2008 NISSAN TEANA power steering

PCS-106
< ECU DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
BCM (BODY CONTROL MODULE)
B2192: ID DISCORD BCM-ECM×——SEC-43
B2193: CHAIN OF BCM-ECM×——SEC-45
B2553: IGNITION RELAY —×—PCS-49
B2555: STOP LAMP —×—SEC-50
B2556: PUSH-BTN IGN SW —××SEC-52
B2557: VEHICLE SPEED×××SEC-54
B2560: STARTER CONT RELAY×××SEC-55
B2562: LOW VOLTAGE —×—BCS-36
B2601: SHIFT POSITION×××SEC-56
B2602: SHIFT POSITION×××SEC-59
B2603: SHIFT POSI STATUS×××SEC-61
B2604: PNP SW×××SEC-64
B2605: PNP SW×××SEC-67
B2606: S/L RELAY×××SEC-69
B2607: S/L RELAY×××SEC-70
B2608: STARTER RELAY×××SEC-72
B2609: S/L STATUS×××SEC-74
B260A: IGNITION RELAY×××PCS-51
B260B: STEERING LOCK UNIT —××SEC-78
B260C: STEERING LOCK UNIT —××SEC-79
B260D: STEERING LOCK UNIT —××SEC-80
B260F: ENG STATE SIG LOST×××SEC-81
B2612: S/L STATUS×××SEC-85
B2614: ACC RELAY CIRC —××PCS-53
B2615: BLOWER RELAY CIRC —××PCS-55
B2616: IGN RELAY CIRC —××PCS-57
B2617: STARTER RELAY CIRC×××SEC-89
B2618: BCM×××PCS-59
B2619: BCM×××SEC-91
B261A: PUSH-BTN IGN SW —××SEC-92
B261E: VEHICLE TYPE××× (Turn ON for 15
seconds)SEC-95
B2621: INSIDE ANTENNA —×—DLK-50
B2622: INSIDE ANTENNA —×—DLK-52
B2623: INSIDE ANTENNA —×—DLK-54
B26E1: ENG STATE NO RES×××SEC-82
B26E9: S/L STATUS××× (Turn ON for 15
seconds)SEC-83
B26EA: KEY REGISTRATION —×× (Turn ON for 15
seconds)SEC-84
CONSULT display Fail-safe Freeze Frame DataIntelligent Key warn-
ing lamp ONReference page

PCS-108
< ECU DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
ST/INHI RLYIgnition switch ON Off
At engine cranking INHI → ST
The status of starter relay or starter control relay cannot be recognized by
the battery voltage malfunction, etc. when the starter relay is ON and the
starter control relay is OFFUNKWN
DETENT SWIgnition switch ON Press the selector button with se-
lector lever in P position
 Selector lever in any position oth-
er than POff
Release the selector button with selector lever in P position On
S/L RLY -REQNone of the conditions below are present Off
 Open the driver door after the ignition switch is turned OFF (for a few
seconds)
 Press the push-button ignition switch when the steering lock is activat-
edOn
S/L STATESteering lock is activated LOCK
Steering lock is deactivated UNLOCK
[DTC: B210A] is detected UNKWN
DTRL REQNOTE:
The item is indicated, but not monitored.Off
OIL P SWIgnition switch OFF, ACC or engine running Open
Ignition switch ON Close
HOOD SWClose the hood Off
Open the hood On
HL WASHER REQNot operating Off
Headlamp washer operating On
THFT HRN REQNot operating Off
Horn is activated with vehicle security (theft warning) system On
HORN CHIRPNot operating Off
 Door locking with Intelligent Key (horn chirp mode)
 Door locking with key fob (horn chirp mode)On
CRNRNG LMP REQNOTE:
The item is indicated, but not monitored.Off Monitor Item Condition Value/Status

PCS-110
< ECU DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
11
(P)GroundSteering lock unit power
supplyOutputIgnition
switch
OFFA few seconds after open-
ing the driver doorBattery voltage
Ignition
switch
LOCKPress the push-button ig-
nition switchBattery voltage
Ignition switch ACC or ON 0 V
12
(B/W)Ground Ground — Ignition switch ON 0 V
13
(SB)Ground Fuel pump power supply OutputApproximately 1 second or more after
turning the ignition switch ON0 V
 Approximately 1 second after turning
the ignition switch ON
 Engine runningBattery voltage
15
(W)Ground Ignition relay power supply OutputIgnition switch OFF 0 V
Ignition switch ON Battery voltage
16
(R)Ground Front wiper auto stop InputIgnition
switch ONFront wiper stop position 0 V
Any position other than
front wiper stop positionBattery voltage
17
(V)GroundHeadlamp washer relay
controlInputIgnition
switch ONHeadlamp washer deacti-
vatedBattery voltage
Headlamp washer activat-
ed0 V
19
(Y)Ground Ignition relay power supply OutputIgnition switch OFF 0 V
Ignition switch ON Battery voltage
20
(B)Ground Ambient sensor ground Output Ignition switch ON 0 V
21
(O)Ground Ambient sensor InputIgnition switch ON
NOTE:
Changes depending to ambient tem-
perature
22
(SB)GroundRefrigerant pressure sen-
sor groundOutputEngine
running Warm-up condition
 Idle speed0 V
23
(GR)GroundRefrigerant pressure sen-
sorOutputEngine
running Warm-up condition
 Both A/C switch and
blower fan motor switch
ON
(Compressor operates)1.0 - 4.0 V
24
(G)GroundRefrigerant pressure sen-
sor power supplyInputIgnition switch OFF 0 V
Ignition switch ON 5.0 V
25
(GR)Ground Ignition relay power supply OutputIgnition switch OFF 0 V
Ignition switch ON Battery voltage
27
(W)Ground Ignition relay monitor InputIgnition switch OFF or ACC Battery voltage
Ignition switch ON 0 V Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
Signal nameInput/
Output +−
JSNIA0014GB

PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-111
< ECU DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L B A
O
P N
28
(SB)GroundPush-button ignition
switchInputPress the push-button ignition switch 0 V
Release the push-button ignition switch Battery voltage
30
(BR)Ground Starter relay control InputIgnition
switch ONSelector lever in any posi-
tion other than P or N0 V
Selector lever P or N Battery voltage
32
(V)GroundSteering lock unit condi-
tion-1InputSteering lock is activated 0 V
Steering lock is deactivated Battery voltage
33
(G)GroundSteering lock unit condi-
tion-2InputSteering lock is activated Battery voltage
Steering lock is deactivated 0 V
34
(O)Ground Cooling fan relay-3 control InputCooling fan stopped Battery voltage
Cooling fan at HI operation 0 V
35
(P)GroundCooling fan relay-1 power
supplyInputCooling fan stopped Battery voltage
Cooling fan at LO operation 6.0 V
36
(G)Ground Battery power supply Input Ignition switch OFF Battery voltage
38
(GR)GroundCooling fan relay-1 power
supplyOutputCooling fan not operating 0 V
Cooling fan at LO operation 6.0 V
39
(P)—CAN-LInput/
Output——
40
(L)—CAN-HInput/
Output——
41
(B)Ground Ground — Ignition switch ON 0 V
42
(SB)Ground Cooling fan relay-2 control InputCooling fan stopped Battery voltage
 Cooling fan MID operating
 Cooling fan HI operating0 V
43
(Y)GroundControl device
(Detention switch)InputIgnition
switch ONPress the selector button
(selector lever P)Battery voltage
 Selector lever in any po-
sition other than P
 Release the selector
button (selector lever P)0 V
44
(G)Ground Horn relay control InputThe horn is deactivated Battery voltage
The horn is activated 0 V
45
(O)Ground Horn switch InputThe horn is deactivated Battery voltage
The horn is activated 0 V
46
(BR)Ground Starter relay control InputIgnition
switch ONSelector lever in any posi-
tion other than P or N0 V
Selector lever P or N Battery voltage
48
(Y/R)Ground A/C relay power supply OutputEngine
runningA/C switch OFF 0 V
A/C switch ON
(A/C compressor is oper-
ating)Battery voltage Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
Signal nameInput/
Output +−

PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-119
< ECU DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L B A
O
P N If No CAN Communication Is Available With BCM
IGNITION RELAY MALFUNCTION DETECTION FUNCTION
 IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it.
 IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the excitation
coil circuit.
 If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to
alert the user to the ignition relay malfunction when the ignition switch is turned OFF.
FRONT WIPER CONTROL
IPDM E/R detects front wiper stop position by a front wiper auto stop signal.
When a front wiper auto stop signal is in the conditions listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 seconds activation and 20 seconds stop five times.
Control part Fail-safe operation
Cooling fan Turns ON the cooling fan relay-2 and the cooling fan relay-3 when ignition switch is
turned ON (Cooling fan operates at HI)
 Turns OFF the cooling fan relay-1, the cooling fan relay-2 and the cooling fan relay-3
when the ignition switch is turned OFF (Cooling fan does not operate)
A/C compressor A/C relay OFF
Alternator Outputs the power generation command signal (PWM signal) 0%
Control part Fail-safe operation
Headlamp Turns ON the headlamp low relay when the ignition switch is turned ON
 Turns OFF the headlamp low relay when the ignition switch is turned OFF
 Headlamp high relay OFF
Parking lamps
 License plate lamps
 Illuminations
 Tail lamps Turns ON the tail lamp relay when the ignition switch is turned ON
 Turns OFF the tail lamp relay when the ignition switch is turned OFF
Front wiper The status just before activation of fail-safe control is maintained until the ignition
switch is turned OFF while the front wiper is operating at LO or HI speed.
 The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-
safe control is activated while the front wiper is set in the INT mode and the front wiper
motor is operating.
Front fog lamps Front fog lamp relay OFF
Horn Horn OFF
Ignition relay The status just before activation of fail-safe is maintained.
Starter motor Starter control relay OFF
Steering lock unit Steering lock relay OFF
Headlamp washer relay Headlamp washer relay OFF
Voltage judgment
IPDM E/R judgment Operation
Ignition relay contact sideIgnition relay excitation coil
side
ON ON Ignition relay ON normal —
OFF OFF Ignition relay OFF normal —
ON OFF Ignition relay ON stuck Detects DTC “B2098: IGN RELAY ON”
 Turns ON the tail lamp relay for 10 min-
utes
OFF ON Ignition relay OFF stuck Detects DTC “B2099: IGN RELAY OFF”

PCS
PRECAUTIONS
PCS-121
< PRECAUTION >[POWER DISTRIBUTION SYSTEM]
C
D
E
F
G
H
I
J
K
L B A
O
P N
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003940025
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIRBAG” and
“SEAT BELT” of this Service Manual.
WARNING:
 To avoid rendering the SRS inoperative, 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 incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIRBAG”.
 Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
Precaution Necessary for Steering Wheel Rotation after Battery Disconnect
INFOID:0000000003940024
NOTE:
 Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-
tion, then disconnect both battery cables.
 After finishing work, confirm that all control unit connectors are connected properly, then re-connect both
battery cables.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.
This vehicle is equipped with a push-button ignition switch and a steering lock unit.
If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.
If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure
below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position.
(At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of all control units using CONSULT-III.

PCS-122
< SYMPTOM DIAGNOSIS >[POWER DISTRIBUTION SYSTEM]
POWER DISTRIBUTION SYSTEM
SYMPTOM DIAGNOSIS
POWER DISTRIBUTION SYSTEM
Symptom TableINFOID:0000000003805778
The engine start function, door lock function, power distribution system and NATS-IVIS/NVIS in the Intelligent
Key system are closely related to each other regarding control. Narrow down the functional area in question
by checking the following table to identify which function is malfunctioning. The vehicle security function can
operate only when the door lock and power distribution system are operating normally. Therefore, it is easy to
identify any factor unique to the vehicle security system by checking the following table.
Use the chart below to help you find the cause of the symptom. The numbers indicate the order of the inspec-
tion.
NOTE:
Before starting vehicle security system operation check, the following conditions must be met.
 Open front windows
 Turn ignition switch OFF
 Pull out Intelligent Key from key slot.
NO. Function Operation condition Symptom Diagnostic ItemReference
page
1INTELLIGENT
KEY SYSTEM/
DOOR LOCK
FUNCTIONLock/unlock door with door re-
quest switch.
(Intelligent Key is in the inside
key antenna detection area)Door does not lock/unlock —DLK-158
2POWER DIS-
TRIBUTION
FUNCTIONPress push-button ignition
switch under the following con-
ditions.
 Selector lever position is in
the P or N position
 Do not depress brake pedalPush-button ignition switch
does not operate—PCS-124
3INTELLIGENT
KEY SYSTEM/
ENGINE START
FUNCTIONStart engine with Intelligent Key
into the vehicle (Intelligent Key
is in the inside key antenna de-
tection area)Engine can not start with Intel-
ligent Key—SEC-193
4Open the door after the ignition
switch is turned ON to OFFSteering is not locked —SEC-194
5
NISSAN VEHI-
CLE IMMOBI-
LIZER
SYSTEM-NATS
FUNCTIONStart engine with Intelligent Key
in the key slotEngine can not start —SEC-195
6Open the door after the ignition
switch is turned ON to OFFSteering is not locked —SEC-194
7Insert Intelligent Key in the key
slotKey slot indicator does not illu-
minate—SEC-196

PWC-2
REAR LH ...................................................................23
REAR LH : Description ...........................................23
REAR LH : Component Function Check ................23
REAR LH : Diagnosis Procedure ............................23
REAR LH : Component Inspection .........................24
REAR RH ..................................................................24
REAR RH : Description ..........................................24
REAR RH : Component Function Check ................24
REAR RH : Diagnosis Procedure ...........................25
REAR RH : Component Inspection ........................26
DOOR SWITCH .................................................27
Description ..............................................................27
Component Function Check .................................27
Diagnosis Procedure ..............................................27
Component Inspection ............................................28
ENCODER CIRCUIT ..........................................29
Description ..............................................................29
Component Function Check ...................................29
Diagnosis Procedure ..............................................29
ECU DIAGNOSIS ........................................32
BCM (BODY CONTROL MODULE) ..................32
Reference Value .....................................................32
Wiring Diagram - BCM - .........................................55
Fail-safe ..................................................................61
DTC Inspection Priority Chart ..............................63
DTC Index ..............................................................64
POWER WINDOW MAIN SWITCH ....................66
Reference Value .....................................................66
Wiring Diagram - POWER WINDOW SYSTEM - ...68
Fail-safe ..................................................................72
SYMPTOM DIAGNOSIS .............................74
POWER WINDOWS DO NOT OPERATE
WITH ANY POWER WINDOW SWITCHES ......
74
Diagnosis Procedure ..............................................74
DRIVER SIDE POWER WINDOW DOES NOT
OPERATE ..........................................................
75
Diagnosis Procedure ..............................................75
FRONT PASSENGER SIDE POWER WIN-
DOW DOES NOT OPERATE ............................
76
WITH BOTH POWER WINDOW MAIN SWITCH
AND FRONT PASSENGER SIDE POWER WIN-
DOW SWITCH ...........................................................
76
WITH BOTH POWER WINDOW MAIN SWITCH
AND FRONT PASSENGER SIDE POWER WIN-
DOW SWITCH : Diagnosis Procedure ...................
76
POWER WINDOW MAIN SWITCH IS OPERATED ...76
POWER WINDOW MAIN SWITCH IS OPERAT-
ED : Diagnosis Procedure ......................................
76
REAR LH SIDE POWER WINDOW DOES
NOT OPERATE .................................................
77
WITH BOTH POWER WINDOW MAIN SWITCH
AND REAR POWER WINDOW SWITCH LH ............
77
WITH BOTH POWER WINDOW MAIN SWITCH
AND REAR POWER WINDOW SWITCH LH : Di-
agnosis Procedure ..................................................
77
WITH REAR POWER WINDOW SWITCH LH
ONLY .........................................................................
77
WITH REAR POWER WINDOW SWITCH LH
ONLY : Diagnosis Procedure ..................................
77
REAR RH SIDE POWER WINDOW DOES
NOT OPERATE .................................................
78
WITH BOTH POWER WINDOW MAIN SWITCH
AND REAR POWER WINDOW SWITCH RH ...........
78
WITH BOTH POWER WINDOW MAIN SWITCH
AND REAR POWER WINDOW SWITCH RH : Di-
agnosis Procedure ..................................................
78
WITH REAR POWER WINDOW SWITCH RH
ONLY .........................................................................
78
WITH REAR POWER WINDOW SWITCH RH
ONLY : Diagnosis Procedure ..................................
78
ANTI-PINCH SYSTEM DOES NOT OPERATE
NORMALLY (DRIVER SIDE) ............................
79
Diagnosis Procedure ...............................................79
POWER WINDOW RETAINED POWER OP-
ERATION DOES NOT OPERATE PROPERLY
...
80
Diagnosis Procedure ...............................................80
AUTO OPERATION DOES NOT OPERATE
BUT MANUAL OPERATE NORMALLY
(DRIVER SIDE) ..................................................
81
Diagnosis Procedure ...............................................81
POWER WINDOW LOCK SWITCH DOES
NOT FUNCTION ................................................
82
Diagnosis Procedure ...............................................82
POWER WINDOW SWITCH DOES NOT IL-
LUMINATE .........................................................
83
Diagnosis Procedure ...............................................83
PRECAUTION ............................................84
PRECAUTIONS .................................................84
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
84
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ...................................
84
ON-VEHICLE REPAIR ...............................85
POWER WINDOW MAIN SWITCH ...................85