190E 2.3 (201.024) L4-2.3L (102.961) (1984)
Engine Control Module: Testing and Inspection
Ohms Measurements
For ECM connector view and legend refer to "Engine Control Module : Diagrams : Connector Views. See: Diagrams/Connector Views
CAUTION: When measuring ohms disconnect the ECU from the harness plug and never turn the ignition key on. It is possible that failure to follow
these steps will result in damage to the ECU.
Grounds
Deceleration Micro Switch
Coolant Temperature Sensor
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Terminal 7 is for MY 1987 and later excluding the 16 valve.
Air Temperature Sensor
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Air temperature is installed on the 190E 16 valve as of
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MY 1986 terminal 14.
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MY 1987 terminal 11.
Throttle Switch
** If throttle is opened reading should go to infinity. Does not apply for micro switch version on 84-87 190E.
Electro-hydraulic Actuator