Ecm (Electronic Control Module) - Mercury MerCruiser D2.8L D-Tronic Service Manual

EDI DIAGNOSIS

ECM (Electronic Control Module)

Refer to Service Precautions, in Repair Procedures, BEFORE proceeding.
IMPORTANT: The ECM is a sensitive electrical device, subject to electrostatic
damage. Therefore, take care not to touch connector pins when removing, cleaning
or installing the module.
IMPORTANT: An ECM with derated calibration is used for the D4.2L D-tronic in order
to meet Bodensee emission requirements in twin-installations. Ensure any
replacement ECM is the correct part.
REMOVAL
1. Slide the locking top of the connector aside and disconnect the 68 pin electrical connec-
tor from the engine control module (ECM).
2. Remove ECM from electrical bracket. Retain hardware.
NOTE: A taller ECM bracket is used on D-Tronic engines with V-Drive Transmissions.
Typical
CLEANING
1. Clean the exterior of the ECM with a dry cloth being careful to avoid contact with connec-
tor pins.
2. Clean ECM mountig bracket to assure ground (–) contact.
Page 5E-104
a
a - Electrical Bracket
b - ECM
c - 68 Pin Electrical Connector
NOTICE
c
b
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SERVICE MANUAL NUMBER 22
b
78385
90-860074--1 FEBRUARY 2002