Mercury D4.2L D-Tronic

WIRING DIAGRAMS
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 4E-19
Engine Wiring - Starting and Charging System - Page 3 of 4
1-ECM / Fuel System Harness
Connector
2-Electrical Box
3-Main Relay
4-Start Relay
5-Glow Plug Relay (Optional)
6-Glow Plug Relay (Optional)
7-60 AMP Circuit Breaker
8-60 AMP Circuit Breaker
9-12 Volt Battery
10 - Engine Ground Stud
11 - Wires Not Used On This Model
12 - Wires Not Used On This Model
13 - Transmission Neutral Safety Switch
14 - Transmission Temperature Switch
15 - Engine Coolant Temperature Sender
16 - Starter
17 - Glow Plugs (If Equipped)
18 - Alternator
19 - Oil Pressure / Audio Warning Switch
20 - Oil Pressure Sender
21 - Diagnostic Connector
22 - 5 Amp Fuse
23 - Engine Harness Connector (21-Pin
Deutscht)
24 - Idle Speed Setting Circuit
1.
Keep wires separated. Not used on this model. Tape each wire separately with
at least two layers of electrical tape.
ECM / FUEL SYSTEM HARNESS CONNECTOR
NOTE: Refer to Item Number 1 on Electrical Box, from preceding page.
Terminal
Number
Wire Color
Code
Terminal
Number
Wire Color
Code
Terminal
Number
Wire Color
Code
1 PNK 5 BRN/BLK 9 RED
2 BRN/WHT 6 YEL/BLK 10 BLK
3 BLU/BLK 7 GRN 11 BLK
4 PPL 8 RED 12 RED/ORN
ENGINE HARNESS CONNECTOR
NOTE: Refer to Item Number 20 on Electrical Box, from preceding page.
Terminal
Letter
Wire Color
Code
Terminal
Letter
Wire Color
Code
Terminal
Letter
Wire Color
Code
A YEL/RED H TAN R YEL/WHT
B RED J LT BLU S ORN
C TAN/BLK K BLU/TAN T BRN/WHT
D BLK L BLK/YEL U (NOT USED)
E GRN/RED M YEL V (NOT USED)
F TAN/WHT N PPL/YEL X RED/YEL
G PPL P GRY W BRN
DIAGNOSTIC CONNECTOR
NOTE: Refer to Item Number 19 on Electrical Box, from preceding page.
Terminal
Number
Wire Color
Code
Terminal
Number
Wire Color
Code
Terminal
Number
Wire Color
Code
1 PPL/YEL 2 BLK 3 PPL (+)