2014 NISSAN TEANA brake light

ECM
EC-91
< ECU DIAGNOSIS INFORMATION > [QR25DE]
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CANCEL SW • Ignition switch: ON
CANCEL switch: Pressed On
CANCEL switch: Released Off
RESUME/ACC SW • Ignition switch: ON RESUME/ACCELERATE switch:
Pressed On
RESUME/ACCELERATE switch: Re-
leased Off
SET SW • Ignition switch: ON SET/COAST switch: Pressed On
SET/COAST switch: Released Off
BRAKE SW1
(Brake pedal posi-
tion switch) • Ignition switch: ON Brake pedal: Fully released On
Brake pedal: Slightly depressed Off
BRAKE SW2
(Stop lamp switch) • Ignition switch: ON Brake pedal: Fully released Off
Brake pedal: Slightly depressed On
VHCL SPD CUT • Ignition switch: ON Non
LO SPEED CUT • Ignition switch: ON Non
AT OD MONITOR • Ignition switch: ON Off
AT OD CANCEL • Ignition switch: ON Off
CRUISE LAMP • Ignition switch: ON MAIN switch: Pressed at the 1st time
→
at the 2nd time On
→ Off
SET LAMP • MAIN switch: ON
• When vehicle speed: Between 40 km/h (25 MPH) and 144 km/h (89
MPH) ASCD: Operating On
ASCD: Not operating Off
ALT DUTY • Engine speed: Idle 0 - 80%
BAT CUR SEN • Engine speed: Idle
• Battery: Fully charged
*2
• Selector lever: P or N
• Air conditioner switch: OFF
•No load Approx. 2,600 - 3,500 mV
A/F ADJ-B1 • Engine: running –0.330 - 0.330
TUMBLE POS SEN • Ignition switch: ON
• Engine coolant temperature: Be-
tween -12 °C (10 °F) and 59 °C
(138 °F) Accelerator pedal: Fully released Less than 1.4 V
Accelerator pedal: Fully depressed More than 2.8 V
P/N POSI SW • Ignition switch: ON Selector lever: P or N On
Selector lever: Except above Off
INT/A TEMP SE • Ignition switch: ON Indicates intake air tempera-
ture
AC PRESS SEN • Engine speed: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates) 1.0 - 4.0 V
VTC DTY EX B1 • Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
•No load Idle 0 - 2%
2,000 rpm Approx. 0- 90%
EVAP LEAK DIAG • Ignition switch: ON Depending on condition of
EVAP leak diagnosis
EVAP DIAG READY • Ignition switch: ON Depending on ready condi-
tion of EVAP leak diagnosis
BAT TEMP SEN • Engine: After warming up, idle the engine
• Selector lever: P or N
• Air conditioner switch: OFF
•No load Indicates the temperature
around the battery.
Monitor Item Condition Values/Status
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

ECM
EC-101
< ECU DIAGNOSIS INFORMATION > [QR25DE]
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: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
*1: For California
*2: Before measuring the terminal voltage, confi rm that the battery is fully charged. Refer to PG-4, "How to
Handle Battery".
Fail SafeINFOID:0000000009462122
NON DTC RELATED ITEM
11 5
(L) 128
(GR) Stop lamp switch Input [Ignition switch: OFF]
• Brake pedal: Fully released 0 V
[Ignition switch: OFF]
• Brake pedal: Slightly depressed Battery voltage
(11 - 14 V)
11 6
(BR) 128
(GR) Brake pedal position
switch Input[Ignition switch: OFF]
• Brake pedal: Fully released Battery voltage
(11 - 14 V)
11 7
(W) 128
(GR) PNP signal Input [Ignition switch: ON]
• Selector lever: P or N Battery voltage
(11 - 14 V)
[Ignition switch: ON]
• Selector lever: Except above 0 V
11 8 (G) —Sensor power supply
(Accelerator pedal posi-
tion sensor 2) — [Ignition switch: ON] 5.0 V
11 9 (P) 120
(G) Accelerator pedal posi-
tion sensor 2 Input[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released 0.25 - 0.5 V
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed 2.0 - 2.5 V
120 (G) —Sensor ground
(Accelerator pedal posi-
tion sensor 2) —— —
121
(LG) 128
(GR) Power supply for ECM Input [Ignition switch: ON] Battery voltage
(11 - 14 V)
122 (V) —Sensor power supply
(Accelerator pedal posi-
tion sensor 1) — [Ignition switch: ON] 5.0 V
124
(SB) —Sensor ground
(EVAP control system
pressure sensor, refriger-
ant pressure sensor) —— —
125
(BR) 128
(GR) Fuel tank temperature
sensor Input [Engine is running] 0 - 4.8 V
Output voltage varies with fuel tank temperature
126
(SB) 127
(L) Accelerator pedal posi-
tion sensor 1 Input[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released 0.5 - 1.0 V
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed 4.2 - 4.8 V
127 (L) —Sensor ground
(Accelerator pedal posi-
tion sensor 1) —— —
128
(GR) — ECM ground — — —
Terminal No.
(Wire color) Description
ConditionVa l u e
(Approx.)
+ − Signal name Input/
Output
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-446
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1572 ASCD BRAKE SWITCH
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
1. Drive the vehicle for at least 5 consecut ive seconds as per the following conditions.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheel s lifted in the shop or by driving the vehicle.
If a road test is expected to be easier , it is unnecessary to lift the vehicle.
2. Check DTC.
Is DTC detected?
YES >> Proceed to EC-452, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462379
1.CHECK OVERALL FUNCTION-1
With CONSULT
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DATA MONI TOR” mode of “ENGINE” using CONSULT.
3. Check “BRAKE SW1” indication as per the following conditions.
Without CONSULT
1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector terminals as per the following.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK OVERALL FUNCTION-2
With CONSULT
Select “BRAKE SW2” and check indication as per the following conditions.
Vehicle speed More than 30 km/h (19 mph)
Selector lever Suitable position
Driving location Depress the brake pedal for more
than five seconds so as not to come
off from the above-mentioned vehi-
cle speed.
Monitor item Condition Indication
BRAKE SW1 Brake pedal Slightly depressed OFF
Fully released ON
ECM ConditionVo l ta g e
(Approx.)
Connector +–
Te r m i n a l
E10
*1
E31*2116 128 Brake pedal Slightly depressed 0 V
Fully released Battery voltage
Monitor item Condition Indication
BRAKE SW2 Brake pedal Slightly depressed ON
Fully released OFF
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P1572 ASCD BRAKE SWITCHEC-447
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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Without CONSULT
Check the voltage between ECM harness connector te rminals as per the following conditions.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> GO TO 6.
3.CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect brake pedal position switch harness connector.
3. Turn ignition switch ON.
4. Check the voltage between brake pedal position switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Perform the trouble diagnosis for power supply circuit.
4.CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between brake pedal posit ion switch harness connector and ECM harness connec-
tor.
*1: Except for California
*2: For California
4. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace error-detected parts.
5.CHECK BRAKE PEDAL POSITION SWITCH
Check the brake pedal position switch. Refer to EC-449, "Component Inspection (Brake Pedal Position
Switch)"
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace brake pedal position switch. Refer to BR-18, "Exploded View"
.
ECM
ConditionVol tag e
(Approx.)
Connector +–
Te r m i n a l
E10
*1
E31*2115 128 Brake pedal Slightly depressed Battery voltage
Fully released 0 V
+ −Vo l ta g e
Brake pedal position switch
Connector Terminal E51 1 Ground Battery voltage
+ −
Continuity
Brake pedal position switch ECM
Connector Terminal Connector Terminal
E51 2 E10
*1
E31*211 6 E x i s t e d
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P1572 ASCD BRAKE SWITCHEC-449
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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Is the inspection result normal?
YES >> GO TO 11.
NO >> Perform the trouble diagnosis for power supply circuit.
11 .CHECK STOP LAMP SWITCH SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check the continuity between stop lamp relay harness connector and ECM harness connector.
*1: Except for California
*2: For California
3. Also check harness for short to ground and to power.
Is the inspection result normal?
YES >> GO TO 12.
NO >> Repair or replace error-detected parts
12.CHECK STOP LAMP RELAY
Check the stop lamp relay. Refer to EC-450, "Component Inspection (Stop Lamp Relay)"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace stop lamp relay.
Component Inspection (Brake Pedal Position Switch)INFOID:0000000009462380
1.CHECK BRAKE PEDAL POSITION SWITCH-1
1. Turn ignition switch OFF.
2. Disconnect brake pedal position harness connector.
3. Check the continuity between brake pedal position switch terminals as per the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK BRAKE PEDAL POSITION SWITCH-2
1. Adjust brake pedal position switch installation. Refer to BR-13, "Inspection and Adjustment"
.
2. Check the continuity between brake pedal position switch terminals as per the following conditions.
+
−Voltag e
Stop lamp relay
Connector Terminal E57 5 Ground Battery voltage
+ −
Continuity
St op la mp rel ay EC M
Connector Terminal Connector Terminal
E57 3 E10
*1
E31*211 5 E x i s t e d
Brake pedal position switch
Condition Continuity
+ −
Te r m i n a l s
1 2 Brake pedal Fully released Existed
Slightly de-
pressed Not existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-450
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P1572 ASCD BRAKE SWITCH
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace brake pedal position switch. Refer to BR-18, "Exploded View"
.
Component Inspection (Stop Lamp Switch)INFOID:0000000009462381
1.CHECK STOP LAMP SWITCH-1
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check the continuity between stop lamp swit ch terminals as per the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH-2
1. Adjust stop lamp switch installation. Refer to BR-13, "Inspection and Adjustment"
.
2. Check the continuity between stop lamp swit ch terminals as per the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace stop lamp switch. Refer to BR-18, "Exploded View"
.
Component Inspection (Stop Lamp Relay)INFOID:0000000009462382
1.CHECK STOP LAMP RELAY
1. Turn ignition switch OFF.
2. Remove stop lamp relay.
Brake pedal position switch
Condition Continuity
+ −
Te r m i n a l s
1 2 Brake pedal Fully released Existed
Slightly de-
pressed Not existed
Sto p l am p s w it ch
Condition Continuity
+ −
Te r m i n a l s
1 2 Brake pedal Fully released Not existed
Slightly de-
pressed Existed
Sto p l am p s w it ch
Condition Continuity
+ −
Te r m i n a l s
1 2 Brake pedal Fully released Not existed
Slightly de-
pressed Existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P1805 BRAKE SWITCHEC-461
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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Component Inspection (Stop Lamp Switch)INFOID:0000000009462394
1.CHECK STOP LAMP SWITCH-1
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check the continuity between stop lamp switch terminals as per the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH-2
1. Adjust stop lamp switch installation. Refer to BR-13, "Inspection and Adjustment"
.
2. Check the continuity between stop lamp switch terminals as per the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace stop lamp switch. Refer to BR-18, "Exploded View"
.
Component Inspection (Stop Lamp Relay)INFOID:0000000009462395
1.CHECK STOP LAMP RELAY
1. Turn ignition switch OFF.
2. Remove stop lamp relay.
3. Check the continuity between stop lamp relay terminals as per the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace stop lamp relay.
Stop lamp switch
Condition Continuity
+ −
Te r m i n a l s
1 2 Brake pedal Fully released Not existed
Slightly de-
pressed Existed
Stop lamp switch
Condition Continuity
+ −
Te r m i n a l s
1 2 Brake pedal Fully released Not existed
Slightly de-
pressed Existed
Stop lamp relay
Condition Continuity
+-
Te r m i n a l
35 12 V direct current supply between terminals
1 and 2 Existed
No current supply Not existed
JMBIA0848ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-496
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
BRAKE PEDAL POSITION SWITCH
BRAKE PEDAL POSITION SWITCH
Component Function CheckINFOID:0000000009462428
1.CHECK BRAKE PEDAL POSI
TION SWITCH FUNCTION
With CONSULT
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “D ATA MONITOR” mode with CONSULT.
3. Check “BRAKE SW1” indication as per the following conditions.
Without CONSULT
1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector terminals.
*1: Except for California
*2: For California
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-496, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462429
1.CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect brake pedal position switch harness connector.
3. Turn ignition switch ON.
4. Check the voltage between brake pedal pos ition switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuse block (J/B) harness connector.
3. Check the continuity between brake pedal position switch harness connector and fuse block (J/B) harness connector.
Monitor item Condition Indication
BRAKE SW1 Brake pedal Slightly depressed OFF
Fully released ON
ECM Condition Voltage
Connector +–
Te r m i n a l
E10
*1
E31*2116 128 Brake pedal Slightly depressed Approx. 0 V
Fully released Battery voltage
+ -Voltage
Brake pedal position switch
Connector Terminal E51 1 Ground Battery voltage
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM