Fault Code No. P2122, P2123, P2127, P2128, P2138 - Yamaha TMAX XP530E-A 2017 Service Manual

Fault code No.
Item
6 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 trouble-
shooting 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).
2 Connection of ECU 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).
P1604, P1605
[P1604] Lean angle sensor: ground short circuit detected.
[P1605] Lean angle sensor: open or power short circuit.
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
• 11–20 (fully closed position)
• 95–106 (fully open position)
• Check with throttle grip in fully closed position.
• Check with throttle grip in fully open position.
Accelerator position sensor signal 2
• 9–23 (fully closed position)
• 93–109 (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.
Improperly connected  Con-
nect the coupler securely or
replace the wire harness.
8-105
FUEL INJECTION SYSTEM
Confirmation of service com-
Push the ON/start switch, and
then check the condition of the
fault code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is "Recovered"  Go
to item 7 and finish the service.
Condition is "Detected"  Go to
item 2.
Push the ON/start switch, and
then check the condition of the
fault code using the malfunction
mode of the Yamaha diagnostic
tool.
Condition is "Recovered"  Go
to item 7 and finish the service.
Condition is "Detected"  Go to
item 3.
pletion