Mercury V6 175 Diagnostic Manual page 187

Use the DMT 2004 digital multimeter and test probe kit to check for continuity between the ETC and the PCM.
DMT 2004 Digital Multimeter
Terminal Test Probe Kit
M
b
A
4 1
A
c
H
1 4
a - ETC connector
b - PCM connector B
c - PCM connector C
Connector
6 5 4
1. Remove the cold air intake assembly. Refer to the appropriate service manual for details.
2. Disconnect the ETC from the engine harness.
a
3. Remove the port intake manifold runner assembly. Refer to the appropriate service manual for details.
4. Disconnect the PCM from the engine harness. The connectors must be removed in sequence: A, B, and then C. Refer to
the appropriate service manual for details.
5. Test the engine harness for continuity between each of the ETC connector pins and the PCM connectors:
90-8M0146617 eng JULY 2018
A1
LT BLU/BLK
J2
WHT/YEL
J4
M4
A1
100A
BLK/ORN
E1
PPL/YEL
F1
101A S101
BLU/RED
H1
BLK/RED
H2
H4
Pin
1
3 2 1
2
3
4
5
65664
6
91‑892647A01
Bosch P/N MM‑ 46523
BLK/RED
BLU/RED
WHT/YEL
PPL/YEL
LT BLU/BLK
BLK/ORN
100C
Wire Color
Black/red
Blue/red
White/yellow
Purple/yellow
Light blue/black
Black/orange
a -
b -
c -
b
c
66467
© 2018 Mercury Marine
Actuators and Relays
a
1
2
3
4
5
6
65463
Function
Throttle actuator A (+)
Throttle actuator B (–)
Throttle position 2
Sensor power A (+)
Throttle position 1
Sensor ground A (–)
Throttle body
ETC connector on the engine
harness
ETC
PCM
CH2
CH1
BJ4
CF1
BJ2
CE1
Page 5B-3