Eclipse L4-1997cc 2.0L DOHC (1991)
ECU Ground Circuit
GROUND CIRCUIT
1. Disconnect the ECU connector.
2. Using an ohm meter, check for continuity between ECU harness terminal 101 and ground.
Continuity
Should exist.
3. Using an ohm meter, check for continuity between ECU harness terminal 106 and ground.
Continuity
Should exist.
If any of the previous tests produce unsatisfactory results, the harness will need to be repaired or replaced. Once repairs have been completed, road
test the vehicle to confirm that the repair has corrected the problem.
If the same problem reoccurs, it is possible that there is an intermittent failure of the component or the ECU. Check for looseness at all harness
junctions and test for an intermittent failure.
