TROUBLESHOOTING
ENGINE COOLING
14-15
STEP 22. Check the cooling fan motor drive
control unit.
(1) Disconnect engine-ECU connector C-123 <M/T>
or engine-A/T-ECU connector C-122 <A/T>.
(2) Pull out connector terminal pin 21 <M/T> or 18
<A/T> to disconnect connector.
(3) Reconnect the connector with connector terminal
pin still removed.
(4) Turn the ignition switch to the "ON" position.
(5) Check for the cooling fan operation.
•
The cooling fan rotates. (with connector
terminal pin 21 <M/T> or 18 <A/T>
disconnected)
•
The cooling fan stops. (When connector
terminal pin 21 <M/T> or 18 <A/T> is
connected to the body earth.)
(6) Turn the ignition switch to the "OFF" position.
(7) Disconnect engine-ECU connector C-123 <M/T>
or engine-A/T-ECU connector C-122 <A/T>, and
push in connector terminal pin 21 <M/T> or 18
<A/T> to disconnect connector.
(8) Reconnect the connector with connector terminal
pin still installed.
Q: Does the cooling fan rotate? And when the
connector terminal pin is connected to the body
earth, does the cooling fan stop?
YES :
Go to Step 23 .
NO :
Replace the cooling fan motor drive control
unit (Refer to
P.14-35
). Then go to Step 24 .
STEP 23. MUT-II/III self-diag code
Check if an MPI system self-diag code is set. (Refer
to GROUP 13A - Trouble shooting
P.13A-9
) <4G1>
or (Refer to GROUP 13B - Trouble shooting
P.13B-9
) <4G6>.
Q: Diagnosis code set?
YES :
Inspection chart for diagnosis code (Refer
to GROUP 13A - Trouble shooting
P.13A-15
) <4G1> or Inspection chart for
diagnosis code (Refer to GROUP 13B -
Trouble shooting
P.13B-15
) <4G6>.
NO :
Replace the engine-ECU <M/T> or
engine-A/T-ECU <A/T> (Refer to GROUP
13A
P.13A-401
). Then go to Step 24 .
STEP 24. Check the symptoms.
Q: Does the cooling fan motor (L.H.) and the cooling
fan motor (R.H.) <4G1 (Vehicles with A/C)> or A/C
condenser fan motor <4G6> operate correctly?
YES :
This symptoms is complete.
NO :
Return to Step 1 .
AC303555AB
Connector: C-123 <M/T>, C-122 <A/T>
C-123 <M/T>
or
C-122 <A/T>
C-123 <M/T>
Engine-ECU <M/T> or
engine-A/T-ECU <A/T>
C-122 <A/T>
AC303559
C-122 connector <A/T>
(Harness side connector: ECU side view)
AB
C-123 connector <M/T>
(Harness side connector: ECU side view)
Summary of Contents for Lancer 2004
Page 22: ...NOTES ...
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Page 139: ...35 1 GROUP 35 SERVICE BRAKES CONTENTS BASIC BRAKE SYSTEM 35A ANTI SKID BRAKING SYSTEM ABS 35B ...
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Page 427: ...21 1 GROUP 21 CLUTCH CONTENTS CLUTCH 21A CLUTCH OVERHAUL 21B ...
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Page 481: ...00 1 GROUP 00 GENERAL CONTENTS GENERAL 00 GENERAL ELECTRICAL 00E ...
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