2014 NISSAN TEANA power steering

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
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

STC-22
< DTC/CIRCUIT DIAGNOSIS >
C1143 STEERING ANGLE SENSOR
DTC/CIRCUIT DIAGNOSIS
C1143 STEERING ANGLE SENSOR
DTC LogicINFOID:0000000009460356
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 PS self-diagnosis.
Is DTC C1143 detected?
YES >> Proceed to diagnosis procedure. Refer to STC-22, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009460357
1.CHECK STEERING ANGLE SENSOR CIRCUIT
Check steering angle sensor circuit. Refer to BRC-88, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace malfunctioning component.
2.CHECK TERMINALS AND HARNESS CONNECTORS
Check the power steering control module pin termi nals for damage or loose connection with harness connec-
tor.
Is the inspection result normal?
YES >> Power steering control module is malfunctioni ng. Replace power steering oil pump assembly.
Refer to ST-38, "Removal and Installation"
.
NO >> Repair or replace malfunctioning component.
DTC Display item Malfunction detected condition Possible cause
C1143 ST ANG SEN CIRCUIT When a malfunction is detected in steering angle
sensor. • Harness or connector
• Steering angle sensor
• Power steering control mod-
ule
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

C1601 BATTERY POWER SUPPLYSTC-23
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
H I
J
K L
M A
B
STC
N
O P
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

C1601 BATTERY POWER SUPPLYSTC-25
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
H I
J
K L
M A
B
STC
N
O P
5. Check continuity between power steering control module harness connector terminal and ground.
Is the inspection result normal?
YES >> Perform the trouble diagnosis for i gnition power supply circuit. Refer to PG-19, "Wiring Diagram
— Ignition Power Supply —".
NO >> Repair or replace the malfunctioning component.
6.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 malfunctioni ng. Replace steering oil pump assembly. Refer to
ST-38, "Removal and Installation"
.
NO >> Repair or replace the malfunctioning component.
Power steering cont rol module IPDM E/R
Continuity
Connector Terminal Connector Terminal
E59 5 E63 19 Yes
Power steering control module
—Continuity
Connector Terminal
E59 5 Ground No
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

STC-26
< DTC/CIRCUIT DIAGNOSIS >
C1602 NO TUNING SET
C1602 NO TUNING SET
DTC LogicINFOID:0000000009460360
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
“C1602” detected?
YES >> Proceed to diagnosis procedure. Refer to STC-26, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009460361
1.PERFORM SELF-DIAGNOSIS
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Erase self-diagnostic results for “EPS”.
3. Turn the ignition switch OFF and wait for at least 10 seconds.
4. Perform self-diagnosis for “EPS”.
Is DTC
“C1602” detected?
YES >> Power steering motor is malfunctioning. Replace power steering oil pump assembly. Refer to ST-
38, "Removal and Installation".
NO >> Check pin terminal and connection of each harness connector for malfunctioning conditions.
DTC Display item Malfunction detected condition Possible cause
C1602 NO TUNING SET Configration is not finished. • Harness or connector
• Power steering control mod-
ule
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

C1606 EPS MOTORSTC-27
< DTC/CIRCUIT DIAGNOSIS >
C
D E
F
H I
J
K L
M A
B
STC
N
O P
C1606 EPS MOTOR
DTC LogicINFOID:0000000009460362
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
“C1606” detected?
YES >> Proceed to diagnosis procedure. Refer to STC-27, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009460363
1.PERFORM SELF-DIAGNOSIS
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Erase self-diagnostic results for “EPS”.
3. Turn the ignition switch OFF and wait for at least 10 seconds.
4. Perform self-diagnosis for “EPS”.
Is DTC
“C1606” detected?
YES >> Power steering motor is malfunctioning. Replace power steering oil pump assembly. Refer to ST-
38, "Removal and Installation".
NO >> Check pin terminal and connection of each harness connector for malfunctioning conditions.
DTC Display item Malfunction detected condition Possible cause
C1606 EPS MOTOR When the motor driver malfunction of power steer-
ing control module or power steering control mod-
ule motor driver malfunction is detected. • Harness or connector
• Power steering control motor
• Power steering control mod- ule
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

STC-28
< DTC/CIRCUIT DIAGNOSIS >
C1607, C1608 POWER STEERING CONTROL MODULE
C1607, C1608 POWER STEERING CONTROL MODULE
DTC LogicINFOID:0000000009460364
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
“C1607” or “C1608” detected?
YES >> Proceed to diagnosis procedure. Refer to STC-28, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009460365
1.PERFORM SELF-DIAGNOSIS
With CONSULT
1. Turn the ignition switch OFF to ON.
2. Erase self-diagnostic results for “EPS”.
3. Turn the ignition switch OFF and wait for at least 10 seconds.
4. Perform self-diagnosis for “EPS”.
Is DTC
“C1607” or “C1608” detected?
YES >> Power steering control module is malfunctioni ng. Replace power steering oil pump assembly.
Refer to ST-38, "Removal and Installation"
.
NO >> Check pin terminal and connection of each harness connector for malfunctioning conditions.
DTC Display item Malfunction detected condition Possible cause
C1607 EEPROM When the memo
ry (EEPROM) system malfunction is
detected in power steering control module. Power steering control module
C1608 CONTROL UNIT When the internal malfunction is detected in power
steering control module.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM