AFR200 Series, Product User Guide
This document is subject to change without notice.
Caution: None of GAC products are flight certified controls including this item
Copyright © 2010, Governors America Corp., All Rights Reserved
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PUG4144 D
11 Symptom Troubleshooting
Problem
Actions / Possible Solutions
Engine does not start (disable fuel
supply before troubleshooting)
1. Verify power to the AFR controller
a. Check for green power LED indicator
b. Check for adequate battery voltage
c. Check power cable and supply
2. Verify engine speed is reporting
a. Verify proper settings in SmartVU
b. Check magnetic pickup clearance
c. Check wiring to magnetic pickup
3. Verify proper actuator operation
a. Verify proper settings in SmartVU
b. Verify actuator duty cycle in SmartVU
c. Measure voltage to actuator
d. Check connections and wiring to actuator
4. Verify proper fuel valve operation
a. Verify proper settings in SmartVU
b. Cycle unit power and verify fuel valve calibration
c. Check wiring to fuel valve
5. Verify the ignition system is accurately providing spark to the
cylinders
Only after all of these items have been checked, including any troubleshooting related to SmartVU connection
issues; fuel needs to be enabled to verify the fuel supply and flow to the fuel delivery components. If the engine is
being under-fueled at startup, then increase fuel regulator flow. If the engine is over-fueled at startup, then
decrease flow. In most cases it is best to decrease the flow of the regulator to its minimum and increase the flow
while cranking until the engine starts.
