Mercury 15 EFI FourStroke, Service Manual

Page: 83 / 406

Throttle Position Sensor (TPS)
The throttle position sensor (TPS) is located on the throttle body and is in direct contact with the throttle shaft. The TPS
transmits throttle angle information to the ECM, which regulates the fuel injector volume (pulse width) and ignition timing.
63004
TPS Replacement
To replace the TPS:
1. Remove the throttle body from the engine. Refer to
Section 3C
‑
Throttle Body Removal
.
2. Remove the two Torx® screws that secure the TPS to the throttle body, and remove the TPS.
3. Attach the new TPS to the throttle body, and secure it with the two Torx® screws, positioned in the center of the two slots.
a - Torx® screw (2)
b - Slot (2)
4. Connect the TPS to the engine harness, and connect and launch CDS G3.
5. Navigate to the
Live Data
screen to view the
Throttle Position
value.
6. Adjust the position of the TPS until the value reads 0.6° ± 0.1°.
7. Tighten the two Torx® screws. Confirm that the TPS value did not change.
8. Disconnect CDS G3.
9. Install the throttle body onto the engine. Refer to
Section 3C
‑
Throttle Body Installation
.
Wiring Diagram
a - ECM
b - TPS
a
a
b
b
65358
J2
J3
RED/WHT
BLU/WHT
BLK/BLU
RED/WHT
BLU/WHT
BLK/BLU
1
2
3
7
23
27
1
2
3
1 18
17 34
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
a
b
62912
Ignition
Page 2A-12 © 2018 Mercury Marine 90-8M0125265 eng NOVEMBER 2017