Mitsubishi Outlander XL. Manual - part 351

(3)

After the DTC has been deleted, read the DTC again.

(4)

Turn the ignition switch to the "LOCK"(OFF) position.

Q:Is DTC P0638 set?

YES:

 Retry the troubleshooting.

NO:

 The inspection is complete.

DTC P0642: Throttle Position Sensor Power Supply

M11310100248USA0000010000

TECHNICAL DESCRIPTION

｠

ECM  checks  the  throttle  position  sensor  power
voltage for abnormal conditions.

DESCRIPTIONS OF MONITOR METHODS

Throttle  position  sensor  source  voltage  is  smaller
than the specified value.

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

DTC SET CONDITIONS

Check Condition

｠

Battery positive voltage is higher than 6.3 volts.

Judgement Criterion

｠

Throttle  position  sensor  power  voltage  should  be
4.1 volts or less for 0.3 second.

OBD-II DRIVE CYCLE PATTERN

None.

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

｠

ECM failed.

 

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-599

DIAGNOSTIC TROUBLE CODE PROCEDURES

STEP 1. Using scan tool MB991958, read the diagnostic
trouble code (DTC).

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"(OFF)  position  before
connecting 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)

After the DTC has been deleted, read the DTC again.

(4)

Turn the ignition switch to the "LOCK"(OFF) position.

Q:Is DTC P0642 set?

YES:

 Replace the ECM. When the ECM is replaced, register

the ID code. Refer to GROUP 42B, ID Code Registration
Judgment Table <Vehicles with KOS> P.42B-12or GROUP
42C, ID Code Registration Judgment Table <Vehicles with
WCM> P.42C-8.

NO:

 It can be assumed that this malfunction is

intermittent. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points - How to Cope
with Intermittent Malfunctions P.00-15.

13Ab-600

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC P0657: Throttle Actuator Control Motor Relay Circuit Malfunction

M11310100249USA0000010000

1

3

2

4

71 72 73 74 75 76 77 78 79 80 81 82

83 84 85 86 87 88 89 90 91 92 93 94

95 96 97 98 99

100 101 102 103 104

112 113 114

109

108

107

110 111

115 116

106

105

118

117

1

2

3
4

ZK602856

RED

20A

WHITE

WHITE

WHITE

A-33X

MFI
RELAY

THROTTLE ACTUATOR 
CONTROL MOTOR RELAY

4

3

1

2

22

15A

8

TO ECM

OFF

ON

A-21X

B-11

2

4

3

BR

O

WN-WHITE

POWER
SOURCE

SKY BLUE

1

OFF

ON

72

84

ENGINE CONT ROL MODUL E

AA00

THROTTLE ACTUATOR CONTROL MOTOR RELAY CIRCUIT

RELAY BOX
(ENGINE COMPARTMENT)

36

FUSIBLE LINK

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-601

DIAGNOSTIC TROUBLE CODE PROCEDURES

ZK603589

MFI relay

A-33X

Connector: A-33X

AA00

ZK603628

A-21X

Connector: A-21X

AA00

Throttle actuator
control motor relay

ZK603592

ECM

B-11 (GR)

Connector: B-11

AA00

 

CIRCUIT OPERATION

｠

Battery  positive  voltage  is  applied  to  the  throttle
actuator control motor relay terminal (terminal No.
4).

｠

Battery  positive  voltage  is  applied  to  the  throttle
actuator control motor relay terminal (terminal No.
2) from the MFI relay (terminal No. 2).

｠

ECM (terminal No. 84) applies current to the throttle
actuator control motor relay coil by turning ON the
power transistor in the unit in order to turn the relay
ON.

｠

When the throttle actuator control motor relay turns
ON,  battery  positive  voltage  is  supplied  by  the
throttle actuator control motor relay (terminal No. 3)
to the ECM (terminal No. 72).

TECHNICAL DESCRIPTION

｠

When the ignition switch ON signal is input into the
ECM, the ECM turns ON the throttle actuator control
motor relay.

DTC SET CONDITIONS

Check Condition

｠

Battery positive voltage is higher than 8.3 volts.

Judgement Criterion

｠

The power line voltage of the electronic controlled
throttle system should be 6.0 volts or less for 0.35
seconds.

OBD-II DRIVE CYCLE PATTERN

None.

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

｠

Malfunction of throttle actuator control motor relay.

｠

Connector damage.

｠

Harness damage.

｠

ECM failed.

 

DIAGNOSIS

Required Special Tools:

｠

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

13Ab-602

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES