MPI <4G1> -
Troubleshooting
13A-24
Code No. P0141 Oxygen sensor heater (rear) system
<sensor 2>
Probable cause
Range of Check
D
The engine coolant temperature is approx. 20
_
C or more.
D
The oxygen sensor heater (rear) remains on.
D
The engine speed is 50 r/min or more.
D
Battery voltage is 11 - 16 V.
Set Conditions
D
The current, which flows through the oxygen sensor heater (rear), is 0.2 A or
less or 3.5 A or more for six seconds.
D
Malfunction of oxygen sensor heater (rear)
D
Open or short circuit in the oxygen sensor heater
(rear) circuit or loose connector contact
D
Malfunction of engine-ECU
NG
Replace the engine-ECU.
OK
Check the trouble symptoms.
OK
Transient malfunction
(Refer to GROUP 00 - Points to
Note for Intermittent Malfunctions.)
OK
Check the harness wires between
the oxygen sensor (rear) and the
engine-ECU, and between the
oxygen sensor (rear) and the engine
control relay.
NG
Repair
OK
Check the following connector:
B-35
NG
Repair
OK
Check the harness wire between the
oxygen sensor (rear) and the
engine-ECU, and repair if necessary.
Repair
NG
Check the following connector:
B-35
NG
OK
Measure at engine-ECU connector
B-35.
D
Measure the voltage at the
engine-ECU terminal.
D
Ignition switch: ON
D
Voltage between terminal 54 and
earth
OK:
System voltage
OK
Check the harness wires between
the oxygen sensor (rear) and the
engine control relay, and repair if
necessary.
Repair
NG
Check the following connector:
B-13
NG
OK
Measure at oxygen sensor (rear)
connector A-108.
D
Disconnect the connector and
measure at the harness side.
D
Ignition switch: ON
D
Voltage between terminal 1 and
earth
OK:
System voltage
OK
Check the following connector:
A-108
NG
Repair
Measure at oxygen sensor (rear)
connector A-108.
D
Disconnect the connector and
measure at the harness side.
D
Resistance between terminals 1
and 3
OK:
11 - 18
W
NG
Replace
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 ...