Connector Chart - Mercury MerCruiser D2.8L D-Tronic Service Manual

SERVICE MANUAL NUMBER 22

Connector Chart

The following chart will aid in identification and diagnosis of wiring circuits that are attached
to the ECM through the 68 pin connector.
AVOID loss of engine operation or wiring damage. Serious electrical damage could
result from improper probing of wires and connectors. Do NOT damage wires,
connectors or electrical system.
NOTE: Clear each code after disconnecting and reconnecting each sensor. Failure to do
so may result in an incorrect diagnosis of the problem.
ECM Pin
90-860074--1 FEBRUARY 2002
Circuit Designation
1 Battery Minus
2 Engine Speed sensor signal output
3 Glowplug Indicator Lamp
4 Fuel Quantity Actuator
5 Fuel Quantity Actuator
6 Unused
Fuel Quantity Control Sleeve Position
7
Sensor (Middle Tap)
Engine Speed Sensor Signal (shield
8
wire)
9 Unused
10 Unused
11 Instrumented Injector Ground
12 Instrumented Injector Signal
13 Unused
Engine Coolant Temperature (ECT)
14
Sensor
15 Throttle Position Sensor (signal)
16 Unused
17 Unused
CAUTION
Wire Color Wire Color
Abbreviation
BRN/BLK
BLK/YEL
GRN/WHT
(twisted pair)
GRN/WHT
(twisted pair)
WHT/BRN
ORN/WHT
EDI DIAGNOSIS
Diagnostic
Trouble Trouble
Codes
ScanTool
BLK P1600
P1735
P1645
P1220
P1220
- -
ORN P1225
WHT P0725
- -
- -
BRN P1201
WHT P1725
- -
P0115
P1515
- -
- -
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