Mitsubishi FUEL Manual page 291

INSPECTION PROCEDURE 34
Stop lamp switch system
The engine-ECU <M/T> or engine-A/T-ECU <A/T> determines whether the brake pedal
is depressed or not, by means of the stop lamp switch input signal.
Check the stop lamp switch. (Refer to GROUP 35 - Brake Pedal.)
Measure at stop lamp switch connector C-02.
D Disconnect the connector, and measure at the harness side.
D Voltage between terminal 2 and earth
OK: System voltage
Measure at engine-ECU connector C-164 <M/T> or engine-A/T-
ECU connector C-174 <A/T>.
D Disconnect the connector, and measure at the harness side.
D Voltage between terminal 63 <M/T>, 123 <A/T> and earth
(Ignition switch: ON)
OK: 0 - 3 V (when the brake pedal is not depressed)
System voltage (when the brake pedal is depressed)
Check the following connectors: C-164 <M/T>, C-174 <A/T>
Check trouble symptom.
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
INSPECTION PROCEDURE 35
Small lamp switch system
The engine-ECU <M/T> or engine-A/T-ECU <A/T> determines whether the small
lamp switch is on or off. According to that information, the engine-ECU <M/T> or
engine-A/T-ECU <A/T> controls alternator output current when the vehicle is
started.
Measure at the engine-ECU connector C-163 <M/T> or engine-A/T-
ECU connector C-175 <A/T>.
D Disconnect the connector, and measure at the harness
side.
D Voltage between 88 <M/T>, 86 <A/T> and earth
(Lighting switch: ON)
OK: System voltage
Check the following connectors: C-163 <M/T>, C-175 <A/T>
Check the trouble symptoms.
Replace the engine-ECU <M/T> or engine-A/T-ECU <A/T>.
GDI -
OK
OK
OK
OK
NG
OK
OK
NG
Troubleshooting
Probable cause
D Malfunction of the stop lamp switch
D Open circuit or short-circuited harness wire in the stop
lamp circuit, or poor connector contact
D Malfunction of the engine-ECU <M/T>
D Malfunction of the engine-A/T-ECU <A/T>
NG
Replace
NG
Check the following connectors: C-12<RHD>, C-134, C-142
OK
Check trouble symptom.
Check the harness wire between the battery and stop lamp switch.
NG
Check the following connectors: C-02, C-47, C-65, C-83
OK
Check trouble symptom.
Check the harness wire between the engine-ECU <M/T> or engine-
A/T-ECU <A/T> and stop lamp, and repair if necessary.
NG
Repair
Probable cause
D Improper connector contact, open circuit or
short-circuited harness wire in the taillamp circuit
D Malfunction of the engine-ECU <M/T>
D Malfunction of the engine-A/T-ECU <A/T>
NG
Check the taillamp circuit. (Refer to ELECTRICAL WIRING.)
NG
Repair
13I-97
NG
Repair
NG
NG
Repair
NG