2008 NISSAN TEANA power steering

DIAGNOSIS SYSTEM (BCM)
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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.
WIPER
WIPER : CONSULT-III Function (BCM - WIPER)INFOID:0000000003761581
WORK SUPPORT
*:Factory setting
NOTE:
When performed “RESET SETTING VALUE” on “Work Support (BCM - BCM)”, set “WIPER SPEED SETTING” on “Work Support (BCM
-WIPER)” to “On”.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)
Service item Setting item Description
WIPER SPEED
SETTINGOn*With vehicle speed
(Front wiper intermittent time linked with the vehicle speed and wiper intermittent dial position)
OffWithout vehicle speed
(Front wiper intermittent time linked with the wiper intermittent dial position)

BCM (BODY CONTROL MODULE)
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(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

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< 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)
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PHIGH 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:0000000003941299
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

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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< ECU DIAGNOSIS >
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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

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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(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

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< ECU DIAGNOSIS >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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 +−

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< ECU DIAGNOSIS >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
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”