Yamaha PZ50W Service Manual page 286

Fault code No. 85
Diagnostic code No. – –
Order Item/components and probable cause
1 Connections
Oil pressure switch coupler
Wire harness ECU coupler
2 Open circuit in wire harness.
3 Defective oil pressure switch.
Fault code No. 88
Diagnostic code No. – –
Order Item/components and probable cause
1 Installed condition of switch
2 Connections
Drive position switch connector
Reverse position switch connector
Wire harness ECU coupler
3 Short circuit in wire harness and/or gear
motor sub-wire harness.
4 Defective drive position switch and/or
reverse position switch.
FUEL INJECTION SYSTEM
Symptom Oil pressure switch: open circuit detected.
Check or maintenance job
Check the couplers for any pins that may have
pulled out.
Check the locking condition of the couplers.
If there is a malfunction, repair it and connect the
coupler securely.
Repair or replace if there is an open circuit.
Between oil pressure switch coupler and ECU
coupler.
Yellow/Green – Yellow/Green
With the engine stopped, check that there is con-
tinuity between the oil pressure switch terminals
and oil pressure switch body metal components.
Drive position switch: short circuit detected.
Symptom
Reverse position switch: short circuit detected.
Check or maintenance job
Check for looseness or pinching.
Check the couplers for any pins that may have
pulled out.
Check the locking condition of the couplers.
If there is a malfunction, repair it and connect the
coupler securely.
Repair or replace if there is an short circuit.
Between drive position switch connector and
ECU coupler.
White/Blue – White/Blue
Between reverse position switch connector and
ECU coupler.
White/Red – White/Red
Replace if defective.
Refer to "DRIVE POSITION SWITCH AND
REVERSE POSITION SWITCH (PZ50GT/
PZ50FX/PZ50M/PZ50VT/PZ50MP)" in CHAP-
TER 8.
7-26
FI
Reinstatement
method
Starting the
engine and
operating it at
idle.
Reinstatement
method
Starting the
engine and
operating it at
idle.