ENGINE CONTROL MODULE (ECM) - POWER GROUND

Check the ground condition of the engine control module.

CIRCUIT DIAGRAM
HARNESS INSPECTION PROCEDURE
MFI CONTROL RELAY

When the ignition switch is on, battery power is supplied to the ECM, the injectors, the MAP sensor, etc. While the ignition switch is turned on, current flows from the ignition switch through the current relay coil to ground.

CIRCUIT DIAGRAM
HARNESS INSPECTION PROCEDURES
MFI CONTROL RELAY INSPECTION
1.

Check continuity of relay contacts between terminals 5 (+) and 1 (-).

Relay coil (between terminal 2 & 4)

Continuity

When de-energized

No

When energized

Yes

2.

If faulty, replace the MFI control relay.

Tightening torque

MFI control relay :

7 ~ 11 Nm (70 ~ 110 kg·cm, 5.2 ~ 8.1 lb·ft)

Яндекс.Метрика