Harley Davidson 2011 Touring Models. Electrical Diagnostic Manual

4.4

NO INSTRUMENT POWER

DESCRIPTION AND OPERATION

. The speedometer and tachometer (if equipped)

receive battery power at terminal 5 and ignition power at ter-
minal 1. This is supplied through the battery fuse and the
instrument fuse located in fuse block [64]. Accessory power is
supplied through the ACCY fuse at terminal 6. The speedo-
meter and tachometer (if equipped) go through an initialization
sequence every time power is removed and re-applied to ter-
minal 1. The visible part of this sequence is the illumination of
check engine lamp, security lamp, backlighting, odometer and
fuel level. With IGN ON, the check engine lamp and security
lamp will illuminate for 4 seconds and then (if parameters are
normal) go out.

Loss of power on any of the inputs will change the instruments
behavior. Refer to

Table 4-7

ed03111

Security siren [142]

Security siren (if equipped)

Fuse block

Main fuse [5]

DLC [91]

ABS diode pack [201] (if equipped)

Figure 4-4. Under Left Side Cover: Except FLTRX, FLHX,

FLHTC

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

B.1 CONNECTORS

Table 4-7. Function Chart - Loss of Input

TERMINAL 7 (GND)

TERMINAL 6 (ACC)

TERMINAL 1 (IGN)

TERMINAL 5 (BATTERY)

Instrument completely non-func-
tional

Speedometer non-func-
tional in ACC position.

Will not "WOW". See

2.1 INITIAL

DIAGNOSTICS, Diagnostics

Speedometer is non-functional

Diagnostics absent

Check engine, low fuel,
battery, cruise and ABS
lamps non-functional

Needles freeze, backlighting is
functional

Check engine lamp, low fuel and
battery lamp are non-functional.
Diagnostics absent.

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4-8 2011 Touring Diagnostics: Instruments

R/GY

R/BK

R/GY

Right GND 2

TSM/TSSM/HSFM

Tachometer

Speedometer

(All)

Radio

FLHX,FLHTC/CU,FLTR

FLHR/C

ABS

(Optional)

ECM

DLC

[64-1B]

BK/GN

LGN/V

BN/GY

BK/GN

BN/GY

BK/GN

BN/GY

BK/GN

BN/GY

O/W

LGN/V

O/W

LGN/V

O/W

BK/GN

LGN/V

BN/GY

O/W

BK/GN

LGN/V

BN/GY

O/W

[20A]

[20B]

BK/GN

LGN/V

BN/GY

O/W

[166A]

[166B]

[78A]

[78B]

[1B]

[1A]

[2B]

[2A]

[27B]

[27A]

[108B]

[108A]

[39B]

[39A]

[30B]

[30A]

[91A]

Battery

15A

Accessory

15A

[64-2B]

INSTRS

15A

Ignition

15A

Accessory

Power

Battery

Power

Ignition

Power

em00825

Figure 4-5. Instruments Power Circuit Diagram

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2011 Touring Diagnostics: Instruments 4-9

SPEEDOMETER INOPERATIVE

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

BREAKOUT BOX

HD-42682

BREAKOUT BOX ADAPTERS

HD-46601

Table 4-8. Speedometer Inoperative Diagnostic Faults

POSSIBLE CAUSES

Instrument malfunction

Open accessory circuit

Open battery circuit

Open ignition circuit

Short to ground in cooling fan circuit

Ignition switch malfunction

Short to ground in ignition circuit

Open ground circuit

Short in accessory circuit

1. Battery and Ignition Function Test

Turn IGN ON.

Does the speedometer have full function?

Yes.

Go to Test 2.

No, check engine lamp, battery lamp and security
lamp are inoperative but backlighting is func-
tional.

Go to Test 8.

No, speedometer does not operate at all.

Go to

Test 4.

2. Accessory Function Test

Turn IGN to ACC.

Does the instrument have full ACC function?

Yes. Concern is intermittent, perform a wiggle test to
test for intermittent. See

1.3 DIAGNOSTICS AND

TROUBLESHOOTING, Wiggle Test

No.

Go to Test 3.

3. Accessory Fuse Test

With IGN OFF, connect BREAKOUT BOX
ADAPTERS (Part No. HD-46601) to [39]. Attach con-
nectors from BREAKOUT BOX (Part No. HD-42682) to
harness adapters leaving [39A] disconnected. See

1.2 DIAGNOSTIC TOOLS

Turn IGN ON.

Using the HARNESS CONNECTOR TEST KIT (Part
No. HD-41404-C) and a multimeter, test for voltage at
breakout box terminal 6.

Is battery voltage present?

Yes. Replace the speedometer. See the service
manual. (7311)

No. Repair open in (O/W) wire. (5043)

4. Battery Fuse Test

Inspect the battery fuse.

Is the fuse good?

Yes.

Go to Test 5.

No.

Go to Test 7.

5. Battery Circuit to Battery Fuse Test

Test for voltage at [64-1B] socket terminal 2C.

Is battery voltage present?

Yes.

Go to Test 6.

No. Repair open between battery fuse and main fuse
(R) wire. (5041)

6. Battery Circuit to Speedometer Test

With IGN OFF, connect BREAKOUT BOX
ADAPTERS (Part No. HD-46601) to [39]. Attach con-
nectors from BREAKOUT BOX (Part No. HD-42682) to
harness adapters leaving [39A] disconnected. See

1.2 DIAGNOSTIC TOOLS

Install battery fuse in fuse block.

Test for voltage at breakout box terminal 5.

Is battery voltage present?

Yes.

Go to Test 13.

No. Repair open between [39B] terminal 5 and [64-
1B] socket terminal 2D (BN/GY) wire. (5041)

7. Battery Circuit Short to Ground Test

With IGN OFF, connect BREAKOUT BOX
ADAPTERS (Part No. HD-46601) to [39]. Attach con-
nectors from BREAKOUT BOX (Part No. HD-42682) to
harness adapters leaving [39A] disconnected. See

1.2 DIAGNOSTIC TOOLS

Test for continuity between breakout box terminal 5 and
ground.

Is continuity present?

Yes. Repair short to ground in (BN/GY) wire. (5041)

No. Concern is intermittent, perform a wiggle test to
test for intermittent. See

1.3 DIAGNOSTICS AND

TROUBLESHOOTING, Wiggle Test

. Replace the

battery fuse.

8. Ignition Circuit Test

Turn IGN OFF for at least 15 seconds.

Turn IGN ON and the engine stop switch to RUN.

Does the fuel pump run and then shut off?

Yes.

Go to Test 9.

No.

Go to Test 10.

9. Instrument Power Circuit Test

With IGN OFF, disconnect speedometer [39].

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4-10 2011 Touring Diagnostics: Instruments

Connect BREAKOUT BOX ADAPTERS (Part No. HD-
46601) to [39]. Attach connectors from BREAKOUT
BOX (Part No. HD-42682) to harness adapters leaving
[39A] disconnected. See

1.2 DIAGNOSTIC TOOLS

With IGN ON, test for voltage between breakout box ter-
minal 1 and ground.

Is battery voltage present?

Yes. Replace speedometer. See the service manual.
(7311)

No. Repair open in (O) ignition wire. (5041)

10. Ignition Fuse Test

Inspect the ignition fuse.

Is the fuse good?

Yes.

Go to Test 11.

No.

Go to Test 12.

11. Ignition Power to Instrument Fuse Test

With IGN ON, test for battery voltage between [64-2B]
socket terminal 1D and ground.

Is battery voltage present?

Yes. Repair open in (O) wire. (5041)

No. Inspect wiring from instrument fuse to ignition
switch for an open or damaged condition. If the wiring
is good replace the ignition switch. See the service
manual. (7287)

12. Ignition Power Short to Ground Test

Test for continuity between [64-2B] socket terminal 1D
and ground.

Is continuity present?

Yes. Repair short to ground in (O) wire. Replace
instrument fuse. (5041)

No. Replace the ignition fuse and verify operation.
(6729)

13. Ground Circuit Test

Using the HARNESS CONNECTOR TEST KIT (Part
No. HD-41404-C) and a multimeter, test for continuity
between breakout box terminal 7 and ground.

Is continuity present?

Yes. Replace the speedometer. See the service
manual. (7311)

No. Repair open in (BK/GN) wire. (5041)

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2011 Touring Diagnostics: Instruments 4-11

4.5

INDICATOR LAMPS

DESCRIPTION AND OPERATION

See

Figure 4-6

. The battery, check engine, security and low

fuel indicators are located in the speedometer. The other
indicators are located separately from the speedometer.

110

120

60 70

100

MPH

ARLEY-DAVIDSON

CERTIFIED

RPM x100

ARLEY-DAVIDSON

ed03170

Check engine lamp

Speedometer

Security lamp (key icon)

Battery discharge lamp

Sixth gear lamp

Tachometer

10.

Cruise lamp

ABS lamp

11.

Pursuit lamp (Police models)

Odometer/trip odometer/clock

Low fuel warning lamp

Figure 4-6. Speedometer

Table 4-9. Indicator Lamp Wiring

CONNECTION

INDICATOR LAMP

Serial data

Check engine

Serial data

Security

Serial data

Battery

Serial data

Sixth gear indicator

Ground through switch

Oil pressure

Ground through switch

Neutral

12V when active

High beam

12V when active

Right/left turn

1.0 gal (3.8 L)

Low fuel

Low Fuel Indicator

See

Figure 4-7

. The low fuel indicator is controlled at terminal

9 (Y/W) of the speedometer. The fuel gauge sends voltage on
the (Y/W) wire to the low fuel lamp and fuel level sender. When
the fuel drops below 1.0 gal (3.8L), the resistance in the fuel
level sender reaches a point that causes enough of a change
in the voltage on the (Y/W) wire it signals the speedometer to
activate the low fuel lamp.

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4-12 2011 Touring Diagnostics: Instruments

ed03066

Radio [28]

Right front speaker [34+]

10.

Right front speaker [34-]

Radio [27]

11.

GPS [193]

Voltmeter [111]

12.

Voltmeter lamp [110]

Main to interconnect harness [1]

13.

Main to interconnect harness [15]

Tachometer [108]

14.

Speedometer [39]

TGS harness [204]

15.

Interconnect to right handle bar switches [22]

Indicator lamps [21]

16.

CB antenna cable [50]

Right front turn signal/auxiliary lamp [31R]

Figure 4-8. Right Side Behind Upper Fairing

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4-14 2011 Touring Diagnostics: Instruments

ed03124

Starter

Starter solenoid [128]

Neutral switch [131]

Figure 4-9. Starter Solenoid [128]

Neutral Indicator

See

Figure 4-9

. The neutral indicator is controlled through the

(TN) wire connected to the TSM/TSSM/HFSM and the neutral
switch. When the transmission is in neutral, the neutral switch
closes and illuminates the neutral indicator.

ed03085

Oil pressure [139]

Front frame down tube

Figure 4-10. Oil Pressure Switch

Oil Pressure Indicator

See

Figure 4-10

. The oil pressure indicator is connected to the

oil pressure switch. The switch closes when oil pressure is low
and illuminates the oil pressure indicator. This is why the oil
pressure indicator is illuminated with the IGN ON and the
engine OFF.

Turn Signal Indicators

The turn signal indicators are controlled by the
TSM/TSSM/HFSM. When the TSM/TSSM/HFSM receives an
input from the left or right turn signal switch it flashes the correct
turn signals including the turn signal indicators. When the left
turn signal switch is pressed voltage is supplied on the (V) wire
to the left turn signals including the turn signal indicator. When
the right turn signal switch is pressed, voltage is supplied on
the (BN) wire to the right turn signals including the indicator.

High Beam Indicator

This circuit is powered when the headlamp switch is placed in
the high beam position. In the high position, voltage is supplied
to the (W) wire and the high beam headlamps. This wire also
supplies power to the high beam indicator, causing it to illu-
minate.

Sixth Gear Indicator

The sixth gear indicator illuminates indicating the vehicle is in
sixth gear. This is done by the ECM. The ECM monitors the
vehicle speed and engine rpm with the clutch engaged. It then
sends a signal over the serial data circuit to illuminate the
indicator when the parameters are correct for sixth gear oper-
ation. Therefore, there may be a delay in the indicator illumin-
ating when shifting to sixth gear. The ECM recieves clutch
switch status from the TSM/TSSM/HFSM. Pulling in the clutch
lever will cause the sixth gear indicator to turn off.

If the sixth gear indicator is inoperative or always on check for
any DTCs. If no DTCs are present, verify the clutch switch is
operating properly. If the clutch is disengaged without moving
the clutch switch, the sixth gear indicator may come on briefly
due to reduced engine rpm during shifting. If none of these
conditions exist and the sixth gear indicator is malfunctioning
replace the speedometer.

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

B.1 CONNECTORS

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2011 Touring Diagnostics: Instruments 4-15

[30B]

[30A]

GN/Y

Chassis

Ground

TSM/

TSSM/

HFSM

Neutral

Switch

Left

GND 1

Right

GND 2

Ignition Power

Turn

Signals

Neutral Switch

Left Turn Feed

Right Turn Feed

FLHR/C

Speedometer

Headlamps

Headlamp

Switch

Except FLHR/C

GN/Y

Indicators

GN/Y

Indicators

[21B]

[21A]

6 2

5 1

[21B]

[21A]

BK/GN

Left

GND 1

BK/GN

GN/Y

Headlamps

Headlamp

Switch

[20A]

[20B]

10 9

[2A]

[2B]

[15B]

[15A]

[1A]

[1B]

[131B]

[131A]

[120B]

[120A]

GN/Y

Oil

Pressure

Switch

[139B]

[139A]

GN/Y

Oil

Pressure

Switch

FLHR/C

Except

FLHR/C

em00720

Figure 4-11. Indicator Lamps

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4-16 2011 Touring Diagnostics: Instruments

OIL PRESSURE LAMP ALWAYS ON

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

Table 4-10. Oil Pressure Lamp Always On Diagnostic

Faults

POSSIBLE CAUSES

Short to ground in oil pressure circuit

Indicator malfunction

Mechanical issue

Oil pressure switch malfunction

1. Oil Pressure Lamp Function Test

Turn IGN ON with the engine OFF.

Does the oil pressure lamp illuminate?

Yes.

Go to Test 2.

No. See

4.5 INDICATOR LAMPS, Oil Pressure Lamp

Inoperative

2. Engine Running Test

Start the engine.

Does the oil pressure lamp turn OFF and stay off?

Yes. Oil pressure lamp is operating properly. Test for
intermittent. See

1.3 DIAGNOSTICS AND

TROUBLESHOOTING, Wiggle Test

No.

Go to Test 3.

3. Oil Pressure Sensor Test

Disconnect the oil pressure sensor [120] or [139].

Does the oil pressure lamp turn OFF?

Yes.

Go to Test 5.

No.

Go to Test 4.

4. Oil Pressure Circuit Test

With IGN OFF, disconnect indicator lamps [21].

Using the HARNESS CONNECTOR TEST KIT (Part
No. HD-41404-C) and a multimeter, test for continuity
between [21A] terminal 3 (FLHR/C) or terminal 2 (except
FLHR/C) and ground.

Is continuity present?

Yes. Repair short to ground between [21A] terminal
3 (FLHR/C) or terminal 2 (except FLHR/C) and [120B]
terminal 1 (GN/Y) wire. (5041)

No. Repair or replace the indicator harness. See the
service manual. (5191)

5. Mechanical Test

Inspect the engine for any issues that may affect oil pres-
sure. See the service manual.

Was the problem found?

Yes. Repair as needed.

No. Replace the oil pressure switch. See the service
manual. (5161)

OIL PRESSURE LAMP INOPERATIVE

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

Table 4-11. Oil Pressure Lamp Inoperative Diagnostic

Faults

POSSIBLE CAUSES

Oil pressure switch malfunction

Open oil pressure circuit

Indicator malfunction

1. Oil Pressure Lamp Function Test

Turn IGN ON with the engine OFF.

Does the oil pressure lamp illuminate?

Yes. Test for intermittent. See

1.3 DIAGNOSTICS

AND TROUBLESHOOTING, Wiggle Test

No.

Go to Test 2.

2. Oil Pressure Switch Test

Disconnect the oil pressure sensor [120] or [139].

Using the HARNESS CONNECTOR TEST KIT (Part
No. HD-41404-C), connect [120B] terminal 1 to ground.

Does the oil pressure lamp turn ON?

Yes. Replace oil pressure switch. See the service
manual. (5161)

No.

Go to Test 3.

3. Oil Pressure Circuit Test

With IGN OFF, disconnect console harness [20].

Test for continuity between indicator lamps [21A] terminal
3 (FLHR/C) or terminal 2 (except FLHR/C) and [120B]
terminal 1 or [139B] terminal A.

Is continuity present?

Yes. Repair or replace the indicator harness. See the
service manual. (5191)

No. Repair open between [21] and [120] (GN/Y) wire.
(5041)

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2011 Touring Diagnostics: Instruments 4-17

NEUTRAL LAMP ALWAYS ON

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

Table 4-12. Neutral Lamp Always On Diagnostic Faults

POSSIBLE CAUSES

Neutral switch malfunction

Short to ground in neutral circuit

Indicator malfunction

TSM/TSSM/HFSM malfunction

1. Neutral Lamp Function Test

With the vehicle in neutral, turn IGN ON with the engine
OFF.

Does the neutral lamp illuminate?

Yes.

Go to Test 2.

No. See

4.5 INDICATOR LAMPS, Neutral Lamp

Inoperative

2. Transmission Operation Test

Shift the transmission out of neutral.

Does the neutral lamp turn OFF and stay off?

Yes. Neutral lamp is operating properly. Test for
intermittent. See

1.3 DIAGNOSTICS AND

TROUBLESHOOTING, Wiggle Test

No.

Go to Test 3.

3. Neutral Switch Test

Disconnect the neutral switch [131].

Does the neutral lamp turn OFF?

Yes. Replace the neutral switch. See the service
manual. (5157)

No.

Go to Test 4.

4. TSM/TSSM/HFSM Test

Disconnect the TSM/TSSM/HFSM [30].

Does the neutral lamp turn OFF?

Yes. Replace the TSM/TSSM/HFSM. See the service
manual. (6845)

No.

Go to Test 5.

5. Neutral Switch Circuit Test

Disconnect indicator lamps [21].

Using the HARNESS CONNECTOR TEST KIT (Part
No. HD-41404-C) and a multimeter, test for continuity
between [21A] terminal 5 (FLHR/C) or terminal 7 (except
FLHR/C) and ground.

Is continuity present?

Yes. Repair short to ground in (TN) wire. (5041)

No. Repair or replace the indicator harness. See the
service manual. (5191)

NEUTRAL LAMP INOPERATIVE

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

Table 4-13. Neutral Lamp Inoperative Diagnostic Faults

POSSIBLE CAUSES

Neutral switch malfunction

Open ground circuit

Open neutral switch circuit

Indicator malfunction

1. Neutral Lamp Function Test

With the vehicle in neutral, turn IGN ON with the engine
OFF.

Does the neutral lamp illuminate?

Yes. Test for intermittent. See

1.3 DIAGNOSTICS

AND TROUBLESHOOTING, Wiggle Test

No.

Go to Test 2.

2. Neutral Switch Test

Disconnect the neutral switch [131].

Using the HARNESS CONNECTOR TEST KIT (Part
No. HD-41404-C), jump the (TN) wire to ground.

Does the neutral lamp turn ON?

Yes. Replace the neutral switch. See the service
manual. (5157)

No.

Go to Test 3.

3. Neutral Switch Power Circuit Open Test

With IGN OFF, disconnect indicator lamps [21].

Using the HARNESS CONNECTOR TEST KIT (Part
No. HD-41404-C) and a multimeter, test for continuity
between [21A] terminal 5 (FLHR/C) or terminal 7 (except
FLHR/C) and [131B] (TN) wire.

Is continuity present?

Yes. Repair or replace the indicator harness. See the
service manual. (5191)

No. Repair open in (TN) wire between [21] and neutral
switch. (5041)

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4-18 2011 Touring Diagnostics: Instruments

HIGH BEAM INDICATOR LAMP
INOPERATIVE

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

Table 4-14. High Beam Indicator Lamp Inoperative

Diagnostic Faults

POSSIBLE CAUSES

Indicator malfunction

Open High beam indicator circuit

1. High Beam Indicator Function Test

With IGN ON, operate the headlamp switch.

Do the high and low beam headlamps function correctly?

Yes.

Go to Test 2.

No. See

5.7 HEADLAMPS

2. High Beam Indicator Circuit Test

With the IGN OFF, disconnect indicator lamps [21].

With the IGN ON and the headlamp switch in the high
position and using HARNESS CONNECTOR TEST
KIT (Part No. HD-41404-C) and a multimeter, test for
voltage at [21A] terminal 2 (FLHR/C) or terminal 3 (except
FLHR/C).

Is voltage present?

Yes. Repair or replace the indicator harness. See the
service manual. (5191)

No. Repair open in (W) wire between headlamp
switch and [21A]. (5041)

TURN SIGNAL INDICATOR INOPERATIVE

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

Table 4-15. Turn Signal Indicator Inoperative Diagnostic

Faults

POSSIBLE CAUSES

Indicator malfunction

Open turn signal circuit

1. Turn Signal Function Test

With ignition ON, operate the turn signals.

Do the turn signals operate?

Yes.

Go to Test 2.

No. See

5.6 TURN SIGNALS

2. Turn Signal Indicator Circuit Test

With IGN OFF, disconnect indicator lamps [21].

With the IGN ON and the turn signals activated and using
the HARNESS CONNECTOR TEST KIT (Part No. HD-
41404-C) and a multimeter, test for voltage at [21A] (V)
and (BN) wires.

Is voltage cycling on and off?

Yes. Repair or replace the indicator harness. See the
service manual. (5191)

No. Repair open between [21A] and [30B] (V) or (BN)
wire. (5041)

HOME

2011 Touring Diagnostics: Instruments 4-19

4.6

GAUGES

THEORY OF OPERATION

See

Figure 4-12

. With ignition switch turned to IGNITION, the

fuel gauge is connected to +12 Volts. Current flows through
the gauge and variable resistor in the fuel gauge sending unit
to ground. The sending unit float controls the amount of resist-
ance in the variable resistor.

Inoperative gauges may be caused by any of the following:

•

Sender or fuel gauge not grounded.

•

Malfunction in sender or fuel gauge.

•

Inoperative or disconnected wire from ignition switch to
fuel gauge.

•

Corroded connections at fuel gauge.

Use the

4.6 GAUGES, Fuel Gauge and Sender Test

to test

suspect components.

FUEL GAUGE AND SENDER TEST

TOOL NAME

PART NUMBER

MULTI-METER

HD-35500

NOTE

Always refer to the applicable wiring diagram when
troubleshooting instruments or gauges.

Remove gauge. Ground (Y/W) wire of fuel level sender
located at bottom of gauge. Turn ignition switch to IGNI-
TION.

Fuel gauge must indicate FULL. If gauge indicates
FULL, gauge is functioning correctly. Proceed to step
2.

If gauge did not indicate FULL, proceed to step 3.

Set MULTI-METER (Part No. HD-35500) to RXI scale to
measure the resistance of the sending unit. Place one
probe on (Y/W) and the other probe on chassis ground.

If fuel tank is full, the reading should be 30-50 Ohms.
An empty tank should have a 240-260 Ohms resist-
ance. A half full tank is approximately 125-165 Ohms.

If a very high resistance or infinity is indicated on the
meter, the sender may be open or not grounded.
Check that the sender and fuel tank are grounded by
placing one probe of Multi-Meter on sender flange
and the other probe on crankcase. Meter must
indicate one Ohm or less. Replace sender if one Ohm
or less was present. If a higher resistance is present,
check for poor connection on ground wire.

Check voltage to (O/W) (+) and (BK) (-) wire of fuel gauge
connector [117] if gauge did not indicate FULL.

Correct reading is equivalent to battery voltage.

If battery voltage is not present, check for inoperative
or disconnected wire. Replace gauge if wiring problem
is not found.

To +12V

To Sender

NOTE

All gauges are shown

as viewed from rear.

Oil

Pressure

Voltmeter

GND

BN/GN

Light

em01174

Figure 4-12. Connections for Gauges

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4-20 2011 Touring Diagnostics: Instruments

OIL PRESSURE GAUGE AND INDICATOR
LIGHT

TOOL NAME

PART NUMBER

HARNESS CONNECTOR TEST KIT

HD-41404-C

Problem

Low oil pressure light remains on with engine running above
idle and/or oil pressure gauge does not work.

Do not operate the engine when the oil level is below the
add mark on the dipstick at operating temperature. Engine
damage will result. (00187b)

Table 4-16. Oil Pressure Gauge and Indicator Light

SOLUTION

CAUSE

Check oil level. Add oil if low.

No oil pressure due to lack of oil or faulty
oil pump.

Restart engine and verify oil pressure light goes off and gauge indicates pressure. If
problem still exists, refer to oil pump in the service manual.

Locate the oil pressure sending unit on the front right side of the crankcase.

Contacts in pressure sending unit not
opening to shut off light. Variable resistor
in sender is shorted to ground.

Verify the electrical connector is properly connected to the sending unit.

If the oil pressure gauge indicates pressure but the low oil pressure light remains on
proceed as follows:
•

Remove electrical connector from oil pressure sending unit. Using ohmmeter
and HARNESS CONNECTOR TEST KIT (Part No. HD-41404-C) gray socket
probe and patch cord, place one probe on indicator lamp terminal (closest to
latch on sending unit), place the other probe on the crankcase. Ohmmeter must
read less than one Ohm.

•

Start the engine and run at a fast idle. The ohmmeter must read infinity.

•

Replace the sending unit if the above meter readings are not obtained.

If the low oil pressure light functions correctly, but the pressure gauge does not, then
proceed as follows:
•

Remove electrical connector from oil pressure sending unit. Turn the ignition
switch to IGNITION. The gauge must read zero.

•

Ground (BN/GN) wire terminal to crankcase. The gauge must read full scale 60
PSI (414 kPa).

•

Replace the sending unit if the above gauge readings are obtained. If the gauge
readings are not obtained, then replace the pressure gauge.

See Voltmeter Gauge. See

4.6 GAUGES, Voltmeter Gauge

No power to gauge.

AMBIENT AIR TEMPERATURE GAUGE

Problem

Gauge inoperative.

Table 4-17. Ambient Air Temperature Gauge

SOLUTION

CAUSE

Test for continuity between terminal 1 and ground and terminal 3 and gauge. Repair
if open.

Sensor not grounded or open between
sensor and gauge.

Check for battery voltage between terminals 1 and 3 at connector [115A]. Replace
gauge if voltage is present. Use voltage drop tests and continuity checks to isolate if
voltage is not present.

Broken or disconnected power or ground
wire to gauge.

Measure resistance between terminals 1 and 3 at 65-85 °F (18.3-29.4 °C). Resistance
should be 31-43 Ohms. Replace sensor if out of range, replace gauge if within range.

Malfunction in gauge or sensor.

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2011 Touring Diagnostics: Instruments 4-21

Harley Davidson 2011 Touring Models. Electrical Diagnostic Manual - page 11