Mitsubishi FUEL Manual page 285

INSPECTION PROCEDURE 27
Injector driver relay system
When the ignition switch ON signal is input to the engine-ECU <M/T> or the
engine-A/T-ECU <A/T>, engine-ECU <M/T> or the engine -A/T-ECU <A/T> turns
on the injector driver relay.
This causes system voltage to be supplied to the injector driver.
Check the injector driver relay. (Refer to P.13A-107*.)
Measure at the injector driver relay connector B-100.
D Disconnect the connector, and measure at the harness side.
(1) Voltage between 1 and earth
OK: System voltage
(2) Voltage between 3 and earth (Ignition switch: ON)
OK: System voltage
Measure at the engine-ECU connector C-164 <M/T> or
engine-A/T-ECU connector C-177 <A/T>.
D Disconnect the connector, and measure at the harness side.
D Voltage between 55 <M/T>, 6<A/T> and earth
(Ignition switch: ON)
OK: System voltage
Check the following connectors: C-164 <M/T>, C-177 <A/T>
OK
Check the trouble symptoms.
Measure at the injector driver connector B-96.
D Connect the connector.
D Voltage between 12, 21 and earth (Ignition switch: ON)
OK: System voltage
Check the injector driver system.
(Refer to P.13A-55, INSPECTION PROCEDURE FOR
DIAGNOSIS CODE P1200.)
NOTE:
*: Refer to the '99 GALANT Workshop Manual (Pub. No. PWDE9611-A)
GDI -
OK
OK
OK
NG
Repair
NG
OK
Troubleshooting
Probable cause
D Malfunction of the injector driver relay
D Improper connector contact, open circuit or
short-circuited harness wire
D Malfunction of the engine-ECU <M/T> or
engine-A/T-ECU <A/T>
NG
Replace
(1) NG
Check the harness wire between the injector driver relay and the
battery, repair if necessary.
(2) NG
Check the following connectors: C-92, C-131
Check the trouble symptoms.
Check the harness wire between the injector driver relay and the
ignition switch, repair if necessary.
NG
Check the following connector: B-100
Check the trouble symptoms.
Check the harness wire between the injector driver relay and the
engine-ECU <M/T> or the engine-A/T-ECU <A/T>, repair if
necessary.
NG
Check the following connector: B-100
Check the trouble symptoms.
Check the harness wire between the injector driver relay and the
injector driver, repair if necessary.
13I-91
OK
NG
Repair
NG
OK NG
Repair
NG
OK NG
Repair
NG