Infiniti G37 Coupe. Manual — part 1090
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< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (DRIVER SEAT C/U)
ACTIVE TEST
CAUTION:
When driving vehicle, do not perform active test.
*: Driver seat without automatic driver position system display only “SEAT SLIDE”.
Test item
Description
SEAT SLIDE*
Activates/deactivates the sliding motor.
SEAT RECLINING
Activates/deactivates the reclining motor.
SEAT LIFTER FR
Activates/deactivates the lifting motor (front).
SEAT LIFTER RR
Activates/deactivates the lifting motor (rear).
TILT MOTOR
Activates/deactivates the tilt motor.
TELESCO MOTOR
Activates/deactivates the telescopic motor.
MIRROR MOTOR RH
Activates/deactivates the mirror motor (passenger side).
MIRROR MOTOR LH
Activates/deactivates the mirror motor (driver side).
MEMORY SW INDCTR
Turns ON/OFF the memory indicator.
U1000 CAN COMM CIRCUIT
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< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000001729811
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, CAN-L) 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:0000000001729812
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:0000000001729813
LAN-16, "Trouble Diagnosis Flow Chart"
Special Repair Requirement
INFOID:0000000001729814
Refer to
SE-7, "ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : Special
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)
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< COMPONENT DIAGNOSIS >
B2112 SLIDING MOTOR
B2112 SLIDING MOTOR
Description
INFOID:0000000001729815
• The seat sliding motor is installed on the seat cushion frame.
• The seat sliding motor is activated with the driver seat control unit.
• Slides the seat forward/backward by changing the rotation direction of sliding motor.
DTC Logic
INFOID:0000000001729816
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
STEP 1
Turn ignition switch ON.
>> 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
NOTE:
First perform diagnosis for B2126 or B2127 if B2126 or B2127 is detected.
Diagnosis Procedure
INFOID:0000000001729817
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-38, "Intermittent Incident"
.
2.
REPLACE DRIVER SEAT CONTROL UNIT
Replace driver seat control unit. Refer to
SE-164, "Removal and Installation"
>> INSPECTION END
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
POWER SUPPLY AND GROUND CIRCUIT
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< COMPONENT DIAGNOSIS >
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POWER SUPPLY AND GROUND CIRCUIT
AUTOMATIC DRIVE POSITIONER CONTROL UNIT
AUTOMATIC DRIVE POSITIONER CONTROL UNIT : Diagnosis Procedure
INFOID:0000000001694221
NOTE:
Do not disconnect the battery negative terminal and the driver seat control unit connector until DTC is con-
firmed with CONSULT-III.
1.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Check voltage between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>>
Check the following.
• Repair or replace harness between driver seat control unit and fuse block (J/B).
• Circuit breaker
2.
CHECK GROUND CIRCUIT
Check continuity between the automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES
>> Automatic drive positioner control unit power supply and ground circuit are OK.
NO
>> Repair or replace harness between automatic drive positioner control unit and ground.
AUTOMATIC DRIVE POSITIONER CONTROL UNIT : Special Repair Requirement
INFOID:0000000001694222
1.
PERFORM ADDITIONAL SERVICE
Perform additional service when removing battery negative terminal.
>> Refer to
SE-7, "ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL :
.
DRIVER SEAT CONTROL UNIT
DRIVER SEAT CONTROL UNIT : Diagnosis Procedure
INFOID:0000000001694217
NOTE:
Do not disconnect the battery negative terminal and the driver seat control unit connector until DTC is con-
firmed with CONSULT-III.
1.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Check voltage between driver seat control unit harness connector and ground.
Terminals
Voltage (V)
(Approx.)
(+)
(–)
Automatic drive positioner control
unit connector
Terminal
M52
34
Ground
Battery voltage
39
Automatic drive positioner control
unit connector
Terminal
Ground
Continuity
M52
40
Existed
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