MPI <4G1> -
Troubleshooting
13A-37
Replace the engine-ECU.
NG
OK
Check the trouble symptoms.
OK
Intermittent malfunction (Refer to GROUP 00 - Points to Note
for Intermittent Malfunctions.)
OK
NG
Repair
Check the harness wire between the engine control relay and
the idle speed control servo, and between the idle speed
control servo and the engine-ECU.
OK
NG
Repair
Check the following connectors:
B-13, B-37
NG
Repair
OK
Replace the engine-ECU.
NG
Repair
OK
Check the harness wire between the idle speed control servo
and the engine-ECU.
Measure at engine-ECU connector B-37.
D
Connect the connector using test harness (MB991709),
and measure at pick-up harness.
D
The voltage between terminal 4 and earth
D
The voltage between terminal 5 and earth
D
The voltage between terminal 17 and earth
D
The voltage between terminal 18 and earth
OK:
The voltage changes as follows for three seconds
when the ignition switch is turned ON.
(When using a circuit tester)
5 V and 8 V alternates
(When using an analyzer)
1 V or less and system voltage alternates
NG
Check the following connector:
B-37
OK
OK
Check the harness wire between the engine control relay and
the idle speed control servo, and repair if necessary.
Measure at the idle speed control servo connector A-56.
D
Disconnect the connector, and measure at the harness
side.
D
Ignition switch: ON
D
The voltage between terminal 2 and earth
D
The voltage between terminal 5 and earth
OK:
System voltage
NG
Check the following connector:
B-13
OK
OK
NG
Repair
Check the following connector:
A-56
OK
NG
Replace
Check the idle speed control (ISC) servo.
(Refer to P.13A-88*.)
OK
NG
Clean around the throttle valve. (Refer to P.13A-75*.)
Check the throttle body (around the throttle valve) for
contamination.
NO
NG
Repair
Check intake air hose and intake manifold for air intake.
YES
Refer to P.13A-9, INSPECTION CHART FOR DIAGNOSIS
CODES.
MUT-
II
Self-Diag Code
Is any diagnosis code other than No. P0505 output?
NOTE:
*: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).
Содержание Colt 2000
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