Yamaha YZF-R1 Series Service Manual page 547

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
DTC Item
P2158 Front wheel sensor:
no normal signals are
received from the
front wheel sensor.
P2195 O sensor 1: open cir-
2
cuit detected.
P2197 O sensor 2: open cir-
2
cuit detected.
Probable cause of
malfunction
• Open or short cir- Traction control does
cuit in wire harness not work.
between front wheel Traction control sys-
sensor and ABS tem indicator on the
ECU. meter comes on.
• Open or short cir- Traction control sys-
cuit in wire harness tem switch is dis-
between ABS ECU abled. (Traction
and ECU. control system indica-
• Defective front tor on the meter goes
wheel sensor. OFF.)
• Malfunction in ABS
ECU.
• Malfunction in ECU.
• Signal voltage is Increased exhaust
0.18–0.49 V. emissions.
• Improperly installed
O sensor 1.
2
• Defective coupler
between O sensor
2
1 and ECU.
• Open or short cir-
cuit in wire harness
between O sensor
2
1 and ECU.
• Incorrect fuel pres-
sure.
• Defective O sensor
2
1.
• Malfunction in ECU.
• Signal voltage is Increased exhaust
0.18–0.49 V. emissions.
• Improperly installed
O sensor 2.
2
• Defective coupler
between O sensor
2
2 and ECU.
• Open or short cir-
cuit in wire harness
between O sensor
2
2 and ECU.
• Incorrect fuel pres-
sure.
• Defective O sensor
2
2.
• Malfunction in ECU.
9-50
Fail-safe system op-
Vehicle symptom
Traction control does
not work.
O
2
carried out.
O
2
is not carried out.
Air induction system
solenoid is turned on
all the time (air induc-
tion system air cut
off).
QSS is not carried
out.
O
2
carried out.
O
2
is not carried out.
Air induction system
solenoid is turned on
all the time (air induc-
tion system air cut
off).
QSS is not carried
out.
eration
feedback is not
feedback learning
feedback is not
feedback learning