Mitsubishi FUEL Manual page 144

13A-144
Code No. 1600 Communication wire with A/T-ECU system
<A/T>
Range of Check
D 60 seconds or more have passed immediately after engine was started.
D Engine speed is approx. 50 r/min or more
Set conditions
The voltage of the torque reduction request signal from the A/T-ECU is LOW for
1.5 seconds or more.
Check the following connectors:
(C-30, C-166) <Vehicles without TCL, vehicles without ASC>,
(C-28, C-166) <Vehicles with TCL, vehicles with ASC>
Check trouble symptom.
Check the harness wire between the engine-ECU and the A/T-ECU
connector.
Repair
Cord No. P1610 Immobilizer system
Range of Check
D Ignition switch: ON
Set Conditions
D Improper communication between the engine-ECU and the immobilizer-ECU
NOTE
(1) If the registered ignition keys are close each other when starting the engine, radio interference may
cause this code to be displayed.
(2) This code may be displayed when registering the key ID code.
Check the following connectors:
C-173, C-81, C-48, C-166, C-167
OK
Check the harness wire between the
immobilizer-ECU and the
engine-ECU.
OK
Check the trouble symptoms.
NG
Replace the immobilizer-ECU.
Check the trouble symptoms.
NG
Replace the engine-ECU.
MPI <6A1> -
OK
NG
NG
NG
Repair
NG
Replace
Troubleshooting
Probable cause
D Malfunction of the harness wire and the connector
D Malfunction of the engine-ECU
D Malfunction of the A/T-ECU
NG
Repair
OK
Replace the engine-ECU.
Check trouble symptom.
Replace the A/T-ECU.
Probable cause
D Open or short circuit, or loose connector contact
D Malfunction of the immobilizer-ECU
D Malfunction of the engine-ECU
NG