engine NISSAN TEANA 2014 Service Manual

C1601 BATTERY POWER SUPPLYSTC-23
< DTC/CIRCUIT DIAGNOSIS >
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C1601 BATTERY POWER SUPPLY
DTC LogicINFOID:0000000009460358
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
“C1601” detected?
YES >> Proceed to diagnosis procedure. Refer to STC-23, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009460359
Regarding Wiring Diagram information, refer to STC-14, "Wiring Diagram".
1.CHECK POWER STEERING CONTROL MODULE GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect power steering control module harness connector.
3. Check continuity between power steering control module harness connector terminal and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair open circuit or short to ground or short to power in harness or connectors, and repair or
replace the malfunctioning component.
2.CHECK POWER STEERING CONTROL MO DULE POWER SUPPLY CIRCUIT (1)
1. Check voltage between power steering control module harness connector terminals and ground.
2. Turn ignition switch ON. CAUTION:
Never start the engine.
3. Check voltage between power steering control module harness connector terminals and ground.
DTC Display item Malfunction detected condition Possible cause
C1601 BATTERY VOLT When a power supply voltage to the power steer-
ing control module is maintained at 18.5 V or more
or at less than 8.5 V continuously for 0.5 seconds
or more. • Harness or connector
• Power steering control mod-
ule
•Fuse
• Battery power supply circuit
•Battery
Power steering control module
—Continuity
Connector Terminal
E60 2 Ground Yes
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

STC-24
< DTC/CIRCUIT DIAGNOSIS >
C1601 BATTERY POWER SUPPLY
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (2)
1. Turn ignition switch OFF.
2. Check the 100A fusible link (D).
3. Disconnect battery terminal with fusible link harness connector.
4. Check continuity between power steering contro l module harness connector terminal and battery terminal
with fusible link harness connector terminal.
5. Check continuity between power steering c ontrol module harness connector terminal and ground.
Is the inspection result normal?
YES >> Perform the trouble diagnosis for battery power supply circuit. Refer to PG-8, "Wiring Diagram —
Battery Power Supply —".
NO >> Repair or replace the malfunctioning component.
4.CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (3)
1. Check voltage between power steering control module harness connector terminals and ground.
2. Turn ignition switch ON. CAUTION:
Never start the engine.
3. Check voltage between power steering control module harness connector terminals and ground.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.CHECK POWER STEERING CONTROL MODULE POWER SUPPLY CIRCUIT (4)
1. Turn ignition switch OFF.
2. Check the 10A fuse No. 49 in the IPDM E/R.
3. Disconnect IPDM E/R harness connector E63.
4. Check continuity between power steering control module harness connector terminal and IPDM E/R har-
ness connector terminal.
Power steering control module — Ignition Voltage
Connector Terminal
E60 1 Ground ON Battery voltage
Power steering control module Batte ry terminal with fusible link
Continuity
Connector Terminal Connector Terminal
E60 1 E5 3 Yes
Power steering control module — Ignition Continuity
Connector Terminal
E60 1 Ground ON No
Power steering control module —Voltage
Connector Terminal
E59 5 Ground 0 V
Power steering control module —Voltage
Connector Terminal
E59 5 Ground Battery voltage
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP
STC-31
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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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HYDRAULIC PUMP ELECTRIC POWER STEERING WARNING LAMP DOES
NOT TURN OFF
STC-33
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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-34
< SYMPTOM DIAGNOSIS >
STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT
STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHT
Diagnosis ProcedureINFOID:0000000009460376
1.PERFORM SELF-DIAGNOSIS
With CONSULT
Perform “EPS” self-diagnosis.
Is a malfunctioning system displayed?
YES >> Check malfunctioning system. Refer to STC-13, "DTC Index".
NO >> GO TO 2.
2.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (1)
With CONSULT
1. Start the engine. CAUTION:
Never drive the vehicle.
2. Turn the steering wheel until it stops.
3. Select “MTR ASSIST” in “DATA MONITOR” of “EPS”.
Is the display value
“100%”?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (2)
With CONSULT
1. Select “C/U TEMP” and “C/U TEMP A” in “DATA MONITOR” of “EPS”.
2. Stop the system until the DATA MONITOR display value drops to “90 °C (194 °F)” or less.
3. Check whether symptom continues.
Did symptom continue?
YES >> GO TO 4.
NO >> This occurs because the protection function lowers the assist force. It is not a system malfunction.
Inspection End.
4.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (3)
With CONSULT
1. Turn the steering wheel to the straight -ahead position. (There is no steering force)
2. Select “BATTERY VOLT” in “DATA MONITOR” of “EPS”.
Is the display value
“10.5 V” or more?
YES >> GO TO 5.
NO >> Check the battery power system. Refer to STC-23, "Diagnosis Procedure"
.
5.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (4)
With CONSULT
Select “ESTM VHCL SPD” in “DATA MONITOR” of “EPS”.
*: This may not agree with the speedometer indication imm ediately after the ignition switch is turned ON. This
is not a malfunction.
Is the check result normal?
YES >> GO TO 6.
NO >> Check the combination meter, ABS actuator and electric unit (control unit). Refer to MWI-18,
"CONSULT Function (METER/M&A)" and BRC-33, "CONSULT Function (ABS)".
Monitor item Test condition Display value
ESTM VHCL SPD When stopped 0.00 km/h or mph
While driving Approximately equal to the in-
dication on speedometer
*
(Inside of ±10%)
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STEERING WHEEL TURNING FORCE IS HEAVY OR LIGHTSTC-35
< SYMPTOM DIAGNOSIS >
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6.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (5)
With CONSULT
Select “STR ANG SPD” in “DATA MONITOR” of “EPS”.
Is the check result normal?
YES >> GO TO 7.
NO >> Check the steering angle sensor. Refer to STC-22, "Diagnosis Procedure"
.
7.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (6)
With CONSULT
Select “ENGINE STATUS” in “DATA MONITOR” of “EPS”.
Is the display value
“RUN”?
YES >> GO TO 8.
NO >> Check the ECM. Refer to EC-77, "CONSULT Function"
.
8.CHECK THE STEERING FORCE
Check the steering force. Refer to STC-36, "Diagnosis Procedure"
.
Is the check result normal?
YES >> Inspection End.
NO >> It is possible that there is a mechani cal malfunction. Check the steering system.
Monitor item Test condition Display value
STR ANG SPD The steering wheel is not
steered. Approx. 0.0 deg/s
The steering wheel is steered. Displays steering angle speed
(deg/s)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

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".
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)
STC-37
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UNBALANCE STEERING WHEEL TU RNING FORCE (TORQUE VARIA-
TION)
Diagnosis ProcedureINFOID:0000000009460378
1.PERFORM SELF-DIAGNOSIS
With CONSULT
Perform “EPS” self-diagnosis.
Is a malfunctioning system displayed?
YES >> Check malfunctioning system. Refer to STC-13, "DTC Index".
NO >> GO TO 2.
2.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (1)
With CONSULT
1. Start the engine. CAUTION:
Never drive the vehicle.
2. Turn the steering wheel until it stops.
3. Select “MTR ASSIST” in “DATA MONITOR” of “EPS”.
Is the display value
“100%”?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (2)
With CONSULT
1. Select “C/U TEMP” and “C/U TEMP A” in “DATA MONITOR” of “EPS”.
2. Stop the system until the DATA MONITOR display value drops to “90 °C (194 °F)” or less.
3. Check whether symptom continues.
Did symptom continue?
YES >> GO TO 4.
NO >> This occurs because the protection function lowers the assist force. It is not a system malfunction.
Inspection End.
4.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (3)
With CONSULT
1. Turn the steering wheel to the straight -ahead position. (There is no steering force.)
2. Select “BATTERY VOLT” in “DATA MONITOR” of “EPS”.
Is the display value
“10.5 V” or more?
YES >> GO TO 5.
NO >> Check the battery power system. Refer to STC-23, "Diagnosis Procedure"
.
5.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (4)
With CONSULT
Select in “ESTM VHCL SPD” in “DATA MONITOR” of “EPS”.
*: This may not agree with the speedometer indication immediately after the ignition switch is turned ON. This
is not a malfunction.
Is the check result normal?
YES >> GO TO 6.
Monitor item Test condition Display value
ESTM VHCL SPD When stopped 0.00 km/h or mph
While driving Approximately equal to the in-
dication on speedometer
*
(Inside of ±10%)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

STC-38
< SYMPTOM DIAGNOSIS >
UNBALANCE STEERING WHEEL TURNING FORCE (TORQUE VARIATION)
NO >> Check the combination meter, ABS actuator and electric unit (control unit). Refer to MWI-18,
"CONSULT Function (METER/M&A)" and BRC-33, "CONSULT Function (ABS)".
6.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (5)
With CONSULT
Select “STR ANG SPD” in “DATA MONITOR” of “EPS”.
Is the check result normal?
YES >> GO TO 7.
NO >> Check the steering angle sensor. Refer to STC-22, "Diagnosis Procedure"
.
7.CHECK THE POWER STEERING CONTROL MODULE SIGNAL (6)
With CONSULT
Select “ENGINE STATUS” in “DATA MONITOR” of “EPS”.
Is the display value
“RUN”?
YES >> GO TO 8.
NO >> Check the ECM. Refer to EC-77, "CONSULT Function"
.
8.CHECK STEERING COLUMN AND STEERING GEAR
Check the steering column assembly and steering gear assembly.
• Steering column assembly. Refer to ST-46, "Steering Column"
.
• Steering gear assembly. Refer to ST-47, "Power Steering Gear"
.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace malfunctioning component.
9.CHECK STEERING WHEEL TURNING FORCE
Check the steering wheel turning force. Refer to STC-34, "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".
Monitor item Test condition Display value
STR ANG SPD The steering wheel is not turn-
ing. Approx. 0.0 deg/s
The steering wheel is being
turned. Displays steering angle speed
(deg/s)
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STR-1
ENGINE
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SECTION STR
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CONTENTS
STARTING SYSTEM
PRECAUTION ................ ...............................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
PREPARATION ............................................3
PREPARATION .............................................. .....3
Special Service Tool ........................................... ......3
Commercial Service Tool ..........................................3
SYSTEM DESCRIPTION ..............................4
COMPONENT PARTS ................................... .....4
QR25DE ................................................................. ......4
QR25DE : Component Parts Location ......................4
QR25DE : Component Description ..........................4
VQ35DE ................................................................. ......4
VQ35DE : Component Parts Location ......................5
VQ35DE : Component Description ...........................5
SYSTEM ..............................................................6
System Diagram .................................................. ......6
System Description ...................................................6
Component Description ............................................6
WIRING DIAGRAM .......................................7
STARTING SYSTEM ...................................... .....7
Wiring Diagram ................................................... ......7
BASIC INSPECTION ...................................12
DIAGNOSIS AND REPAIR WORKFLOW ........12
Work Flow (With GR8-1200 NI) ........................... ....12
Work Flow (Without GR8-1200 NI) ..........................16
DTC/CIRCUIT DIAGNOSIS .........................18
B TERMINAL CIRCUIT .....................................18
Description ........................................................... ....18
Diagnosis Procedure ...............................................18
S CONNECTOR CIRCUIT .................................20
Description ...............................................................20
Diagnosis Procedure ...............................................20
SYMPTOM DIAGNOSIS ..............................21
STARTING SYSTEM .........................................21
Symptom Table ................................................... ....21
REMOVAL AND INSTALLATION ...............22
STARTER MOTOR ...........................................22
QR25DE ................................................................. ....22
QR25DE : Exploded View .......................................22
QR25DE : Removal and Installation ........................22
VQ35DE ................................................................. ....23
VQ35DE : Exploded View ........................................23
VQ35DE : Removal and Installation ........................23
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .............................................
25
STARTER MOTOR ...........................................25
Starter .................................................................. ....25
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM