Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SUPPLEMENTAL RESTRAINT SYSTEM and SEAT BELTS articles.
| WARNING | To avoid rendering the SRS inoperative, 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 incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SUPPLEMENTAL RESTRAINT SYSTEM article. Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this article. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. |
Special Service Tool
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
SPECIAL SERVICE TOOL SPECIFICATION Tool number (Kent-Moore No.) Tool name Description - (J-48087) Battery Service Center Tests batteries. For instructions, refer to Technical Service Bulletin and Battery Service Center User Guide. - (J-44373) Model 620 Starting/Charging System Tester Tests starting and charging system. For operating instructions, refer to Technical Service Bulletin
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Commercial Service Tool
COMMERCIAL SERVICE TOOL SPECIFICATION Tool name Description Power tool Loosening bolts and nuts
How to Handle Battery
| CAUTION | If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt booster battery. After connecting battery cables, ensure that they are tightly clamped to battery terminals for good contact. Never add distilled water through the hole used to check specific gravity. |
METHODS OF PREVENTING OVER-DISCHARGE
The following precautions must be taken to prevent over-discharging a battery.
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- The battery surface (particularly its top) should always be kept clean and dry.
- The terminal connections should be clean and tight.
- At every routine maintenance, check the electrolyte level. This also applies to batteries designated as "low maintenance" and "maintenance-free".
- When the vehicle is not going to be used over a long period of time, disconnect the negative battery terminal.
- Check the charge condition of the battery. Periodically check the specific gravity of the electrolyte. Keep a close check on charge condition to prevent over-discharge.
CHECKING ELECTROLYTE LEVEL
| WARNING | Do not allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touching a battery, do not touch or rub your eyes until you have thoroughly washed your hands. If acid contacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention. |
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- Remove the cell plug using a suitable tool.
- Add distilled water up to the MAX level.
Sulfation
A battery will be completely discharged if it is left unattended for a long time and the specific gravity will become less than 1.100. This may result in sulfation on the cell plates.
To determine if a battery has been sulfated, note its voltage and current when charging it. Less current and higher voltage are observed in the initial stage of charging sulfated batteries, as shown.
A sulfated battery may sometimes be brought back into service by means of a long, slow charge, 12 hours or more, followed by a battery capacity test.
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- Read hydrometer and thermometer indications at eye level.
- Use the following chart to correct your hydrometer reading according to electrolyte temperature. Hydrometer Temperature Correction BATTERY ELECTROLYTE TEMPERATURE SPECIFICATION Battery electrolyte temperature °C (°F) Add to specific gravity reading 71 (160) 0.032 66 (150) 0.028 60 (140) 0.024 54 (130) 0.020 49 (120) 0.016 43 (110) 0.012 38 (100) 0.008 32 (90) 0.004 27 (80) 0 21 (70) -0.004 16 (60) -0.008 10 (50) -0.012 4 (40) -0.016 -1 (30) -0.020 -7 (20) -0.024 -12 (10) -0.028 -18 (0) -0.032 APPROXIMATE CHARGE CONDITION CHART Corrected specific gravity Approximate charge condition 1.260 - 1.280 Fully charged 1.230 - 1.250 3/4 charged 1.200 - 1.220 1/2 charged 1.170 - 1.190 1/4 charged 1.140 - 1.160 Almost discharged 1.110 - 1.130 Completely discharged
CHARGING THE BATTERY
| CAUTION | Do not "quick charge" a fully discharged battery. Keep the battery away from open flame while it is being charged. When connecting the charger, connect the leads first, then turn on the charger. Do not turn on the charger first, as this may cause a spark. If battery electrolyte temperature rises above 55°C (131°F), stop charging. Always charge battery at a temperature below 55°C (131°F). |
Charging Rates
| Amps | Time |
|---|---|
| 50 | 1 hour |
| 25 | 2 hours |
| 10 | 5 hours |
| 5 | 10 hours |
CHARGING TIME REFERENCE
Do not charge at more than 50 ampere rate.
Note. The ammeter reading on your battery charger will automatically decrease as the battery charges. This indicates that the voltage of the battery is increasing normally as the state of charge improves. The charging amps indicated above refer to initial charge rate. If, after charging, the specific gravity of any two cells varies more than 0.050, the battery should be replaced.
M/T Models
Power is supplied at all times
- to starter motor terminal B, and
- through 40A fusible link (letter h , located in the fuse and fusible link box)
- to ignition switch terminal B.
With the ignition switch in the START position, power is supplied
- from ignition switch terminal ST
- to IPDM E/R terminal 21.
With the ignition switch in the ON or START position, power is supplied
- through 10A fuse (No. 49, located in the IPDM E/R)
- to the clutch interlock switch terminal 1.
With the clutch pedal depressed, power is supplied
- through the clutch interlock switch terminal 2
- to IPDM E/R terminal 35.
Ground is supplied at all times
- to IPDM E/R terminals 39 and 59
- through body grounds E15 and E24.
If the IPDM E/R receives a starter relay request ON signal from the BCM over the CAN communication lines, the IPDM E/R grounds the starter relay and power is supplied
- through terminal 19 of the IPDM E/R
- to terminal S of the starter motor.
The starter motor magnetic switch energizes closing the circuit between the battery and the starter motor. The starter motor is case ground through the cylinder block. With power and ground supplied, the starter motor operates.
A/T Models
Power is supplied at all times
- to starter motor terminal B, and
- through 40A fusible link (letter h , located in the fuse and fusible link box)
- to ignition switch terminal B.
With the ignition switch in the START position, power is supplied
- from ignition switch terminal ST
- to IPDM E/R terminal 21.
With the ignition switch in the ON or START position, power is supplied
- through 10A fuse (No. 54, located in the IPDM E/R)
- to park/neutral position (PNP) switch terminal 1.
With the selector lever in the P or N position, power is supplied
- through PNP switch terminal 2
- to IPDM E/R terminal 35.
Ground is supplied at all times
- to IPDM E/R terminals 39 and 59
- through body grounds E15 and E24.
If the IPDM E/R receives a starter relay request ON signal from the BCM over the CAN communication lines, the IPDM E/R grounds the starter relay and power is supplied
- through terminal 19 of the IPDM E/R
- to terminal S of the starter motor.
The starter motor magnetic switch energizes closing the circuit between the battery and the starter motor. The starter motor is case ground through the cylinder block. With power and ground supplied, the starter motor operates.
CVT Models
Power is supplied at all times
- to starter motor terminal B, and
- through 40A fusible link (letter h , located in the fuse and fusible link box)
- to ignition switch terminal B.
With the ignition switch in the START position, power is supplied
- from ignition switch terminal ST
- to IPDM E/R terminal 21.
With the selector lever in the P or N position, power is supplied
- from the transmission control module (TCM) terminal 24
- to IPDM E/R terminal 35.
Ground is supplied at all times
- to IPDM E/R terminals 39 and 59
- through body grounds E15 and E24.
If the IPDM E/R receives a starter relay request ON signal from the BCM over the CAN network, the IPDM E/R grounds the starter relay and power is supplied
- through terminal 19 of the IPDM E/R
- to terminal S of the starter motor.
The starter motor magnetic switch energizes closing the circuit between the battery and the starter motor. The starter motor is case ground through the cylinder block. With power and ground supplied, the starter motor operates.
Note. For references to PG-Power, see POWER SUPPLY, GROUND & CIRCUIT ELEMENTS .
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Battery
| M/T, A/T | CVT | |
|---|---|---|
| Type | TR4 | Gr.51 R |
| 20 hours rate capacity | 12 V - 47 AH | 12 V - 47 AH |
| Cold Cranking Amps. (CCA) | 470 | 470 |
BATTERY SPECIFICATION
Starter
| Type | S114 - 901 | |
|---|---|---|
| HITACHI make | ||
| Reduction gear type | ||
| System voltage | 12 V | |
| No-load | Terminal voltage | 11 V |
| Current | Less than 110 A | |
| Revolution | More than 3,000 RPM | |
| Minimum diameter of commutator | 28.0 mm (1.102 in) | |
| Minimum length of brush | 10.5 mm (0.413 in) | |
| Brush spring tension | 16.2 N (1.65 kg, 3.64 lb) | |
| Clearance between bearing metal and armature shaft | Less than 0.2 mm (0.008 in) | |
| Movement "L" in height of pinion assembly | 0.3 - 2.5 mm (0.012 - 0.098 in) | |
STARTER SPECIFICATION
Generator
| Type | LR1140 - 803 |
|---|---|
| MITSUBISHI make | |
| Nominal rating | 12 V - 140 A |
| Ground polarity | Negative |
| Minimum revolution under no-load (when 13.5 V is applied) | Less than 1,200 RPM |
| Hot output current (when 13.5 V is applied) | More than 27 A/1,300 RPM More than 95 A/2,500 RPM More than 116 A/5,000 RPM |
| Regulated output voltage | 14.1 - 14.7 V |
| Minimum length of brush | More than 6.00 mm (0.236 in) |
| Brush spring pressure | 1.1 - 3.7 N (112 - 378 g, 4.00 - 13.3 oz) |
| Slip ring minimum outer diameter | More than 14.7 mm (0.579 in) |
| Rotor (field coil) resistance | 1.61 - 1.91 ohms |
GENERATOR SPECIFICATION