Mitsubishi Galant (2004+). Manual - part 920

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-497

DTC P0222: Throttle Position Sensor (sub) Circuit Low Input

CAUTION

If DTC P0222 has been set, TCL related DTC
U1120 is also set. After P0222 has been diag-
nosed, don't forget to erase DTC U1120.

1 2 3 4 5

100

93 94 95

96 97 98

101 102 103 104

105 106 107 108

109 110 111 112 113

AK303853

YELLO

-RED

WHITE-RED

BLA

CK-WHITE

HALL IC

B-06

5 V

THROTTLE
POSITION
SENSOR
(SUB)

POWERTRAIN CONTROL MODULE (PCM)

Throttle Position Sensor (sub) Circuit

B-22

AK303817AB

CONNECTOR: B-06

B-06 (B)

THROTTLE
ACTUATOR
CONTROL
MOTOR

THROTTLE
POSITION
SENSOR

AK303043

CONNECTOR: B-22

B-22 (B)

PCM

AIR CLEANER

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-498

CIRCUIT OPERATION

• A 5-volt power supply is applied on the throttle

position sensor (sub) power terminal (terminal
No. 5) from the PCM (terminal No. 94).
The ground terminal (terminal No. 3) is grounded
with PCM (terminal No. 95).

TECHNICAL DESCRIPTION

• The throttle position sensor (sub) outputs voltage

which corresponds to the throttle valve opening
angle.

• The PCM checks whether the voltage is within a

specified range.

DESCRIPTIONS OF MONITOR METHODS
Throttle position sensor (sub) output voltage is out of

specified range.

MONITOR EXECUTION
Continuous

MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)

Other Monitor (There is no temporary DTC stored

in memory for the item monitored below)

• Not applicable

Sensor (The sensor below is determined to be

normal)

• Not applicable

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-499

DTC SET CONDITIONS

Logic Flow Chart

Check Conditions

• Ignition switch is "ON" position.

Judgement Criteria

• Throttle position sensor (sub) output voltage

should be 2.25 volts or less for 0.5 second.

OBD-II DRIVE CYCLE PATTERN
None.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)

• Throttle position sensor failed.

• Open or shorted throttle position sensor (sub) cir-

cuit, harness damage, or connector damage.

• PCM failed.

DIAGNOSIS

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

• MB991658: Test Harness

START

YES

CONTINUOUS

FAILURE FOR 0.5sec

MALFUNCTION

END

GOOD

OUTPUT VOLTAGE

< =2.25V

OUTPUT VOLTAGE > =4.8V

AK302032

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-500

STEP 1. Using scan tool MB991958, check data list item 14:
Throttle Position Sensor (sub).

CAUTION

To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK"(OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.

(3) Detach the intake air hose at the throttle body.
(4) Disconnect the connector of the throttle position sensor.
(5) Use test harness special tool (MB991658) to connect only

terminals No. 3, No. 4, No. 5, and No. 6.

(6) Set scan tool MB991958 to the data reading mode for item

14, Throttle Position Sensor (sub).

• Output voltage should be between 2.2 and 2.8 volts

when the throttle valve is fully closed with your finger.

• Output voltage should be 4.0 volts or more when the

throttle valve is fully open with your finger.

(7) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the sensor operating properly?

YES : It can be assumed that this malfunction is intermittent.

Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

P.00-6

NO : Go to Step 2.

STEP 2. Check harness connector B-06 at throttle position
sensor for damage.

Q: Is the harness connector in good condition?

YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness

Connector Inspection

P.00E-2

. Then go to Step 11.

STEP 3. Measure the sensor supply voltage at throttle
position sensor harness side connector B-06.

(1) Disconnect the connector B-06 and measure at the harness

side.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 5 and ground.

• Voltage should be between 4.9 and 5.1 volts.

(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the measured voltage between 4.9 and 5.1 volts?

YES : Go to Step 7.
NO : Go to Step 4.

AK303804AB

MB991910

DATA LINK
CONNECTOR

MB991824

MB991827

AK303818

6 5 4 3 2

CONNECTOR: B-06

B-06 (B)

HARNESS
CONNECTOR:
COMPONENT SIDE

AK303818

6 5 4 3 2

CONNECTOR: B-06

B-06 (B)

HARNESS
CONNECTOR:
COMPONENT SIDE

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