Mitsubishi 380. Manual — part 584

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-428

DTC P0630: Vehicle Identification Number (VIN) Malfunction

.

TECHNICAL DESCRIPTION

• The Vehicle Identification Number (VIN) is stored

in the ENGINE-ECU by the vehicle manufacturer.

.

DTC SET CONDITIONS

Check Conditions

• Ignition switch is in "ON" position.

• EPPROM is normal.

Judgement Criteria

• VIN (current) has not been written.

• No MIL

• Engine will not start.

.

EOBD DRIVE CYCLE PATTERN

None.

.

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

• Incorrect VIN in ENGINE-ECU.

• ENGINE-ECU programmed VIN does not match

ETACS VIN.

• Refer to component locations GROUP-

70

• Refer to configuration diagrams GROUP-

80

• Refer to circuit diagrams GROUP-

90

DIAGNOSIS

Required Special Tools:

• : Diagnostic tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A

STEP 1. Using diagnostic tool , check VIN Information.

CAUTION

To prevent damage to diagnostic tool , always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting diagnostic tool .
(1) Connect diagnostic tool to the data link connector.
(2) Set diagnostic tool to the coding mode for VIN Information.
(3) Turn the ignition switch to the "LOCK" (OFF) position.

Q: Has VIN (current) been written?

YES : Go to Step 2.
NO : Write VIN. Then go to Step 2.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-429

STEP 2. Using diagnostic tool , read the diagnostic trouble
code (DTC)
(1) Turn the ignition switch to the "ON" position.
(2) Check the diagnostic trouble code (DTC).

Q: Is DTC P0630 set?

YES : Replace the ENGINE-ECU.
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.00-14

.

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-430

DTC P0638: Throttle Actuator Control Motor Circuit Range/Performance Problem

.

THROTTLE ACTUATOR CONTROL
MOTOR CIRCUIT
RANGE/PERFORMANCE PROBLEM
CIRCUIT

• Refer to DTC P2101 − Throttle Actuator Control

Motor Circuit

P.13A-461

.

.

CIRCUIT OPERATION

• Refer to DTC P2101 − Throttle Actuator Control

Motor Circuit

P.13A-461

.

.

TECHNICAL DESCRIPTION

• ENGINE-ECU checks the electronic controlled

throttle system for abnormal conditions.

.

DTC SET CONDITIONS <Throttle Body: Error at spring check>

Check Conditions

• Vehicle speed is 0 km/h.

• Engine speed is below 300 r/min.

• Engine coolant temperature is above 5.3

degreeC.

• Intake air temperature is above 5.3 degreeC.

• Battery voltage is above 6.5 volts.

Judgement Criteria

• Throttle angle is 12% more than adapted limp

home for 0.14s.
or

• Throttle angle is 3% lower than adapted limp

home for 0.56s.

.

DTC SET CONDITIONS <Throttle Body: Error at Emergency Air Position Test>

Check Conditions

• Vehicle speed is 0 km/h.

• Engine speed is below 300 r/min.

• Engine coolant temperature is between 5.3 and

105 degreeC.

• Intake air temperature is between 5.3 and 143.3

degreeC.

• Battery voltage is higher than 10 volts.

• Time with ignition on (engine off) is more than

1310.7 seconds.

Judgement Criteria

• Throttle angle at limp-home air position is below

1.0697% or above 13.0785%.

.

DTC SET CONDITIONS <Throttle Body: Error at UMA-Learning>

Check Conditions

• Vehicle speed is 0 km/h.

• Engine speed is below 300 r/min.

• Engine coolant temperature is between 5.3 and

105 degreeC.

• Intake air temperature is between 5.3 and 143.3

degreeC.

• Battery voltage is above 10 volts.

• Time with ignition on (engine off) is more than

1310.7 seconds.

• Gas pedal angle is below 14.9%.

Judgement Criteria

• Voltage sensor 1 at lower throttle stop is above

0.89111377 volt.

• Stationary portion is below 0.212402 volt.

• or

• Voltage sensor 2 at lower throttle stop is above

4.841309 volts.
Stationary portion is below 4.11621123 volts.

.

MULTIPORT FUEL INJECTION (MPI) DIAG

MULTIPORT FUEL INJECTION (MPI)

13A-431

DTC SET CONDITIONS <Throttle Body: Adaption caused by Ambient Conditions>

Check Conditions

• Vehicle speed is above 0km/h.

• Engine speed is above 300 r/min.

• Engine coolant temperature is below 5.3 degreeC

or above 105 degreeC.

• Intake air temperature is below 5.3 degreeC or

above 143,3 degreeC.

• Battery voltage is below 10 volts.

• Throttle valve currentless.

Judgement Criteria

• None.

.

DTC SET CONDITIONS <Throttle Body: Error at UMA-Relearning>

Check Conditions

• Vehicle speed is 0 km/h.

• Engine speed is below 300 r/min.

• Engine coolant temperature is between 5.3 and

105 degreeC.

• Intake air temperature is between 5.3 and 143.3

degreeC.

• Battery voltage is above 10V.

• Time with ignition on (engine off) is more than

1310.7 seconds.

• Gas pedal angle is below 14.9%.

Judgement Criteria

• Voltage sensor 1 at lower throttle stop is above

0.89111377 volt.

• Stationary portion is below 0.212402 volt.

• or

• Voltage sensor 2 at lower throttle stop is above

4.841309 volts.
Stationary portion is below 4.11621123 volts.

.

DTC SET CONDITIONS <Throttle Body: Error at Amplifier Adjustment>

Check Conditions

• Vehicle speed is 0 km/h.

• Engine speed is below 300 r/min.

• Engine coolant temperature is between 5.3 and

105 degreeC.

• Intake air temperature is between 5.3 and 143.3

degreeC.

• Battery voltage is above 10 volts.

• Time with ignition on (engine off) is more than

1310.7 seconds.

• Gas pedal angle is below 14.9%.

Judgement Criteria

• Amplifier value is above 4.324219 volts or below

3.996064 volts.

• Offset limit for amplifier value is above 0.054932

volt or below -0.054932 volt.

.

EOBD DRIVE CYCLE PATTERN

None.

.

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

• Throttle valve return spring failed.

• Throttle valve operation failed.

• Throttle actuator control motor failed.

• Harness damage in throttle actuator control

motor circuit, or connector damage.

• Refer to component locations GROUP-

70

• Refer to configuration diagrams GROUP-

80

• Refer to circuit diagrams GROUP-

90

DIAGNOSIS

Required Special Tools:

• : Diagnostic tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991910: Main Harness A