
EXL-24
< SYSTEM DESCRIPTION >
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 
![NISSAN TEANA 2014  Service Manual 
HAC-126
< SYSTEM DESCRIPTION >[MANUAL AIR CONDITIONER]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
CONSULT Function (IPDM E/R)INFOID:0000000009958324
CAUTION: 
After disconnecting the CON NISSAN TEANA 2014  Service Manual 
HAC-126
< SYSTEM DESCRIPTION >[MANUAL AIR CONDITIONER]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
CONSULT Function (IPDM E/R)INFOID:0000000009958324
CAUTION: 
After disconnecting the CON](/manual-img/5/57390/w960_57390-2774.png)
HAC-126
< SYSTEM DESCRIPTION >[MANUAL AIR CONDITIONER]
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
CONSULT Function (IPDM E/R)INFOID:0000000009958324
CAUTION: 
After disconnecting the CONSULT vehicle interface (VI)  from the data link connector, the ignition must
be cycled OFF  → ON (for at least 5 seconds)  → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentially causing a di scharged battery and a no-start condition. 
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
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM 
![NISSAN TEANA 2014  Service Manual 
INL-14
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
SELF DIAGNOSTIC RESULT
Refer to BCS-52, "DTC Index".
DATA MONITOR
Monitor Item [Unit] Main Description
REQ SW -DR [On/Off] ×Indicates condition o NISSAN TEANA 2014  Service Manual 
INL-14
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
SELF DIAGNOSTIC RESULT
Refer to BCS-52, "DTC Index".
DATA MONITOR
Monitor Item [Unit] Main Description
REQ SW -DR [On/Off] ×Indicates condition o](/manual-img/5/57390/w960_57390-2834.png)
INL-14
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
SELF DIAGNOSTIC RESULT
Refer to BCS-52, "DTC Index".
DATA MONITOR
Monitor Item [Unit] Main Description
REQ SW -DR [On/Off] ×Indicates condition of door request switch LH.
REQ SW -AS [On/Off] ×Indicates condition of door request switch RH.
REQ SW -BD/TR [On/Off] ×Indicates condition of trunk opener request switch.
PUSH SW [On/Off] Indicates condition of push-button ignition switch. 
SHFTLCK SLNID PER SPLY [On/Off] ×Indicates condition of power supply to shiftlock solenoid.
BRAKE SW 1 [On/Off] ×Indicates condition of brake switch.
BRAKE SW 2 [On/Off] Indicates condition of brake switch.
DETE/CANCL SW [On/Off] ×Indicates condition of P (park) position.
SFT PN/N SW [On/Off] ×Indicates condition of P (park) or N (neutral) position.
UNLK SEN -DR [On/Off] ×Indicates condition of door unlock sensor.
PUSH SW -IPDM [On/Off] Indicates condition of push-button ignition switch received from IPDM E/R  
on CAN communication line.
IGN RLY1 -F/B [On/Off] Indicates condition of ignition relay 1 received from IPDM E/R on CAN 
communication line.
DETE SW -IPDM [On/Off] Indicates condition of detent switch received from TCM on CAN communi- 
cation line.
SFT PN -IPDM [On/Off] Indicates condition of P (park) or N (neutral) position from TCM on CAN  
communication line.
SFT P -MET [On/Off] Indicates condition of P (park) position from TCM on CAN communication 
line.
SFT N -MET [On/Off] Indicates condition of N (neutral) position from IPDM E/R on CAN commu- 
nication line.
ENGINE STATE [STOP/START/CRANK/RUN] ×Indicates condition of engine state from ECM on CAN communication line.
VEH SPEED 1 [mph/km/h] ×Indicates condition of vehicle speed signal received from ABS on CAN  
communication line.
VEH SPEED 2 [mph/km/h] ×Indicates condition of vehicle speed signal received from combination 
meter on CAN communication line.
DOOR STAT -DR [LOCK/READY/UNLK] ×Indicates condition of driver side door status.
DOOR STAT -AS [LOCK/READY/UNLK] ×Indicates condition of passenger side door status.
DOOR STAT -RR [LOCK/READY/UNLK] ×Indicates condition of rear right side door status.
DOOR STAT -RL [LOCK/READY/UNLK] ×Indicates condition of rear left side door status.
ID OK FLAG [Set/Reset] Indicates condition of Intelligent Key ID. 
PRMT ENG STRT [Set/Reset] Indicates condition of engine start possibility.
PRMT RKE STRT [Set/Reset] Indicates condition of  engine start possibility from Intelligent Key.
I-KEY OK FLAG [Key ON/Key OFF] ×Indicates condition of Intelligent Key OK flag.
PRBT ENG STRT [Set/Reset] Indicates condition of engine start prohibit.
ID AUTHENT CANCEL TIMER [STOP] Indicates condition of Intelligent Key ID authentication.
ACC BATTERY SAVER [STOP] Indicate s condition of battery saver.
CRNK PRBT TMR [On/Off] Indicates co ndition of crank prohibit timer.
AUT CRNK TMR [On/Off] Indicates co ndition of automatic engine crank timer fr om Intelligent Key.
CRNK PRBT TME [sec] Indicat es condition of engine crank prohibit time.
AUTO CRNK TME [sec] Indicates co ndition of automatic engine crank time from Intelligent Key.
CRANKING TME [sec] Indicates condition of engine cranking time from Intelligent Key.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM 

DIAGNOSIS SYSTEM (IPDM E/R)INL-19
< SYSTEM DESCRIPTION >
C 
D E
F
G H
I
J
K
M A 
B
INL
N
O P
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 
![NISSAN TEANA 2014  Service Manual 
LAN
SYSTEMLAN-33
< SYSTEM DESCRIPTION > [CAN]
C 
D E
F
G H
I
J
K L
B 
A
O P
N
Engine status signal T R R R R 
Fuel consumption monitor signal T R R
Fuel filler cap warning display signal T R 
Malfunc NISSAN TEANA 2014  Service Manual 
LAN
SYSTEMLAN-33
< SYSTEM DESCRIPTION > [CAN]
C 
D E
F
G H
I
J
K L
B 
A
O P
N
Engine status signal T R R R R 
Fuel consumption monitor signal T R R
Fuel filler cap warning display signal T R 
Malfunc](/manual-img/5/57390/w960_57390-2981.png)
LAN
SYSTEMLAN-33
< SYSTEM DESCRIPTION > [CAN]
C 
D E
F
G H
I
J
K L
B 
A
O P
N
Engine status signal T R R R R 
Fuel consumption monitor signal T R R
Fuel filler cap warning display signal T R 
Malfunctioning indicator lamp signal TR
RT
Oil pressure warning lamp signal T R 
Power generation command value  
signal TR
Target throttle position signal T R
Wide open throttle position signal T R  
EPS operation signal R T
Hydraulic pump electric power steer- 
ing warning lamp signal TR
Detention switch signal T R R 
Front wiper stop position signal T R
High beam status signal R T
Hood switch signal T R 
Interlock/PNP switch signal RT
TR R
Low beam status signal R T
Oil pressure switch signal RT
TR R
Push-button ignition switch status  
signal TR
Rear window defogger control signal R T 
Sleep ready signal T R
Starter relay status signal T R
Steering lock unit status signal T R 
Steering lock relay signal RT
TR
Current gear position signal T R R 
CVT position indicator signal T R R
Input shaft revolution signal R T R R
Manual mode indicator signal T R R
N range signal T R
Output shaft revolution signal R T R R 
O/D OFF indicator signal
*1TR R
P range signal T R R 
Shift position signal T R R
Brake fluid level signal T R
Distance to empty signal T R
Fuel filler cap warning reset signal R T
Fuel level low warning signal T R
Fuel level sensor signal R T Signal name
ECM
EPS
IPDM-E TCM 
M&A
STRG AV
AV M
HVAC ABS
BCM
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM 
![NISSAN TEANA 2014  Service Manual 
PC S-6
< SYSTEM DESCRIPTION >[IPDM E/R]
SYSTEM
RELAY CONTROL SYSTEM : System Description
INFOID:0000000009461598
IPDM E/R activates the internal cont rol circuit to perform the relay ON-OFF control a NISSAN TEANA 2014  Service Manual 
PC S-6
< SYSTEM DESCRIPTION >[IPDM E/R]
SYSTEM
RELAY CONTROL SYSTEM : System Description
INFOID:0000000009461598
IPDM E/R activates the internal cont rol circuit to perform the relay ON-OFF control a](/manual-img/5/57390/w960_57390-3354.png)
PC S-6
< SYSTEM DESCRIPTION >[IPDM E/R]
SYSTEM
RELAY CONTROL SYSTEM : System Description
INFOID:0000000009461598
IPDM E/R activates the internal cont rol circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication. 
CAUTION: 
IPDM E/R integrated relays cannot be removed.
POWER CONSUMPTION CONTROL SYSTEM
Control relay Input/output T ransmit unitControl partReference 
page
Front fog lamp relay Front fog lamp request signal BCM (CAN) Front fog lamp EXL-101
Headlamp high relay High beam request signal BCM (CAN) Headlamp highEXL-91
Headlamp low relay Low beam request signal BCM (CAN) Headlamp lowEXL-93
 
(halogen) 
EXL-94
 (xe-
non)
Tail lamp relay Position light request signal BCM (CAN) •Parking lamp
• Side marker lamp
• License plate lamp
•Tail lamp EXL-103
• Front wiper relay
• Front wiper high relay Front wiper request signal BCM (CAN)
Front wiperWW-48
Front wiper auto stop signal Front wiper motor
Cooling fan relay-1 Cooling fan request signal ECM Cooling fan EC-499
 
(QR25DE)
EC-953
 
(VQ35DE)
A/C relay A/C compressor request  signal ECM (CAN) A/C compressor HAC-87
 
(automatic 
air condi-
tioner) 
HAC-151
 
(manual air  
conditioner)
Ignition relay-1 Ignition switch ON signal BCM (CAN)
Ignition relay-1PCS-58
Vehicle speed signal Combination meter (CAN) 
Push-button ignition switch Push-button ignition switch
Fuel pump relay Fuel pump request signal ECM Fuel pump EC-508
 
(QR25DE) 
EC-965
 
(VQ35DE)
ECM relay ECM relay cont rol signal ECM ECM relay EC-203
 
(QR25DE)
EC-709
 
(VQ35DE)
Throttle contro l motor relay Throttle control 
motor relay sig-
nal ECMThrottle control motor re-
lay EC-475
 
(QR25DE)
EC-933
 
(VQ35DE)
Starter relay Starter relay control signal BCM Starter motor PCS-12
Starter control relay
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM 
![NISSAN TEANA 2014  Service Manual 
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 par NISSAN TEANA 2014  Service Manual 
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 par](/manual-img/5/57390/w960_57390-3358.png)
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 
![NISSAN TEANA 2014  Service Manual 
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
 NISSAN TEANA 2014  Service Manual 
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](/manual-img/5/57390/w960_57390-3363.png)
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