MAPR_TPS2Rationality
Fault Type:
Horn:
Nonsticky
Caution
Explanation
The values received from the manifold absolute pressure (MAP) sensor and the secondary encoder in the throttle position
sensor (TPS) do not agree.
Possible Causes
•
MAP or ETC wiring problem
•
ETC opening is restricted or airflow to the engine is restricted
•
Intake manifold has vacuum leak
•
MAP sensor or ETC is failed
Summary of Fault Correction Possibilities
•
Correct the MAP sensor or ETC wiring problem.
•
Inspect the cold air intake assembly for obstructions.
•
Inspect the intake manifold for air leaks.
•
Replace the MAP sensor or throttle body assembly.
MicroChi_PWM_ADC
Fault Type:
Horn:
Nonsticky
Critical
Explanation
There is a communication problem with the SmartCraft control system.
Possible Causes
•
Wiring problem
•
Clean power issue
•
Failed command module
Summary of Fault Correction Possibilities
•
Inspect the helm wiring.
•
Inspect the clean power harness.
•
Replace the command module.
N ..........
Neutral_Overspeed
Fault Type:
Horn:
Nonsticky
None
Explanation
Engine speed is above specified limits with the engine in neutral.
Possible Causes
•
Engine is not in gear
•
Shift demand sensor failed
Summary of Fault Correction Possibilities
•
Shift the engine into gear.
•
Inspect the shift demand sensor.
90-8M0146617 eng JULY 2018
Guardian:
UFC:
100%
405‑6
Guardian:
UFC:
5%
4003‑6
Guardian:
UFC:
100%
2092‑23
Transmission to Helm:
Yes
Transmission to Helm:
Yes
Transmission to Helm:
No
© 2018 Mercury Marine
Fault Codes
Freeze Frame Priority:
2
Freeze Frame Priority:
4
Freeze Frame Priority:
1
Page 4A-27