Nissan Sentra B18 (2020-2025) Service Manual: U1112-24 Deceleration Request Signal
Dtc Description
DTC Description
DTC DETECTION LOGIC
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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|
U1112 |
24 |
DECELERATION REQUEST SIGNAL (Deceleration Request Signal) |
1 |
Diagnosis condition |
Accelerator pedal opening ≥ 4 deg |
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Signal |
CAN communication signal |
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Threshold |
TCM is unable to receive the CAN communications signal from chassis control module |
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Diagnosis delay time |
2 seconds |
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2 |
Diagnosis condition |
Nissan Sentra Vehicle speed ≤ 10 km/h (6 MPH) |
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Signal |
CAN communication signal |
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|
Threshold |
TCM is unable to receive the CAN communications signal from chassis control module |
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Diagnosis delay time |
10 seconds |
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POSSIBLE CAUSE
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Harness or connector (CAN communication line is error)
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Chassis control module
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TCM
FAIL-SAFE
Not changed from normal driving
DTC CONFIRMATION PROCEDURE
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PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, ignition switch OFF and wait for at least 10 seconds, then perform the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V.
>>GO TO 2.
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CHECK DTC DETECTION
With CONSULT-
Start the engine and wait for at least 10 seconds.
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Drive the Nissan Sentra vehicle at 10 km/h (6 MPH) for at least 10 seconds.
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Stop the vehicle.
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Check the DTC.
Is "U1112-24" detected?
YES >>Go to Diagnosis Procedure.
NO >>INSPECTION END
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Diagnosis Procedure
Diagnosis Procedure
For the diagnosis procedure, refer to Trouble Diagnosis Flow Chart.
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Seatback trim
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Seatback pad
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Diagnosis Procedure
Diagnosis Procedure
CHECK MODE DOOR MOTOR POWER SUPPLY
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Check voltage between mode door motor harness connector
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