Service manual

47
8/14/02
47
FUEL INJECTORS
Fault Possible Cause Action
Injector A short fault (left)
Injector B short fault (right)
Damaged injector or ECU,
harness short circuit
- flooding indicates short
circuit
Component test the injector. Refer to
"Fuel Injectors" starting on page 19.
Check that injector harness connector is
secure.
Disconnect ECU and go to Test 1.
Injector A open fault (left)
Injector B open fault (right)
Damaged injector, injector
connector disconnected or
damaged, harness open
circuit
- misfire indicates open
circuit
Pinpoint Tests
Test Result Action
1. Check wire and terminal
integrity:
- P1 H2
- P1 H3
OK Go to Test 2.
Faulty
Locate and correct wiring fault and go to
Test 7.
2. Check resistance value:
Motorcycle
Disconnect diagnostic connector
CN10, lighting connector CN26,
remove EMS power relay.
Measure between relay socket
terminal 30 and:
- P1 H2 (Left injector)
- P1 H3 (Right injector)
ATV
Disconnect the ignition coil,
diagnostic connector CN10,
switch engine stop button to
OFF position. Measure between
P2 E1and:
- P1 H2 (Left injector)
- P1 H3 (Right injector)
12.25
± 0.50 Ohms at 20 ±
2°C
Disconnect relevant injector and go to
Test 3.
Open circuit Go to Test 4.
Short circuit
Disconnect relevant injector and go to
Test 5.