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Mitsubishi Eclipse. Manual - part 140

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-53

DTC P0106: Manifold Absolute Pressure Circuit Range/Performance Problem

AK301717

1 2 3

Y BL

GREEN-

YELL

ACK

ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>

MANIFOLD
ABSOLUTE
PRESSURE
(MAP) SENSOR

B-04
(MU802723)

C-60 <M/T>
(MU803772)

C-54 <A/T>
(MU803781)

C-57 <A/T>
(MU803782)

73 <M/T>
91 <A/T>*2

81 <M/T>
46 <A/T>*1

92 <M/T>
57 <A/T>*1

NOTE
*1:PCM connector C-54 <A/T>
*2:PCM connector C-57 <A/T>

89 90 91 92

83 84

88 89

76 77

72
79
91

73
80

81
92

8283
93

8485

8687

9596

42 43
48 49 50 51 52 53 54 55 56 57

58 59

60 61 62 63

64 65 66

Manifold Absolute Pressure Sensor Circuit

AK300106AB

CONNECTOR: B-04

B-04 (B)

MANIFOLD
ABSOLUTE
PRESSURE
SENSOR

AK300060

ECM

CONNECTOR: C-60 <M/T>

C-60 (G)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-54

CIRCUIT OPERATION

• A 5-volt voltage is supplied to the manifold abso-

lute pressure sensor power terminal (terminal No.
3) from the ECM (terminal No. 81) <M/T> or PCM
(terminal No. 46) <A/T>. The ground terminal
(terminal No. 2) is grounded with the ECM (termi-
nal No. 92) <M/T> or PCM (terminal No. 57)
<A/T>.

• A voltage that is proportional to the intake mani-

fold pressure is sent to the ECM (terminal No. 73)
<M/T> or PCM (terminal No. 91) <A/T> from the
manifold absolute pressure sensor output termi-
nal (terminal No. 1).

TECHNICAL DESCRIPTION

• The manifold absolute pressure sensor outputs a

voltage which corresponds to the intake manifold
pressure.

• The ECM <M/T> PCM <A/T> checks whether this

voltage is within a specified range.

DESCRIPTIONS OF MONITOR METHODS
Compare load value with manifold absolute pressure

sensor output voltage.

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)

• Engine coolant temperature sensor

• Throttle position sensor

AK300060

PCM

CONNECTORS: C-54, C-57 <A/T>

C-57 (GR)

C-54 (GR)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-55

DTC SET CONDITIONS <Range/Performance problem-high input>

Logic Flow Chart

Check Conditions

• 8 minutes or more have passed since the starting

sequence was completed, when the engine cool-
ant temperature at engine start is 0

°C (32°F) or

lower.

• Engine speed is lower than 1,500 r/min.

• Throttle position sensor output voltage is lower

than 0.9 volt.

Judgement Criteria

• Manifold Absolute pressure is 89 kPa (26.3

in.Hg) or higher for 2 seconds.

START

YES

MONITORING

CONDITIONS

PRESSURE > 89kPa (26.3in.Hg)

CONTINUOUS

FAILURE FOR 2secs

MALFUNCTION

END

GOOD

THROTTLE POSITION < =0.9V

AK301414

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-56

DTC SET CONDITIONS <Range/Performance problem-low input>

Logic Flow Chart

Check Conditions

• 8 minutes or more have passed since the starting

sequence was completed, when the engine cool-
ant temperature at engine start is 0

°C (32°F) or

lower.

• Engine speed is higher than 1,500 r/min.

• Throttle position sensor output voltage is higher

than 3.5 volts.

Judgement Criteria

• Manifold Absolute pressure is 45 kPa (8.3 in.Hg)

or lower for 2 seconds.

OBD-ll DRIVE CYCLE PATTERN
Refer to Diagnostic Function

− OBD-ll Drive Cycle −

Procedure 6

− Other Monitor

P.13A-5

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

• Manifold absolute pressure sensor failed.

• Harness damage or connector damage.

• ECM failed <M/T>.

• PCM failed <A/T>.

START

YES

MONITORING

CONDITIONS

PRESSURE <

45kPa (8.3in.Hg)

CONTINUOUS

FAILURE FOR 2secs

MALFUNCTION

END

GOOD

THROTTLE POSITION > =3.5V

AK301415

Content .. 138 139 140 141 ..