Harley Davidson Touring 2004 Service Manual fe05b

f1939x9x

MAP Sensor

7

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DTC P0107, P0108 5.19

GENERAL

MAP Sensor

See Figure 5-45. The manifold absolute pressure sensor (MAP sensor) is supplied 5 volts from the ECM (Pin 14) and sends a signal back to the ECM (Pin 25). This signal varies in accordance with engine vacuum and atmospheric barometric pressure. Changes in barometric pressure are inﬂuenced by weather and altitude.

Table 5-26. Code Description

DTC

P0107 MAP sensor open/low P0108 MAP sensor high

DESCRIPTION

DIAGNOSTICS

Diagnostic Tips

●

These codes will set if the MAP sensor signal is out of range. Code P0108 can only be detected with the engine running.

MAP sensor output check. Using the VACUUM PUMP

●

(Part No. HD-23738), apply a vacuum to the pressure port of the MAP sensor. The signal voltage should lower as the vacuum is applied.

●

The MAP, TP and VSS sensors are connected to the same reference line (+5V Vref). If the reference line goes to ground or open, multiple codes will be set (DTC P0107, P0108, P0122, P0123, P0501, P0502).

Figure 5-45. Induction Module (Top View)

Diagnostic Notes

The reference numbers below correlate with the circled numbers on the Test 5.19 ﬂow charts.

1. Connect BREAKOUT BOX (Part No. HD-43876) between wire harness and ECM. See Section 5.7 BREA-

KOUT BOX: EFI.

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

41404), gray pin probes and patch cords.

2004 Touring: Engine Management (EFI) 5-69

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f1743q9s

MAP

Sensor

[80A]

[80B]

AB

A

BC

V/W

BK/W

To TP and

VSS sensors

C

R/W

To TP, ET &

IAT Sensors

V/W

BK/W

[78B] [78A]

14 25 26

ECM

Figure 5-46. MAP Sensor Circuit

Table 5-27. Wire Harness Connectors in Figure 5-46.

NO.

[78] ECM 36-Place Packard Under Right Side Cover [80] MAP Sensor 3-Place Packard Top of Induction Module

5-70 2004 Touring: Engine Management (EFI)

DESCRIPTION TYPE LOCATION

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Test 5.19 (Part 1 of 2)

MAP SENSOR: DTC P0107, P0108

Connect Breakout Box. With ignition ON,

1

measure voltage between terminal 25

and terminal 26 on Breakout Box.

With key ON, engine OFF, voltage must be

between 3.5 and 5.0 volts.

With key ON, engine running, voltage must

be between 1.5-3.0 volts at hot idle.

Does voltage fit specifications?

YES

Perform 5.8 WIGGLE TEST

to check for intermittents.

Intermittents present?

YES

To identify the source of intermittents,

start with box marked by Bold Asterisk

under Test 5.19 (Part 2 of 2). Wiggle

harness while watching DVOM.

YES

Install original MAP sensor.

Replace ECM (reprogram,

relearn) and road test again

to verify.

NO

Replace MAP sensor. Clear codes and road

test. Did check engine lamp illuminate and

set DTC P0107 or P0108?

NO

System

now OK.

NO

STOP

Go to Test 5.19 (Part 2 of 2).

At some point in the ﬂow chart you may be instructed to jump directly to a the box with the bold asterisk. Disregard the asterisk (but not the instruction box) if your normal progression through the chart brings you to this location.

2004 Touring: Engine Management (EFI) 5-71

Clear codes using speedometer self diagnostics.

See 5.6 SPEEDOMETER SELF DIAGNOSTICS. Conﬁrm proper operation with no check engine

lamp.

HOME

Test 5.19 (Part 2 of 2)

MAP SENSOR: DTC P0107, P0108

Continued from

Test 5.19 (Part 1 of 2).

Check the 5 volt reference supply at

the MAP sensor connector [80B]. With

2

ignition ON, measure voltage between

terminal C (R/W) and terminal A (BK/W).

Voltage approximately 5.0 volts?

YES

Connect Breakout Box to connector [78B]

leaving ECM disconnected.

OPEN CHECK: Measure resistance

2

between MAP connector [80B]

Terminal B and Breakout Box terminal 25.

Resistance less than 1 ohm?

YES

SHORT CHECK: Measure

2

resistance between MAP connector Terminal B and chassis

ground. Resistance greater

than 1 megohm?

YES

Replace MAP sensor. See

Touring Service Manual.

NO.

Greater

than 6V.

Locate short to 12 volts on R/W

wire in wire harness. Repair as

necessary.

NO

Locate and repair

open on V/W wire.

NO

Locate and repair

grounded V/W wire.

Connect Breakout Box to connector [78B]

Check continuity between MAP connector

[80B] Terminal C and Breakout Box

2

terminal 14. Then measure continuity

between MAP connector [80B] Terminal A

YES

Check resistance between

MAP connector [80B]

Terminal C and

Breakout Box terminal 26.

Resistance greater than

1 megohm?

YES

NO.

Less

than 4.5V.

leaving ECM disconnected.

and Breakout Box terminal 26.

Resistance less than 1 ohm?

NO

Repair

open wire.

NO

Clear codes using speedometer self diagnostics.

See 5.6 SPEEDOMETER SELF DIAGNOSTICS. Conﬁrm proper operation with no check engine

lamp.

5-72 2004 Touring: Engine Management (EFI)

Replace ECM.

Reprogram and learn

password.

At some point in the ﬂow chart you may be instructed to jump directly to a the box with the bold asterisk. Disregard the asterisk (but not the instruction box) if your normal progression through the chart brings you to this location.

Locate and repair

short between

R/W and BK/W

wires.

HOME

DTC P0112, P0113 5.20

GENERAL

IAT Sensor

The ECM supplies and monitors a voltage signal (terminal 7) to one side of the intake air temperature sensor (IAT sensor). The other side of the IAT sensor is connected to a common sensor ground, which is also connected to the ECM (terminal

26). The IAT sensor is a thermistor device, meaning that at a spe-

ciﬁc temperature, it will have a speciﬁc resistance across its terminals. As this resistance varies, so does the voltage on (terminal 7).

At high temperatures, the resistance of the sensor is very

●

low, which effectively lowers the signal voltage on terminal 7.

●

At low temperatures, the resistance is very high, allowing the voltage to rise close to 5 volts.

The ECM monitors this voltage to compensate for various operating conditions.

Table 5-28. Code Description

DTC

P0112 IAT sensor voltage low P0113 IAT sensor open/high

DESCRIPTION

DIAGNOSTICS

Diagnostic Tips

An intermittent may be caused by a poor connection, rubbed through wire insulation or a wire broken inside the insulation.

Check the following conditions:

●

Poor connection:

[78] for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal-to-wire connection and damaged harness.

●

Perform

connections and harness check out OK, use a DVOM to check the intake air temperature sensor voltage reading while moving related connectors and wiring harness. If the failure is induced, the intake air temperature sensor voltage reading will change.

Shifted sensor:

●

used to test the intake air temperature sensor at various temperature levels in order to evaluate the possibility of a shifted (out-of-calibration) sensor which may result in driveability problems.

All voltage and resistance values are approximate (±20%). Measure IAT sensor resistance between ECM Terminal 7 and system ground (ECM Terminal 26).

5.8 WIGGLE TEST

Inspect ECM and harness connector

to locate intermittents:

Refer to Tab le 5-29. This table may be

NOTE

If

Table 5-29. IAT Sensor Table

TEMP °C

-20 29121 4.9 -4

-10 16599 4.8 14 09750 4.6 32

10 5970 4.3 50 20 3747 4.0 68 25 3000 3.8 77 30 2417 3.6 86 40 1598 3.1 104 50 1080 2.6 122 60 746 2.2 140 70 526 1.7 158 80 377 1.4 176 90 275 1.1 194

100 204 0.9 212

RESISTANCE VOLTAGE TEMP °F

Diagnostic Notes

The reference numbers below correlate with the circled numbers on the Test 5.20 ﬂow charts.

1. Connect BREAKOUT BOX (Part No. HD-43876) to EFI wire harness

BREAKOUT BOX: EFI.

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

41404), gray pin probes and patch cords.

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

41404), gray socket probes and patch cords.

4. Replace IAT sensor. See Touring Service Manual.

only

(leave ECM disconnected). See 5.7

2004 Touring: Engine Management (EFI) 5-73

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f1743r9s

[89A]

IAT

Sensor

A

B

[78B] [78A]

[89B]

A

Lt GN/Y

B

BK/W

To TP, ET &

MAP Sensors

Lt GN/Y

7 26

ECM

BK/W

Figure 5-47. IAT Sensor Circuit

Table 5-30. Wire Harness Connectors in Figure 5-47.

NO. DESCRIPTION TYPE LOCATION

[78] ECM 36-Place Packard Under Right Side Cover [89] IAT Sensor 2-Place Packard Below Fuel Tank (Right Side)

5-74 2004 Touring: Engine Management (EFI)

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Test 5.20 (Part 1 of 2)

IAT SENSOR: DTC P0112, P0113

Connect Breakout Box to connector [78B] leaving

ECM disconnected. With engine at room temperature

(60-90° F or 16-32° C), use a DVOM to measure

1

resistance across terminals 7 and 26 on Breakout

Box. If engine is warm, refer to Tab le 5-29.

Resistance between 2.0k ohms and 5.0k ohms at

room temperature?

YES

Connect ECM to Breakout Box.

Perform 5.8 WIGGLE TEST to check for

intermittents. Intermittents present?

YES

While wiggling harness, perform

steps marked by BOLD ASTER-

ISKS under Test 5.20 (Part 2 of 2).

Repair as necessary.

YES

Replace IAT sensor, clear codes and road test. Did check engine lamp illu-

minate and set DTC P0112 or

P0113?

NO

Disconnect IAT sensor connector [89].

Tu rn ignition ON. Using a DVOM, mea-

between ECM terminal 7 (positive) and

terminal 26 (negative) on Breakout Box.

1

disconnect ECM from breakout box.

Breakout Box terminal 7 and terminals

sure the voltage

Voltage approximately 5 volts?

NO.

Less than

4.7 volts.

With IAT sensor disconnected,

Measure resistance between

Resistance less than 1 megohm?

10 or 28.

NO

STOP

Go to Test 5.20 (Part 2 of 2).

NO.

Greater than

5.3 volts.

Unplug ECM leaving Breakout Box con-

1

nected at vehicle harness. Measure voltage between

Breakout Box terminal 7 and terminals 10

or 28.

Voltage 0 volts?

YES

Install original IAT

sensor, replace ECM,

perform password

learning and road test.

Clear codes using speedometer self diagnostics. See 5.6 SPEEDOMETER SELF DIAGNOSTICS. Conﬁrm proper operation with no check engine

lamp.

NO

System

OK.

YES

Repair short to

ground on

Lt GN/Y wire.

NO

Replace ECM. Reprogram and learn password.

2004 Touring: Engine Management (EFI) 5-75

YES

Replace ECM. Reprogram and learn password.

At some point in the ﬂow chart you may be instructed to jump directly to a the box with the bold asterisk. Disregard the asterisk (but not the instruction box) if your normal progression through the chart brings you to this location.

Examine IAT sig-

nal wire (Lt GN/Y)

for short to volt-

age and repair.

NO

HOME

Test 5.20 (Part 2 of 2)

IAT SENSOR: DTC P0112, P0113

Continued from

Test 5.20 (Part 1 of 2).

Disconnect IAT sensor connector [89B] and

examine for damage. Connector OK?

YES

Using a DVOM, measure the resistance

between IAT sensor connector [89B]

Terminal A and ECM terminal 7 on Breakout

2

Box. Resistance less than 1.0 ohm?

YES

Using a DVOM, measure the resistance

between IAT sensor connector [89B]

Terminal B and ECM terminal 26 on Break-

out Box. Resistance less than 1.0 ohm?

YES

Using a DVOM, measure the resistance

between ECM terminal 7 and terminal 26 on

Breakout Box. Resistance greater

than 1.0 megohm?

YES

NO

Examine Lt GN/Y wire in

harness for open circuit

and repair.

NO

Examine BK/W wire in

harness for open circuit

and repair.

NO

Repair

connector.

Using a DVOM, measure the resistance

between ECM terminal 7 on Breakout Box

and ground. Resistance greater

than 1.0 megohm?

YES

Remove IAT sensor and measure resistance

across the terminals of the IAT sensor

3

directly. Again, with sensor at room tempera-

ture 60-90° F or 16-32° C), is resistance

between 2.0k ohms and 5.0k ohms?

YES

Perform 5.8 WIGGLE TEST on steps

marked with a BOLD ASTERISK above to

locate intermittents. Repair as necessary.

5-76 2004 Touring: Engine Management (EFI)

Examine Lt GN/Y and

BK/W wires in harness

for short between these

two circuits and repair.

NO

Examine harness for

short to ground and

repair.

NO

Replace

4

IAT sensor.

At some point in the ﬂow chart you may be instructed to jump directly to a the box with the bold asterisk. Disregard the asterisk (but not the instruction box) if your normal progression through the chart brings you to this location.

Clear codes using speedometer self diagnostics.

See 5.6 SPEEDOMETER SELF DIAGNOSTICS. Conﬁrm proper operation with no check engine

lamp.

HOME

DTC P0117, P0118 5.21

GENERAL

ET Sensor

The ECM supplies and monitors a voltage signal (terminal 6) to one side of the engine temperature sensor (ET sensor). The other side of the ET sensor is connected to a common sensor ground (terminal 26) of the ECM.

The ET sensor is a thermistor device, which means that at a speciﬁc temperature it will have a speciﬁc resistance across its terminals. As this resistance varies, so does the voltage (terminal 6).

At high temperatures, the resistance of the sensor is very

●

low, which effectively lowers the signal voltage on terminal 6.

●

At low temperatures, the resistance is very high, allowing the voltage to rise close to 5 volts.

The ECM monitors this voltage to compensate for various operating conditions. The ECM also uses the sensor input as a reference for determining IAC pintle position.

Table 5-31. Code Description

DTC

P0117 ET sensor voltage low P0118 ET sensor open/high

DESCRIPTION

DIAGNOSTICS

Diagnostic Tips

Once the engine is started, the ET voltage should rise

●

steadily.

●

An intermittent may be caused by a poor connection, rubbed through wire insulation or a wire broken inside the insulation.

Check the following conditions:

Poor connection:

●

[78] for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal-to-wire connection and damaged harness.

Perform

●

connections and harness check out OK, use a DVOM to check the engine temperature sensor voltage reading while moving related connectors and wiring harness. If the failure is induced, the engine temperature sensor voltage reading will change.

Shifted sensor:

●

used to test the engine temperature sensor at various temperature levels in order to evaluate the possibility of a shifted (out-of-calibration) sensor which may result in driveability problems.

5.8 WIGGLE TEST

Inspect ECM and harness connector

to locate intermittents:

Refer to Tab le 5-32. This table may be

If

Table 5-32. ET Sensor Table

TEMP °C

-20 28144 4.4 -4

-10 15873 4.0 14 09255 3.5 32

10 5571 3.0 50 20 3457 2.4 68 25 2750 2.1 77 30 2205 1.8 86 40 1442 1.3 or 4.1 50 965 1.0 or 3.7 60 661 3.3 140 70 462 2.9 158 80 329 2.5 176 90 238 2.1 194

100 175 1.7 212

*

Between 40-50°C the ECM changes scaling. Voltages for ECT sensor will shift scales in that range. This provides proper sensor resolution for all temperatures.

RESISTANCE VOLTAGE TEMP °F

* *

104 122

NOTE

All voltage and resistance values are approximate (±20%). Measure ET sensor resistance between ECM Terminal 6 and system ground (ECM Terminal 26).

Diagnostic Notes

The reference numbers below correlate with the circled numbers on the Test 5.21 ﬂow charts.

1. Connect BREAKOUT BOX (Part No. HD-43876) to EFI wire harness

BREAKOUT BOX: EFI.

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

41404), gray pin probes and patch cords.

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

41404), gray socket probes and patch cords.

4. Replace ET sensor. See Touring Service Manual.

only

(leave ECM disconnected). See 5.7

2004 Touring: Engine Management (EFI) 5-77

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f1743s9s

ET

Sensor

[90A]

[90B]

AB

A

B

PK/Y

BK/W

PK/Y

To TP, IAT &

MAP Sensors

BK/W

[78B] [78A]

ECM

6 26

Figure 5-48. ET Sensor Circuit

Table 5-33. Wire Harness Connectors in Figure 5-48.

NO.

[78] ECM 36-Place Packard Under Right Side Cover [90] ET Sensor 2-Place Packard Back of Front Cylinder (Left Side)

5-78 2004 Touring: Engine Management (EFI)

DESCRIPTION TYPE LOCATION

HOME

Test 5.21 (Part 1 of 2)

ET SENSOR: DTC P0117, P0118

Connect Breakout Box to connector [78B]

leaving ECM disconnected. With engine at

room temperature (60-90° F or 16-32° C),

1

use a DVOM to measure resistance across

terminals 6 and 26 on Breakout Box. If engine is warm, refer to Table 5-32. Resistance between 2.0k ohms and 5.0k ohms?

YES

Connect ECM to Breakout Box.

Perform 5.8 WIGGLE TEST to check for

intermittents. Intermittents present?

YES

While wiggling harness, perform

steps marked by BOLD ASTER-

ISKS under Test 5.21 (Part 2 of 2).

Repair as necessary.

YES

Replace ET sensor, clear codes and

road test. Did check engine lamp illu-

minate and set DTC P0117 or

P0118?

NO

Disconnect ET sensor connector [90].

Turn ignition ON. Using a DVOM, mea-

sure the voltage between

terminal 6 (positive) and

terminal 26 (negative) on Breakout Box.

Voltage approximately 5 volts?

NO.

Less than

4.7 volts.

With ET sensor disconnected,

disconnect ECM connector [78B].

Measure resistance between

terminal 6 and terminals 10 or 28.

Resistance less than 1 megohm?

NO

STOP

Go to Test 5.21 (Part 2 of 2).

NO.

Greater than

5.3 volts.

Unplug ECM leaving Breakout Box

connected at vehicle harness.

Measure voltage between

terminal 6 and terminals 10 or 28.

Voltage 0 volts?

YES

Install original

ET sensor,

replace ECM, perform

password learning

and road test.

Clear codes using speedometer self diagnostics.

See 5.6 SPEEDOMETER SELF DIAGNOSTICS. Conﬁrm proper operation with no check engine

lamp.

NO

System

OK.

YES

Repair short to

ground on

PK/Y wire.

NO

Replace ECM. Reprogram and learn password.

At some point in the ﬂow chart you may be instructed to jump directly to a the box with the bold asterisk. Disregard the asterisk (but not the instruction box) if your normal progression through the chart brings you to this location.

2004 Touring: Engine Management (EFI) 5-79

YES

Replace ECM. Reprogram and learn password.

NO

Examine ET sig-

nal wire (PK/Y) for

short to voltage

and repair.

HOME

Test 5.21 (Part 2 of 2)

ET SENSOR: DTC P0117, P0118

Continued from

Test 5.21 (Part 1 of 2).

Disconnect ET sensor connector [90B] and

examine for damage. Connector OK?

YES

Using a DVOM, measure the resistance

between ET sensor connector [90B]

Terminal A and ECM terminal 6 on Breakout

2

Box. Resistance less than 1.0 ohm?

YES

Using a DVOM, measure the resistance

between ET sensor connector [90B]

Terminal B and ECM terminal 26 on Break-

out Box. Resistance less than 1.0 ohm?

YES

Using a DVOM, measure the resistance

between ECM terminal 6 and terminal 26 on

Breakout Box. Resistance greater

than 1.0 megohm?

YES

NO

Examine PK/Y wire in

harness for open circuit

and repair.

NO

Examine BK/W wire in

harness for open circuit

and repair.

NO

Repair

connector.

Using a DVOM, measure the resistance

between ECM terminal 6 on Breakout Box

and ground. Resistance greater

than 1.0 megohm?

YES

Remove ET sensor and measure resistance

3

across the terminals of the ET sensor

directly. Again, with sensor at room tempera-

ture (60-90° F or 16-32° C), is resistance

between 2.0k ohms and 5.0k ohms?

YES

Perform 5.8 WIGGLE TEST on steps

marked with a BOLD ASTERISK above to

locate intermittents. Repair as necessary.

5-80 2004 Touring: Engine Management (EFI)

Examine PK/Y and

BK/W wires in harness

for short between these

two circuits and repair.

NO

Examine harness for

short to ground and

repair.

NO

Replace

4

ET sensor.

At some point in the ﬂow chart

you may be instructed to jump directly to a the box with the bold asterisk. Disregard the asterisk (but not the instruction box) if your normal progression through the chart brings you to this location.

Clear codes using speedometer self diagnostics.

See 5.6 SPEEDOMETER SELF DIAGNOSTICS. Conﬁrm proper operation with no check engine

lamp.

HOME

DTC P0122, P0123 5.22

GENERAL

TP Sensor

The ECM supplies a 5 volt signal (terminal 14) to the throttle position sensor (TP sensor). The TP sensor sends a signal back to the ECM (terminal 24). The returned signal varies in voltage according to throttle position.

At idle (closed throttle), the signal is typically in the range

●

of 0.20-0.80 volts.

●

At wide open throttle, the signal is normally 4.0-4.9 volts.

A code P0122 or P0123 will set if the TP sensor voltage signal does not fall within the acceptable range.

Check TP sensor voltage reading with DVOM. If TP sen-

●

sor is equal to or greater than 3.8 volts then the system is in “clear ﬂood” mode and engine will not start. While spark is present, fuel is shut off. Problem can be mechanical, such as stuck throttle cables.

Table 5-34. Code Description

DTC

P0122 TP sensor open/low P0123 TP sensor high

DESCRIPTION

DIAGNOSTICS

Check for the following conditions:

Poor Connection:

●

[78B] for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal-to-wire connection and damaged harness.

●

Perform

connections and harness check out OK, monitor TP sensor voltage using a DVOM while moving related connectors and wiring harness. If the failure is induced, the TP sensor voltage reading will change.

●

TP sensor scaling:

play while opening the throttle with engine stopped and ignition key ON. Display should vary from closed throttle TP sensor voltage (when throttle is closed) to greater than 4.0 volts (when throttle is held wide open). As the throttle is gradually without spikes or low voltages being observed.

5.8 WIGGLE TEST

Inspect ECM and harness connector

to locate intermittents:

Observe the TP sensor voltage dis-

slowly

moved, the voltage should change

If

Diagnostic Notes

The reference numbers below correlate with the circled numbers on the Test 5.22 ﬂow charts.

1. Connect a BREAKOUT BOX (Part No. HD-43876) between EFI wire harness and ECM before measuring voltage. See 5.7 BREAKOUT BOX: EFI. If using a DVOM to measure voltage, take reading across terminal 24 (positive lead) and terminal 26 (negative lead) on Breakout Box.

2. Replace TP sensor. See Touring Service Manual.

Diagnostic Tips

The DVOM reads throttle position in volts. Voltage should increase at a steady rate as the throttle is moved from idle to wide open. A short to ground or open on the GY/V or R/W wires also will result in a DTC P0122. A short to ground or open on the R/W wire (+5v REF) sets multiple codes as described below.

NOTE

The MAP, TP and VSS sensors are connected to the same reference line (+5V Vref). If the reference line goes to ground or open, multiple codes will be set (DTC P0107, P0108, P0122, P0123, P0501, P0502). Start with the trouble code having the lowest ranking value.

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

41404), gray pin probes and patch cords.

2004 Touring: Engine Management (EFI) 5-81

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s0452x9x

TP

sensor

[88A]

[88B]

ABC

A

BC

R/W

BK/W

To MAP

sensor

GY/V

R/W

To MAP, ET &

IAT sensors

GY/V

BK/W

[78B] [78A]

14 24 26

ECM

Figure 5-49. TP Sensor Circuit

Table 5-35. Wire Harness Connectors in Figure 5-49.

NO. DESCRIPTION TYPE LOCATION

[78] ECM 36-Place Packard Under Right Side Cover [88] TP Sensor 3-Place Packard Below Fuel Tank (Right Side)

5-82 2004 Touring: Engine Management (EFI)

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Test 5.22 (Part 1 of 2)

TP SENSOR: DTC P0122, P0123

With ignition key ON, measure TP sensor voltage while gradu-

ally opening throttle. Does voltage increase steadily

with no spikes or low voltages from 0.2-0.8 volts at idle

1

(closed throttle) to 4.0-4.9 volts at wide open throttle?

Check engine lamp ON

continuously and

DTC P0122 or P0123

the only one set?

YES

Replace ECM. Reprogram and learn password.

YES NO

While wiggling harness,

start with the first step of

Test 5.22 (Part 2 of 2)

(marked by BOLD ASTER-

ISK). Repair as necessary.

YES

NO

Perform 5.8 WIGGLE TEST

to check for intermittents.

Intermittents present?

Replace TP sensor, clear

2

codes and road test. Did check engine lamp illuminate and set DTC

P0122 or P0123?

Voltage is

greater than

4.95 volts.

STOP

Go to Test 5.22 (Part 2 of 2).

2

YES

Replace

TP sensor.

NO

Low voltage

observed.

Unplug TP sensor connector [88B]

and measure voltage between

Terminal B (+) and Terminal A (-)

with ignition ON.

Is reading 4.8-5.0 volts?

YES

Disconnect ECM from

Breakout Box. Check

resistance between ECM

terminal 24 on Breakout

Box to chassis ground.

Greater than 1 megohm?

NO

Find short to

ground on GY/V

signal wire.

or spikes

NO

Measure

resistance

between

TP sensor

connector [88B]

Terminal B to ECM terminal 14 on Breakout Box.

Less than

1.0 ohm?

YES

Install original

TP sensor, replace ECM

(reprogram and learn

password) and road test.

Clear codes using speedometer self diagnostics.

See 5.6 SPEEDOMETER SELF DIAGNOSTICS. Conﬁrm proper operation with no check engine

lamp.

NO

System

OK.

YES

Repair open

in BK/W wire.

At some point in the ﬂow chart you may be instructed to jump directly to a the box with the bold asterisk. Disregard the asterisk (but not the instruction box) if your normal progression through the chart brings you to this location.

NO

Repair open in R/W wire.

2004 Touring: Engine Management (EFI) 5-83

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Test 5.22 (Part 2 of 2)

TP SENSOR: DTC P0122, P0123

YES NO

Continued from Test 5.22 (Part 1 of 2).

With ignition key OFF, disconnect ECM connector [78B]. Turn

ignition key ON. Voltage greater than 0 volts across terminal 24

and terminal 26 on Breakout Box?

Repair short

between GY/V signal

wire and 12 volts.

Clear codes using speedometer self diagnostics. See 5.6 SPEEDOMETER SELF DIAGNOSTICS. Conﬁrm proper operation with no check engine

lamp.

YES

Repair short

between R/W and

GY/V signal wire.

ECM terminal 24 on Breakout Box and

TP sensor connector [88B] Terminal C.

3

YES

Measure resistance from TP

sensor connector [88B]

Terminal C to Terminal B.

Less than 1.0 megohm?

3

NO

Replace

TP sensor.

2

At some point in the ﬂow chart you may be instructed to jump directly to a the box with the bold asterisk. Disregard the asterisk (but not the instruction box) if your normal progression through the chart brings you to this location.

Measure resistance between

Less than 0.5 ohm?

NO

Repair open

GY/V

signal wire.

5-84 2004 Touring: Engine Management (EFI)