MPI <4G9> -
Troubleshooting
13A-120
Code No. P0500 Vehicle speed sensor system
Probable cause
Range of Check
D
Engine: Two seconds after the engine was started
D
Idle switch: OFF
D
Engine speed: 2,500 r/min or more
D
During high engine load
Set Conditions
D
The sensor output voltage does not change for 4 seconds (no pulse signal
input).
D
Malfunction of the vehicle speed sensor
D
Open or short circuit in the vehicle speed sensor
circuit or loose connector contact
D
Malfunction of engine-ECU <M/T>
D
Malfunction of engine-A/T-ECU <A/T>
NG
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
OK
Check the trouble symptoms.
OK
Check the following connector:
A-60
NG
Repair
NG
Repair
OK
Check the harness wire between the engine-ECU <M/T> or
engine-A/T-ECU <A/T>, and repair if necessary.
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 <M/T> or
engine-A/T-ECU <A/T> connector B-34 <M/T>, B-93 <A/T>.
D
Driving the vehicle
D
The voltage between terminal 86 <M/T>, 80 <A/T> and
earth
OK:
A normal waveform should be displayed as described
in OSCILLOSCOPE INSPECTION PROCEDURE,
and noise should not be displayed in the waveform.
(Refer to GROUP 23 - Troubleshooting.)
NG
Check the following connectors:
A-60, B-34 <M/T>, B-93 <A/T>
Does the speedometer operate normally?
Code No. P0505 Idle speed control (ISC) system
Probable cause
Check Area
D
Vehicle speed has reached 1.5 km/h at least once.
D
Under the closed loop idle speed control.
Judgment Criteria
D
Actual idle speed has continued to be higher than the target idle speed by
300 r/min or more for 10 sec.
Check Area
D
Vehicle speed has reached 1.5 km/h at least once.
D
During idle speed closed loop control.
D
The highest temperature at the last drive is 45
_
C or less.
D
Engine coolant temperature is approx. 80
_
C or more.
D
Battery voltage is 10 V or more.
D
Intake air temperature is -10
_
C or more.
Judgment Criteria
D
Actual idle speed has been minimum 200 r/min higher than the target idle
speed for ten seconds.
Check Area
D
During idle speed closed loop control.
D
Engine coolant temperature is about 80
_
C or higher.
D
Battery voltage is 10 V or higher.
D
Power steering switch is off.
D
Intake air pip pressure is 53 kPa or less.
D
Intake air temperature is -10
_
C or more.
Judgment Criteria
D
Actual idle speed has been minimum 100 r/min higher than the target idle
speed for ten seconds.
D
Malfunction of idle speed control (ISC) servo
D
Improper connector contact, open circuit or
short-circuit harness wire
D
Malfunction of engine-ECU <M/T>
D
Malfunction of engine-A/T-ECU <A/T>
Содержание Colt 2000
Страница 7: ...11A 1 ENGINE CONTENTS ENGINE 4G1 11A ENGINE 4G9 11B ...
Страница 30: ...NOTES ...
Страница 221: ...23 1 AUTOMATIC TRANSMISSION CONTENTS GENERAL 2 Outline of Changes 2 TROUBLESHOOTING 2 ...