Polaris Virage TX 2000 Service Manual page 248

ELECTRICAL
RPM Limiter Circuits
RPM Limiter Function
An RPM limiting system protects the engine by electronically limiting RPM in the event of engine overheat. This
feature is designed to help prevent engine damage due to engine overheating.
Engine Overheat - Virage TX. SLX. Pro 1200. and Genesis
If the engine overheats, the thermal switch becomes conductive and provides a ground path for the tan wire lead
ing from the CDI module and the Multi-Function Display. The Multi-Function Display will display a "HOT" warning
message, the warning light will flash, and the engine RPM will be limited to approximately 4500 RPM. A circuit
within the CDI senses the ground path connection and activates the limiting function. See diagram below.
Low Fuel
No low fuel limiters are present on these models.
Important Note: When the engine overheat circuit has caused the system to limit, it will continueto limit until
both of the following conditions are met:
1. The problem that caused the initial limiting must be corrected (cool engine);
AND
2. The operator must momentarily release the throttle and allow the RPM to fall below 4500.
Electrical Box
tan
Multi-Function
Display
tan
Thermal Switch
(on engine)
CDI Unit i
L—:Y
Terminal
Board
gray
When limiter circuit is activated engine
RPM will be limited to 4500.
RPM Limiter System Troubleshooting
RPM Limiter System Troubleshooting flowchart is shown below.
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