2014 NISSAN TEANA ECU

PCS-2
PREPARATION .............................................. ...34
Special Service Tool ............................................ ...34
SYSTEM DESCRIPTION ............................35
COMPONENT PARTS .................................... ...35
Component Parts Location .................................. ...35
SYSTEM .......................................................... ...36
POWER DISTRIBUTION SYST EM ........................ ...36
POWER DISTRIBUTION SYSTEM : System Dia-
gram .................................................................... ...
36
POWER DISTRIBUTION SYSTEM : System De-
scription ............................................................... ...
36
DIAGNOSIS SYSTEM (BCM) ............................38
COMMON ITEM ..................................................... ...38
COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) ................................................. ...
38
INTELLIGENT KEY ................................................ ...39
INTELLIGENT KEY : CONSULT Function (BCM -
INTELLIGENT KEY) ........ .......................................
39
ECU DIAGNOSIS INFORMATION ........... ...43
BCM, IPDM E/R .............................................. ...43
List of ECU Reference ......................................... ...43
WIRING DIAGRAM .....................................44
POWER DISTRIBUTION SYSTEM ................ ...44
Wiring Diagram .................................................... ...44
BASIC INSPECTION ...................................53
DIAGNOSIS AND REPAIR WORKFLOW ...... ...53
Work Flow ............................................................ ...53
DTC/CIRCUIT DIAGNOSIS ...................... ...56
U1000 CAN COMM CIRCUIT ......................... ...56
Description ........................................................... ...56
DTC Logic ...............................................................56
Diagnosis Procedure ..............................................56
U1010 CONTROL UNIT (CAN) .........................57
DTC Logic ............................................................ ...57
Diagnosis Procedure ..............................................57
B260A IGNITION RELAY ..................................58
DTC Logic ............................................................ ...58
Diagnosis Procedure ..............................................58
B2614 ACC RELAY CIRCUIT ...........................60
DTC Logic ............................................................ ...60
Diagnosis Procedure ..............................................60
Component Inspection (Relay) ...............................61
B2615 BLOWER RELAY CIRCUIT ...................62
DTC Logic ............................................................ ...62
Diagnosis Procedure ...............................................62
Component Inspection (Relay) ...............................63
B2616 IGNITION RELAY CIRCUIT ...................64
DTC Logic ............................................................ ...64
Diagnosis Procedure ...............................................64
Component Inspection (Relay) ...............................65
B2618 BCM .......................................................66
DTC Logic ............................................................ ...66
Diagnosis Procedure ...............................................66
B261A PUSH-BUTTON IGNITION SWITCH .....68
DTC Logic ............................................................ ...68
Diagnosis Procedure ...............................................68
B26F1 IGNITION RELAY ..................................70
DTC Logic ............................................................ ...70
Diagnosis Procedure ...............................................70
B26F2 IGNITION RELAY ..................................72
DTC Logic ............................................................ ...72
Diagnosis Procedure ...............................................72
B26F6 BCM .......................................................74
DTC Logic ............................................................ ...74
Diagnosis Procedure ...............................................74
PUSH-BUTTON IGNITION SWITCH .................76
Component Function Check ............................... ...76
Diagnosis Procedure ...............................................76
Component Inspection ............................................77
POWER SUPPLY AND GROUND CIRCUIT .....79
BCM ........................................................................ ...79
BCM : Diagnosis Procedure ....................................79
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) ........................... ...
79
IPDM E/R (INTELLIGENT POWER DISTRIBU-
TION MODULE ENGINE ROOM) : Diagnosis Pro-
cedure .................................................................. ...
79
SYMPTOM DIAGNOSIS ............................81
PUSH-BUTTON IGNITION SWITCH DOES
NOT OPERATE .............................................. ...
81
Description ........................................................... ...81
Diagnosis Procedure ...............................................81
REMOVAL AND INSTALLATION ..............82
BCM (BODY CONTROL MODULE) ............... ...82
Removal and Installation .........................................82
PUSH BUTTON IGNITION SWITCH .............. ...83
Exploded View ..................................................... ...83
Removal and Installation .........................................83
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

PCS-10
< SYSTEM DESCRIPTION >[IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
APPLICATION ITEM
CONSULT performs the following functions
via CAN communication with IPDM E/R.
ECU IDENTIFICATION
The IPDM E/R part number is displayed.
SELF DIAGNOSTIC RESULT
Refer to PCS-20, "DTC Index".
DATA MONITOR
Direct Diagnostic Mode Description
Ecu Identification The IPDM E/R part number is displayed.
Self Diagnostic Result The IPDM E/R self diagnostic results are displayed.
Data Monitor The IPDM E/R input/output data is displayed in real time.
Active Test The IPDM E/R activates outputs to test components.
CAN Diag Support Mntr The result of transmit/receive diagnosis of CAN communication is displayed.
Monitor Item [Unit] Main
Signals Description
MOTOR FAN REQ [%] ×Indicates cooling fan speed signal received from ECM on CAN communication
line
AC COMP REQ [On/Off] ×Indicates A/C compressor request signal received from ECM on CAN commu-
nication line
TAIL&CLR REQ [On/Off] ×Indicates position light request signal received from BCM on CAN communica-
tion line
HL LO REQ [On/Off] ×Indicates low beam request signal received from BCM on CAN communication
line
HL HI REQ [On/Off] ×Indicates high beam request signal received from BCM on CAN communication
line
FR FOG REQ [On/Off] ×Indicates front fog light request signal received from BCM on CAN communica-
tion line
FR WIP REQ [Stop/1LOW/Low/Hi] ×Indicates front wiper request signal received from BCM on CAN communication
line
WIP AUTO STOP [STOP P/ACT P] ×Indicates condition of front wiper auto stop signal
WIP PROT [Off/BLOCK] ×Indicates condition of front wiper fail-safe operation
IGN RLY1 -REQ [On/Off] Indicates ignition switch ON signal received from BCM on CAN communication
line
IGN RLY [On/Off] ×Indicates condition of ignition relay
PUSH SW [On/Off] Indicates condition of push-button ignition switch
INTER/NP SW [On/Off] Indicates condition of CVT shift position
ST RLY CONT [On/Off] Indicates starter relay status signal received from BCM on CAN communication
line
IHBT RLY -REQ [On/Off] Indicates starter control relay signal received from BCM on CAN communication
line
ST/INHI RLY [Off/ ST /INHI] Indicates condition of starter relay and starter control relay
DETENT SW [On/Off] Indicates condition of CVT shift selector (park position switch)
DTRL REQ [Off] Indicates daytime light request signal received from BCM on CAN communica-
tion line
HOOD SW [On/Off] Indicates condition of hood switch
THFT HRN REQ [On/Off] Indicates theft warning horn request signal received from BCM on CAN commu-
nication line
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

PCS-12
< ECU DIAGNOSIS INFORMATION >[IPDM E/R]
IPDM E/R (INTELLIGENT POWER DI
STRIBUTION MODULE ENGINE ROOM)
ECU DIAGNOSIS INFORMATION
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Reference ValueINFOID:0000000009461603
VALUES ON THE DIAGNOSIS TOOL
Monitor Item Condition Value/Status
RAD FAN REQ Engine idle speed Changes depending on engine cool-
ant temperature, air conditioner op-
eration status, vehicle speed, etc. 1, 2, 3, 4
AC COMP REQ Engine running A/C switch OFF Off
A/C switch ON
(Compressor is operating) On
TAIL&CLR REQ Lighting switch OFF Off
Lighting switch 1ST, 2ND, HI or AUTO (Light is illuminated) On
HL LO REQ Lighting switch OFF Off
Lighting switch 2ND HI or AUTO (Light is illuminated) On
HL HI REQ Lighting switch OFF Off
Lighting switch HI On
FR FOG REQ Lighting switch 2ND or
AUTO (Light is illuminated) Front fog lamp switch OFF Off
• Front fog lamp switch ON
• Daytime running light activated (Only for Canada models) On
FR WIP REQ Ignition switch ON Front wiper switch OFF STOP
Front wiper switch INT 1LOW
Front wiper switch LO Low
Front wiper switch HI Hi
WIP AUTO STOP Ignition switch ON Front wiper stop position STOP P
Any position other than front wiper
stop position ACT P
WIP PROT Ignition switch ON Front wiper operates normally Off
Front wiper stops at fail-safe opera-
tion BLOCK
IGN RLY1 -REQ Ignition switch OFF or ACC Off
Ignition switch ON On
IGN RLY Ignition switch OFF or ACC Off
Ignition switch ON On
PUSH SW Release the push-button ignition switch Off
Press the push-button ignition switch On
INTER/NP SW Ignition switch ON CVT selector lever in any position
other than P or N Off
CVT selector lever in P or N position On
ST RLY CONT Ignition switch ON Off
At engine cranking On
IHBT RLY -REQ Ignition switch ON Off
At engine cranking On
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-13
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]
C
D E
F
G H
I
J
K L
B
A
O P
N
ST/INHI RLY
Ignition switch ON Off
At engine cranking ST →INHI
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 OFF UNKWN
DETENT SW Ignition switch ON • Press the selector button with
CVT selector lever in P position
• CVT selector lever in any position
other than P Off
Release the CVT selector button with CVT selector lever in P position On
DTRL REQ DTRL OFF Off
DTRL ON On
HOOD SW Hood closed Off
Hood open On
THFT HRN REQ Not operated Off
• Panic alarm is activated
• Horn is activated with VEHICLE SECURITY (THEFT WARNING) SYS- TEM On
HORN CHIRP Not operated Off
Door locking with Intelligent Key (horn chirp mode) On
HOOD SW 2 Hood closed Off
Hood open On
Monitor Item Condition Value/Status
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

PCS-14
< ECU DIAGNOSIS INFORMATION >[IPDM E/R]
IPDM E/R (INTELLIGENT POWER DI
STRIBUTION MODULE ENGINE ROOM)
TERMINAL LAYOUT
PHYSICAL VALUES
AWMIA1307ZZ
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
Signal name Input/
Output
+ −
1
(R) Ground Fusible link main Input Ignition switch OFF Battery voltage
2
(L) Ground Fusible link IPDM E/R Input Ignition switch OFF Battery voltage
3
(G) Ground Fusible link ignition switch Input Ignition switch ON Battery voltage
4
(P) Ground Motor fan 1 Output Ignition switch OFF 0V
Ignition switch ON Battery voltage
6
(R) Ground Fusible link motor fan Input Ignition switch OFF 0V
Ignition switch ON Battery voltage
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-15
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]
C
D E
F
G H
I
J
K L
B
A
O P
N
7
(B) Ground Ground (Power) — Ignition switch ON 0V
9
(SB) Ground Tail RH Output Ignition
switch ON Lighting switch OFF 0V
Lighting switch 1ST Battery voltage
10
(V) Ground Tail LH Output Ignition
switch ON Lighting switch OFF 0V
Lighting switch 1ST Battery voltage
11
(Y) Ground Front wiper LO Output Ignition
switch ON Front wiper switch OFF 0V
Front wiper switch LO Battery voltage
13
(LG) Ground ECM battery Output Ignition switch OFF 0V
Ignition switch ON Battery voltage
14
(Y) Ground Daytime running lamps Output Ignition switch OFF Battery voltage
15
(R) Ground Fuel pump Output Approximately 1 second or more after
turning the ignition switch ON 0V
• Approximately 1 second after turning the ignition switch ON
• Engine running Battery voltage
18
(L) Ground Front wiper HI Output Ignition
switch ON Front wiper switch OFF 0V
Front wiper switch HI Battery voltage
19
(BR) Ground Power steering control unit Output Ignition switch OFF 0V
Ignition switch ON Battery voltage
21
(L) Ground ECM ignition switch Output Ignition switch OFF 0V
Ignition switch ON Battery voltage
22
(W) Ground Horn relay Input The horn is deactivated Battery voltage
The horn is activated 0V
23
(V) Ground Horn switch Input The horn is deactivated Battery voltage
The horn is activated 0V
27
(BG) Ground Fan motor relay mid Input Ignition switch OFF 0V
Ignition switch ON 0.7V
28
(P) —CAN-L
Input/
Output ——
29
(L) —CAN-H Input/
Output ——
31
(Y) Ground Detent switch Input Ignition
switch ON Press the CVT selector
button (CVT selector lever
P) Battery voltage
• CVT selector lever in any position other than
P
• Release the CVT selec- tor button (CVT selector
lever P) 0V
33
(R) Ground Starter control Input
Ignition
switch ON CVT selector lever in any
position other than P or N 0V
CVT selector lever P or N Battery voltage
34
(SB) Ground Wiper autostop Input Ignition
switch ON Front wiper stop position 0V
Any position other than
front wiper stop position Battery voltage
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
Signal name Input/
Output
+ −
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

PCS-16
< ECU DIAGNOSIS INFORMATION >[IPDM E/R]
IPDM E/R (INTELLIGENT POWER DI
STRIBUTION MODULE ENGINE ROOM)
35
(BR) Ground
ABS actuator and electric
unit (control unit) OutputIgnition switch OFF 0V
Ignition switch ON Battery voltage
36
(W) Ground Cooling fan relay-2, 3 Output Ignition switch OFF 0V
Ignition switch ON Battery voltage
37
(W) Ground Transmission range switch
signal InputIgnition
switch ON CVT selector lever in P
(park) or N (neutral) posi-
tion Battery voltage
CVT selector lever in any
position other than P
(park) or N (neutral) posi-
tion 0V
38
(G) Ground Push start switch Input Press the push-button ignition switch 0V
Release the push-button ignition switch Battery voltage
39
(G) Ground Motor fan relay HI Input Ignition switch OFF 0V
Ignition switch ON 0.7V
41
(B) Ground Ground (signal) — Ignition switch ON 0V
43
(LG) Ground
Ignition signal
1InputIgnition switch OFF or ACC 0V
Ignition switch ON Battery voltage
45
2
(V) Ground Power distribution sensor
signal-E/R —• Ignition switch ON (READY)
• Both A/C switch and blower motor
switch ON (A/C compressor oper-
ates) 1.0 - 4.0V
45
3
(P)
47
2
(O) Ground Power distribution sensor
power-E/R — Ignition switch ON 5V
47
3
(BG)
48
(SB) Ground
Power distribution sensor
ground-E/R — Ignition switch ON 0V
49
(P) Ground Ambient sensor signal-E/R — Ignition switch ON 5V
50
(BG) Ground Ambient sensor ground-E/
R — Ignition switch ON 0V
51
(R) Ground Starter motor Output At engine cranking Battery voltage
52
2
(G) Ground O2 sensor #2 Output Ignition switch OFF 0V
52
3
(P) Ignition switch ON Battery voltage
53
2
(W) Ground O2 sensor #1 Output Ignition switch OFF 0V
53
3
(G) Ignition switch ON Battery voltage
54
(LG) Ground Injector #1 Output Ignition switch OFF 0V
Ignition switch ON Battery voltage
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
Signal name Input/
Output
+ −
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

PCS
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
PCS-17
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]
C
D E
F
G H
I
J
K L
B
A
O P
N
552
(W)
Ground Ignition coil Output Ignition switch OFF
(For a few seconds after turning ignition
switch OFF) 0V
55
3
(G) • Ignition switch ON
• Ignition switch OFF
(More than a few seconds after turn-
ing ignition switch OFF) Battery voltage
56
(SB) Ground A/C compressor Output
Engine
running A/C compressor OFF 0V
A/C compressor ON
(A/C compressor is oper-
ating) Battery voltage
57
(R) Ground Electronic throttle control Output Ignition switch OFF
(For a few seconds after turning ignition
switch OFF) 0V
• Ignition switch ON
• Ignition switch OFF (More than a few seconds after turn-
ing ignition switch OFF) Battery voltage
58
(SB) Ground ECM battery Output Ignition switch OFF Battery voltage
59
(L) Ground Engine solenoid Output Ignition switch OFF
(For a few seconds after turning ignition
switch OFF) 0V
• Ignition switch ON
• Ignition switch OFF (More than a few seconds after turn-
ing ignition switch OFF) Battery voltage
60
(Y) Ground Injector #2 Output Ignition switch OFF 0V
Ignition switch ON Battery voltage
61
(Y) Ground
Transmission control mod-
ule OutputIgnition switch OFF 0V
Ignition switch ON Battery voltage
65
2
(BR) Ground Throttle control motor re-
lay OutputIgnition switch ON
→ OFF 0 -1.0V
↓
Battery voltage ↓
0V
65
3
(L) Ignition switch ON 0 - 1.0V
66
(LG) Ground N/P switch Input Ignition
switch ON CVT selector lever in P or
N position Battery voltage
CVT selector lever in any
position other than P or N
position 0V
69
(V) Ground Fuel pump relay Output • Approximately 1 second after turning
the ignition switch ON
• Engine running 0 - 1.0V
Approximately 1 second or more after
turning the ignition switch ON Battery voltage
Te r m i n a l N o .
(Wire color) Description
ConditionVa l u e
(Approx.)
Signal name Input/
Output
+ −
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM