2008 NISSAN TEANA Service Manual

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Page 4433 of 5121

NISSAN TEANA 2008 Service Manual EPS SYSTEM
STC-5
< FUNCTION DIAGNOSIS >
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Component Parts LocationINFOID:0000000003893524
Component DescriptionINFOID:0000000003893525
1. Power steering solenoid valve 2

Page 4434 of 5121

NISSAN TEANA 2008 Service Manual STC-6
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
DescriptionINFOID:0000000003893526
Power supply to EPS system
Diagnosis ProcedureINFOI

Page 4435 of 5121

NISSAN TEANA 2008 Service Manual POWER STEERING SOLENOID VALVE
STC-7
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POWER STEERING SOLENOID VALVE
DescriptionINFOID:0000000003893528
Power steering solenoid valve controls the

POWER STEERING SOLENOID VALVE
STC-7
< COMPONENT DIAGNOSIS >
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POWER STEERING SOLENOID VALVE
DescriptionINFOID:0000000003893528
Power steering solenoid valve controls the power steering oil pressure in the gear housing assembly.
Diagnosis ProcedureINFOID:0000000003893529
1.CHECK POWER STEERING SOLENOID VALVE SIGNAL
1. Turn the ignition switch OFF.
2. Check voltage between power steering control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK HARNESS BETWEEN POWER STEERING SOLENOID VALVE AND POWER STEERING CON-
TROL UNIT
1. Turn the ignition switch OFF.
2. Disconnect power steering solenoid valve harness connector.
3. Disconnect power steering control unit harness connector.
4. Check the continuity between power steering solenoid valve harness connector and the power steering
control unit harness connector.
5. Check continuity between power steering control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.
3.CHECK POWER STEERING SOLENOID VALVE
Check power steering solenoid valve. Refer to STC-8, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace gear-sub assembly. Refer to ST-18, "
Exploded View".
4.CHECK TERMINALS AND HARNESS CONNECTORS
Check power steering control unit pin terminals for damage or loose connection with harness connector.
Check power steering solenoid valve pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
Power steering control unit
— Condition Voltage (Approx.)
Connector Terminal
M61 1 GroundVehicle speed: 0 km/h (0 MPH)
(Engine is running)4.4 – 6.6 V
Vehicle speed: 100 km/h (62 MPH) 2.4 – 3.6 V
Power steering solenoid valve Power steering control unit
Continuity
Connector Terminal Connector Terminal
E52 1 M61 1 Existed
E52 2 M61 5 Existed
Power steering control unit
—Continuity
Connector Terminal
M61 1
Ground Not existed
M61 5

Page 4436 of 5121

NISSAN TEANA 2008 Service Manual STC-8
< COMPONENT DIAGNOSIS >
POWER STEERING SOLENOID VALVE
YES >> INSPECTION END
NO >> Repair or replace damaged parts.
Component InspectionINFOID:0000000003893530
1.CHECK POWER STEERING SOLENOID VAL

Page 4437 of 5121

NISSAN TEANA 2008 Service Manual ENGINE SPEED SIGNAL CIRCUIT
STC-9
< COMPONENT DIAGNOSIS >
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ENGINE SPEED SIGNAL CIRCUIT
DescriptionINFOID:0000000003893531
ECM sends engine speed signal to power steerin

Page 4438 of 5121

NISSAN TEANA 2008 Service Manual STC-10
< COMPONENT DIAGNOSIS >
ENGINE SPEED SIGNAL CIRCUIT
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace ECM. Refer to EC-14, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT :
Descri

Page 4439 of 5121

NISSAN TEANA 2008 Service Manual VEHICLE SPEED SIGNAL CIRCUIT
STC-11
< COMPONENT DIAGNOSIS >
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VEHICLE SPEED SIGNAL CIRCUIT
DescriptionINFOID:0000000003893533
Combination meter sends vehicle speed signa

Page 4440 of 5121

NISSAN TEANA 2008 Service Manual STC-12
< COMPONENT DIAGNOSIS >
VEHICLE SPEED SIGNAL CIRCUIT
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace power steering control unit. Refer to STC-19, "
Exploded View".
5.CHECK TERMI

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