DIAGNOSIS SYSTEM (ECM)EC-57
< SYSTEM DESCRIPTION > [HR16DE]
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PERMANENT DTC SET TIMING
The setting timing of permanent DTC is stored in ECM
with the lighting of MIL when a DTC is confirmed.
DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)INFOID:0000000012431339
When emission-related ECU detects a malfunction in the emission
control systems components and/or the powertrain control compo-
nents (which affect vehicle emissions), it turns on/blinks MIL to
inform the driver that a malfunction has been detected.
1. The MIL illuminates when ignition switch is turned ON (engine is
not running).
NOTE:
Check the MIL circuit if MIL does not illuminate. Refer to EC-
456, "Diagnosis Procedure".
2. When the engine is start ed, the MIL should go off.
NOTE:
If MIL continues to illuminate/ blink, perform self-diagnoses and
inspect/repair accordingly because an emission-rela ted ECU has detected a malfunction in the emission
control systems components and/or the powertrain cont rol components (which affect vehicle emissions).
On Board Diagnosis FunctionINFOID:0000000012431340
ON BOARD DIAGNOSIS ITEM
The on board diagnostic system has the following functions.
BULB CHECK MODE
Description
This function allows damage inspection in the MIL bulb (blown, open circuit, etc.).
Operation Procedure
1. Turn ignition switch ON.
2. The MIL on the instrument panel should stay ON.
If it remains OFF, check MIL circuit. Refer to EC-456, "
Diagnosis Procedure".
SRT STATUS MODE
Description
This function allows to read if ECM has completed the self-diagnoses of major emission control systems and
components. For SRT, refer to EC-55, "
DIAGNOSIS DESCRIPTION : System Readiness Test (SRT) Code".
Operation Procedure
1. Turn ignition switch ON and wait 20 seconds.
2. SRT status is indicated as shown blow.
• ECM continues to illuminate MIL if all SRT codes are set.
SAT652J
Diagnostic test mode Function
Bulb check MIL can be checked.
SRT status ECM can read if SRT codes are set.
Malfunction warning If ECM detects a malfunction, it illuminates or blinks MIL to inform the driver that a malfunction
has been detected.
Self-diagnostic results DTCs or 1st trip DTCs stored in ECM can be read.
Accelerator pedal released position
learning ECM can learn the accelerator pedal released position. Refer to
EC-128, "
Description".
Throttle valve closed position learning ECM can learn the throttle valve closed position. Refer to EC-129, "
Description".
Idle air volume learning ECM can learn the idle air volume. Refer to EC-130, "
Description".
Mixture ratio self-learning value clear Mixture ratio self-learning value can be erased. Refer to EC-132, "
Description".
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EXL-6
< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts LocationINFOID:0000000012432767
Component DescriptionINFOID:0000000012432768
A. Instrument panelB. LH side of engine compartment C. Brake pedal area
ALLIA1573ZZ
No.Part name Description
1. Daytime running light relays 1 and 2 (if equipped) Sends power to daytime lamps when operated by the IPDM E/R.
2. Hazard switch Hazard flasher request signal is output to the BCM.
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SQUEAK AND RATTLE TROUBLE DIAGNOSESEXT-19
< SYMPTOM DIAGNOSIS >
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INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. Cluster lid A and the instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar finisher
4. Instrument panel to windshield
5. Instrument panel pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noi se. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or ra ttle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shift selector assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation pr ocedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping or moving the components or pressing on them while driving to duplicate the conditions can isolate
many of these incidents. You can usually insulate the ar eas with felt cloth tape or insulator foam blocks from
the NISSAN Squeak and Rattle Kit (J-50397) to repair the noise.
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid bumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, se curing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sun visor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
OVERHEAD CONSOLE (FRONT AND REAR)
Overhead console noises are often caused by the cons ole panel clips not being engaged correctly. Most of
these incidents are repaired by pushing up on the c onsole at the clip locations until the clips engage.
In addition look for:
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SERVICE INFORMATION FOR ELECTRICAL INCIDENTGI-43
< BASIC INSPECTION >
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This test may indicate a loose or poorly mounted sensor or relay.
Engine Compartment
There are several reasons a vehicle or engine vibration could cause an electrical complaint. Some of the
things to check for are:
• Connectors not fully seated.
• Wiring harness not long enough and is being stressed due to engine vibrations or rocking.
• Wires laying across brackets or moving components.
• Loose, dirty or corroded ground wires.
• Wires routed too close to hot components.
To inspect components under the hood, start by verifyi ng the integrity of ground connections. (Refer to Ground
Inspection described later.) First check that the system is properly grounded. Then check for loose connection
by gently shaking the wiring or components as previous ly explained. Using the wiring diagrams inspect the
wiring for continuity.
Behind the Instrument Panel
An improperly routed or improperly clamped harness can become pinched during accessory installation. Vehi-
cle vibration can aggravate a harness which is routed along a bracket or near a screw.
Under Seating Areas
An unclamped or loose harness can cause wiring to be pinched by seat components (such as slide guides)
during vehicle vibration. If the wiring runs under s eating areas, inspect wire routing for possible damage or
pinching.
HEAT SENSITIVE
• The customer's concern may occur during hot weather or after car has sat for a short time. In such cases you will want to check for a
heat sensitive condition.
• To determine if an electrical component is heat sensitive, heat the component with a heat gun or equivalent.
CAUTION:
Do not heat components above 60 °C (140° F).
• If incident occurs while heating t he unit, either replace or properly
insulate the component.
FREEZING
• The customer may indicate the incident goes away after the car warms up (winter time). The cause could be related to water freez-
ing somewhere in the wiring/electrical system.
• There are two methods to check for this. The first is to arrange for the owner to leave his car overnight. Make sure it will get cold
enough to demonstrate his complaint. Leave the car parked out-
side overnight. In the morning, do a quick and thorough diagnosis
of those electrical components which could be affected.
• The second method is to put the suspect component into a freezer long enough for any water to freeze. Reinstall the part into the car
and check for the reoccurrence of the incident. If it occurs, repair or
replace the component.
WATER INTRUSION
SGI839
SGI842
SGI843
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SQUEAK AND RATTLE TROUBLE DIAGNOSESGW-7
< SYMPTOM DIAGNOSIS >
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INSTRUMENT PANEL
Most incidents are caused by contact and movement between:
1. Cluster lid A and the instrument panel
2. Acrylic lens and combination meter housing
3. Instrument panel to front pillar finisher
4. Instrument panel to windshield
5. Instrument panel pins
6. Wiring harnesses behind the combination meter
7. A/C defroster duct and duct joint
These incidents can usually be located by tapping or moving the components to duplicate the noise or by
pressing on the components while driving to stop the noi se. Most of these incidents can be repaired by apply-
ing felt cloth tape or silicone spray (in hard to reach areas). Urethane pads can be used to insulate wiring har-
ness.
CAUTION:
Do not use silicone spray to isolate a squeak or ra ttle. If you saturate the area with silicone, you will
not be able to recheck the repair.
CENTER CONSOLE
Components to pay attention to include:
1. Shift selector assembly cover to finisher
2. A/C control unit and cluster lid C
3. Wiring harnesses behind audio and A/C control unit
The instrument panel repair and isolation pr ocedures also apply to the center console.
DOORS
Pay attention to the:
1. Finisher and inner panel making a slapping noise
2. Inside handle escutcheon to door finisher
3. Wiring harnesses tapping
4. Door striker out of alignment causing a popping noise on starts and stops
Tapping or moving the components or pressing on them while driving to duplicate the conditions can isolate
many of these incidents. You can usually insulate the ar eas with felt cloth tape or insulator foam blocks from
the NISSAN Squeak and Rattle Kit (J-50397) to repair the noise.
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid bumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, se curing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sun visor shaft shaking in the holder
3. Front or rear windshield touching headlining and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
OVERHEAD CONSOLE (FRONT AND REAR)
Overhead console noises are often caused by the cons ole panel clips not being engaged correctly. Most of
these incidents are repaired by pushing up on the c onsole at the clip locations until the clips engage.
In addition look for:
Revision: August 2015 2016 Versa Note
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HAC-10
< SYSTEM DESCRIPTION >[MANUAL AIR CONDITIONING]
COMPONENT PARTS
A. LH side of instrument panel B. Behind center of instrument panel C. Center of instrument panel
No. Component Description
1. BCM The BCM receives the fan ON and A/C ON signals from the front air control and sends a com-
pressor ON request to the ECM.
2. Fuse Block (J/B) Located in the passenger compartment, behind the left lower IP, the Fuse Block (J/B) con-
tains the front blower motor relay and several fuses required for the air conditioner control
system.
3. Blower relay The blower relay controls the flow of current to fuse 20, 21 and 22 in the Fuse Block (J/B).
The relay is connected directly to ground, and is energized when the ignition switch is in the
ON or START position.
4. Front blower motor The front blower motor varies the speed at which the air flows through the ventilation system.
5. Front blower motor resistor Ground for the blower is supplied through blower resistor and the blower speed switch. As
the switch is moved from position 1 through 4, more current is allowed to flow through the
motor, for a higher speed. This is because less resistors are in the path as the switch is
moved to a higher position. When the switch is on the highest position, all resistors are by-
passed.
6. Thermo control amp. Thermo control amp. is composed of thermistor and amplifier. When the A/C switch signal is
received from the front air control, the thermo control amp. transmits the A/C ON signal to the
BCM according to evaporator fin temperature. When the thermistor detecting temperature of
the air that passes through evaporator is extremely low, the thermo control amp. sends the
A/C OFF signal to BCM, and stops the compressor.
7. Front air control The front air control controls the operation of the A/C and heating system.
AWIIA1862ZZ
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DOOR CABLEHAC-57
< REMOVAL AND INSTALLATION > [MANUAL AIR CONDITIONING]
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5. Operate intake door lever to make sure that inner cable moves smoothly. CAUTION:
When clipping ou ter cable, do not move inner cable.
MODE DOOR CABLE
MODE DOOR CABLE : Re moval and InstallationINFOID:0000000012430765
The mode door cable is not serviced separately. Refer to HAC-52, "Removal and Installation".
MODE DOOR CABLE : AdjustmentINFOID:0000000012430766
1. Remove glove box assembly. Refer to IP-25, "Removal and Installation".
2. Disconnect mode door cable (1) from clip (A).
3. Set mode dial to VENT position.
4. Push main link (2) in the direction shown, then carefully pull outer cable to front air control side and connect clip.
5. Operate mode dial to make sure that inner cable moves smoothly. CAUTION:
When clipping ou ter cable, do not move inner cable.
AIR MIX DOOR CABLE
AIR MIX DOOR CABLE : Removal and InstallationINFOID:0000000012430767
The air mix door cable is not serviced separately. Refer to HAC-52, "Removal and Installation".
AIR MIX DOOR CABLE : AdjustmentINFOID:0000000012430768
1. Remove instrument lower panel LH. Refer to IP-24, "Removal and Installation".
2. Remove foot duct (LH). Refer to VTL-7, "
FOOT DUCT : Removal and Installation".
3. Disconnect air mix door cable (1) from clip (A).
4. Set temperature dial to full cold position.
5. Push air mix door link (2) in the direction shown, then carefully pull outer cable to front air control side and connect clip.
6. Operate temperature dial to make sure that inner cable moves smoothly. CAUTION:
When clipping ou ter cable, do not move inner cable.
JMIIA0618ZZ
JMIIA0619ZZ
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HEATING AND COOLING UNIT ASSEMBLYHA-35
< REMOVAL AND INSTALLATION >
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5. Disconnect heater hoses from heater core.
6. Remove instrument panel assembly. Refer to IP-15, "
Removal and Installation".
7. Disconnect evaporator drain hose from heating and cooling unit assembly.
8. Disconnect harness connectors, grounds, retainers, etc. , and remove bolts required to remove steering
member.
9. Remove steering member and heating and cooling unit assembly.
10. Remove heating and cooling unit assembly from steering member. Refer to HA-33, "
Exploded View".
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse O-rings.
• Apply compressor oil to new O-rings of the low-pressure flexible hose and high-pressure pipe for
installation.
• After charging refrigerant, check for leaks. Refer to HA-18, "
Leak Test".
NOTE:
When refilling engine coolant, refer to CO-9, "
Refilling".
HEATER CORE
HEATER CORE : Removal and InstallationINFOID:0000000012432020
REMOVAL
1. Remove the heating and cooling unit assembly. Refer to HA-34, "HEATING AND COOLING UNIT
ASSEMBLY : Removal and Installation".
2. Remove foot duct (LH). Refer to VTL-7, "
FOOT DUCT : Removal and Installation".
3. Remove heater packing.
4. Remove heater pipe flange.
5. Remove heater core.
INSTALLATION
Installation is in the reverse order of removal.
NOTE:
When refilling engine coolant, refer to CO-9, "
Refilling".
EVAPORATOR
EVAPORATOR : Removal and InstallationINFOID:0000000012432021
REMOVAL
1. Remove heating and cooling unit assembly. Refer to HA-34, "HEATING AND COOLING UNIT ASSEM-
BLY : Removal and Installation".
2. Remove foot duct (RH). Refer to VTL-7, "
FOOT DUCT : Removal and Installation".
3. Remove intake case. Refer to HA-33, "
Exploded View".
4. Remove expansion valve. Refer to HA-36, "
EXPANSION VALVE : Removal and Installation".
5. Remove evaporator cover and evaporator assembly.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse O-rings.
• Apply compressor oil to ne w O-rings for installation.
• Perform oil adjusting procedure afte r installing new evaporator. Refer to HA-22, "
Oil Adjusting Pro-
cedure for Components Replacement Except Compressor".
• After charging refrigerant, check for leaks. Refer to HA-18, "
Leak Test".
EXPANSION VALVE
Revision: August 2015 2016 Versa Note
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