ABS lamp
11.
5.
Pursuit lamp (Police models)
Odometer/trip odometer/clock
6.
Low fuel warning lamp
Figure 7-6. Speedometer
2011 Touring Diagnostics: ABS 7-3
7.2
DTC C1017, C1018
DESCRIPTION AND OPERATION
TOOL NAME
PART NUMBER
DIGITAL TECHNICIAN II
HD-48650
•
DTC C1017: The ABS module monitors the internal relay
for the pump motor along with the power circuit going to
it.
•
DTC C1018: The ABS module monitors the internal pump
motor and the circuit supplying ground to the pump motor.
Table 7-1. Code Description
DESCRIPTION
DTC
Pump motor power circuit open fault
C1017
Pump motor ground high resistance fault
C1018
3
1
2
5
4
ed01947
1.
Pump motor connector (ECU)
2.
Solenoids
3.
Pump motor
4.
Valves
5.
Pump motor connector (HCU)
Figure 7-7. ECU and HCU Pump Motor Connectors
Conditions for Setting the DTC
DTC C1017 will set if any of the following conditions exist:
•
The voltage across the pump is below 8.0V for 0.2
seconds.
•
The battery voltage to the pump is less than 8.84V.
•
The pump relay coil is NOT shorted to battery or open.
DTC C1018 will set if the following conditions exist when the
pump motor is commanded off:
•
The system voltage is between 8.0-18.0V.
•
The voltage at the low side of the pump is greater than
1.7V.
DTC C1018 will set if the following conditions exist when the
pump is commanded on:
•
The system voltage is between 10.0-18.0V.
•
The voltage across the pump motor is less than 8.4V.
•
The voltage at the high side of the pump motor is greater
than 8.84V.
Action Taken When the DTC Sets
•
ABS is disabled.
•
The ABS indicator is illuminated.
Conditions for Clearing the DTC
The condition for the DTC is no longer present and the DTC
has been cleared in self-diagnostic mode or DIGITAL TECHNI-
CIAN II (Part No. HD-48650).
The ABS module automatically clears the historic DTC when
a current DTC is not detected in 50 consecutive drive cycles.
Diagnostic Tips
The following conditions are possible causes for DTC C1017:
•
High resistance or open pump motor battery circuit.
•
Internal ECU pump relay fault.
•
Battery or charging malfunction.
The following conditions are possible causes for DTC C1018:
•
Pump motor ground circuit has high resistance or open.
•
Battery or charging malfunction.
Connector Information
For additional information about the connectors in the following
diagram(s) and diagnostic procedure(s), including the color of
the harness test kit terminal probes, see
7-4 2011 Touring Diagnostics: ABS
Ignition
15A
ABS
30A
20
19
9
Battery (Motor)
Ignition
Serial Data
20
10
Battery
Pump Motor Supply
Pump
Motor
Pump Motor Ground
10
19
9
1
Ground
1
11
Ground (Motor)
11
GND 1
ECU
ABS Module
GY
GY
R/V
R/V
R/V
[64-2B]
BK
BK
1
2
1
2
HCU
M
[166A]
[166B]
1E
1F
4A
4B
Tachometer
Speedometer
FLHR/C
Serial Data
LGN/V
LGN/V
2
2
13
13
[108B]
[108A]
Except
FLHR/C
Serial Data
LGN/V
LGN/V
LGN/V
LGN/V
2
2
2
2
[39B]
[39A]
[20B]
[20A]
[1A]
[1B]
Serial Data
LGN/V
2
2
[39B]
[39A]
Except
FLHR/C
Speedometer
em00858
Figure 7-8. ABS Power and Ground Schematic
DTC C1017
TOOL NAME
PART NUMBER
HARNESS CONNECTOR TEST KIT
HD-41404-C
ABS BREAKOUT BOX
HD-48642
Table 7-2. DTC C1017 Diagnostic Faults
POSSIBLE CAUSES
ECU malfunction
Open ABS fuse
Short to ground in battery circuit
Open battery circuit
Open ground circuit
1. ABS Fuse Test
1.
Test the charging system for proper operation before
proceeding. See
.
2.
Inspect the 30A ABS fuse.
3.
Is the fuse good?
a.
Yes.
b.
No.
2. Battery Circuit Short to Ground Test
1.
Connect ABS BREAKOUT BOX (Part No. HD-48642)
between wire harness [166B] and ABS module [166A].
See
2.
Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for continuity between
ABS [166B] terminals 1 and 20 at breakout box.
3.
Is continuity present?
a.
Yes. Repair short to ground ABS module [166B] ter-
minal 20 (R/V) wire and replace the 30A ABS fuse.
b.
No. Replace ECU and 30A ABS fuse. See the service
manual.
3. Battery Voltage Circuit Test
1.
Connect ABS BREAKOUT BOX (Part No. HD-48642)
between wire harness [166B] and ABS module [166A].
See
2.
Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for battery voltage
between breakout box terminals 1 and 20.
2011 Touring Diagnostics: ABS 7-5
3.
Is battery voltage present?
a.
Yes.
b.
No. Repair open in ABS module [166B] terminal 20
(R/V) wire.
4. Ground Circuit Open Test
1.
Test for continuity between breakout box terminal 11 and
ground.
2.
Is continuity present?
a.
Yes. Replace ECU. See the service manual.
b.
No. Repair open in ground circuit ABS module [166B]
terminal 11 (BK) wire.
DTC C1018
TOOL NAME
PART NUMBER
HARNESS CONNECTOR TEST KIT
HD-41404-C
ABS BREAKOUT BOX
HD-48642
Table 7-3. DTC C1018 Diagnostic Faults
POSSIBLE CAUSES
ECU malfunction
Open ground circuit
1. Ground Circuit Open Test
1.
Connect ABS BREAKOUT BOX (Part No. HD-48642)
between wire harness [166B] and ABS [166A]. See
.
2.
Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for continuity between
breakout box terminal 11 and ground.
3.
Is continuity present?
a.
Yes. Replace ECU. See the service manual.
b.
No. Repair open in ground circuit ABS module [166B]
terminal 11 (BK) wire.
7-6 2011 Touring Diagnostics: ABS
7.3
DTC C1021, C1023
DESCRIPTION AND OPERATION
TOOL NAME
PART NUMBER
DIGITAL TECHNICIAN II
HD-48650
The active WSS is supplied system voltage from the ABS
module. The sensor then returns a 7 mA or 14 mA signal back
to the ABS module.
Table 7-4. Code Description
DESCRIPTION
DTC
WSS equals 0 (Front)
C1021
WSS equals 0 (Rear)
C1023
Conditions for Setting the DTC
•
Ignition voltage is greater than 6.5V.
•
The ABS is inactive.
•
The brake is not depressed.
•
There are no WSS circuit malfunctions.
•
Vehicle must be driven above 10 mph (16 km/h) for 20
seconds without a brake input.
DTC C1021 will set if the following conditions exist for over 20
seconds:
•
The front wheel speed equals 0 mph (0 km/h).
•
The rear wheel speed is greater than 10 mph (16 km/h).
•
The difference between the two wheel speeds is greater
than 11 mph (18 km/h).
DTC C1023 will set if the following conditions exist for over 20
seconds.
•
The rear wheel speed equals 0 mph (0 km/h).
•
The front wheel speed is greater than 10 mph (16 km/h).
•
The difference between the two wheel speeds is greater
than 11 mph (18 km/h).
Action Taken When the DTC Sets
•
The ABS module disables the ABS.
•
The ABS indicator is illuminated.
Conditions for Clearing the DTC
The condition for the DTC is no longer present and the DTC
has been cleared in self-diagnostic mode or DIGITAL TECHNI-
CIAN II (Part No. HD-48650).
The ABS module automatically clears the historic DTC when
a current DTC is not detected in 50 consecutive drive cycles.
Diagnostic Tips
The following conditions are possible causes for this fault:
•
Internal sensor fault.
•
Spinning up the rear wheel over 10 mph (16 km/h) with
the vehicle in a stationary position for an extended period
of time (dynamometer).
Connector Information
For additional information about the connectors in the following
diagram(s) and diagnostic procedure(s), including the color of
the harness test kit terminal probes, see
BK
R
BK
R
BK
R
BK
R
[166A]
[166B]
BE/BN
BK/BE
F
ront
Wheel
Speed
Sensor
Lo
w
F
ront
Wheel
Speed
Sensor
High
Rear
Wheel
Speed
Sensor
High
Rear
Wheel
Speed
Sensor
Lo
w
ECU
BE/V
BE/BN
BE/V
BK/V
BK/BE
BK/V
7
7
8
8
17
17
18
18
Front
WSS
Rear
WSS
B
A
B
A
B
A
B
A
[167A]
[167B]
[168B]
[168A]
em00463
Figure 7-9. WSS
2011 Touring Diagnostics: ABS 7-7
DTC C1021, C1023
Table 7-5. DTC C1021, C1023 Diagnostic Faults
POSSIBLE CAUSES
Faulty WSS
Worn bearing assembly
Dynamometer test
1. DTC Verification Test
1.
Check for DTCs.
2.
Are any other wheel speed DTCs present?
a.
Yes. See
.
b.
No.
2. Validation of Current DTC Test
1.
Clear the DTC. See
2.
Start engine and wait 10 seconds for ABS to complete
initialization test.
3.
Did the DTC set?
a.
Yes. Replace appropriate bearing assembly and
WSS. See the service manual.
b.
No. This code may occur if the vehicle experiences
an abnormal amount of wheel slippage due to slippery
conditions under launch or intentional front or rear
wheel spin (dynamometer testing).
7-8 2011 Touring Diagnostics: ABS
7.4
DTC C1025, C1027, C1206, C1208
DESCRIPTION AND OPERATION
TOOL NAME
PART NUMBER
DIGITAL TECHNICIAN II
HD-48650
The active WSS is supplied system voltage from the ABS
module. The sensor then returns a 7 mA or 14 mA signal back
to the ABS module.
Table 7-6. Code Description
DESCRIPTION
DTC
Wheel speed signal intermittent (Front)
C1025
Wheel speed signal intermittent (Rear)
C1027
Wheel speed signal frequency out of range
(Front)
C1206
Wheel speed signal frequency out of range
(Rear)
C1208
Conditions for Setting the DTC
The DTC will set if the following conditions exist.
•
The ABS module detects a rapid variation in the wheel
speed. The wheel speed changes by 12 mph (20 km/h)
or more in 0.01 second. The change must occur 3 times
with no more than 0.2 seconds between occurrences.
•
The frequency of the wheel speed input goes above
2.5kHz for 20 milliseconds.
Action Taken When the DTC Sets
•
The ABS module disables the ABS.
•
The ABS indicator is illuminated.
Conditions for Clearing the DTC
The condition for the DTC is no longer present and the DTC
has been cleared in self-diagnostic mode or DIGITAL TECHNI-
CIAN II (Part No. HD-48650).
The ABS module automatically clears the historic DTC when
a current DTC is not detected in 50 consecutive drive cycles.
Diagnostic Tips
The following conditions are possible causes for this fault:
•
External or internal wheel speed circuit intermittent open.
•
Mismatched or improperly sized tires.
•
Electrical noise on the WSS wires.
•
Worn suspension components.
•
Rough terrain.
If the fault only occurs in moist conditions (rain, snow, vehicle
wash, etc.) inspect the wheel speed sensor and wiring for signs
of water intrusion.
Connector Information
For additional information about the connectors in the following
diagram(s) and diagnostic procedure(s), including the color of
the harness test kit terminal probes, see
BK
R
BK
R
BK
R
BK
R
[166A]
[166B]
BE/BN
BK/BE
F
ront
Wheel
Speed
Sensor
Lo
w
F
ront
Wheel
Speed
Sensor
High
Rear
Wheel
Speed
Sensor
High
Rear
Wheel
Speed
Sensor
Lo
w
ECU
BE/V
BE/BN
BE/V
BK/V
BK/BE
BK/V
7
7
8
8
17
17
18
18
Front
WSS
Rear
WSS
B
A
B
A
B
A
B
A
[167A]
[167B]
[168B]
[168A]
em00463
Figure 7-10. WSS
2011 Touring Diagnostics: ABS 7-9
DTC C1025 (FRONT), C1027 (REAR), C1206,
C1208
TOOL NAME
PART NUMBER
HARNESS CONNECTOR TEST KIT
HD-41404-C
ABS BREAKOUT BOX
HD-48642
Table 7-7. DTC C1025 (Front), C1027 (Rear), C1206, C1208
Diagnostic Faults
POSSIBLE CAUSES
Electrical interference
Poor connections
Intermittent open in WSS circuits
Faulty WSS
Worn bearing assembly
1. Electrical Interference Test
1.
Inspect vehicle for accessories that may cause electrical
interference with the wheel speed sensors.
2.
Electrical interference present?
a.
Yes. Remove or relocate interference.
b.
No.
2. Loose or Damaged Connections Test
1.
. Inspect for loose or dam-
aged connections on WSS circuits.
2.
Were poor connections found?
a.
Yes. Repair connections and circuits.
b.
No.
3. Validation of Current DTC Test
1.
Clear the DTC. See
2.
Operate vehicle under condition for running DTC.
3.
Does DTC set?
a.
Yes.
b.
No. See diagnostic tips.
4. WSS Circuit Open Test
1.
Connect ABS BREAKOUT BOX (Part No. HD-48642)
between wire harness [166B] and ABS module [166A].
See
2.
Turn IGN ON.
3.
Start engine and wait 10 seconds for ABS to complete
initialization test.
4.
While wiggling harness, using HARNESS CONNECTOR
TEST KIT (Part No. HD-41404-C) and a multimeter, check
for voltage at breakout box terminal 18 to ground (front
wheel) or terminal 7 to ground (rear wheel).
5.
Does voltage drop out intermittently?
a.
Yes. Repair open in circuits.
b.
No.
5. Worn or Damaged Components Test
1.
Inspect for worn or damaged suspension components.
2.
Were worn or damaged components found?
a.
Yes. Replace worn or damaged components as
necessary.
b.
No. Replace the appropriate bearing assembly and
WSS. See the service manual.
7-10 2011 Touring Diagnostics: ABS
DTC C1032
TOOL NAME
PART NUMBER
HARNESS CONNECTOR TEST KIT
HD-41404-C
ABS BREAKOUT BOX
HD-48642
Table 7-9. DTC C1032 Diagnostic Faults
POSSIBLE CAUSES
Open front WSS circuit
Short to ground in front WSS circuit
Front WSS open
Front wheel speed signal wire shorted to voltage
1. Validation of Current DTC Test
1.
Clear the DTC. See
2.
Start engine and wait 10 seconds for ABS to complete
initialization test.
3.
Did the DTC set?
a.
Yes.
b.
No. See diagnostic tips.
2. Front WSS Low Circuit Test
1.
Connect ABS BREAKOUT BOX (Part No. HD-48642)
between wire harness [166B] and ABS [166A]. See
2.
Turn IGN ON with the engine stop switch in the RUN
position.
3.
Wait 10 seconds for ABS module to complete initialization
test.
4.
Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, measure voltage between
breakout box terminal 18 and ground.
5.
Is voltage below 0.5V?
a.
Yes.
b.
No.
3. Front WSS Circuits Short to Ground Test
1.
Disconnect ABS module [166A] from the breakout box.
2.
Test breakout box terminal 17 for short to ground, and
terminal 18 for short to ground.
3.
Is short to ground present?
a.
Yes.
b.
No.
4. Front WSS High Circuit Test
1.
Disconnect front WSS [167].
2.
Test for continuity between breakout box terminal 17 and
[167B] terminal A.
3.
Is continuity present?
a.
Yes.
b.
No. Repair open between ABS module [166B] ter-
minal 17 and front WSS [167B] terminal A (BK/BE)
wire.
5. Front WSS Low Circuit Open Test
1.
Test for continuity between breakout box terminal 18 and
front WSS [167B] terminal B.
2.
Is continuity present?
a.
Yes. Replace front WSS. See the service manual.
b.
No. Repair open between ABS module [166B] ter-
minal 18 and front WSS [167B] terminal B (BK/V)
wire.
6. Front WSS Short to Ground Test
1.
Disconnect front WSS [167].
2.
Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test breakout box terminals
17 and 18 for short to ground.
3.
Is a short to ground present?
a.
Yes. Repair short to ground in appropriate circuit.
b.
No. Replace front WSS. See the service manual.
7. Front WSS Circuits Short to Voltage Test
1.
Disconnect ABS module [166A] from breakout box.
2.
Test breakout box terminals 17 and 18 for short to voltage.
3.
Is a short to voltage present?
a.
Yes.
b.
No.
8. Front WSS Circuits Shorted Together Test
1.
Disconnect front WSS [167].
2.
Test breakout box terminals 17 and 18 for continuity.
3.
Is continuity present?
a.
Yes. Repair short in appropriate circuit.
b.
No.
9. Front WSS Continuity Test
1.
Test for continuity across terminals A and B at front WSS
[167A].
2.
Is continuity present?
a.
Yes. Replace ECU. See the service manual.
b.
No. Replace front WSS. See the service manual.
10. Front WSS Short to Voltage Test
1.
Disconnect front WSS [167].
2.
Test breakout box terminals 17 and 18 for short to voltage.
7-12 2011 Touring Diagnostics: ABS
3.
Is short to voltage present?
a.
Yes. Repair short to voltage in appropriate circuit.
b.
No. Replace front WSS. See the service manual.
DTC C1034
TOOL NAME
PART NUMBER
HARNESS CONNECTOR TEST KIT
HD-41404-C
ABS BREAKOUT BOX
HD-48642
Table 7-10. DTC C1034 Diagnostic Faults
POSSIBLE CAUSES
Open rear WSS circuit
Short to ground in rear WSS circuit
Rear WSS open
Rear wheel speed signal wire shorted to voltage
1. Validation of Current DTC Test
1.
Clear the DTC. See
2.
Start engine and wait 10 seconds for ABS to complete
initialization test.
3.
Did the DTC set?
a.
Yes.
b.
No. See diagnostic tips.
2. Rear WSS Low Circuit Test
1.
Connect ABS BREAKOUT BOX (Part No. HD-48642)
between wire harness [166B] and ABS module [166A].
See
2.
Turn IGN ON with the engine stop switch in the RUN
position.
3.
Wait 10 seconds for ABS module to complete initialization
test.
4.
Using HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, measure voltage at breakout
box between terminal 7 and ground.
5.
Is voltage below 0.5V?
a.
Yes.
b.
No.
3. Rear WSS Circuits Short to Ground Test
1.
Disconnect ABS module [166A] from the breakout box.
2.
Test breakout box [166B] terminals 7 and 8 for continuity
to ground.
3.
Is continuity present?
a.
Yes.
b.
No.
4. Rear WSS High Circuit Test
1.
Disconnect rear WSS [168].
2.
Test for continuity between breakout box terminal 8 and
[168B] terminal A.
3.
Is continuity present?
a.
Yes.
b.
No. Repair open in rear WSS high circuit.
5. Rear WSS Low Circuit Open Test
1.
Test for continuity between breakout box terminal 7 and
[168B] terminal B.
2.
Is continuity present?
a.
Yes. Replace rear WSS. See the service manual.
b.
No. Repair open between ABS module [166B] ter-
minal 17 and [168B] terminal A (BE/BN) wire.
6. Rear WSS Circuits Short to Ground Test
1.
Disconnect rear WSS [168].
2.
Test breakout box terminals 7 and 8 for continuity to
ground.
3.
Is continuity present?
a.
Yes. Replace rear WSS. See the service manual.
b.
No. Repair short to ground in appropriate circuit.
7. Rear WSS Circuits Short to Voltage Test
1.
Disconnect ABS module [166A] from the breakout box.
2.
Test breakout box terminals 7 and 8 for short to voltage.
3.
Is a short to voltage present?
a.
Yes.
b.
No.
8. Rear WSS Circuits Shorted Together Test
1.
Disconnect rear WSS [168].
2.
Test breakout box terminals 7 and 8 for continuity.
3.
Is continuity present?
a.
Yes. Repair short in appropriate circuit.
b.
No.
9. Rear WSS Continuity Test
1.
Test for continuity across terminals A and B at rear WSS
[168A].
2.
Is continuity present?
a.
Yes. Replace ECU. See the service manual.
b.
No. Replace rear WSS. See the service manual.
10. Rear WSS Short to Voltage Test
1.
Disconnect rear WSS [168].
2.
Test breakout box terminals 7 and 8 for short to voltage.
3.
Is a short to voltage present?
a.
Yes. Repair short to voltage in appropriate circuit.
b.
No. Replace rear WSS. See the service manual.
2011 Touring Diagnostics: ABS 7-13
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