Nissan Leaf. Instruction — part 1109
INSPECTION AND ADJUSTMENT
SRC-37
< BASIC INSPECTION >
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INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000010122789
WARNING:
Always perform zero point reset using CONSULT when removing and installing the front passenger
seat or servicing the occupant classification system (OCS). If zero point reset is not performed, the
OCS may not operate normally, which may increase the risk of serious injury in a collision.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000010122790
WORK PROCEDURE WHEN REPLACING OCS CONTROL UNIT
1.
PERFORM ZERO POINT RESET
Perform zero point reset. Refer to
SRC-37, "ZERO POINT RESET : Special Repair Requirement"
.
>> Inspection End.
ZERO POINT RESET
ZERO POINT RESET : Description
INFOID:0000000010122791
Zero point reset is an initializing procedure for the OCS (weight) sensors that must be performed using CON-
SULT when removing and installing passenger seat or servicing the OCS system. If zero point reset is not per-
formed, the initialization is incomplete and OCS may not operate normally.
NOTE:
• When reinstalling the passenger seat, the initial value for the OCS sensors may change, and the OCS may
not operate normally.
• When zero point reset is performed after removal and installation of passenger seat, CONSULT displays
“complete”.
ZERO POINT RESET : Special Repair Requirement
INFOID:0000000010122792
1.
PERFORM ZERO POINT RESET
1. Perform preliminary checks:
NOTE:
• Level the vehicle
• Minimize vibrations near the vehicle
• Remove any objects on passenger seat
• Do not touch the vehicle during zero point reset
2. Select START on “Zero point reset function” from, “Work support” of “OCCUPANT DETECTION”.
3. “Zero point reset” starts.
>> GO TO 2.
2.
CONFIRM RESET
1. Check that “Complete” is displayed on “Zero point reset current status”.
CAUTION:
• “Complete” may be displayed if the seat has been reinstalled, or “zero point reset” has already been
performed.
• “Incomplete” may be displayed if a new seat is installed.
• Air bag warning lamp blinks in user mode if zero point reset is “incomplete”.
Is zero point reset status “complete”?
YES
>> Print out “Zero point reset current status” screen. Inspection end.
NO
>> Recheck the preliminary check items and perform zero point reset again.
SRC-38
< BASIC INSPECTION >
INTERMITTENT INCIDENT
INTERMITTENT INCIDENT
Inspection Procedure
INFOID:0000000010122793
INTERMITTENT TROUBLE
An intermittent incident may have occurred in the past but is not being detected currently. This DTC will not be
detected on SELF-DIAG [CURRENT], but may be viewed on SELF-DIAG [PAST] if the DTC has not been
erased.
U1000 CAN COMM CIRCUIT
SRC-39
< DTC/CIRCUIT DIAGNOSIS >
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DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DTC Description
INFOID:0000000010876518
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.
CAN Communication Signal Chart. Refer to
LAN-37, "CAN COMMUNICATION SYSTEM : CAN Communica-
DTC LOGIC
POSSIBLE CAUSE
CAN communication system
FAIL-SAFE
—
Diagnosis Procedure
INFOID:0000000010876519
1.
PERFORM SELF DIAGNOSTIC
1. Turn power switch ON and wait for 2 seconds or more.
2. Check “SELF-DIAG [CAN]” in “special function” of “AIR BAG” using CONSULT.
Is DTC “U1000-01” displayed?
YES
>> Refer to
.
NO
>> Refer to
GI-53, "Intermittent Incident"
.
DTC
CONSULT screen items
(Trouble diagnosis content)
DTC detecting condition
U1000–01
CAN COMM CIRCUIT
[CAN communication circuit]
When air bag diagnosis sensor unit cannot communicate CAN communication signal
continuously for 2 seconds or more.
SRC-40
< DTC/CIRCUIT DIAGNOSIS >
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DTC Description
INFOID:0000000010876965
DTC LOGIC
POSSIBLE CAUSE
Air bag diagnosis sensor unit
FAIL-SAFE
—
Diagnosis Procedure
INFOID:0000000010876966
1.
REPLACE AIR BAG DIAGNOSIS SENSOR UNIT
When DTC “U1010–49” is detected, replace air bag diagnosis sensor unit.
>> Replace air bag diagnosis sensor unit. Refer to
SR-38, "Removal and Installation"
.
DTC
CONSULT screen items
(Trouble diagnosis content)
DTC detecting condition
U1010–49
CONTROL UNIT (CAN)
[Control unit (CAN)]
Air bag diagnosis sensor unit detected internal CAN communication circuit malfunction.
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