Mitsubishi Pajero Pinin. Manual - part 76

 

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Mitsubishi Pajero Pinin. Manual - part 76

 

 

GDI  – 

Troubleshooting

13A-53

Code No. P0500 Vehicle speed sensor system

Probable cause

Range of Check



Engine: Two seconds after the engine was started



Idle switch: OFF



Engine speed: 2,500 r/min or more



During high engine load

Set Conditions



The sensor output voltage does not change for 4 seconds (no pulse signal
input).



Malfunction of the vehicle speed sensor



Open or short circuit in the vehicle speed sensor
circuit or loose connector contact



Malfunction of engine-ECU

NO

Check the vehicle speed sensor
(Refer to GROUP 54 – Combination Meter.)

YES

Use an analyzer to measure the output waveform of the
vehicle speed sensor at engine-ECU connector C-19.



Driving the vehicle



The voltage between terminal 80 and earth
OK: A normal waveform should be displayed as de-

scribed in OSCILLOSCOPE INSPECTION PROCE-
DURE, and noise should not be displayed in the
waveform. (Refer to GROUP 23 – Troubleshooting.)

NG

NG

Repair

OK

Check the harness wire between vehicle speed sensor and
the engine-ECU, and repair if necessary.

OK

Check the following connector: C-19

NG

Repair

OK

Check the trouble symptoms.

NG

Replace the engine-ECU.

Does the speedometer operate normally?

Check the following connectors:
B-08, C-19, C-28, C-38 <LHD>, C-41 <RHD>, D-02

Code No. P1200 Injector driver system

Probable cause

Range of Check



Engine speed: 4,000 r/mimn or less



Battery voltage: 10 V or more



The fuel cut operation and the injector operation (by carrying out the
Actuator test) are not in progress.



During high engine load

Set Conditions



Injector open circuit check signal is not output from the injector driver.



Malfunction of the injector driver



Open or short circuit, or loose connector contact



Malfunction of engine-ECU

OK

Use an analyzer to measure the signal waveform at
engine-ECU connectors C-17, C-19.



Engine: Idling



The voltage between terminal 96 and earth, terminal 1
and earth
OK: A normal waveform should be displayed as de-

scribed on P.13A-84* (INSPECTION PROCEDURE
USING AN ANALYZER).

NG

Replace the injector driver.

OK

Check the harness wire between the injector driver and the
engine-ECU

NG

Repair

NG

Replace the engine-ECU.

Check the following connector: C-19

NG

Repair

OK

Check the trouble symptoms.

OK

Intermittent malfunction 
(Refer to GROUP 00 – Points to Note for Intermittent
Malfunctions.)

NOTE
*:

Refer to the ’00 PAJERO PININ Workshop Manual (Pub. No. CKRE00E1)

GDI  – 

Troubleshooting

13A-54

Code No. P1220 Electronic-controlled throttle valve
system

Probable cause

Range of Check



Ignition switch: ON



Error in communication between the engine-ECU and the throttle valve
controller

Set Conditions



Output voltage of throttle position sensor (2nd channel) fluctuates
significantly (approx. 1 V or more) from an expected value, based on that
of the accelerator pedal position sensor (2nd channel).

Range of Check



Ignition switch: ON



Error in communication between the throttle valve controller and the
engine-ECU

Set Conditions



The output voltage of the throttle position sensor (2nd channel) is
significantly different (approx. 1 V) from the throttle valve opening angle
(voltage), which the engine-ECU request the throttle valve controller.



Short in communication line



Malfunction of the engine-ECU



Malfunction of the throttle valve controller

NG

Replace the engine-ECU.

Check the trouble symptoms.

NG

Replace the throttle valve controller.

OK

Check the trouble symptoms.

OK

Check the harness wire between the throttle valve controller
and the engine-ECU.

NG

Repair

Check the following connectors: 
C-19, C-48

NG

Repair

GDI  – 

Troubleshooting

13A-55

Code No. P1221 Throttle valve position feedback system

Probable cause

The throttle valve controller judges a malfunction, and then transmit the result
to the engine-ECU.
Range of Check



Ignition switch: ON



Battery voltage: 10 V or more

Set Conditions



Failure in the motor position feedback
(The engine-ECU detects that the current in the motor is excessive and the
opening angle difference between the target value of throttle position sensor
(1st channel) and the actual value of throttle position sensor (1st channel)
is 1.0 V or more)



Malfunction of throttle position sensor (1st
channel)



Open or short circuit in the throttle position
sensor (1st channel) circuit or loose connector
contact



Malfunction of the throttle valve controller

NO

MUT-

II

 Self-Diag Code

Is Code No. P1224 set?

YES

Refer to Code No. P1224, Throttle valve control servo motor
(motor 1st phase malfunction) system (Refer to P.13A-57.)

NG

Replace the throttle valve controller.

OK

Check the trouble symptoms.

NG

Check the harness wires between the throttle position sensor
and the throttle valve controller, and between the throttle
valve control servo and the throttle valve controller.

NG

Repair

NO

Adjust the throttle position sensor. (Refer to P.13A-92*.)

MUT-

II

 Self-Diag Code

Is code No. P0120 set?

YES

Refer to Code No. P0120, Throttle position sensor (1st
channel) system (Refer to P.13A-22.)

OK

Check the following connectors: A-05, A-06, C-48

NG

Repair

OK

Check the throttle valve control servo. (Refer to P.13A-107*.)

NG

Replace the throttle body assembly.

NO

MUT-

II

 Self-Diag Code

Is Code No. P1228 set?

YES

Refer to Code No. P1228, Throttle valve control servo motor
(motor 2nd phase malfunction) system (Refer to P.13A-60.)

NOTE
*:

Refer to the ’00 PAJERO PININ Workshop Manual (Pub. No. CKRE00E1)

GDI  – 

Troubleshooting

13A-56

Code No. P1223 Communication line system with the
throttle valve controller

Probable cause

Range of Check



Ignition switch: ON



Battery voltage: 8 V or more.



Engine: Not cranking

Set Conditions



System detects an error in communication line between the engine-ECU
and the throttle valve controller, and between the throttle valve controller
and the engine-ECU.



Short in communication line



Malfunction of engine-ECU



Malfunction of throttle valve controller

NG

Replace the throttle valve controller.

OK

OK

Check the harness wire between
the throttle valve controller and the
engine-ECU.

NG

Repair

Check the harness wire between the
throttle valve controller and earth, and
repair if necessary.

YES

Refer to Code No. P1220,
Electronic-controlled throttle valve system
(Refer to P13A-54.)

NO

NG

Repair

OK

Measure at throttle valve controller
connector C-48.



Measure voltage at the throttle
valve controller connector
terminals.



Ignition switch: ON

(1) The voltage between terminal 5

and earth
OK: System voltage

(2) The voltage between terminal 3

and earth
The voltage between terminal 4
and earth 
The voltage between terminal 16
and earth
OK: 0.5 V or less

(1) NG

Check the following connector: 
A-36

NG

Repair

OK

Check the harness wire between the
throttle valve controller and the engine
control relay, and repair if necessary.

NG

Replace the engine-ECU.

(2) NG

OK

Check the following connector:
C-19

NG

Repair

Check the following connector:
C-48

Check the trouble symptoms.

Check the trouble symptoms.

MUT-

II

 Self-Diag Code

Is Code No. P1220 output?

Check the following connector: 
A-36

NG

Repair

OK

 

 

 

 

 

 

 

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