2008 NISSAN TEANA power steering

DIAGNOSIS SYSTEM (BCM)
PWC-11
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
L
MA
B
PWC
N
O
P
The BCM records the following condition at the moment a particular DTC is detected.
 Vehicle Speed
 Odd Trip Meter
 Vehicle Condition (BCM detected condition)
IGN Counter
IGN counter indicates the number of times that ignition switch is turned ON after DTC is detected.
 The number is 0 when a malfunction is detected now.
 The number increases like 1 → 2 → 3...38 → 39 after returning to the normal condition whenever ignition
switch OFF → ON.
 The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
RETAINED PWR
RETAINED PWR : CONSULT-III Function (BCM - RETAINED PWR)INFOID:0000000003857783
Data monitor
CONSULT screen terms Description
SLEEP>LOCKWhile turning BCM status from low power consumption mode to normal mode (Power supply
position is “LOCK”)
SLEEP>OFFWhile turning BCM status from low power consumption mode to normal mode (Power supply
position is “OFF”.)
LOCK>ACC While turning power supply position from “LOCK” to “ACC”
ACC>ON While turning power supply position from “ACC” to “IGN”
RUN>ACCWhile turning power supply position from “RUN” to “ACC” (Vehicle is stopping and selector
lever is except P position.)
CRANK>RUNWhile turning power supply position from “CRANKING” to “RUN” (From cranking up the en-
gine to run it)
RUN>URGENT While turning power supply position from “RUN“ to “ACC” (Emergency stop operation)
ACC>OFF While turning power supply position from “ACC” to “OFF”
OFF>LOCK While turning power supply position from “OFF” to “LOCK”
OFF>ACC While turning power supply position from “OFF” to “ACC”
ON>CRANK While turning power supply position from “IGN” to “CRANKING”
OFF>SLEEPWhile turning BCM status from normal mode (Power supply position is “OFF”.) to low power
consumption mode
LOCK>SLEEPWhile turning BCM status from normal mode (Power supply position is “LOCK”.) to low pow-
er consumption mode
LOCK Power supply position is “LOCK” (Ignition switch OFF with steering is locked.)
OFF Power supply position is “OFF” (Ignition switch OFF with steering is unlocked.)
ACC Power supply position is “ACC” (Ignition switch ACC)
ON Power supply position is “IGN” (Ignition switch ON with engine stopped)
ENGINE RUN Power supply position is “RUN” (Ignition switch ON with engine running)
CRANKING Power supply position is “CRANKING” (At engine cranking)
Monitor Item Description
DOOR SW-DR Indicates [ON/OFF] condition of driver side door switch.
DOOR SW-AS Indicates [ON/OFF] condition of passenger side door switch.

BCM (BODY CONTROL MODULE)
PWC-47
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
L
MA
B
PWC
N
O
P
93
(Y)Ground ON indicator lamp Output Ignition switchOFF (LOCK indicator is
not illuminated)Battery voltage
ON or ACC 0 V
95
(L)Ground ACC relay control Output Ignition switchOFF 0 V
ACC or ON Battery voltage
96
(Y/R)GroundControl device (de-
tention switch) pow-
er supplyOutput — Battery voltage
97
(L/O)GroundSteering lock condi-
tion No. 1Input Steering lockLOCK status 0 V
UNLOCK status Battery voltage
98
(G/R)GroundSteering lock condi-
tion No. 2Input Steering lockLOCK status Battery voltage
UNLOCK status 0 V
99
(G/B)GroundSelector lever P po-
sition switchInput Selector leverP position 0 V
Any position other than P Battery voltage
100
(P/L)GroundPassenger door re-
quest switchInputPassenger door
request switchON (Pressed) 0 V
OFF (Not pressed)
1.0 V
101
(B/W)GroundDriver door request
switchInputDriver door re-
quest switchON (Pressed) 0 V
OFF (Not pressed)
1.0 V
102
(Y)GroundBlower fan motor re-
lay controlOutput Ignition switchOFF or ACC 0 V
ON Battery voltage
103
(L/R)GroundRemote keyless en-
try receiver power
supplyOutput Ignition switch OFF Battery voltage
106
(G/Y)GroundSteering wheel lock
unit power supplyOutput Ignition switchOFF or ACC Battery voltage
ON 0 V Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
Signal nameInput/
Output +–
JPMIA0016GB
JPMIA0016GB

PWC-62
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
Display contents of CONSULT Fail-safe Cancellation
B2013: ID DISCORD BCM-S/L Inhibit engine cranking Erase DTC
B2014: CHAIN OF S/L-BCM Inhibit engine cranking Erase DTC
B2190: NATS ANTENNA AMP Inhibit engine cranking Erase DTC
B2191: DIFFERENCE OF KEY Inhibit engine cranking Erase DTC
B2192: ID DISCORD BCM-ECM Inhibit engine cranking Erase DTC
B2193: CHAIN OF BCM-ECM Inhibit engine cranking Erase DTC
B2557: VEHICLE SPEED Inhibit steering lockWhen normal vehicle speed signals have been received from ABS
actuator and electric unit (control unit) for 500 ms
B2560: STARTER CONT RELAY Inhibit engine cranking500 ms after the following CAN signal communication status has
become consistent
 Starter control relay signal
 Starter relay status signal
B2601: SHIFT POSITION Inhibit steering lock500 ms after the following signal reception status becomes consis-
tent
 Selector lever P position switch signal
 P range signal (CAN)
B2602: SHIFT POSITION Inhibit steering lock5 seconds after the following BCM recognition conditions are ful-
filled
 Ignition switch is in the ON position
 Selector lever P position switch signal: Except P position (battery
voltage)
 Vehicle speed: 4 km/h (2.5 MPH) or more
B2603: SHIFT POSI STATUS Inhibit steering lock500 ms after the following BCM recognition conditions are fulfilled
 Ignition switch is in the ON position
 Selector lever P position switch signal: Except P position (battery
voltage)
 Selector lever P/N position signal: Except P and N positions (0 V)
B2604: PNP SW Inhibit steering lock500 ms after any of the following BCM recognition conditions is ful-
filled
Status 1
- Ignition switch is in the ON position
- Selector lever P/N position signal: P and N position (battery volt-
age)
- P range signal or N range signal (CAN): ON
Status 2
- Ignition switch is in the ON position
- Selector lever P/N position signal: Except P and N positions (0 V)
- P range signal and N range signal (CAN): OFF
B2605: PNP SW Inhibit steering lock500 ms after any of the following BCM recognition conditions is ful-
filled
 Ignition switch is in the ON position
- Power position: IGN
- Selector lever P/N position signal: Except P and N positions (0 V)
- Interlock/PNP switch signal (CAN): OFF
Status 2
- Ignition switch is in the ON position
- Selector lever P/N position signal: P or N position (battery volt-
age)
- PNP switch signal (CAN): ON
B2606: S/L RELAY Inhibit engine cranking500 ms after the following CAN signal communication status has
become consistent
 Steering lock relay signal (Request signal)
 Steering lock relay signal (Condition signal)
B2607: S/L RELAY Inhibit engine cranking500 ms after the following CAN signal communication status has
become consistent
 Steering lock relay signal (Request signal)
 Steering lock relay signal (Condition signal)

BCM (BODY CONTROL MODULE)
PWC-63
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
L
MA
B
PWC
N
O
P
HIGH FLASHER OPERATION
BCM detects the turn signal lamp circuit status by the current value.
BCM increases the turn signal lamp blinking speed if the bulb or harness open is detected with the turn signal
lamp operating.
NOTE:
The blinking speed is normal while activating the hazard warning lamp.
DTC Inspection Priority ChartINFOID:0000000003888238
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
B2608: STARTER RELAY Inhibit engine cranking500 ms after the following signal communication status becomes
consistent
 Starter motor relay control signal
 Starter relay status signal (CAN)
B2609: S/L STATUS Inhibit engine cranking
 Inhibit steering lockWhen the following steering lock conditions agree
 BCM steering lock control status
 Steering lock condition No. 1 signal status
 Steering lock condition No. 2 signal status
B260A: IGNITION RELAY Inhibit engine cranking500 ms after the following conditions are fulfilled
 IGN relay (IPDM E/R) control signal: OFF (Battery voltage)
 Ignition ON signal (CAN to IPDM E/R): OFF (Request signal)
 Ignition ON signal (CAN from IPDM E/R): OFF (Condition signal)
B260F: ENG STATE SIG LOSTMaintains the power supply
position attained at the time
of DTC detectionWhen any of the following conditions is fulfilled
 Power position changes to ACC
 Receives engine status signal (CAN)
B2612: S/L STATUS Inhibit engine cranking
 Inhibit steering lockWhen any of the following conditions is fulfilled
 Steering lock unit status signal (CAN) is received normally
 The BCM steering lock control status matches the steering lock
status recognized by the steering lock unit status signal (CAN
from IPDM E/R)
B2617: STARTER RELAY CIRC Inhibit engine cranking1 second after the starter motor relay control inside BCM becomes
normal
B2618: BCM Inhibit engine cranking1 second after the ignition relay (IPDM E/R) control inside BCM be-
comes normal
B2619: BCM Inhibit engine cranking1 second after the steering lock unit power supply output control in-
side BCM becomes normal
B261E: VEHICLE TYPE Inhibit engine cranking BCM initialization
B26E1: ENG STATE NO RES Inhibit engine crankingWhen any of the following conditions is fulfilled
 Power position changes to ACC
 Receives engine status signal (CAN)
B26E9: S/L STATUS Inhibit engine cranking
 Inhibit steering lockWhen BCM transmits the LOCK request signal to steering lock unit,
and receives LOCK response signal from steering lock unit, the fol-
lowing conditions is fulfilled
 Steering condition No. 1 signal: LOCK (0 V)
 Steering condition No. 2 signal: LOCK (Battery voltage) Display contents of CONSULT Fail-safe Cancellation
Priority DTC
1 B2562: LOW VOLTAGE
2 U1000: CAN COMM CIRCUIT
 U1010: CONTROL UNIT (CAN)
3 B2190: NATS ANTENNA AMP
 B2191: DIFFERENCE OF KEY
 B2192: ID DISCORD BCM-ECM
 B2193: CHAIN OF BCM-ECM

PWC-84
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003826050
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. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
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:0000000003826051
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.

RF-10
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
FREEZE FRAME DATA (FFD) AND IGN COUNTER
Freeze Frame Data
The BCM records the following condition at the moment a particular DTC is detected.
 Vehicle Speed
 Odo/Trip Meter
 Vehicle Condition (BCM detected condition)
IGN Counter
IGN counter indicates the number of times that ignition switch is turned ON after DTC is detected.
 The number is 0 when a malfunction is detected now.
 The number increases like 1 → 2 → 3...38 → 39 after returning to the normal condition whenever ignition
switch OFF → ON.
 The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
RETAINED PWR
RETAINED PWR : CONSULT-III Function (BCM - RETAINED PWR)INFOID:0000000003812849
Data monitor
CONSULT screen terms Description
SLEEP>LOCKWhile turning BCM status from low power consumption mode to normal mode (Power supply
position is “LOCK”)
SLEEP>OFFWhile turning BCM status from low power consumption mode to normal mode (Power supply
position is “OFF”.)
LOCK>ACC While turning power supply position from “LOCK” to “ACC”
ACC>ON While turning power supply position from “ACC” to “IGN”
RUN>ACCWhile turning power supply position from “RUN” to “ACC” (Vehicle is stopping and selector
lever is except P position.)
CRANK>RUNWhile turning power supply position from “CRANKING” to “RUN” (From cranking up the en-
gine to run it)
RUN>URGENT While turning power supply position from “RUN“ to “ACC” (Emergency stop operation)
ACC>OFF While turning power supply position from “ACC” to “OFF”
OFF>LOCK While turning power supply position from “OFF” to “LOCK”
OFF>ACC While turning power supply position from “OFF” to “ACC”
ON>CRANK While turning power supply position from “IGN” to “CRANKING”
OFF>SLEEPWhile turning BCM status from normal mode (Power supply position is “OFF”.) to low power
consumption mode
LOCK>SLEEPWhile turning BCM status from normal mode (Power supply position is “LOCK”.) to low pow-
er consumption mode
LOCK Power supply position is “LOCK” (Ignition switch OFF with steering is locked.)
OFF Power supply position is “OFF” (Ignition switch OFF with steering is unlocked.)
ACC Power supply position is “ACC” (Ignition switch ACC)
ON Power supply position is “IGN” (Ignition switch ON with engine stopped)
ENGINE RUN Power supply position is “RUN” (Ignition switch ON with engine running)
CRANKING Power supply position is “CRANKING” (At engine cranking)
Monitor Item Description
DOOR SW-DR Indicates [ON/OFF] condition of driver side door switch.
DOOR SW-AS Indicates [ON/OFF] condition of passenger side door switch.

BCM (BODY CONTROL MODULE)
RF-35
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
L
MA
B
RF
N
O
P
93
(Y)Ground ON indicator lamp Output Ignition switchOFF (LOCK indicator is
not illuminated)Battery voltage
ON or ACC 0 V
95
(L)Ground ACC relay control Output Ignition switchOFF 0 V
ACC or ON Battery voltage
96
(Y/R)GroundControl device (de-
tention switch) pow-
er supplyOutput — Battery voltage
97
(L/O)GroundSteering lock condi-
tion No. 1Input Steering lockLOCK status 0 V
UNLOCK status Battery voltage
98
(G/R)GroundSteering lock condi-
tion No. 2Input Steering lockLOCK status Battery voltage
UNLOCK status 0 V
99
(G/B)GroundSelector lever P po-
sition switchInput Selector leverP position 0 V
Any position other than P Battery voltage
100
(P/L)GroundPassenger door re-
quest switchInputPassenger door
request switchON (Pressed) 0 V
OFF (Not pressed)
1.0 V
101
(B/W)GroundDriver door request
switchInputDriver door re-
quest switchON (Pressed) 0 V
OFF (Not pressed)
1.0 V
102
(Y)GroundBlower fan motor re-
lay controlOutput Ignition switchOFF or ACC 0 V
ON Battery voltage
103
(L/R)GroundRemote keyless en-
try receiver power
supplyOutput Ignition switch OFF Battery voltage
106
(G/Y)GroundSteering wheel lock
unit power supplyOutput Ignition switchOFF or ACC Battery voltage
ON 0 V Te r m i n a l N o .
(Wire color)Description
ConditionVa l u e
(Approx.)
Signal nameInput/
Output +–
JPMIA0016GB
JPMIA0016GB

RF-50
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
Display contents of CONSULT Fail-safe Cancellation
B2013: ID DISCORD BCM-S/L Inhibit engine cranking Erase DTC
B2014: CHAIN OF S/L-BCM Inhibit engine cranking Erase DTC
B2190: NATS ANTENNA AMP Inhibit engine cranking Erase DTC
B2191: DIFFERENCE OF KEY Inhibit engine cranking Erase DTC
B2192: ID DISCORD BCM-ECM Inhibit engine cranking Erase DTC
B2193: CHAIN OF BCM-ECM Inhibit engine cranking Erase DTC
B2557: VEHICLE SPEED Inhibit steering lockWhen normal vehicle speed signals have been received from ABS
actuator and electric unit (control unit) for 500 ms
B2560: STARTER CONT RELAY Inhibit engine cranking500 ms after the following CAN signal communication status has
become consistent
 Starter control relay signal
 Starter relay status signal
B2601: SHIFT POSITION Inhibit steering lock500 ms after the following signal reception status becomes consis-
tent
 Selector lever P position switch signal
 P range signal (CAN)
B2602: SHIFT POSITION Inhibit steering lock5 seconds after the following BCM recognition conditions are ful-
filled
 Ignition switch is in the ON position
 Selector lever P position switch signal: Except P position (battery
voltage)
 Vehicle speed: 4 km/h (2.5 MPH) or more
B2603: SHIFT POSI STATUS Inhibit steering lock500 ms after the following BCM recognition conditions are fulfilled
 Ignition switch is in the ON position
 Selector lever P position switch signal: Except P position (battery
voltage)
 Selector lever P/N position signal: Except P and N positions (0 V)
B2604: PNP SW Inhibit steering lock500 ms after any of the following BCM recognition conditions is ful-
filled
Status 1
- Ignition switch is in the ON position
- Selector lever P/N position signal: P and N position (battery volt-
age)
- P range signal or N range signal (CAN): ON
Status 2
- Ignition switch is in the ON position
- Selector lever P/N position signal: Except P and N positions (0 V)
- P range signal and N range signal (CAN): OFF
B2605: PNP SW Inhibit steering lock500 ms after any of the following BCM recognition conditions is ful-
filled
 Ignition switch is in the ON position
- Power position: IGN
- Selector lever P/N position signal: Except P and N positions (0 V)
- Interlock/PNP switch signal (CAN): OFF
Status 2
- Ignition switch is in the ON position
- Selector lever P/N position signal: P or N position (battery volt-
age)
- PNP switch signal (CAN): ON
B2606: S/L RELAY Inhibit engine cranking500 ms after the following CAN signal communication status has
become consistent
 Steering lock relay signal (Request signal)
 Steering lock relay signal (Condition signal)
B2607: S/L RELAY Inhibit engine cranking500 ms after the following CAN signal communication status has
become consistent
 Steering lock relay signal (Request signal)
 Steering lock relay signal (Condition signal)