Mercury 20 EFI FourStroke

Sensor Wiring Diagram
15/20 EFI sensor wiring diagram
a - Temperature and manifold absolute
pressure (TMAP) sensor
b - Throttle position sensor (TPS)
c - Engine coolant temperature (ECT)
sensor
d - Crankshaft position sensor (CPS)
e - Engine control module (ECM)
J2
J3
GRN/ORN
RED/WHT
RED/WHT
BLK
BLU/WHT
GRN/YEL
GRN/WHT
BLK/BLU
GRN/WHT
RED/WHT
BLK/BLU
GRN/ORN
RED/WHT
BLU/WHT
BLK/BLU BLK/BLU
GRN/YEL
RED/WHT BLK
1
2
1 2
3
4
1 2
3
1
18
1734
17
1
10
3
2
4
5
6
7
13
15
12
11
14
16
9
8
34
18
27
20
19
21
22
23
24
30
32
29
28
31
33
26
25
1 2
1 2
1 2
3
1 2
3
4
1 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
c
b
a
e
d
63750
Troubleshooting and Diagnostics
Page 3B-4 © 2018 Mercury Marine 90-8M0125265 eng NOVEMBER 2017