section power supply, ground & circuit elements c ... · power supply, ground & circuit...

ELECTRICAL & POWER CONTROL

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POWER SUPPLY, GROUND & CIRCUIT ELEMENTS

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CONTENTS

P

POWER SUPPLY&GROUND CIRCUIT

BASIC INSPECTION .................................... 3

BATTERY ............................................................ 3How to Handle Battery ..............................................3Work Flow .................................................................5

COMPONENT DIAGNOSIS .......................... 6

POWER SUPPLY ROUTING CIRCUIT ............... 6Wiring Diagram - BATTERY POWER SUPPLY - ......6Wiring Diagram - BATTERY POWER SUPPLY FUSIBLE LINK No. I - .............................................18Wiring Diagram - BATTERY POWER SUPPLY FUSE No. 6 - ...........................................................22Wiring Diagram - BATTERY POWER SUPPLY FUSE No. 11 - .........................................................25Wiring Diagram - BATTERY POWER SUPPLY FUSE No. 34 - .........................................................27Wiring Diagram - BATTERY POWER SUPPLY FUSE No. 50 - .........................................................29Wiring Diagram - BATTERY POWER SUPPLY FUSE No. 53 - .........................................................34Wiring Diagram - ACCESSORY POWER SUP-PLY - .......................................................................39Wiring Diagram - ACCESSORY POWER SUP-PLY FUSE No. 19 - .................................................42Wiring Diagram - IGNITION POWER SUPPLY - ....45Wiring Diagram - IGNITION POWER SUPPLY FUSE No. 3 - ...........................................................55Wiring Diagram - IGNITION POWER SUPPLY FUSE No. 4 - ...........................................................58Wiring Diagram - IGNITION POWER SUPPLY FUSE No. 44 - .........................................................60Wiring Diagram - IGNITION POWER SUPPLY FUSE No. 45 - .........................................................63Fuse ........................................................................66Fusible Link .............................................................66Circuit Breaker ........................................................66

HARNESS LAYOUT .........................................67How To Read Harness Layout ................................67Outline .....................................................................68Main Harness ..........................................................69Engine Room Harness ............................................70Engine Control Harness ..........................................72Body Harness ..........................................................74Body No. 2 Harness ................................................75Room Lamp Harness ...............................................76Door Harness (Driver Side Door) ............................77Door Harness (Passenger Side Door) .....................78

HARNESS CONNECTOR .................................79Description ...............................................................79

STANDARDIZED RELAY .................................82Description ...............................................................82

FUSE BLOCK - JUNCTION BOX (J/B) ............84Fuse, Connector and Terminal Arrangement ..........84

FUSE, FUSIBLE LINK AND RELAY BOX ........85Fuse and Fusible Link Arrangement ........................85

IPDM E/R (INTELLIGENT POWER DISTRI-BUTION MODULE ENGINE ROOM) ................86

Fuse, Connector and Terminal Arrangement ..........86

PRECAUTION ..............................................87

PRECAUTIONS .................................................87Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-SIONER" .................................................................87Precaution for Battery Service .................................87Precaution for Procedure without Cowl Top Cover ....87

PREPARATION ...........................................88

PREPARATION .................................................88Special Service Tools ..............................................88

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ON-VEHICLE REPAIR ................................ 89

BATTERY .......................................................... 89Exploded View ........................................................ 89Removal and Installation ........................................ 89

BATTERY TERMINAL WITH FUSIBLE LINK ... 91Exploded View ........................................................ 91Removal and Installation ........................................ 91

SERVICE DATA AND SPECIFICATIONS (SDS) .......................................................... 92

SERVICE DATA AND SPECIFICATIONS (SDS) ................................................................. 92

Battery ..................................................................... 92

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BATTERY[POWER SUPPLY&GROUND CIRCUIT]

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< BASIC INSPECTION >

BASIC INSPECTIONBATTERYHow to Handle Battery INFOID:0000000003926418

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.• 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 oftime, disconnect the battery cable from the negative terminal. (Ifthe vehicle has an extended storage switch, turn it off.)

• Check the charge condition of the battery.Periodically check the specific gravity of the electrolyte. Keep aclose check on charge condition to prevent over-discharge.

CHECKING ELECTROLYTE LEVELWARNING:Never allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touch-ing a battery, never touch or rub your eyes until you have thoroughly washed your hands. If acid con-tacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention.

MEL040F

ELA0349D

MEL042F

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[POWER SUPPLY&GROUND CIRCUIT]BATTERY

< BASIC INSPECTION >• Remove the cell plug using a suitable tool.• Add distilled water up to the MAX level.

SulphationA battery will be completely discharged if it is left unattendedfor a long time and the specific gravity will become less than1.100. This may result in sulphation on the cell plates.To determine if a battery has been “sulphated”, note its voltageand current when charging it. As shown in the figure, less cur-rent and higher voltage are observed in the initial stage ofcharging sulphated batteries.A sulphated battery may sometimes be brought back into ser-vice by means of a long, slow charge, 12 hours or more, fol-lowed by a battery capacity test.

SPECIFIC GRAVITY CHECK1. Read hydrometer and thermometer indications at eye level.2. Use the chart below to correct your hydrometer reading accord-

ing to electrolyte temperature.

Hydrometer Temperature Correction

MEL043F

PKIA2353E

MEL042FA

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

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< BASIC INSPECTION >

CHARGING THE BATTERYCAUTION:• Never “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. Never 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

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 indi-cates that the voltage of the battery is increasing normally as the state of charge improves. The charging ampsindicated 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.

Work Flow INFOID:0000000003926419

TROUBLE DIAGNOSIS WITH BATTERY SERVICE CENTERFor battery testing, use Battery Service Center (J-48087). For details and operating instructions, refer to Tech-nical Service Bulletin and/or Battery Service Center User Guide.

−12 (10) −0.028

−18 (0) −0.032

Battery electrolyte temperature [°C (°F)] Add to specific gravity reading

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

Amps Time

50 1 hour

25 2 hours

10 5 hours

5 10 hours

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[POWER SUPPLY&GROUND CIRCUIT]POWER SUPPLY ROUTING CIRCUIT

< COMPONENT DIAGNOSIS >

COMPONENT DIAGNOSISPOWER SUPPLY ROUTING CIRCUITWiring Diagram - BATTERY POWER SUPPLY - INFOID:0000000003926420

JCMWA2117GB

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POWER SUPPLY ROUTING CIRCUIT[POWER SUPPLY&GROUND CIRCUIT]

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JCMWA2118GB

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JCMWA2119GB

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JCMWA2120GB

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JCMWA2121GB

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JCMWA2122GB

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JCMWA2123GB

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JCMWA2124GB

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JCMWA2125GB

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JCMWA2126GB

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JCMWA2127GB

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JCMWA2128GB

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< COMPONENT DIAGNOSIS >Wiring Diagram - BATTERY POWER SUPPLY FUSIBLE LINK No. I - INFOID:0000000003926421

JCMWA2129GB

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JCMWA2130GB

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JCMWA2131GB

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JCMWA2132GB

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< COMPONENT DIAGNOSIS >Wiring Diagram - BATTERY POWER SUPPLY FUSE No. 6 - INFOID:0000000003926422

JCMWA2133GB

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JCMWA2134GB

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JCMWA2135GB

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JCMWA2136GB

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JCMWA2137GB

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JCMWA2138GB

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JCMWA2139GB

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JCMWA2140GB

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JCMWA2141GB

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JCMWA2142GB

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JCMWA2143GB

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JCMWA2144GB

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JCMWA2145GB

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JCMWA2146GB

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JCMWA2147GB

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JCMWA2148GB

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JCMWA2149GB

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< COMPONENT DIAGNOSIS >Wiring Diagram - ACCESSORY POWER SUPPLY - INFOID:0000000003926429

JCMWA2150GB

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JCMWA2151GB

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JCMWA2152GB

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< COMPONENT DIAGNOSIS >Wiring Diagram - ACCESSORY POWER SUPPLY FUSE No. 19 - INFOID:0000000003926430

JCMWA2153GB

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JCMWA2154GB

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JCMWA2155GB

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< COMPONENT DIAGNOSIS >Wiring Diagram - IGNITION POWER SUPPLY - INFOID:0000000003926431

JCMWA2156GB

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JCMWA2157GB

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JCMWA2158GB

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JCMWA2159GB

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JCMWA2160GB

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JCMWA2161GB

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JCMWA2162GB

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JCMWA2163GB

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JCMWA2164GB

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JCMWA2165GB

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< COMPONENT DIAGNOSIS >Wiring Diagram - IGNITION POWER SUPPLY FUSE No. 3 - INFOID:0000000003926432

JCMWA2166GB

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JCMWA2167GB

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JCMWA2168GB

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JCMWA2169GB

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JCMWA2170GB

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JCMWA2171GB

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JCMWA2172GB

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JCMWA2173GB

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JCMWA2174GB

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JCMWA2175GB

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JCMWA2176GB

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< COMPONENT DIAGNOSIS >Fuse INFOID:0000000003926436

• If fuse is blown, be sure to eliminate cause of malfunction beforeinstalling new fuse.

• Use fuse of specified rating. Never use fuse of more than specifiedrating.

• Do not partially install fuse; always insert it into fuse holder prop-erly.

• Remove fuse for “ELECTRICAL PARTS (BAT)” if vehicle is notused for a long period of time.

Fusible Link INFOID:0000000003926437

A melted fusible link can be detected either by visual inspection or byfeeling with finger tip. If its condition is questionable, use circuittester or test lamp.

CAUTION:• If fusible link should melt, it is possible that critical circuit

(power supply or large current carrying circuit) is shorted. Insuch a case, carefully check and eliminate cause of malfunc-tion.

• Never wrap outside of fusible link with vinyl tape. Important:Never let fusible link touch any other wiring harness, vinyl orrubber parts.

Circuit Breaker INFOID:0000000003926438

The PTC thermistor generates heat in response to current flow. Thetemperature (and resistance) of the thermistor element varies withcurrent flow. Excessive current flow will cause the element's temper-ature to rise. When the temperature reaches a specified level, theelectrical resistance will rise sharply to control the circuit current.Reduced current flow will cause the element to cool. Resistance fallsaccordingly and normal circuit current flow is allowed to resume.

CEL083

1 : Fusible link

JPMIA1074ZZ

SEL109W

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HARNESS LAYOUT[POWER SUPPLY&GROUND CIRCUIT]

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< COMPONENT DIAGNOSIS >HARNESS LAYOUTHow To Read Harness Layout INFOID:0000000003926439

CONNECTOR SYMBOLMain symbols of connector (in Harness Layout) are indicated in the below.

1 : Connector model2 : Cavity3 : Male (M) and female (F) terminals4 : Connector color5 : Special type

JPMIA0113GB

JPMIA0114GB

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[POWER SUPPLY&GROUND CIRCUIT]HARNESS LAYOUT

< COMPONENT DIAGNOSIS >Outline INFOID:0000000003926440

JCMIA0325GB

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< COMPONENT DIAGNOSIS >Main Harness INFOID:0000000003926441

JCMIA0326GB

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< COMPONENT DIAGNOSIS >Engine Room Harness INFOID:0000000003926442

ENGINE COMPARTMENT

JCMIA0327GB

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< COMPONENT DIAGNOSIS >PASSENGER COMPARTMENT

JCMIA0328GB

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< COMPONENT DIAGNOSIS >Engine Control Harness INFOID:0000000003926443

ENGINE COMPARTMENT

JCMIA0329GB

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< COMPONENT DIAGNOSIS >PASSENGER COMPARTMENT

JCMIA0330GB

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PG-73


< COMPONENT DIAGNOSIS >Body Harness INFOID:0000000003926444

JCMIA0331GB

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< COMPONENT DIAGNOSIS >Body No. 2 Harness INFOID:0000000003926445

JCMIA0332GB

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< COMPONENT DIAGNOSIS >Room Lamp Harness INFOID:0000000003926446

JCMIA0333GB

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< COMPONENT DIAGNOSIS >Door Harness (Driver Side Door) INFOID:0000000003926465

JCMIA0334GB

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< COMPONENT DIAGNOSIS >Door Harness (Passenger Side Door) INFOID:0000000003926466

JCMIA0335GB

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HARNESS CONNECTOR[POWER SUPPLY&GROUND CIRCUIT]

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< COMPONENT DIAGNOSIS >HARNESS CONNECTORDescription INFOID:0000000003926452

HARNESS CONNECTOR (TAB-LOCKING TYPE)• The tab-locking type connectors help prevent accidental looseness or disconnection.• The tab-locking type connectors are disconnected by pushing or lifting the locking tab(s). Refer to the figure

below.CAUTION:Never pull the harness or wires when disconnecting the connector.

[Example]

HARNESS CONNECTOR (SLIDE-LOCKING TYPE)• A new style slide-locking type connector is used on certain systems and components, especially those

related to OBD.• The slide-locking type connectors help prevent incomplete locking and accidental looseness or disconnec-

tion.• The slide-locking type connectors are disconnected by pushing or pulling the slider. Refer to the figure

below.

SEL769DA

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[POWER SUPPLY&GROUND CIRCUIT]HARNESS CONNECTOR

< COMPONENT DIAGNOSIS >CAUTION:• Never pull the harness or wires when disconnecting the connector.• Be careful not to damage the connector support bracket when disconnecting the connector.

[Example]

HARNESS CONNECTOR (LEVER LOCKING TYPE)• Lever locking type harness connectors are used on certain control units and control modules such as ECM,

ABS actuator and electric unit (control unit), etc.• Lever locking type harness connectors are also used on super multiple junction (SMJ) connectors.• Always confirm the lever is fully locked in place by moving the lever as far as it will go to ensure full connec-

tion.CAUTION:

SEL769V

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HARNESS CONNECTOR[POWER SUPPLY&GROUND CIRCUIT]

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< COMPONENT DIAGNOSIS >Always confirm the lever is fully released (loosened) before attempting to disconnect or connect theseconnectors to avoid damage to the connector housing or terminals.

LKIA0670E

1. Control unit with single leverA. FastenB. LoosenC. Lever

2. Control unit with dual leversA. LeversB. FastenC. Loosen

3. SMJ connectorA. LeverB. FastenC. Loosen

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[POWER SUPPLY&GROUND CIRCUIT]STANDARDIZED RELAY

< COMPONENT DIAGNOSIS >STANDARDIZED RELAYDescription INFOID:0000000003926453

NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYSRelays can mainly be divided into three types: normal open, normal closed and mixed type relays.

TYPE OF STANDARDIZED RELAYS

SEL881H

1M ···················· 1 Make 2M ···················· 2 Make1T ···················· 1 Transfer 1M·1B ···················· 1 Make 1 Break

SEL882H

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PG-82

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STANDARDIZED RELAY[POWER SUPPLY&GROUND CIRCUIT]

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SEL188W

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PG-83

[POWER SUPPLY&GROUND CIRCUIT]FUSE BLOCK - JUNCTION BOX (J/B)

< COMPONENT DIAGNOSIS >FUSE BLOCK - JUNCTION BOX (J/B)Fuse, Connector and Terminal Arrangement INFOID:0000000003926454

JCMWA2177GB

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PG-84

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FUSE, FUSIBLE LINK AND RELAY BOX[POWER SUPPLY&GROUND CIRCUIT]

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< COMPONENT DIAGNOSIS >FUSE, FUSIBLE LINK AND RELAY BOXFuse and Fusible Link Arrangement INFOID:0000000003926455

JCMWA2178GB

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PG-85

[POWER SUPPLY&GROUND CIRCUIT]IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

< COMPONENT DIAGNOSIS >IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINEROOM)Fuse, Connector and Terminal Arrangement INFOID:0000000003926456

JCMWA2179GB

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PG-86

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PRECAUTIONS[POWER SUPPLY&GROUND CIRCUIT]

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< PRECAUTION >

PRECAUTIONPRECAUTIONSPrecaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" INFOID:0000000004114425

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used alongwith a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certaintypes of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRSsystem uses the seat belt switches to determine the front air bag deployment, and may only deploy one frontair 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 “SRS AIRBAG” and “SEAT BELT” of thisService Manual.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 byan authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personalinjury caused by unintentional activation of the system. For removal of Spiral Cable and Air BagModule, see the “SRS AIRBAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harnessconnectors.

Precaution for Battery Service INFOID:0000000004114426

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-ence between the window edge and the vehicle when the door is opened/closed. During normal operation, thewindow slightly raises and lowers automatically to prevent any window to vehicle interference. The automaticwindow function will not work with the battery disconnected.

Precaution for Procedure without Cowl Top Cover INFOID:0000000004114427

When performing the procedure after removing cowl top cover, coverthe lower end of windshield with urethane, etc.

PIIB3706J

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PG-87

[POWER SUPPLY&GROUND CIRCUIT]PREPARATION

< PREPARATION >

PREPARATIONPREPARATIONSpecial Service Tools INFOID:0000000003926459

Tool number(Kent-Moore No.)Tool name

Description

—(J-48087)Battery Service Center Tests battery.

For operating instructions, refer to Technical Service Bulletin and Battery Service Center User Guide.

WKIA5280E

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PG-88

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< ON-VEHICLE REPAIR >

ON-VEHICLE REPAIRBATTERYExploded View INFOID:0000000003926460

Removal and Installation INFOID:0000000003926461

REMOVAL1. Remove battery cover.2. Remove the clips (A), and remove hoodledge cover RH (1).

3. Remove cowl top cover RH. Refer to EXT-25, "Exploded View".4. Remove cover of battery positive terminal.5. Loosen battery terminal nuts (1), and disconnect both battery

cables from battery terminals. CAUTION:When disconnecting, disconnect the battery cable from thenegative terminal first.

6. Remove battery fix frame mounting nuts (2) and battery fixframe (3).

7. Remove battery.

INSTALLATIONInstall in the reverse order of removal.CAUTION:When connecting, connect the battery cable to the positive terminal first.

1 : Battery fix frame2 : Battery fix frame mounting nuts3 : Battery terminal (-)4 : Battery terminal (+)

JPMIA1075ZZ

JPMIA1076ZZ

JPMIA1077ZZ

Battery fix frame mounting nut: 3.82 N·m (0.39 kg-m, 34 in-lb)

Battery terminal nut

: 5.4 N·m (0.55 kg-m, 48 in-lb)

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PG-89

[POWER SUPPLY&GROUND CIRCUIT]BATTERY

< ON-VEHICLE REPAIR >Reset electronic systems as necessary. Refer to GI-51, "ADDITIONAL SERVICE WHEN REMOVING BAT-TERY NEGATIVE TERMINAL : Required Procedure After Battery Disconnection".

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PG-90

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BATTERY TERMINAL WITH FUSIBLE LINK[POWER SUPPLY&GROUND CIRCUIT]

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< ON-VEHICLE REPAIR >BATTERY TERMINAL WITH FUSIBLE LINKExploded View INFOID:0000000003926462

Removal and Installation INFOID:0000000003926463

REMOVAL1. Remove battery cover.2. Disconnect the battery cable from the negative terminal.3. Remove cover of battery positive terminal.4. Remove harness mounting nuts (1) and fusible link holder

mounting nut (2).5. Disconnect harness connectors (3) and remove battery terminal

with fusible link (4).

INSTALLATIONInstall in the reverse order of removal.

1 : Harness mounting nuts2 : Fusible link holder mounting nut3 : Harness connector4 : Battery terminal with fusible link

JPMIA1078ZZ

JPMIA1079ZZ

Harness mounting nut

: 13.2 N·m (1.3 kg-m, 10 ft-lb)Fusible link holder mounting nut

: 13.2 N·m (1.3 kg-m, 10 ft-lb)

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PG-91

[POWER SUPPLY&GROUND CIRCUIT]SERVICE DATA AND SPECIFICATIONS (SDS)

< SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)SERVICE DATA AND SPECIFICATIONS (SDS)Battery INFOID:0000000003926464

Type 55B24L(S)

20 hour rate capacity [V - Ah] 12 - 45

Cold cranking current (For reference value) [A] 433

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PG-92

section power supply, ground & circuit elements c ... · power supply, ground & circuit...

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