Mercury D4.2L D-Tronic

WIRING DIAGRAMS
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 4E-17
Engine Wiring - Starting and Charging System - Page 2 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 - Starter
12 - Engine Coolant Temperature Sender
13 - Glow Plugs (If Equipped)
14 - Alternator
15 - Transmission Neutral Safety Switch
16 - Transmission Temperature Switch
17 - Oil Pressure / Audio Warning Switch
18 - Oil Pressure Sender
19 - Diagnostic Connector
20 - Engine Harness Connector
21 - 5 Amp Fuse
22 - Wires Not Used On This Model
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
ENGINE HARNESS CONNECTOR
NOTE: Refer to Item Number 20 on Electrical Box, from preceding page.
Terminal
Number
Wire Color
Code
Terminal
Number
Wire Color
Code
Terminal
Number
Wire Color
Code
1 PINK 7 BLK 13 YEL
2 BRN/WHT 8 LT BLU 14 PPL
3 PPL 9 ORN 15 PPL
4 BLK 10 GRY 16 GRN/WHT
5 BRN/BLK 11 WHT
6 YEL/BLK 12 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 2 BLK 3 PNK (+)