warning NISSAN TEANA 2014 Service Manual

STC-12
< ECU DIAGNOSIS INFORMATION >
POWER STEERING CONTROL MODULE
*4: This may not agree with the speedometer indication immediately after the ignition switch is turned ON. This
is not a malfunction.
TERMINAL LAYOUT
PHYSICAL VALUES
Fail-safeINFOID:0000000009460349
When an error occurs in the hydraulic pump electric pow er steering system, fail-safe brings the system to a
halt (manual steering) or restricted (constant steering assi st level) state. When the system is in a halt state,
fail-safe turns ON the hydraulic pump electric power steer ing warning lamp to warn the driver that the hydrau-
lic pump electric power steering system is in the manual steering state.
Protection FunctionINFOID:0000000009460350
• When the steering wheel is operated repeatedly or turned all the way for a long period during parking or low
speed driving, the function of the hydraulic pump elec tric power steering system becomes limited to prevent
the system from overheating. If the steering wheel is operated further more, the hydraulic pump electric
power steering system stops and the hydraulic pump el ectric power steering system warning lamp may be
turned ON. In this case, the steering wheel operation temporarily becomes hard. This is not a malfunction.
When the engine is turned OFF (ignition switch OFF) and steering operation is stopped for a while, the tem-
perature of the hydraulic pump electric power steeri ng system decreases and the steering operation returns
to normal after restarting the engine.
JSGIA0835ZZ
Te r m i n a l N o .
(Wire Color) Description
Condition Value
+ − Signal name Input/Output
1
(W) Ground Battery power supply Input Always Battery Voltage
2
(B) Ground Ground — Always 0 V
5
(BR) Ground Ignition power supply Input Ignition switch: ON Battery Voltage
Ignition switch: OFF 0 V
7
(P) — CAN-L Input/Output — —
8
(L) — CAN-H Input/Output — —
DTC Fail-safe condition
C1143 Certain steering assist force
C1601 Manual steering state
C1606 Manual steering state
C1607 Certain steering assist force
C1608 Manual steering state
U1000 Normal control
NOTE:
If the cause is in a different ECU, the state changes to fixed steering assist force.
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POWER STEERING CONTROL MODULESTC-13
< ECU DIAGNOSIS INFORMATION >
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• Then, the hydraulic pump electric power steering syste m warning lamp turns OFF. If the system is OFF
under the protection state, the hydraulic pump electr ic power steering system warning lamp turns ON to
warn that the system is in the manual steering state. (This is not a system malfunction.) In addition, the fol-
lowing DTC remains to distinguish from malfunction.
DTC Inspection Priority ChartINFOID:0000000009460351
When multiple DTCs are detected simultaneously, c heck one by one depending on the following priority list.
DTC IndexINFOID:0000000009460352
NOTE:
If two or more DTCs are detected, refer to STC-13, "DTC Inspection Priority Chart"
.
DTC vehicle condition
C160A The system temporarily enters the manual steering state. (This is not a hydraulic pump electric
power steering system malfunction.)
Priority Priority order item (DTC)
1 • C1601 BATTERY VOLT
• C1602 NO TUNING SET
• C1606 EPS MOTOR
• C1608 CONTROL UNIT
2 • C1607 EEPROM
3 • C160A HEAT PROTECTION
4 • C1143 ST ANG SEN CIRCUIT
• U1000 CAN COMM CIRCUIT
DTC Items (CONSULT screen terms) Reference
C1143 ST ANG SEN CIRCUIT STC-22, "DTC Logic"
C1601 BATTERY VOLT STC-23, "DTC Logic"
C1602 NO TUNING SETSTC-26, "DTC Logic"
C1606 EPS MOTORSTC-27, "DTC Logic"
C1607 EEPROMSTC-28, "DTC Logic"
C1608 CONTROL UNITSTC-28, "DTC Logic"
C160A HEAT PROTECTION STC-29, "DTC Logic"
U1000 CAN COMM CIRCUITSTC-30, "DTC Logic"
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STC-20
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
YES >> GO TO 6.
NO >> Check harness and connectors based on the information obtained by interview.
6.REPAIR OR REPLACE THE MALFUNCTIONING COMPONENTS.
• Repair or replace the malfunctioning components.
• Reconnect part or connector after repairing or replacing.
• When DTC is detected, erase self-diagnostic results for “EPS”.
>> GO TO 8.
7.IDENTIFY THE MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS
Estimate the malfunctioning system based on symptom diagnosis and perform inspection.
Can the malfunctioning system be identified?
YES >> GO TO 8.
NO >> Check harness and connectors based on the information obtained by interview.
8.FINAL CHECK
With CONSULT
1. Check the reference value for power steering control module.
2. Recheck the symptom and check that sympto m is not reproduced on the same conditions.
Is the symptom reproduced?
YES >> GO TO 3.
NO >> Inspection End.
Diagnostic Work SheetINFOID:0000000009460355
Description
• In general, customers have their own criteria for a pr oblem. Therefore, it is important to understand the
symptom and status well enough by asking the customer about his/her concerns carefully. To systemize all
the information for the diagnosis, prepare the interview sheet referring to the interview points.
• In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.
Interview sheet sample
Interview sheet
Customer
name MR/MSRegistration
number Initial year
registration
Vehicle type VIN
Storage date Engine Mileage km (Mile)
Symptom †
The steering wheel position (center) is in the wrong position.
† Warning lamp turns on.
† Noise †Vibration
† Others
( )
First occurrence †Recently †Others ( )
Frequency of occurrence †Always †Under a certain conditions of †Sometimes (time(s)/day)
Climate con-
ditions †
Irrelevant
Weather †Fine †Cloud †Rain †Snow †Others ( )
Temperature †Hot †Warm †Cool †Cold †Temperature [Approx. °C ( °F)]
Relative humidity †High †Moderate †Low
Road conditions †
Urban area †Suburb area †High way
† Mountain road (uphill or down hill) †Rough road
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C160A HEAT PROTECTIONSTC-29
< DTC/CIRCUIT DIAGNOSIS >
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C160A HEAT PROTECTION
DTC LogicINFOID:0000000009460366
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
>> GO TO 2.
2.DTC REPRODUCTION PROCEDURE
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “EPS” self-diagnosis.
Is DTC
“C160A” detected?
YES >> Go to STC-19, "Work Flow".
NO >> Inspection End.
DTC Display item Malfunction detected condition Possible cause
C160A HEAT PROTECTION When the steering wheel is operated excessively
and the interior temperature of the power steering
system reaches 118 °C (244.4 °F) or more. (Protec-
tion function)
NOTE:
Although the hydraulic pump electric power steering
system warning lamp turns ON, this is not a system
malfunction. The state returns to normal after stop-
ping steering operation and waiting until the system
interior temperature drops to 90 °C (194 °F) or less. The protection of the hydraulic
pump electric power steering sys-
tem
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HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP
STC-31
< DTC/CIRCUIT DIAGNOSIS >
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HYDRAULIC PUMP ELECTRIC PO WER STEERING WARNING LAMP
Component Function CheckINFOID:0000000009460370
1.CHECK THE ILLUMINATION OF THE HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING
LAMP
Check that the hydraulic pump electric power steering warning lamp turns ON when ignition switch turns ON.
Then, hydraulic pump electric power steering warn ing lamp turns OFF after the engine is started.
Is the inspection result normal?
YES >> Inspection End.
NO >> Perform trouble diagnosis. Refer to STC-31, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009460371
1.PERFORM SELF-DIAGNOSIS
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Perform “EPS” self-diagnosis.
Is any DTC detected?
YES >> Check the DTC. Refer to STC-13, "DTC Index".
NO >> GO TO 2.
2.CHECK HYDRAULIC PUMP ELECTRIC PO WER STEERING WARNING LAMP SIGNAL
With CONSULT
1. Turn the ignition switch ON.
2. Select “WARNING LAMP” in “DATA MONITOR” of “EPS”.
3. Check that the item in “DATA MONITOR” is “On”. CAUTION:
The engine should not be running for step 3.
4. Start the engine. CAUTION:
Never drive the vehicle during the test.
5. Check that the item in “DATA MONITOR” is “Off”.
Is the inspection result normal?
YES >> Perform the trouble diagnosis for combinat ion meter power supply circuit. Refer to MWI-58,
"COMBINATION METER : Diagnosis Procedure".
NO >> GO TO 3.
3.CHECK TERMINALS AND HARNESS CONNECTORS
Check the power steering control module pin terminal s for damage or loose connection with harness connec-
tor.
Is the inspection result normal?
YES >> Power steering control module is malfuncti oning. Replace power steering oil pump assembly.
Refer to ST-38, "Removal and Installation"
.
NO >> Repair or replace the malfunctioning component.
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STC-32
< SYMPTOM DIAGNOSIS >
HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP DOES NOT TURN ON
SYMPTOM DIAGNOSIS
HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP
DOES NOT TURN ON
DescriptionINFOID:0000000009460372
The hydraulic pump electric power steering warning lamp does not illuminate when the ignition switch is
turned ON (lamp check).
Diagnosis ProcedureINFOID:0000000009460373
1.CHECK THE HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP
Perform trouble diagnosis for the hydraulic pump electric power steering warning lamp system. Refer to STC-
31, "Diagnosis Procedure".
Is the inspection result normal?
YES >> Check that the pin terminals and t he connection of each connector are normal.
NO >> Repair or replace the malfunctioning components.
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HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP DOES
NOT TURN OFF
STC-33
< SYMPTOM DIAGNOSIS >
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HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP
DOES NOT TURN OFF
DescriptionINFOID:0000000009460374
Hydraulic pump electric power steering warning lamp does not turn OFF several seconds after engine started
Diagnosis ProcedureINFOID:0000000009460375
1.PERFORM SELF-DIAGNOSIS
With CONSULT
Perform “EPS” self-diagnosis.
Is any DTC detected?
YES >> Check the DTC. Refer to STC-13, "DTC Index".
NO >> GO TO 2.
2.CHECK HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP
Perform the trouble diagnosis of hydraulic pump el ectric power steering warning lamp. Refer to STC-31,
"Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunctioning components.
3.POWER STEERING CONT ROL MODULE POWER SUPPLY AND GROUND CIRCUIT
Perform the trouble diagnosis of power steering control module power supply and ground. Refer to STC-23,
"Diagnosis Procedure".
Is the inspection result normal?
YES >> Check that the pin terminals and t he connection of each connector are normal.
NO >> Repair or replace the malfunctioning components.
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STC-36
< SYMPTOM DIAGNOSIS >
UNBALANCE STEERING WHEEL TURNING FORCE AND RETURN BETWEEN
RIGHT AND LEFT
UNBALANCE STEERING WHEEL TU RNING FORCE AND RETURN BE-
TWEEN RIGHT AND LEFT
Diagnosis ProcedureINFOID:0000000009460377
1.CHECK THE ILLUMINATION OF THE HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING
LAMP
Check the hydraulic pump electric power steering warning lamp while engine is running.
Does the hydraulic pump electric power steering warning lamp turn OFF?
YES >> GO TO 2.
NO >> Refer to STC-33, "Diagnosis Procedure"
.
2.CHECK WHEEL ALIGNMENT
Check the wheel alignment. Refer to FSU-25, "Wheel Alignment (Unladen*
1)".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Adjustment of wheel alignment. Refer to FSU-25, "Wheel Alignment (Unladen*
1)".
3.CHECK STEERING WHEEL TURNING FORCE
Check the steering wheel turning force. Refer to STC-37, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> Inspection End.
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to STC-34, "Diagnosis
Procedure".
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STR-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951694
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, 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 NISS AN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses 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 Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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 three minutes before performing any service.
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PRECAUTIONSTM-9
< PRECAUTION > [CVT: RE0F10D]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951696
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service t he system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, 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 in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied 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 Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric 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 three mi nutes before performing any service.
Precaution for Procedure without Cowl Top CoverINFOID:0000000009463955
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc to prevent damage to
windshield.
Precaution for TCM and Tran saxle Assembly ReplacementINFOID:0000000009463956
CAUTION:
• To replace TCM, refer to TM-80, "Description"
.
• To replace transaxle assembly, refer to TM-81, "Description"
.
PIIB3706J
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