Yamaha Tracer MT09TRAH 2017 Service Manual page 463

Fault code No.
Item
7 Delete the fault code and check
that the engine trouble warning
light goes off.
Fault code No. P2122, P2123, P2127, P2128, P2138
TIP
If a fault code other than No. P2138 (P2122/P2123/P2127/P2128) is detected, perform troubleshooting
first.
Fault code No.
Item
Fail-safe system
Diagnostic code No.
Tool display
14
Procedure
Tool display
15
Procedure
Probable cause of malfunc-
Item
tion and check
1 Connection of accelerator posi-
tion sensor coupler.
Check the locking condition of
the coupler.
Disconnect the coupler and
check the pins (bent or broken
terminals and locking condition
of the pins).
P1606, P1607
[P1606] Intake air pressure sensor 2: ground short circuit detected.
[P1607] Intake air pressure sensor 2: open or power short circuit
detected.
Confirm that the fault code has
a condition of "Recovered"
using the Yamaha diagnostic
tool, and then delete the fault
code.
P2122, P2123, P2127, P2128, P2138
[P2122] Accelerator position sensor: open or ground short circuit
detected.
[P2123] Accelerator position sensor: power short circuit detected.
[P2127] Accelerator position sensor: ground short circuit detected.
[P2128] Accelerator position sensor: open or power short circuit
detected.
[P2138] Accelerator position sensor: output voltage deviation error.
Able/Unable to start engine
Able/Unable to drive vehicle
14, 15
Accelerator position sensor signal 1
• 12–22 (fully closed position)
• 97–107 (fully open position)
• Check with throttle grip in fully closed position.
• Check with throttle grip in fully open position.
Accelerator position sensor signal 2
• 10–24 (fully closed position)
• 95–109 (fully open position)
• Check with throttle grip in fully closed position.
• Check with throttle grip in fully open position.
Maintenance job
Improperly connected  Con-
nect the coupler securely or
replace the wire harness.
8-92
FUEL INJECTION SYSTEM
Confirmation of service com-
Turn the main switch to "ON",
and then check the condition of
the fault code using the mal-
function mode of the Yamaha
diagnostic tool.
Condition is "Recovered"  Go
to item 8 and finish the service.
Condition is "Detected"  Go to
item 2.
pletion