MWI
DIAGNOSIS SYSTEM (METER)MWI-19
< SYSTEM DESCRIPTION >
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Refer to MWI-27, "DTC Index".
DATA MONITOR
Display Item List
X: Applicable
Display item [Unit] MAIN
SIGNALS Description
SPEED METER
[mph or km/h] X Displays the value of vehicle speed signal.
SPEED OUTPUT
[mph or km/h] X Vehicle speed signal value transmitted to other units via CAN communication.
ODO OUTPUT
[mph or km/h] Odometer signal value transmitted to other units via CAN communication.
TACHO METER
[rpm] X Value of the engine speed signal received from ECM via CAN communication.
FUEL METER
[L] X Fuel level indicated on combination meter.
W TEMP METER
[ ° F] or [ °C] X Displays the value of engine coolant temperature signal, which is input from ECM.
ABS W/L
[On/Off] Displays [ON/OFF] condition of ABS warning indicator.
VDC/TCS IND
[ON/OFF] Displays [ON/OFF] condition of VDC OFF indicator lamp.
SLIP IND
[ON/OFF] Displays [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L
[ON/OFF] Displays [ON/OFF] condition of brake warning indicator.
DOOR W/L
[ON/OFF] Displays [ON/OFF] condition of door warning message.
TRUNK/GLAS-H
[On/Off] Displays [ON/OFF] condition of trunk warning message.
HI-BEAM IND
[ON/OFF] Displays [ON/OFF] condition of high beam indicator.
TURN IND
[On/Off] Displays [ON/OFF] condition of turn indicator.
FR FOG IND
[On/Off] Displays [ON/OFF] condition of front fog lamp indicator.
LIGHT IND
[On/Off] Displays [ON/OFF] condition of light indicator.
OIL W/L
[ON/OFF] Displays [ON/OFF] condition of low oil pressure warning message.
MIL
[ON/OFF] Displays [ON/OFF] condition of malfunction indicator.
CRUISE IND
[Off] Displays [ON/OFF] condition of CRUISE
indicator in the information display.
CRUISE W/L
[ON/OFF] Displays [ON/OFF] condition of
tire CRUISE warning message.
CVT IND
[Off] Displays [ON/OFF] condition of CVT indicator in the information display.
SET IND
[On/Off] Displays [ON/OFF] condition of SET indicator in the information display.
O/D OFF IND
[ON/OFF] Displays [ON/OFF] condition of O/D OFF indicator.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
MWI-22
< ECU DIAGNOSIS INFORMATION >
COMBINATION METER
ECU DIAGNOSIS INFORMATION
COMBINATION METER
Reference ValueINFOID:0000000009461694
VALUES ON THE DIAGNOSIS TOOL
Monitor Item Condition Value/Status
SPEED METER
[mph or km/h] Ignition switch ON While driving
Input value of vehicle speed signal
(CAN communication signal)
SPEED OUTPUT
[mph or km/h] Ignition switch ON While driving Output value of vehicle speed sig-
nal (CAN communication signal)
ODO OUTPUT
[mph or km/h] Ignition switch ON — Output value of odometer signal
(CAN communication signal)
TACHO METER
[rpm] Ignition switch ON Engine running
Input value of engine speed signal
(CAN communication signal)
FUEL METER
[L] Ignition switch ON — Input value of fuel level sensor sig-
nal
W TEMP METER
[ ° F] or [ °C] Ignition switch ON — Input value of engine coolant tem-
perature signal (CAN communica-
tion signal)
ABS W/L Ignition switch ON ABS warning lamp ON On
ABS warning lamp OFF Off
VDC/TCS IND Ignition switch ON VDC OFF indica
tor lamp ON On
VDC OFF indicato r lamp OFF Off
SLIP IND Ignition switch ON VDC warning lamp ON On
VDC warning lamp OFF Off
BRAKE W/L Ignition switch ON Brake warning lamp ON On
Brake warning lamp OFF Off
DOOR W/L Ignition switch ON Door open warning ON On
Other than the above Off
TRUNK/GLAS-H Ignition switch ON Trunk open warning ON On
Trunk open warning OFF Off
HI-BEAM IND Ignition switch ON High beam indicator lamp ON On
High beam indicator lamp OFF Off
TURN IND Ignition switch ON Turn signal indicator lamp ON On
Turn signal indicator lamp OFF Off
LIGHT IND Ignition switch ON Tail lamp indicator lamp ON On
Tail lamp indicator lamp OFF Off
FR FOG IND Ignition switch ON Front fog lamp indicator lamp ON On
Front fog lamp indicator lamp OFF Off
OIL W/L Ignition switch ON Oil pressure warning On
Oil pressure warning Off
MIL Ignition switch ON Malfunction indicator lamp ON On
Malfunction indicator lamp OFF Off
CRUISE IND Ignition switch ON CRUISE indicator ON On
CRUISE indicator OFF Off
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
MWI-74
< SYMPTOM DIAGNOSIS >
THE OIL PRESSURE WARNING CONTINUES DISPLAYING, OR DOES NOT DIS-
PLAY
THE OIL PRESSURE WARNING CONT INUES DISPLAYING, OR DOES
NOT DISPLAY
DescriptionINFOID:0000000009461742
• The low oil pressure warning message stays on when oil pressure is normal.
• The low oil pressure warning message stays off when oil pressure is low.
Diagnosis ProcedureINFOID:0000000009461743
1.CHECK COMBINATION METER INPUT
1. Start the engine and select METER/M&A on CONSULT.
2. Observe OIL W/L DATA MONITOR and the operation of the low oil pressure warning message in the
information display.
Is the inspection result normal?
YES >> Perform ECM self-diagnosis. Refer to (QR25DE) EC-77, "CONSULT Function" or (VQ35DE) EC-
601, "CONSULT Function".
NO >> Replace combination meter. Refer to MWI-82, "Removal and Installation"
.
Component Condi tion CONSULT
Low oil pressure warning message Engine running OFF
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]
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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
PCS-20
< ECU DIAGNOSIS INFORMATION >[IPDM E/R]
IPDM E/R (INTELLIGENT POWER DI
STRIBUTION MODULE ENGINE ROOM)
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 seiz ure, 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.
NOTE:
The tail lamp turns OFF when the ignition switch is turned ON.
FRONT WIPER CONTROL
IPDM E/R detects front wiper stop posit ion 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 second activation and 20 second stop five times.
NOTE:
This operation status can be confirmed on the IPDM E/ R “Data Monitor” that displays “BLOCK” for the item
“WIP PROT” while the wiper is stopped.
STARTER MOTOR PROTECTION FUNCTION
IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains
active for 90 seconds.
DTC IndexINFOID:0000000009461605
NOTE:
The details of TIME display are as follows.
• CRNT: The malfunctions that are detected now
• 1 - 39: The number is indicated when it is normal at present and a malfunction was detected in the past. It
increases like 0 → 1 → 2 ··· 38 → 39 after returning to the normal condition whenever IGN OFF → ON. It is
fixed to 39 until the self-diagnosis results are erased if it is over 39. It returns to 0 when a malfunction is
detected again in the process.
DTC Ignition switch Ignition relay Tail lamp relay
—ONON—
—OFFOFF—
B2098: IGN RELAY ON OFF ON ON (10 minutes)
B2099: IGN RELAY OFF ON OFF —
Ignition switch Front wiper switch Auto stop signal
ON OFF
Front wiper stop position signal cannot be
input 10 seconds.
ON The signal does not change for 10 seconds.
CONSULT display Fail-safe TIMENOTERefer to
No DTC is detected. Further testing may be required. — — — —
U1000: CAN COMM CIRCUIT ×CRNT 1 – 39 PCS-27
U1010: CONTROL UNIT (CAN) ×CRNT 1 – 39 PCS-28
B2098: IGN RELAY ON ×CRNT 1 – 39 PCS-29
B2099: IGN RELAY OFF — CRNT 1 – 39 PCS-30
B210B: INHIBIT relay ON stuck failure — CRNT 1 – 39 SEC-73
B210C: INHIBIT relay OFF stuck failure — CRNT 1 – 39 SEC-74
B210D: STARTER relay ON stuck failure — CRNT 1 – 39 SEC-76
B210E: STARTER relay OFF stuck failure — CRNT 1 – 39SEC-78
B210F: Interlock/NP switch ON stuck failure — CRNT 1 – 39 SEC-80
B2110: Interlock/NP switch OFF stuck failure — CRNT 1 – 39 SEC-82
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
PCS
PRECAUTIONSPCS-33
< PRECAUTION > [POWER DISTRIBUTION SYSTEM]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental
Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951597
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service t he system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery and wait at least three mi nutes before performing any service.
Precaution for WorkINFOID:0000000009461621
• When removing or disassembling each component, be ca reful not to damage or deform it. If a component
may be subject to interference, be sure to protect it with a shop cloth.
• When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a shop cloth or vinyl tape to protect it.
• Protect the removed parts with a shop cloth and prevent them from being dropped.
• Replace a deformed or damaged clip.
• If a part is specified as a non-reusabl e part, always replace it with a new one.
• Be sure to tighten bolts and nuts securely to the specified torque.
• After installation is complete, be sure to check that each part works properly.
• Follow the steps below to clean components:
- Water soluble dirt:
• Dip a soft cloth into lukewarm water, wring the water out of the cloth and wipe the dirty area.
• Then rub with a soft, dry cloth.
-Oily dirt:
• Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%) and wipe the dirty area.
• Then dip a cloth into fresh water, wring the water out of the cloth and wipe the detergent off.
• Then rub with a soft, dry cloth.
- Do not use organic solvent such as thinner, benzene, alcohol or gasoline.
- For genuine leather seats, use a genuine leather seat cleaner.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
PG-48
< DTC/CIRCUIT DIAGNOSIS >
HARNESS
ENGINE CONTROL HARNESS (QR25DE)
AAMIA0026ZZ
F 4 F 2 W / 1 6 : To E 11 D 3 F 3 7 G R / 3: Ignition coil no. 4 (With power
transistor)
B5 F3 B/2 : A/C compressor A1 F40 B/2 : Intake manifold tuning valve motor
F3 F4 — : Fusible link box (Battery) D2 F41 B/2 : Intake manifold runner control valve
motor
G5 F5 GR/4 : Battery current sensor C2 F42 B/4 : Heated oxygen sensor 2
Revision: November 20132014 Altima NAM
PG
HARNESSPG-49
< DTC/CIRCUIT DIAGNOSIS >
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B5 F6 — : Generator C2 F45 GR/2 : Knock sensor
B4 F7 B/3 : Generator F4 F46 GR/22 : CVT unit
F2 F8 B/3 : Primary speed sensor F5 F47 B/6 : Joint connector-F01
B3 F9 — : Engine ground E5 F48 B/10 : Joint connector-F02
F 3 F 1 0 B / 1 : IPDM E/R (Intelligent power distribution
module engine room) E5 F49 B/10 : Joint connector-F03
F 5 F 1 3 B R / 4 8 : E C M ( Q R 2 5 D E e x c e p t f o r C a l i f o r n i a ) A 2 F 5 1 G / 2 : Intake valve timing intermediate lock
control solenoid valve
E5 F14 B/48 : ECM (QR25DE except for California) B2 F52 B/3 : Intake manifold runner control valve
position sensor
B3 F15 — : Engine ground G4 F53 W/4 : Joint connector-F07
E5 F16 B/48 : TCM (Transmission control module) E3 F54 GR/2 : Engine coolant temperature sensor (With
QR25DE)
B2 F17 GR/2 : Fuel injector no. 1 D3 F55 B/3 : Camshaft position sensor (PHASE)
B2 F18 GR/2 : Fuel injector no. 2 D2 F57 B/6 : Electric throttle control actuator
C 2 F 1 9 G R / 2 : F u e l i n j e c t o r n o . 3 D 3 F 5 8 B / 3 : Exhaust valve timing control position
sensor
D 2 F 2 0 G R / 2 : F u e l i n j e c t o r n o . 4 A 2 F 5 9 G / 2 : Intake valve timing control solenoid
valve
E1 F23 B/3 : Output speed sensor B2 F68 GR/2 : Engine oil temperature sensor
D4 F24 GR/4 : Air fuel ratio (A/F) sensor 1 G4 F70 W/4 : Joint connector-F08
G 4 F 2 5 B R / 8 : To E 2 3 A 3 F 8 0 G / 2 : Exhaust valve timing control solenoid
valve
E 3 F 2 6 W / 2 : C o n d e n s e r G 3 F 8 3 W / 1 0 : IPDM E/R (Intelligent power distribution
module engine room)
E 4 F 2 7 — : S t a r t e r m o t o r G 3 F 8 4 W / 1 2 : IPDM E/R (Intelligent power distribution
module engine room)
E4 F28 — : Starter motor (With QR25DE) E3 F85 B/10 : Transmission range switch
C 1 F 2 9 L / 2 : EVAP canister purge volume control
solenoid valve (With QR25DE) E3 F86 B/3 : Input speed sensor
D2 F30 B/3 : Crankshaft position sensor (POS) A2 F87 B/3 : Engine oil pressure sensor
E2 F31 GR/6 : Mass air flow sensor (With QR25DE) A4 F88 GR/2 : A/C compressor
B 3 F 3 4 G R / 3 : Ignition coil no. 1 (With power
transistor) A1 F89 B/3 : Manifold absolute pressure (Map) sensor
C 3 F 3 5 G R / 3 : Ignition coil no. 2 (With power
transistor) F5 F90 BR/48 : ECM (QR25DE for California)
C 3 F 3 6 G R / 3 : Ignition coil no. 3 (With power
transistor) F5 F91 B/48 : ECM (QR25DE for California)
Revision: November 20132014 Altima NAM