GDI -
Troubleshooting
13I-87
INSPECTION PROCEDURE 22
Clutch switch system malfunction <M/T>
Probable cause
The clutch pedal switch sends a signal indicating clutch pedal depression to the
engine-ECU. The engine-ECU controls the fuel injection properly according to this
signal, thus prevents the fluctuation of the engine speed during shift change.
D
Malfunction of the clutch switch
D
Opencircuitorshort-circuitedharnesswirein the clutch
switch circuit
D
Malfunction of the engine-ECU
OK
NG
Replace the engine-ECU.
NG
OK
Check the trouble symptoms.
OK
Replace the engine-ECU.
Repair
NG
Repair
NG
Repair
(2) NG
OK
Check the following connector:
C-01
Check the following connectors:
C-62 <LHD>, (C-63, C-64) <RHD>
Check the trouble symptoms.
Check the harness wire between the
engine-ECU and the clutch switch con-
nector.
Measure at the clutch switch connector
C-01.
D
Disconnect the connector, and
measure at the harness side.
(1) Voltage between 2 and earth
(Ignition switch: ON)
OK:
System voltage
(2) Continuity between 1 and earth
OK:
Continuity
(1) NG
Check the following connectors:
C-83, C-164
OK
NG
Replace
OK
Check the clutch switch. (Refer to
P.13I-112*.)
NG
Check the trouble symptoms.
Check the harness wire between the
clutch switch connector and the earth,
and repair if necessary.
NG
NG
Repair
NOTE:
*: Refer to the ’99 GALANT Workshop Manual (Pub. No. PWDE9611-A)
INSPECTION PROCEDURE 23
GDI ECO indicator lamp does not illuminate.
Probable cause
If the GDI ECO indicator lamp does not illuminate after turning switch, the causes
listed in the right column are suspected.
D
Burned-out GDI ECO indicator lamp bulb
D
Open circuit or short-circuited harness wire in the GDI
ECO indicator lamp circuit
D
Malfunction of the engine-ECU <M/T>
D
Malfunction
of
the
engine-A/T
-ECU
<A/T>
D
Malfunction of the GDI ECO indicator lamp ECU
Check the relative circuit of GDI ECO indicator lamp. (Refer to
GROUP 54A - Troubleshooting.)
OK
Check the harness wire between the GDI ECO indicator lamp
ECU
and
engine-ECU
<M/T>
or
engine-A/T
-ECU
<A/T>.
NG
NG
Repair
Check trouble symptom.
OK
NG
Repair
NG
Check the following connectors:
C-90, D-15
NG
Replace
the
engine-ECU
<M/T>
or
engine-A/T
-ECU
<A/T>.
OK
Check trouble symptom.
NG
Repair
Measure at the engine-ECU connector C-165 <M/T> or engine-A/T-
ECU
connector
C-177
<A/T>.
D
Disconnect the connector, and measure at the harness side.
D
Earth
terminal
14
<M/T>,
23
<A/T>
(Ignition
switch:
ON)
OK:
The GDI ECO indicator lamp illuminates.
OK
Check the following connectors:
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