2008 NISSAN TEANA Trans

WCS-72
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
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:0000000003900511
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

FRONT WIPER AND WASHER SYSTEM
WW-5
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
MA
B
WW
N
O
P
FUNCTION DIAGNOSIS
FRONT WIPER AND WASHER SYSTEM
System DiagramINFOID:0000000003774860
System DescriptionINFOID:0000000003774861
OUTLINE
The front wiper is controlled by each function of BCM and IPDM E/R.
Control by BCM
• Combination switch reading function
 Front wiper control function
Control by IPDM E/R
 Front wiper control function
 Relay control function
FRONT WIPER BASIC OPERATION
 BCM detects the combination switch condition by the combination switch reading function.
 BCM transmits the front wiper request signal to IPDM E/R with CAN communication depending on each
operating condition of the front wiper.
 IPDM E/R turns ON/OFF the integrated front wiper relay and the front wiper high relay according to the front
wiper request signal. IPDM E/R provides the power supply to operate the front wiper HI/LO operation.
FRONT WIPER LO OPERATION
 BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the
front wiper LO operating condition.
Front wiper LO operating condition
- Ignition switch ON
- Front wiper switch LO or front wiper switch MIST (while pressing)
 IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).
FRONT WIPER HI OPERATION
 BCM transmits the front wiper request signal (HI) to IPDM E/R with CAN communication according to the
front wiper HI operating condition.
Front wiper HI operating condition
- Ignition switch ON
- Front wiper switch HI
 IPDM E/R turns ON the integrated front wiper relay and the front wiper high relay according to the front wiper
request signal (HI).
FRONT WIPER INT OPERATION (LINKED WITH VEHICLE SPEED)
JSLIA0135GB

WW-6
< FUNCTION DIAGNOSIS >
FRONT WIPER AND WASHER SYSTEM
 BCM transmits the front wiper request signal (INT) to IPDM E/R with CAN communication according to the
front wiper INT operation condition and the intermittent operation delay interval judged value.
Front wiper INT operating condition- Ignition switch ON
- Front wiper switch INT
Intermittent operation delay interval judgment- BCM calculates the intermittent operation delay interval from the following
 Vehicle speed signal (received from the combination meter with CAN communication)
 Wiper intermittent dial position
 IPDM E/R turns the integrated front wiper relay ON so that the front wiper is operated only once according to
the front wiper request signal (INT).
 BCM detects stop position/except stop position of the front wiper motor according to the front wiper stop
position signal received from IPDM E/R with CAN communication.
 BCM transmits the front wiper request signal (INT) again after the intermittent operation delay interval after
the front wiper motor is stopped.
FRONT WIPER AUTO STOP OPERATION
 BCM stops transmitting the front wiper request signal when the front wiper switch is turned OFF.
 IPDM E/R detects the front wiper stop position signal from the front wiper motor and detects the front wiper
motor position (stop position/except stop position).
Wiper intermittent
dial positionIntermittent
operation
intervalIntermittent operation delay Interval (s)
Vehicle speed
0 – 5 km/h
(0 – 3.1 MPH)5 – 35 km/h
(3.1 – 21.7 MPH)35 – 65 km/h
(21.7 – 40.4 MPH)65 km/h (40.4 MPH)
or more
1
Short
↑
↓
Long0.8 0.6 0.4 0.24
24321.2
3107.553
4161284.8
5 2418127.2
6 3224169.6
7 4231.52112.6
JPLIA0094GB

FRONT WIPER AND WASHER SYSTEM
WW-7
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
MA
B
WW
N
O
P
 When the front wiper request signal is stopped, IPDM E/R turns ON the front wiper relay until the front wiper
motor returns to the stop position.
NOTE:
 BCM stops the transmitting of the front wiper request signal when the ignition switch is OFF.
 IPDM E/R turns the front wiper relay OFF when the ignition switch is OFF.
FRONT WIPER OPERATION LINKED WITH WASHER
 BCM transmits the front wiper request signal (LO) to IPDM E/R with CAN communication according to the
washer linked operating condition of the front wiper.
 BCM transmits the front wiper request signal (LO) so that the front wiper operates approximately 3 times
when the front washer switch OFF is detected.
Washer linked operating condition of front wiper
- Ignition switch ON
- Front washer switch ON (0.4 second or more)
 IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).
 The washer pump is grounded through the combination switch with the front washer switch ON.
FRONT WIPER FAIL−SAFE OPERATION
IPDM E/R performs the fail-safe function when the front wiper auto stop circuit is malfunctioning. Refer to
PCS-31, "
Fail-safe".
JPLIA0410GB

FRONT WIPER AND WASHER SYSTEM
WW-9
< FUNCTION DIAGNOSIS >
C
D
E
F
G
H
I
J
K
MA
B
WW
N
O
P
Combination switch
(Wiper & washer switch)Refer to BCS-8, "System Diagram".
Combination meter Transmits the vehicle speed signal to BCM with CAN communication.Part Description

WW-10
< FUNCTION DIAGNOSIS >
HEADLAMP WASHER SYSTEM
HEADLAMP WASHER SYSTEM
System DiagramINFOID:0000000003771163
System DescriptionINFOID:0000000003771164
OUTLINE
The headlamp washer is controlled by each function of BCM and IPDM E/R.
Control by BCM Combination switch reading function
 Headlamp washer control function
Control by IPDM E/R Relay control function
HEADLAMP WASHER BASIC OPERATION
 BCM detects the combination switch condition by the combination switch reading function.
 BCM transmits the headlamp washer request signal to IPDM E/R with CAN communication depending on
each operating condition of the headlamp washer.
Operating conditions (The first time)
- Ignition switch ON
- Headlamps ON (PASS excluded)
- Front washer switch ON at first time.
Operating conditions (From the second time)- Ignition switch ON
- Headlamps ON (PASS excluded)
- Front washer switch ON at fifth time after the first time.
JPLIA0152GB
JPLIA0177GB

WW-14
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
DATA MONITOR
ACTIVE TEST
Monitor Item
[Unit]Description
PUSH SW
[Off/On]The switch status input from push-button ignition switch.
VEH SPEED 1
[km/h]Displays the value of the vehicle speed signal received from combination meter with CAN communication.
FR WIPER HI
[Off/On]
Status of each switch judged by BCM using the combination switch reading function FR WIPER LOW
[Off/On]
FR WASHER SW
[Off/On]
FR WIPER INT
[Off/On]
FR WIPER STOP
[Off/On]Displays the status of the front wiper stop position signal received from IPDM E/R with CAN communication.
INT VOLUME
[1 − 7] Status of each switch judged by BCM using the combination switch reading function
H/L WASH SW
[Off/On]Status of the switch input from headlamp washer switch
Test item Operation Description
FRONT WIPERHiTransmits the front wiper request signal (HI) to IPDM E/R with CAN communication to
operate the front wiper HI operation.
LoTransmits the front wiper request signal (LO) to IPDM E/R with CAN communication to
operate the front wiper LO operation.
INTTransmits the front wiper request signal (INT) to IPDM E/R with CAN communication to
operate the front wiper INT operation.
Off Stops transmitting the front wiper request signal to stop the front wiper operation.
HEADLAMP WASHER OnTransmits the headlamp washer request signal to IPDM E/R with CAN communication to
operate the headlamp washer operation.

WW-16
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (IPDM E/R)
Concept of auto active test
 IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
 The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test mode
JPMIA1016GB
Symptom Inspection contents Possible cause
Any of the following components do not operate
 Parking lamps
 License plate lamps
Tail lamps
Front fog lamps
 Headlamp (HI, LO)
 Front wiperPerform auto active test.
Does the applicable system
operate?YES BCM signal input circuit
NO Lamp or motor
 Lamp or motor ground cir-
cuit
 Harness or connector be-
tween IPDM E/R and appli-
cable system
IPDM E/R
A/C compressor does not operatePerform auto active test.
Does the magnet clutch oper-
ate?YES A/C amp. signal input circuit
 CAN communication signal
between A/C amp. and
ECM
 CAN communication signal
between ECM and IPDM E/
R
NO Magnet clutch
 Harness or connector be-
tween IPDM E/R and mag-
net clutch
IPDM E/R
Oil pressure warning lamp does not operatePerform auto active test.
Does the oil pressure warning
lamp blink?YES Harness or connector be-
tween IPDM E/R and oil
pressure switch
 Oil pressure switch
IPDM E/R
NO CAN communication signal
between IPDM E/R and
BCM
 CAN communication signal
between BCM and combi-
nation meter
 Combination meter