Mercury MerCruiser D2.8L D-Tronic Service Manual page 628

EDI DIAGNOSIS
MIL [Malfunction Indicator Lamp (Diagnostic Lamp)]
MODELS WITH LATE (21 PIN) CONNECTOR
Scan Code:
Blink Code:
Malfunction Indicator Lamp:
BLK
ORN
RED
RED
CIRCUIT DESCRIPTION:
The MIL (Malfunction Indicator Lamp) is controlled by the ECM. The lamp is supplied 12
volts with the key in the ON/RUN position. A ground (–) path is closed when the ECM
determines that a malfunction (trouble code) has occurred. The lamp is illuminated.
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Page 5E-60
a
PPL/YEL
ORN
PPL
BLK
BRN
RED
PPL
BLU/BLK
PPL/YEL c
GRN
RED
RED
BLK
BLK
a - Electrical Box
b - Pin M of Instrumentation Harness 21 Pin Connector
c - Pin 2 of ECM 12 Pin Harness Connector
d - MIL
e - Instrument Panel
f - ECM Supplied Ground Circuit
CKT PIN
ECM controlled Ground (–) for dash panel MIL
P1650
1242
OFF
b
YEL
BRN/WHT
SERVICE MANUAL NUMBER 22
d
26
NAME
90-860074--1 FEBRUARY 2002
e
75305
ECM
f
75476