Infiniti FX35, FX50 (S51). Manual — part 13
ADP-44
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (DRIVER SEAT C/U)
WORK SUPPORT
MIRROR MOTOR LH
Activates/deactivates the mirror motor (driver side).
MEMORY SW INDCTR
Turns ON/OFF the memory indicator.
Test item
Description
Work item
Content
Item
SEAT SLIDE VOLUME SET
The amount of seat sliding for entry/exit assist can be selected
from 3 items.
40 mm
80 mm
150 mm
EXIT TILT SETTING
Entry/exit assist (steering column) can be selected:
ON (operated) – OFF (not operated)
ON
OFF
EXIT SEAT SLIDE SETTING
Entry/exit assist (seat) can be selected:
ON (operated) – OFF (not operated)
ON
OFF
U1000 CAN COMM CIRCUIT
ADP-45
< DTC/CIRCUIT DIAGNOSIS >
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ADP
N
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DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000005249653
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN H-line, CAN L-line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
DTC Logic
INFOID:0000000005249654
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
STEP 1
Turn ignition switch ON and wait at least 3 seconds.
>> GO TO 2.
2.
STEP 2
Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected?
YES
>> Perform diagnosis procedure. Refer to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005249655
LAN-20, "Trouble Diagnosis Flow Chart"
Special Repair Requirement
INFOID:0000000005249656
ADP-9, "SYSTEM INITIALIZATION : Description"
.
DTC
Trouble diagnosis
name
DTC detecting condition
Possible cause
U1000
CAN COMM CIR-
CUIT
• Driver seat control unit cannot communicate to other
control units.
• Driver seat control unit cannot communicate for more
than the specified time.
• Harness or connectors
(CAN communication line is
open or shorted)
ADP-46
< DTC/CIRCUIT DIAGNOSIS >
B2112 SLIDING MOTOR
B2112 SLIDING MOTOR
Description
INFOID:0000000005249657
• The seat sliding motor is installed to the seat cushion frame.
• The seat sliding motor is installed with the driver seat control unit.
• Slides the seat forward/backward by changing the rotation direction of sliding motor.
DTC Logic
INFOID:0000000005249658
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
RERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected?
YES
>> Perform diagnosis procedure. Refer to
NO
>> INSPECTION END
NOTE:
First perform diagnosis for B2126 if B2126 is detected.
Diagnosis Procedure
INFOID:0000000005249659
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Check “Self diagnostic result” with CONSULT-III.
3.
Erase the DTC.
4.
Perform DTC confirmation procedure. Refer to
.
Is the DTC displayed again?
YES
>> GO TO 2.
NO
>> Check intermittent incident. Refer to
GI-36, "Intermittent Incident"
.
2.
CHECK SLIDING MOTOR CIRCUIT (POWER SHORT)
1.
Turn ignition switch OFF.
2.
Disconnect sliding motor and driver seat control unit connector.
3.
Check voltage between sliding motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL
1.
Connect driver seat control unit connector.
2.
Check voltage between driver seat control unit harness connector and ground.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2112
SEAT SLIDE
The driver seat control unit detects the output of slid-
ing motor output terminal for 0.1 second or more
even if the sliding switch is not input.
• Driver seat control unit
• Slide motor harness is power
shorted
(+)
(–)
Voltage (V)
(Approx.)
Sliding motor
Connector
Terminals
B461
35
Ground
0
42
B2112 SLIDING MOTOR
ADP-47
< DTC/CIRCUIT DIAGNOSIS >
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G
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B
ADP
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Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace driver seat control unit. Refer to
ADP-215, "Removal and Installation"
4.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
.
>> INSPECTION END
(+)
(–)
Voltage (V)
(Approx.)
Driver seat control unit
Connector
Terminals
B451
35
Ground
0
42
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