Infiniti FX35, FX50 (S51). Manual — part 1618
E-SUS CONTROL UNIT
SCS-57
< ECU DIAGNOSIS INFORMATION >
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Fail-safe
INFOID:0000000005236213
Continuous Damping Control system
• When detecting any malfunction in each component of the system, it enters the fail-safe status.
• The damping force is simultaneously maintained at approximately the intermediate level between the maxi-
mum and the minimum values, when entering the fail-safe status.
• Even if the switch is operated in the fail-safe status, lamp illuminates in SPORT mode or AUTO mode.
JCEWA0170GB
SCS-58
< ECU DIAGNOSIS INFORMATION >
E-SUS CONTROL UNIT
DTC Inspection Priority Chart
INFOID:0000000005236214
When multiple DTCs are detected simultaneously, check one by one depending on the following priority list.
DTC Index
INFOID:0000000005236215
Priority
Priority order item (DTC)
1
• U1000 CAN COMM CIRCUIT
• U1010 CONTROL UNIT (CAN)
2
Other than the above
DTC
Display Items
Reference
C1D01
VEHICLE SPEED SIG
C1D03
ST ANGLE SPEED SIG
C1D05
REQST TRQ SIG
C1D07
STOP LAMP SW SIG
C1D09
BRK FLD PRESS SIG
C1D0B
FL WHL VER G-SEN
C1D0C
FR WHL VER G-SEN
C1D0D
FL BDY VER G-SEN
C1D10
F VERTICAL G-SEN
C1D11
R VERTICAL G-SEN
C1D12
FR ACTUATOR SIG
C1D13
FL ACTUATOR SIG
C1D14
RR ACTUATOR SIG
C1D15
RL ACTUATOR SIG
C1D16
CONTROL UNIT
C1D18
IGN VOLT
C1D23
C/U REPRO ERROR
U1000
CAN COMM CIRCUIT
U1010
CONTROL UNIT (CAN)
SPORT MODE INDICATOR LAMP DOES NOT TURN ON
SCS-59
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
SPORT MODE INDICATOR LAMP DOES NOT TURN ON
Description
INFOID:0000000005549550
Sport mode indicator lamp does not turns ON when mode select switch (E-SUS mode select) is operated to
SPORT mode.
Diagnosis Procedure
INFOID:0000000005549551
1.
CHECK SPORT MODE INDICATOR LAMP
Perform the trouble diagnosis of sport mode indicator lamp. Refer to
.
Is the inspection result normal?
YES
>> Check that there is no malfunction in each harness connector pin terminal or disconnection.
NO
>> Repair or replace the specific malfunctioning part.
SCS-60
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005588464
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precautions for terminology
INFOID:0000000005236219
The Continuous Damping Control is the trademark owned by ThyssenKrupp ZF Sachs AG.
Precautions for diagnosis
INFOID:0000000005236220
When disconnecting the harness connector from E-SUS control unit, disconnect it only after checking that the
lock lever on the harness connector is opened.
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