Polaris Virage TX 2000 Service Manual page 294

FFI™ FUEL INJECTION
Action Steps - Ignition System
ACTION STEPS - IGNITION SYSTEM
Step 1: Visually inspect all connections and grounds. Perform resistance test across all ground connections.
Reading MUST be zero (0) ohms. Be sure to calibrate meter before testing.
Step 2: Perform cranking spark test; connect timing light to individual leads. Verify tether cord is connected
to stop switch.
• OK - perform Running Tests. See Step 6.
• No spark on all or on some. Go to Step 3.
Step 3: Check crank position sensor resistance and wire connections. See engine section.
Step 4: Check voltage at coil primary terminals using peak reading voltmeter and coil extenders.
• 180 volts or higher, with no spark on coil. - Replace with known good.
• Low or no voltage on any - substitute a know good coil and recheck primary voltage.
-If voltage is now OK, coil was defective. Replace and verify.
-Still low or no voltage on some - Check White/Red lead of of capacitor. (45V
Circuit). Verify repair.
• No voltage on all - go to Step 5.
Step 5: Voltage Supply Tests. The battery must be fully charged, with all connections clean and tight.
A. Verify tether cord is connected to stop switch.
NOTE: Perform the following tests while problem is occurring.
B. Verify fused B+(battery positive) is present at Red/Purple wire, terminals 1 and 8 of the PCM (see
Chapter 9, page 27). Check should show either 9.5 or more volts while cranking, or 12 or more volts while
running.
• OK - go to Step C.
• Low voltage while cranking:
-Verify battery capacity, condition, and connections. Test voltage drop across
battery cables and starter solenoid.
-Test current draw of starter motor. See Engine Section.
C. Verify output voltage to EMM at stator connectors. Check for both of the following at 12 pin connec
tor across any yellow wires.
• Tether cord connected to stop switch/engine not running.
• Cranking - approximately 20 volts.
Results:
• As specified - Verify continuity of wires between stator and EMM. If OK - replace EMM.
*Voltage can also be monitored using FFI ™ Diagnostic Software.
Step 6: Running Test. Monitor voltages using FFI™ Diagnostic Software while checking each plug lead using
a timing light. Look for consistent flash and only one flash per revolution and steady voltages.
• All OK - suspect worn spark plugs, fuel system problems, or internal problems.
• Check for damage or debris on sensor.
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