Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Nissan Altima 2006-2009 Approved TB Nissan Altima 2007 Hybrid STC

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STC

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STEERING

SECTION
STEERING CONTROL SYSTEM
STC B

E
CONTENTS
BASIC INSPECTION ................................... 3
. COMPONENT DIAGNOSIS ........................ 13
. F

DIAGNOSIS AND REPAIR WORKFLOW ......... 3
. C1601 BATTERY POWER SUPPLY ................ 13
Work Flow ................................................................ 3
. Description ..............................................................13
. STC
DTC Logic ...............................................................13
.
INSPECTION AND ADJUSTMENT .................... 5
. Diagnosis Procedure ..............................................13 .
ADDITIONAL SERVICE WHEN REPLACING Special Repair Requirement ...................................14 .
H
CONTROL UNIT ......................................................... 5
. C1604 TORQUE SENSOR ................................ 15
ADDITIONAL SERVICE WHEN REPLACING Description ..............................................................15
.
CONTROL UNIT : Description ................................. 5 . DTC Logic ...............................................................15
. I
ADDITIONAL SERVICE WHEN REPLACING Diagnosis Procedure ..............................................15 .
CONTROL UNIT : Special Repair Requirement ...... 5 Component Inspection ............................................17 .
ADDITIONAL SERVICE WHEN REPLACING Special Repair Requirement ...................................17 .
J
STEERING GEAR ASSEMBLY ................................. 5 . C1606 EPS MOTOR .......................................... 19
ADDITIONAL SERVICE WHEN REPLACING
Description ..............................................................19
.
STEERING GEAR ASSEMBLY : Description .......... 5 .
DTC Logic ...............................................................19
. K
ADDITIONAL SERVICE WHEN REPLACING
Diagnosis Procedure ..............................................19 .
STEERING GEAR ASSEMBLY : Special Repair
Component Inspection (EPS Motor) .......................21 .
Requirement ............................................................. 5
.
Component Inspection (EPS Motor Angle Sensor) L
EPS MOTOR ANGLE SENSOR INITIALIZATION ....22
AND TORQUE SENSOR CALIBRATION .................. 5 . Special Repair Requirement ...................................22 .
EPS MOTOR ANGLE SENSOR INITIALIZATION M
C1607 EEPROM ................................................ 23
AND TORQUE SENSOR CALIBRATION : De-
Description ..............................................................23
.
scription .................................................................... 5
.
DTC Logic ...............................................................23
.
EPS MOTOR ANGLE SENSOR INITIALIZATION
Diagnosis Procedure ..............................................23 . N
AND TORQUE SENSOR CALIBRATION : Spe-
Special Repair Requirement ...................................23 .
cial Repair Requirement ........................................... 5 .
C1608 CONTROL UNIT .................................... 25
FUNCTION DIAGNOSIS .............................. 7
. Description ..............................................................25
. O
EPS SYSTEM ..................................................... 7
. DTC Logic ...............................................................25
.
System Diagram ....................................................... 7
. Diagnosis Procedure ..............................................25 .
System Description .................................................. 7
. Special Repair Requirement ...................................25 . P
Component Parts Location ....................................... 8
. C1609 VEHICLE SPEED SIGNAL .................... 27
Component Description ............................................ 9
.
Description ..............................................................27
.
DIAGNOSIS SYSTEM (EPS CONTROL UNIT) DTC Logic ...............................................................27
.
....10 Diagnosis Procedure ..............................................27 .
Special Repair Requirement ...................................28 .
CONSULT-III Function (EPS) ................................ 10
.

Revision: May 2007 STC-1 2007 Altima Hybrid
C1613 TORQUE SENSOR CALIBRATION ..... 29
. Diagnosis Procedure .............................................. 41
.
Description ............................................................. 29
.
DTC Logic .............................................................. 29
. ECU DIAGNOSIS ....................................... 43
Diagnosis Procedure ............................................. 29 .
EPS CONTROL UNIT ....................................... 43
.
Special Repair Requirement .................................. 30 .
Reference Value .................................................... 43 .
C16A0 HV ECU ................................................. 31
. Wiring Diagram -- ELECTRONICALLY CON-
Description ............................................................. 31
. TROLLED POWER STEERING SYSTEM -- ........ 44 .
DTC Logic .............................................................. 31
. Fail Safe ................................................................. 50
.
Diagnosis Procedure ............................................. 31 . DTC Inspection Priority Chart ................................ 51 .
Special Repair Requirement .................................. 32 . DTC Index .............................................................. 51
.

C16A1 EPS DC/DC CONVERTER ................... 33
. SYMPTOM DIAGNOSIS ............................ 53
Description ............................................................. 33
.
DTC Logic .............................................................. 33
.
EPS SYSTEM SYMPTOMS .............................. 53
.
Symptom Table ...................................................... 53
.
Diagnosis Procedure ............................................. 33 .
Component Inspection ........................................... 35 . NORMAL OPERATING CONDITION ............... 55
.
Special Repair Requirement .................................. 36 . Description ............................................................. 55
.
C16A2 EPS MOTOR ANGLE SENSOR INI- PRECAUTION ............................................ 56
TIALIZATION .................................................... 37
.
Description ............................................................. 37
. PRECAUTIONS ................................................ 56
.
DTC Logic .............................................................. 37
. Precautions For High-Voltage System ................... 56 .
Diagnosis Procedure ............................................. 37 . Precautions for Inspecting the Hybrid Control Sys-
Special Repair Requirement .................................. 38 . tem ......................................................................... 56
.
Precaution for Supplemental Restraint System
U0129 BRAKE ECU COMMUNICATION ......... 39
. (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
Description ............................................................. 39
. SIONER" ................................................................ 56
.
DTC Logic .............................................................. 39
. Service Notice or Precautions for EPS System ..... 57 .
Diagnosis Procedure ............................................. 39 .
Special Repair Requirement .................................. 39 . ON-VEHICLE REPAIR ............................... 58
U0293 HV ECU COMMUNICATION ................. 40
. EPS CONTROL UNIT ....................................... 58
.
Description ............................................................. 40
. Exploded View ....................................................... 58
.
DTC Logic .............................................................. 40
. Removal and Installation ........................................ 58
.
Diagnosis Procedure ............................................. 40 .
Special Repair Requirement .................................. 40 . EPS DC/DC CONVERTER ............................... 60
.
Exploded View ....................................................... 60
.
EPS WARNING LAMP ..................................... 41
. Removal and Installation ........................................ 60
.
Description ............................................................. 41
.

Revision: May 2007 STC-2 2007 Altima Hybrid
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow INFOID:0000000001504686
B

DETAILED FLOW
1.COLLECT THE INFORMATION FROM THE CUSTOMER C
It is also important to clarify customer complaints before inspection. First of all, reproduce symptoms, and
understand them fully. Ask customer about his/her complaints carefully. In some cases, it will be necessary to
check symptoms by driving vehicle with customer. D

>> GO TO 2.
E
2.CHECK EPS WARNING LAMP STATUS
Check EPS warning lamp operation. Refer to STC-41, "Description".
Is the operation normal? F
YES >> GO TO 3.
NO >> Proceed to STC-41, "Diagnosis Procedure".
3.CHECK DTC WITH EPS CONTROL UNIT STC

With CONSULT-III
Perform the self-diagnosis. H
Is any malfunction detected by self-diagnosis?
YES >> GO TO 4.
NO >> GO TO 7. I
4.ERASE DTC MEMORY
With CONSULT-III
1. Record DTC. J
2. Erase DTC once.
NOTE:
After erasing DTC record, currently occurred DTC can be detected by reading out DTC again. K

>> GO TO 5.
5.PERFORM DTC CONFIRMATION PROCEDURE L

With CONSULT-III
Perform "DTC CONFIRMATION PROCEDURE" (self-diagnosis) with recorded DTC. M
If two or more DTCs are detected, refer to STC-51, "DTC Inspection Priority Chart" and determine trouble
diagnosis order.
Is any malfunction detected by self-diagnosis?
N
YES >> GO TO 6.
NO >> Check Intermittent Incident. Refer to GI-42, "Intermittent Incident".
6.DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE O
Perform the diagnosis applicable to the displayed DTC. Refer to STC-51, "DTC Index".

>> GO TO 9. P
7.PERFORM DIAGNOSIS BY SYMPTOM
Perform the diagnosis or repair applicable to the symptom. Refer to STC-53, "Symptom Table".

>> GO TO 8.
8.CHECK INPUT/OUTPUT SIGNAL
Revision: May 2007 STC-3 2007 Altima Hybrid
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
Check input/output signal standard of EPS control unit. Refer to STC-43, "Reference Value".
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 2.
9.FINAL CHECK (WHEN DTC WAS DETECTED)
With CONSULT-III
Perform "DTC CONFIRMATION PROCEDURE" (self-diagnosis) with applicable DTC.
Is any malfunction detected by self-diagnosis?
YES >> GO TO 6.
NO >> END
10.FINAL CHECK (WHEN SYMPTOM OCCURRED)
Make sure that the symptom is not detected.
Does symptom remain?
YES >> GO TO 7.
NO >> END

Revision: May 2007 STC-4 2007 Altima Hybrid
INSPECTION AND ADJUSTMENT
< BASIC INSPECTION >
INSPECTION AND ADJUSTMENT
A
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000001504687 B

When replacing EPS control unit, this procedure must be performed.
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re- C
quirement INFOID:0000000001504688

1.PERFORM EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION D
Perform EPS motor angle sensor initialization and torque sensor calibration. Refer to STC-5, "EPS MOTOR
ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION : Special Repair Requirement".
E

>> END
ADDITIONAL SERVICE WHEN REPLACING STEERING GEAR ASSEMBLY F
ADDITIONAL SERVICE WHEN REPLACING STEERING GEAR ASSEMBLY : De-
scription INFOID:0000000001504689
STC
When replacing steering gear assembly, this procedure must be performed.
ADDITIONAL SERVICE WHEN REPLACING STEERING GEAR ASSEMBLY : Special H
Repair Requirement INFOID:0000000001504690

1.PERFORM EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION I
Perform EPS motor angle sensor initialization and torque sensor calibration. Refer to STC-5, "EPS MOTOR
ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRATION : Special Repair Requirement".
J
>> END
EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALI-
K
BRATION
EPS MOTOR ANGLE SENSOR INITIALIZATION AND TORQUE SENSOR CALIBRA-
L
TION : Description INFOID:0000000001504691

Perform EPS motor angle sensor initialization and torque sensor calibration when replacing EPS control unit,
replacing steering gear assembly and/or unbalanced steering wheel turning force. M
NOTE:

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