Yamaha MBK X-MAX 300 2017 Service Manual page 452

SELF-DIAGNOSTIC FUNCTION AND DIAGNOSTIC CODE TABLE
Fault code
Item
No.
P1604 [P1604] Lean angle
P1605 sensor (ground short
circuit detected)
[P1605] Lean angle
sensor (open or pow-
er short circuit detect-
ed)
P2158 Rear wheel sensor
(no normal signals are
received from the rear
wheel sensor)
P2195 O sensor (open cir-
2
cuit detected) (no nor-
mal signals are
received from the O
sensor)
Probable cause of
malfunction
[P1604] Low voltage
of the lean angle sen-
sor circuit (0.2 V or
less)
[P1605] High voltage
of the lean angle sen-
sor circuit (4.8 V or
more)
• Defective connec-
tion of lean angle
sensor coupler.
• Defective connec-
tion of ECU coupler.
• Open or short cir-
cuit in wire harness
between lean angle
sensor and ECU.
• Defective lean an-
gle sensor.
• Malfunction in ECU.
• Open or short cir-
cuit in wire harness
between rear wheel
sensor and ABS
unit.
• Open or short cir-
cuit in wire harness
between ABS unit
and ECU.
• Defective rear wheel
sensor.
• Defective ABS unit.
• Malfunction in ECU.
• Signal voltage is
0.25–0.53 V.
• Improperly installed
O sensor.
2
2
• Defective coupler
between O sensor
2
and ECU.
• Open or short cir-
cuit in wire harness
between O sensor
2
and ECU.
• Defective O sensor.
2
• Malfunction in ECU.
9-7
Vehicle symptom
Engine cannot be
started.
Engine stops.
Traction control sys-
tem does not operate.
Traction control sys-
tem indicator light on
the multi-function me-
ter comes on.
"TCS" indicator light
on the multi-function
meter cannot be used
(the traction control
system is turned off).
Increased exhaust
emissions.
Fail-safe system op-
eration
When engine is run-
ning: Engine is force-
fully stopped.
When engine is
stopped: Engine can-
not be started.
Traction control sys-
tem does not operate.
O feedback is not
2
carried out.