MWI
FUEL LEVEL SENSOR SIGNAL CIRCUITMWI-101
< DTC/CIRCUIT DIAGNOSIS > [TYPE B]
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FUEL LEVEL SENSOR SIGNAL CIRCUIT
DescriptionINFOID:0000000012432636
The fuel level sensor unit and fuel pump detects the approx imate fuel level in the fuel tank and transmits the
fuel level signal to the combination meter.
Component Function CheckINFOID:0000000012432637
1.COMBINATION METER INPUT SIGNAL
1. Select METER/M&A on CONSULT.
2. Using FUEL METER of DATA MONITOR, compare the DATA MONITOR value with the fuel gauge posi- tion.
Does monitor value match fuel gauge reading?
YES >> Inspection End.
NO >> Replace combination meter. Refer to MWI-115, "
Removal and Installation".
Diagnosis ProcedureINFOID:0000000012432638
Regarding Wiring Diagram information, refer to MWI-79, "Wiring Diagram".
1.CHECK HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Check combination meter and fuel level sensor unit terminals (meter-side and harness-side) for poor con- nection.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace terminals or connectors.
2.CHECK FUEL LEVEL SENSOR UNIT CIRCUIT
1. Disconnect combination meter harness connector M24 and fuel level sensor unit and fuel pump harness
connector B44.
2. Check continuity between combination meter harness connector M24 terminal 6 and fuel level sensor unit
and fuel pump harness connector B44 terminal 2.
3. Check continuity between fuel level sensor unit and fuel pump harness connector B44 terminal 2 and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
Fuel gauge indication position Reference value of data monitor [L]
1A pp ro x. 3 9.7
3/4 Approx. 32.9
1/2 Approx. 22.7
1/4 Approx. 11.9
0A ppro x. 2 .7
Connector TerminalConnector Terminal Continuity
M24 6B44 2Yes
Connector Terminal
GroundContinuity
B44 2 No
Revision: August 2015 2016 Versa Note
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MWI-106
< DTC/CIRCUIT DIAGNOSIS >[TYPE B]
WASHER FLUID LEVEL SWITCH CIRCUIT
WASHER FLUID LEVEL SWITCH CIRCUIT
DescriptionINFOID:0000000012432644
Transmits the washer fluid level switch signal to the combination meter.
Diagnosis ProcedureINFOID:0000000012432645
Regarding Wiring Diagram information, refer to
MWI-79, "Wiring Diagram".
1.CHECK WASHER FLUID LEVEL SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector and washer fluid level switch connector.
3. Check continuity between combination meter harne ss connector M24 terminal 17 and washer fluid level
switch harness connector E50 terminal 1.
4. Check continuity between combination meter harness connector M24 terminal 17 and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness or connector.
2.CHECK WASHER FLUID LEVEL SWITCH GROUND CIRCUIT
Check continuity between washer fluid level switch harness connector E50 terminal 2 and ground.
Is the inspection result normal?
YES >> Inspection End.
NO >> Repair or replace harness or connector.
Component InspectionINFOID:0000000012432646
1.CHECK WASHER FLUID LEVEL SWITCH
Check continuity between washer fluid level switch terminals 1 and 2.
Is the inspection result normal?
YES >> Inspection End.
NO >> Replace washer fluid level switch. Refer to WW-59, "
Removal and Installation".
ConnectorTerminalConnector Terminal Continuity
M24 17E50 1Yes
Connector Terminal
GroundContinuity
M24 17 No
ConnectorTerminal
GroundContinuity
E50 2 Yes
TerminalWasher fluid level Continuity
1 - 2 Low
Yes
High No
Revision: August 2015 2016 Versa Note
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SQUEAK AND RATTLE TROUBLE DIAGNOSESMIR-11
< SYMPTOM DIAGNOSIS >
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1. Loose harness or harness connectors.
2. Front console map/reading lamp lens loose.
3. Loose screws at console attachment points.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of thes e incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component installed to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator installation pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine rpm or
load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.
Revision: August 2015 2016 Versa Note
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PCS-6
< SYSTEM DESCRIPTION >[IPDM E/R]
SYSTEM
RELAY CONTROL SYSTEM : Fail-safe
INFOID:0000000012433269
CAN COMMUNICATION CONTROL
When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN
communication recovers normally, it also returns to normal control.
If No CAN Communication Is Available With ECM
If No CAN Communication Is Available With BCM
Control relay Input/outputTransmit unit Control part Reference page
• Headlamp low relay
• Headlamp high relay • Low beam request signal
• High beam request signal
BCM (CAN)
• Headlamp LO
• Headlamp HI EXL-8
Tail lamp relay
Position light request signal BCM (CAN) •Parking lamp
• Side marker lamp
• License plate lamp
• Tail lamp
EXL-11
Illuminations
INL-9
• Front wiper relay
• Front wiper high relayFront wiper request signal BCM (CAN)
Front wiper motorWW-8Front wiper stop position sig-
nal Front wiper motor
Starter control relay Starter control relay signal BCM (CAN)
Starter motorSTR-8
(without Intelli-
gent Key)
STR-9
(with Intelligent
Key)
Transmission range switch
signal (CVT models)
Transmission range
switch
Clutch interlock switch signal
(M/T models) Clutch interlock switch
• Cooling fan low relay
• Cooling fan high relay Cooling fan speed request sig-
nal
ECM (CAN)
Cooling fan EC-38
A/C relayA/C compressor request sig-
nal
ECM (CAN)A/C compressor
(Magnet clutch)
HAC-11
Ignition relay-1Ignition switch ON signal BCM (CAN)
Each control unit,
sensor, actuator and
relay (Ignition power
supply) EC-35Vehicle speed signal (Meter)
Combination meter
(CAN)
Push-button ignition switch
signal Push-button ignition
switch
Control part
Fail-safe operation
Cooling fan • The cooling fan relay turn ON when the ignition switch is turned ON (Cooling fan HI operation)
• The cooling fan relay turn OFF when the ignition switch is turned OFF
A/C compressor A/C relay OFF
Generator Outputs the power generation command signal (PWM signal) 0%
Control part Fail-safe operation
Headlamp • Turns ON the headlamp low relay when the ignition switch is turned ON
• Turns OFF the headlamp low relay when the ignition switch is turned OFF
• Headlamp high relay OFF
•Parking lamp
• Side marker lamp
• License plate lamp
• Illumination
• Tail lamp • Turns ON the tail lamp relay when the ignition switch is turned ON
• Turns OFF the tail lamp relay when the ignition switch is turned OFF
Revision: August 2015
2016 Versa Note
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PCS-8
< SYSTEM DESCRIPTION >[IPDM E/R]
SYSTEM
POWER CONSUMPTION CONTROL SY STEM : System Description
INFOID:0000000012433270
SYSTEM DIAGRAM
DESCRIPTION
Outline
• IPDM E/R incorporates a power consumption control function that reduces the power consumption accord-
ing to the vehicle status.
• IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN com- munication.
Normal mode (wake-up)- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.
Low power consumption mode (sleep)- Low power consumption control is active.
- CAN transmission is stopped.
Sleep Mode Activation
• IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of theconditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communica-
tion:
- Outputting signals to actuators
- Switches or relays operating
- Output requests are being received from control units via CAN communication.
• IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep
wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.
Wake-up Operation
• IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep
wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a
sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start:
- Ignition switch ON
- An output request is received from a control unit via CAN communication.
AWMIA1529GB
Revision: August 2015 2016 Versa Note
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PCS-10
< SYSTEM DESCRIPTION >[IPDM E/R]
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
CONSULT Function (IPDM E/R)INFOID:0000000012433272
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with IPDM E/R.
AWMIA1737GB
Symptom Inspection contentsPossible cause
Any of the following components do not operate:
•Parking lamp
• Side marker lamp
• License plate lamp
•Tail lamp
• Front fog lamp
• Headlamp (HI, LO)
• Front wiper (HI, LO) Perform auto active test.
Does the applicable system op-
erate?YES BCM signal input circuit
NO • Lamp or motor
• Lamp or motor ground circuit
• Harness or connector between
IPDM E/R and applicable system
• IPDM E/R
A/C compressor does not operate Perform auto active test.
Does the magnet clutch oper-
ate?YES
• BCM signal input circuit
• CAN communication signal be-
tween BCM and ECM
• CAN communication signal be-
tween ECM and IPDM E/R
NO • Magnet clutch
• Harness or connector between
IPDM E/R and magnet clutch
• IPDM E/R
Cooling fan does not operate Perform auto active test.
Does the cooling fan operate?YES
• ECM signal input circuit
• CAN communication signal be-
tween ECM and IPDM E/R
NO • Cooling fan motor
• Harness or connector between
IPDM E/R and cooling fan motor
• IPDM E/R
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.
Revision: August 2015 2016 Versa Note
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PCS
DIAGNOSIS SYSTEM (IPDM E/R)PCS-11
< SYSTEM DESCRIPTION > [IPDM E/R]
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ECU IDENTIFICATION
The IPDM E/R part number is displayed.
SELF DIAGNOSTIC RESULT
Refer to
PCS-20, "DTCIndex".
DATA MONITOR
ACTIVE TEST
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.
Direct Diagnostic Mode
Description
Monitor Item [Unit]Main
Signals Description
MOTOR FAN REQ [1/2/3/4] ×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 running light request signal received from BCM on CAN com-
munication line
THFT HRN REQ [On/Off] Indicates theft warning horn request signal received from BCM on CAN commu-
nication line
HORN CHIRP [On/Off] Indicates horn reminder signal received from BCM on CAN communication line
Test item Description
HORN This test is able to check horn operation [On].
FRONT WIPER This test is able to check wiper motor operation [Hi/Lo/Off].
Revision: August 2015 2016 Versa Note
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PCS-16
< ECU DIAGNOSIS INFORMATION >[IPDM E/R]
IPDM E/R (INTELLIGENT POWER DI
STRIBUTION MODULE ENGINE ROOM)
7PCooling fan power sup-
ply (LOW) OutputON
or
START Cooling fan OFF
0V
Cooling fan LO Battery voltage
Cooling fan MID 4 – 8 V
Cooling fan HI Battery voltage
8 G Battery power supply Input OFF —Battery voltage
9BR Fuel pump power sup-
ply
OutputON
RUN Approximately 1 second af-
ter turning the ignition
switch ON
Battery voltage
ON Approximately 1 second af-
ter turning the ignition
switch ON 0V
10
2L Ignition switch power
supply (ON or START)
InputOFF
0V
ON or
START Battery voltage
11 G ECM relay power supply Output OFF
More than a few seconds
after turning ignition switch
OFF 0V
ON
OFF For a few seconds after
turning ignition switch OFF
Battery voltage
13
3R1
LG2Starter relay coil power
supply Input ONClutch pedal depressed
0V
Clutch pedal released Battery voltage
14 L Headlamp LOW (LH)
power supply OutputLighting switch OFF
0V
Lighting switch 2ND Battery voltage
15
1, 3LG Starter relay coil power
supply Input 0V
Battery voltage
16 P Headlamp LOW (RH)
power supply OutputLighting switch OFF
0V
Lighting switch 2ND Battery voltage
17 LG Front wiper motor LOW
power supply Output ONFront wiper switch OFF
0V
Front wiper switch LO Battery voltage
18 GR Front wiper motor HIGH
power supply
Output ONFront wiper switch OFF
0V
Front wiper switch HI Battery voltage
19 B Ground — —— —
20 BR ABS actuator and elec-
tric unit (control unit)
power supply OutputOFF
— 0V
ON or
START —B
att e ry v olt a ge
21
3G Clutch interlock switch
power supply
OutputOFF
or
ACC 0V
ON Battery voltage
21
4R Transmission range
switch power supply OutputOFF
or
ACC 0V
ON Battery voltage
22 P Illumination power sup-
ply
OutputLighting switch OFF
0V
Lighting switch 1ST Battery voltage
Te r m i n a l
Wire
color Circuit Input/
Output Ignition
switch Condition
Value
Revision: August 2015 2016 Versa Note
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