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Nissan Quest E52. Manual - part 1048
SEATBACK POWER RETURN CONTROL UNIT
SE-21
< ECU DIAGNOSIS INFORMATION >
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Fail-safe
INFOID:0000000009652940
Even if the automatic return control is inactivated, the fold-down and manual return operations can be per-
formed.
31
(W/R)
Ground
Ground
[Limit switch (LH)]
—
—
—
32
(L/W)
Ground
Ground
—
—
—
Terminal No.
(Wire color)
Description
Condition
Value
(+)
(–)
Signal name
Input/
Output
Malfunction items
Fail-safe in operation
Seatback angle limit switch stays in the
“ON” position
Seatback power return control unit judges that power return motor and gear are locked
during operation because the return complete position of third seatback cannot be rec-
ognized. Seatback power return control unit operates power return motor in the reverse
rotation.
Seatback angle limit switch stays in the
“OFF”position
Seatback power return control unit recognizes that third seatback is in the return com-
plete position. Third seatback does not operate when third seat fold switch is operated
in the following up direction.
Sector gear position limit switch stays
in the “ON” position
Seatback power return control unit recognized that sector gear is locked during opera-
tion and stops power motor operation. Operation of seatback power return system is in-
hibited when the above status is recognized continuously 4 times.
Sector gear position limit switch stays
in the “OFF” position
When sector gear position limit switch does not turn ON after seatback power return op-
eration is started, seatback power return control unit judges that sector gear is locked
and operates power return motor in the reverse operation.
Motor sensor malfunction (High, Low,
or Fixed)
When pulse does not indicate any change after motor starts to operate, seatback power
return control unit judges that motor sensor is malfunctioning and returns sector gear to
the initial position.