Yamaha RX10H Service Manual page 608

Fault code No. 30
Used diagnostic code No. – –
Order Inspection operation item and probable
cause
1 Oil pressure dropped
2 Oil pressure switch lead-short circuit
detected.
3 Defective oil pressure switch
Fault code No. 33
Used diagnostic code No. 30 (ignition coil #1)
Order Inspection operation item and probable
cause
1 Connected condition of connector
Inspect the coupler for any pins that
may have pulled out.
Check the locking condition of the
coupler.
2 Open or short circuit in lead.
3 Detective ignition coil (test the primary
and secondary coils for continuity).
Fault code No. 34
Used diagnostic code No. 31 (ignition coil #2)
Order Inspection operation item and probable
cause
1 Connected condition of connector
Inspect the coupler for any pins that
may have pulled out.
Check the locking condition of the
coupler.
2 Open or short circuit in lead wire.
3 Defective ignition coil (test the primary
and secondary coils for continuity).
FUEL INJECTION SYSTEM
Symptom Oil pressure dropped.
Operation item and countermeasure
Keep the snow mobile horizontal and then measure
the oil pressure after the sufficient warm-up, and
check that the value is 25 kpa or more.
It measures between engine earths from the oil
pressure switch connector (Yellow/Green) with the
circuit tester.
NOTE:
Disconnect is ECU coupler.
After 1 minute has passed since the engine start,
measure the resistance between the oil pressure
switch and switch body with a circuit tester, and it
will be OK if the result showed ∞.
Symptom Malfunction detected in the primary lead of the ignition coil (#1).
Operation item and countermeasure
If there is a malfunction, repair it and connect it
securely.
Ignition coil primary side coupler – Orange
Main wiring harness ECU coupler
Repair or replace if there is an open or short circuit.
Between ignition coil coupler (#1) and ECU
coupler/main harness
Orange – Orange
Red/White – Red/White
Execute the diagnostic mode (Code No.30).
Replace if defective.
Refer to "IGNITION SYSTEM" in CHAPTER 8.
Symptom Malfunction detected in the primary lead of the ignition coil (#2).
Operation item and countermeasure
If there is a malfunction, repair it and connect it
securely.
Ignition coil primary side coupler – Gray/Red
Main wiring harness ECU coupler
Repair or replace if there is an open or short circuit.
Between ignition coil coupler (#2) and ECU
coupler/main harness
Gray/Red – Gray/Red
Red/White – Red/White
Execute the diagnostic mode (Code No.31).
Replace if defective.
Refer to "IGNITION SYSTEM" in CHAPTER 8.
79
FI
Reinstatement
method
Reinstatement
method
Reinstated by
starting the
engine and
operating it at
idle.
Reinstatement
method
Reinstated by
starting the
engine and
operating it at
idle.