Edition: May 1999 Revision: September 2000 Publication no. SM0E-1D22U7
FRONTIER MODEL D22 SERIES For vehicles equipped with the 2.4L, KA engine up to serial number 343314. The serial number is shown on the Vehicle Identification Number Plate.
QUICK REFERENCE INDEX GENERAL INFORMATION
GI
MAINTENANCE
MA
ENGINE MECHANICAL
EM
ENGINE LUBRICATION & COOLING SYSTEMS
LC
ENGINE CONTROL SYSTEM
EC
ACCELERATOR CONTROL, FUEL & EXHAUST SYSTEMS
FE
CLUTCH
CL
MANUAL TRANSMISSION
MT
AUTOMATIC TRANSMISSION
AT
TRANSFER
TF
PROPELLER SHAFT & DIFFERENTIAL CARRIER
PD
FRONT AXLE & FRONT SUSPENSION
FA
REAR AXLE & REAR SUSPENSION
RA
BRAKE SYSTEM
BR
STEERING SYSTEM
ST
RESTRAINT SYSTEM
RS
BODY & TRIM
BT
HEATER & AIR CONDITIONER
HA
ELECTRICAL SYSTEM
EL
ALPHABETICAL INDEX
IDX
© 2000 NISSAN NORTH AMERICA, INC. All rights reserved. No part of this Service Manual may be reproduced or stored in a retrieval system, or transmitted in any form, or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of Nissan North America, Inc., Gardena, California.
FOREWORD This manual contains maintenance and repair procedures for the 2000 Nissan FRONTIER equipped with the 2.4L, KA engine. In order to assure your safety and the efficient functioning of the vehicle, this manual should be read thoroughly. It is especially important that the PRECAUTIONS in the GI section be completely understood before starting any repair task. All information in this manual is based on the latest product information at the time of publication. The right is reserved to make changes in specifications and methods at any time without notice.
IMPORTANT SAFETY NOTICE The proper performance of service is essential for both the safety of the technician and the efficient functioning of the vehicle. The service methods in this Service Manual are described in such a manner that the service may be performed safely and accurately. Service varies with the procedures used, the skills of the technician and the tools and parts available. Accordingly, anyone using service procedures, tools or parts which are not specifically recommended by NISSAN must first be completely satisfied that neither personal safety nor the vehicle’s safety will be jeopardized by the service method selected.
NISSAN NORTH AMERICA, INC. Technical Service Information Department Gardena, California
GENERAL INFORMATION
SECTION
GI
GI MA EM LC
CONTENTS PRECAUTIONS AND PREPARATION............................2 Supplemental Restraint System (SRS) ‘‘AIR BAG’’............................................................................2 General Precautions ....................................................3 Precautions for Multiport Fuel Injection System or Engine Control System ...........................................5 Precautions for Three Way Catalyst............................5 Precautions for Engine Oils.........................................5 Precautions for Fuel ....................................................6 Precautions for Air Conditioning ..................................6 HOW TO USE THIS MANUAL........................................7 HOW TO READ WIRING DIAGRAMS............................9 Sample/Wiring Diagram – EXAMPL –.........................9 Description .................................................................11 HOW TO CHECK TERMINAL.......................................17 Connector and Terminal Pin Kit.................................17 How to Probe Connectors .........................................17 How to Check Enlarged Contact Spring of Terminal .....................................................................18 Waterproof Connector Inspection ..............................19 Terminal Lock Inspection ...........................................19 HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT ........................................20 Work Flow..................................................................20 Incident Simulation Tests...........................................21 Circuit Inspection .......................................................23
Control Unit Circuit Test ........................................29 HOW TO FOLLOW FLOW CHART IN TROUBLE DIAGNOSES ..................................................................30 How To Follow This Flow Chart.................................31 CONSULT CHECKING SYSTEM ..................................33 Function and System Application ..............................33 Lithium Battery Replacement ....................................33 Checking Equipment..................................................33 Loading Procedure ....................................................34 CONSULT Data Link Connector (DLC) Circuit..........34 IDENTIFICATION INFORMATION.................................35 Model Variation ..........................................................35 Identification Number.................................................37 Dimensions ................................................................39 Wheels and Tires.......................................................39 LIFTING POINTS AND TOW TRUCK TOWING...........40 Pantograph Jack........................................................40 Garage Jack and Safety Stand .................................41 2-pole Lift ...................................................................42 Tow Truck Towing ......................................................43 2-WHEEL DRIVE MODELS ..................................43 4-WHEEL DRIVE MODELS ..................................44 Towing Point ..............................................................45 Vehicle Recovery (Freeing a stuck vehicle) ..................45 TIGHTENING TORQUE OF STANDARD BOLTS ........46 SAE J1930 TERMINOLOGY LIST.................................47
EC FE CL MT AT TF PD FA RA BR ST RS BT HA EL IDX
PRECAUTIONS AND PREPARATION Observe the following precautions to ensure safe and proper servicing.
Supplemental Restraint System (SRS) ‘‘AIR BAG’’
SGI646
The Supplemental Restraint System ‘‘AIR BAG’’, used along with a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger in a frontal collision. The Supplemental Restraint System consists of air bag modules (located in the center of the steering wheel and in the instrument panel on the passenger side), a diagnosis sensor unit, a crash zone sensor (4WD models), warning lamp, wiring harness and spiral cable. The vehicle is equipped with a passenger air bag deactivation switch. Because no rear seat exists where a rear-facing child restraint can be placed, the switch is designed to turn off the passenger air bag so that a rear-facing child restraint can be used in the front passenger seat. The switch is located in the center of the instrument panel, near the ashtray. When the switch is turned to the ON position, the passenger air bag is enabled and could inflate in a frontal collision. When the switch is turned to the OFF position, the passenger air bag is disabled and will not inflate in a frontal collision. A passenger air bag OFF indicator on the instrument panel lights up when the passenger air bag is switched OFF. The driver air bag always remains enabled and is not affected by the passenger air bag deactivation switch. Information necessary to service the system safely is included in the RS section of this Service 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 should be performed by an authorized NISSAN dealer. ● Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. ● Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Manual. SRS wiring harnesses are covered with yellow insulation either just before the harness connectors or on the complete harness, for easy identification. ● The vehicle is equipped with a passenger air bag deactivation switch which can be operated by the customer. When the passenger air bag is switched OFF, the passenger air bag is disabled and will not inflate in a frontal collision. When the passenger air bag is switched ON, the passenger air bag is enabled and could inflate in a frontal collision. After SRS maintenance or repair, make sure the passenger air bag deactivation switch is in the same position (ON or OFF) as when the vehicle arrived for service.
GI-2
PRECAUTIONS AND PREPARATION General Precautions
GI
●
Do not operate the engine for an extended period of time without proper exhaust ventilation. MA Keep the work area well ventilated and free of any inflammable materials. Special care should be taken when handling any inflammable or poisonous materials, such as gasoline, refrig- EM erant gas, etc. When working in a pit or other enclosed area, be sure to properly ventilate the area before working with hazardous materials. LC Do not smoke while working on the vehicle.
●
Before jacking up the vehicle, apply wheel chocks or other tire blocks to the wheels to prevent the vehicle from moving. After jacking up the vehicle, support the vehicle weight with safety stands at the points designated for proper lifting before working on the vehicle. These operations should be done on a level surface. When removing a heavy component such as the engine or transaxle, be careful not to lose your balance and drop it. Also, do not allow it to strike adjacent parts, especially the brake tubes and master cylinder.
EC
Before starting repairs which do not require battery power: Turn off ignition switch. Disconnect the negative battery terminal.
AT
SGI285
●
FE CL MT
SGI231 ●
TF PD FA
SEF289H ●
To prevent serious burns: Avoid contact with hot metal parts. Do not remove the radiator cap when the engine is hot.
RA BR ST RS
SGI233 ●
BT
Before servicing the vehicle: Protect fenders, upholstery and carpeting with appropriate covers. Take caution that keys, buckles or buttons do not scratch paint. HA
EL IDX SGI234
GI-3
PRECAUTIONS AND PREPARATION General Precautions (Cont’d) Clean all disassembled parts in the designated liquid or solvent prior to inspection or assembly. ● Replace oil seals, gaskets, packings, O-rings, locking washers, cotter pins and self-locking nuts, etc. with new ones. ● Replace inner and outer races of tapered roller bearings and needle bearings as a set. ● Arrange the disassembled parts in sequence with their assembled locations. ● Do not touch the terminals of electrical components which use microcomputers (such as ECM). Static electricity may damage internal electronic components. ● After disconnecting vacuum or air hoses, attach a tag to indicate the proper connection. ● Use only the fluids and lubricants specified in this manual. ● Use approved bonding agent, sealants or their equivalents when required. ● Use tools and recommended special tools where specified for safe and efficient service repairs. ● When repairing the fuel, oil, water, vacuum or exhaust systems, check all affected lines for leaks. ● Dispose of drained oil or the solvent used for cleaning parts in an appropriate manner. ● Do not attempt to top off the fuel tank after the fuel pump nozzle shuts off automatically. Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire. WARNING: To prevent ECM from storing the diagnostic trouble codes, do not carelessly disconnect the harness connectors which are related to the engine control system. The connectors should be disconnected only when working according to the WORK FLOW of TROUBLE DIAGNOSES in EC section. ●
GI-4
PRECAUTIONS AND PREPARATION Precautions for Multiport Fuel Injection System GI or Engine Control System ●
● ● AGI011
Before connecting or disconnecting any harness connector for MA the multiport fuel injection system or ECM: Turn ignition switch to OFF position. Disconnect negative battery terminal; otherwise, there may be EM damage to ECM. Before disconnecting pressurized fuel line from fuel pump to injectors, be sure to release fuel pressure. LC Be careful not to jar components such as ECM and mass air flow sensor.
Precautions for Three Way Catalyst
EC
If a large amount of unburned fuel flows into the catalyst, the catalyst temperature will be excessively high. To prevent this, follow the FE instructions below: ● Use unleaded gasoline only. Leaded gasoline will seriously CL damage the three way catalyst. ● When checking for ignition spark or measuring engine compression, make tests quickly and only when necessary. ● Do not run engine when the fuel tank level is low; otherwise, MT the engine may misfire causing damage to the catalyst. Do not place the vehicle on inflammable material. Keep inflam- AT mable material off the exhaust pipe and three way catalyst.
Precautions for Engine Oils
TF
Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin contact with used oil. PD If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.
HEALTH PROTECTION PRECAUTIONS ● ● ● ● ● ● ● ●
● ● ● ●
Avoid prolonged and repeated contact with oils, particularly used engine oils. Wear protective clothing, including oil resistant gloves when practicable. Do not put oily rags in pockets. Avoid contaminating clothes, particularly underclothing, with oil. Heavily soiled clothing and oil-impregnated footwear should not be worn. Overalls must be cleaned regularly. First aid treatment should be obtained immediately for open cuts and wounds. Use barrier creams, applying them before each work period, to help the removal of oil from the skin. Wash with soap and water to ensure all oil is removed (skin cleansers and nail brushes will help). Preparations containing lanolin replace the natural skin oils which have been removed. Do not use gasoline, kerosene, diesel fuel, gas oil, thinners or solvents for cleaning skin. If skin disorders develop, obtain medical advice without delay. Where practicable, degrease components prior to handling. Where there is a risk of eye contact, eye protection should be worn, for example, chemical goggles or face shields. In addition, an eye wash facility should be provided.
GI-5
FA RA BR ST RS BT HA EL IDX
PRECAUTIONS AND PREPARATION Precautions for Engine Oils (Cont’d) ENVIRONMENTAL PROTECTION PRECAUTIONS Burning used engine oil in small space heaters or boilers can be recommended only for units of approved design. The heating system must meet the requirements of HM Inspectorate of Pollution for small burners of less than 0.4 MW. If in doubt, check with the appropriate local authority and/or manufacturer of the approved appliance. Dispose of used oil and used oil filters through authorized waste disposal contractors to licensed waste disposal sites, or to the waste oil reclamation trade. If in doubt, contact the local authority for advice on disposal facilities. It is illegal to pour used oil on the ground, down sewers, drains, or into water sources. The regulations concerning pollution will vary between regions.
Precautions for Fuel Use unleaded gasoline with an octane rating of at least 87 AKI (Anti-Knock Index) number (research octane number 91). CAUTION: Using a fuel other than that specified could adversely affect the emission control devices and systems, and could also affect the warranty coverage validity. Under no circumstances should a leaded gasoline be used, since this will damage the three way catalyst.
Precautions for Air Conditioning Use an approved refrigerant recovery unit anytime the air conditioner system must be discharged. Refer to HA section [‘‘HFC-134a (R-134a) Service Procedure’’, ‘‘SERVICE PROCEDURES’’] for specific instructions.
GI-6
HOW TO USE THIS MANUAL ● ● ● ● ● ●
AN ALPHABETICAL INDEX is provided at the end of this manual so that you can rapidly find the item and page you are searching for. A QUICK REFERENCE INDEX, a black tab (e.g., ) is provided on the first page. You can quickly find the first page of each section by matching it to the section’s black tabs. THE CONTENTS are listed on the first page of each section. THE TITLE is indicated on the upper portion of each page and shows the part or system. THE PAGE NUMBER of each section consists of two letters designating the particular section combined with a number (e.g., ‘‘BR-5’’). THE LARGE ILLUSTRATIONS are exploded views (see example below). These contain tightening torques, lubrication points, section number of the PARTS CATALOG (e.g., SEC. 440) and other information necessary to perform repairs. The illustrations should be used in reference to service matters only. When ordering parts, refer to the appropriate PARTS CATALOG.
GI MA EM LC EC FE CL MT AT TF PD FA RA BR
SBR364AC ●
THE SMALL ILLUSTRATIONS show items not shown in the previous large illustrations. These include ST important steps such as inspection points, use of special tools, hidden fasteners and special or unique procedures. A step-by-step format for assembly, inspection and adjustment is presented for complicated units such as RS the automatic transaxle.
BT HA EL IDX
GI-7
HOW TO USE THIS MANUAL The following SYMBOLS AND ABBREVIATIONS are used:
●
,
: : : : : : P s
SDS LH, RH FR, RR M/T A/T
●
● ● ●
: : : : : : :
Tightening torque Should be lubricated with grease. Unless otherwise indicated, use recommended multi-purpose grease. Should be lubricated with oil. Sealing point Checking point Always replace after every disassembly. Apply petroleum jelly. Apply ATF. Service Data and Specifications Left-Hand, Right-Hand Front, Rear Manual Transaxle/Transmission Automatic Transaxle/Transmission
, 4WD 2WD A/C P/S Tool SAE
: : : : : :
ATF D1 D2 D3 D4 OD 22 21 12 11
: : : : : : : : : :
4-Wheel Drive 2-Wheel Drive Air Conditioner Power Steering Special Service Tools Society of Automotive Engineers, Inc. Automatic Transmission Fluid Drive range 1st gear Drive range 2nd gear Drive range 3rd gear Drive range 4th gear Overdrive 2nd range 2nd gear 2nd range 1st gear 1st range 2nd gear 1st range 1st gear
The UNITS given in this manual are primarily expressed as the SI UNIT (International System of Unit), and alternatively expressed in the metric system and in the yard/pound system. ‘‘Example’’ Tightening torque: 59 - 78 Nzm (6.0 - 8.0 kg-m, 43 - 58 ft-lb) TROUBLE DIAGNOSES are included in sections dealing with complicated components. SERVICE DATA AND SPECIFICATIONS are contained at the end of each section for quick reference of data. The captions WARNING and CAUTION warn you of steps that must be followed to prevent personal injury and/or damage to some part of the vehicle. WARNING indicates the possibility of personal injury if instructions are not followed. CAUTION indicates the possibility of component damage if instructions are not followed. BOLD TYPED STATEMENTS except WARNING and CAUTION give you helpful information.
GI-8
HOW TO READ WIRING DIAGRAMS GI
Sample/Wiring Diagram – EXAMPL – ●
For Description, refer to GI-11.
MA EM LC EC FE CL MT AT TF PD FA RA BR ST RS BT HA EL IDX YGI001
GI-9
HOW TO READ WIRING DIAGRAMS Sample/Wiring Diagram – EXAMPL – (Cont’d) OPTIONAL SPLICE
SGI942
GI-10
HOW TO READ WIRING DIAGRAMS GI
Description Number
Item
1 s
Power condition
s
Fusible link
3 s
Fusible link/fuse location
2
Description
MA
●
This shows the condition when the system receives battery positive voltage (can be operated).
●
The double line shows that this is a fusible link. The open circle shows current flow in, and the shaded circle shows current flow out.
EM
●
This shows the location of the fusible link or fuse in the fusible link or fuse box. For arrangement, refer to EL section (‘‘POWER SUPPLY ROUTING’’).
LC
●
●
4 s
Fuse
●
The single line shows that this is a fuse. The open circle shows current flow in, and the shaded circle shows current flow out.
EC
5 s
Current rating
●
This shows the current rating of the fusible link or fuse.
FE
s
●
6 s 7 s 8 s 9 s 10 s 11 s 12 s 13 s
14 s
Connectors
Optional splice
●
The open circle shows that the splice is optional depending on vehicle application.
Splice
●
The shaded circle shows that the splice is always on the vehicle.
●
This arrow shows that the circuit continues to an adjacent page. The A will match with the A on the preceding or next page.
Page crossing Common connector Option abbreviation Relay Connectors
●
Option description
s
Switch
17 s
Assembly parts
18 s
Cell code
CL MT AT
●
The dotted lines between terminals show that these terminals are part of the same connector.
●
This shows that the circuit is optional depending on vehicle application.
●
This shows an internal representation of the relay. For details, refer to EL section (‘‘STANDARDIZED RELAY’’).
PD
●
This shows that the connector is connected to the body or a terminal with bolt or nut.
FA
●
This shows a code for the color of the wire. B = Black BR = Brown W = White OR = Orange R = Red P = Pink G = Green PU = Purple L = Blue GY = Gray Y = Yellow SB = Sky Blue LG = Light Green CH = Dark Brown DG = Dark Green When the wire color is striped, the base color is given first, followed by the stripe color as shown below: Example: L/W = Blue with White Stripe
Wire color
15 s 16
s
This shows that connector E3 is female and connector M1 is male. ● The G/R wire is located in the 1A terminal of both connectors. ● Terminal number with an alphabet (1A, 5B, etc.) indicates that the connector is SMJ connector. Refer to GI-16.
TF
RA BR ST RS
●
This shows a description of the option abbreviation used on the page.
●
This shows that continuity exists between terminals 1 and 2 when the switch is in the A position. Continuity exists between terminals 1 and 3 when the switch is in the B position.
BT
●
Connector terminal in component shows that it is a harness incorporated assembly.
HA
●
This identifies each page of the wiring diagram by section, system and wiring diagram page number.
s
s
s
s
EL
● 19 s
Current flow arrow
Arrow indicates electric current flow, especially where the direction of standard flow (vertically downward or horizontally from left to right) is difficult to follow. ● A double arrow ‘‘b—c’’ shows that current can flow in either direction depending on circuit operation.
GI-11
IDX
HOW TO READ WIRING DIAGRAMS Description (Cont’d) Number
Item ●
This shows that the system branches to another system identified by cell code (section and system).
● ●
This arrow shows that the circuit continues to another page identified by cell code. The C will match with the C on another page within the system other than the next or preceding pages.
Shielded line
●
The line enclosed by broken line circle shows shield wire.
Component box in wave line
●
This shows that another part of the component is also shown on another page (indicated by wave line) within the system.
Component name
●
This shows the name of a component.
●
This shows the connector number. The letter shows which harness the connector is located in. Example: M: main harness. For detail and to locate the connector, refer to EL section (‘‘Main Harness’’, ‘‘HARNESS LAYOUT’’). A coordinate grid is included for complex harnesses to aid in locating connectors.
20 s
System branch
s
Page crossing
21
22 s 23 s 24 s
Description
●
25 s
Connector number
26 s
Ground
27 s
Ground
28 s
Connector views
29 s
Common component
30 s
Connector color
31 s
Fuse and fusible link box
32 s
Reference area
●
The line spliced and grounded under wire color shows that ground line is spliced at the grounded connector.
●
This shows the ground connection. For detail ground distribution, refer to ‘‘GROUND DISTRIBUTION’’ in EL section.
●
This area shows the connector faces of the components in the wiring diagram on the page.
●
Connectors enclosed in broken line show that these connectors belong to the same component.
●
This shows a code for the color of the connector. For code meaning, refer to wire color codes, number 14 of this chart.
●
This shows the arrangement of fusible link(s) and fuse(s), used for connector views of ‘‘POWER SUPPLY ROUTING’’ in EL section. The open square shows current flow in, and the shaded square shows current flow out.
●
This shows that more information on the Super Multiple Junction (SMJ) and Joint Connectors (J/C) exists on the foldout page. Refer to GI-16 for details.
s
GI-12
HOW TO READ WIRING DIAGRAMS Description (Cont’d) CONNECTOR SYMBOLS
GI
Most connector symbols in wiring diagrams are shown from the terminal side. ● Connector symbols shown from the terminal side are enclosed MA by a single line and followed by the direction mark .
EM ●
●
Connector symbols shown from the harness side are enclosed by a double line and followed by the direction mark .
LC
Certain systems and components, especially those EC related to OBD, may use a new style slide-locking type harness connector. For description and how to disconnect, refer to EL section, ‘‘Description’’, ‘‘HARFE NESS CONNECTOR’’.
CL MT SGI364 ●
AT Male and female terminals Connector guides for male terminals are shown in black and female terminals in white in wiring diagrams. TF
PD FA RA BR ST RS SGI363
BT HA EL IDX
GI-13
HOW TO READ WIRING DIAGRAMS Description (Cont’d) Harness indication ● ●
M33 ) indicate harness Connector numbers in a signal oval (s connectors. Letter designations next to test meter probes indicate harness (connector) wire colors.
Component indication ●
Connector numbers in a double oval ( F211 ) indicate component connectors.
AGI070
SWITCH POSITIONS Switches are shown in wiring diagrams as if the vehicle is in the ‘‘normal’’ condition. A vehicle is in the ‘‘normal’’ condition when: ● ignition switch is OFF, ● doors, hood and trunk lid/back door are closed, ● pedals are not depressed, and ● parking brake is released.
SGI860
GI-14
HOW TO READ WIRING DIAGRAMS Description (Cont’d) DETECTABLE LINES AND NON-DETECTABLE LINES
GI
In some wiring diagrams, two kinds of lines with different thicknesses are used to represent wires. ● A line with regular thickness (wider line) represents a ‘‘detect- MA able line for DTC (Diagnostic Trouble Code)’’. A ‘‘detectable line for DTC’’ is a circuit in which ECM can detect malfunctions EM with the on board diagnostic system. ● A line with less thickness (thinner line) represents a ‘‘non-detectable line for DTC’’. A ‘‘non-detectable line for DTC’’ is a circuit in which ECM cannot detect malfunctions with the on LC board diagnostic system.
EC FE CL MT AGI086
AT
MULTIPLE SWITCH
The continuity of multiple switch is described in two ways as shown below. TF ● The switch chart is used in schematic diagrams. ● The switch diagram is used in wiring diagrams.
PD FA RA BR ST RS BT HA EL IDX AGI033
GI-15
HOW TO READ WIRING DIAGRAMS Description (Cont’d) FOLDOUT PAGE The foldout page should be opened when reading a wiring diagram.
Super multiple junction (SMJ) In a wiring diagram, SMJ connectors include a letter of the alphabet in the terminal number. SMJ connector numbers are shown in the Reference Area. Terminal arrangement can be found on the foldout page. If connector numbers are shown in Reference Area, these connector symbols are not shown in Connector Area. For terminal arrangement of these connectors, refer to the foldout page at the end of this manual.
Joint connector Joint connector symbols are shown in Connector Area of the wiring diagram. Inside wiring layout and joint connector terminal arrangement can be found on the foldout page.
SGI943
GI-16
HOW TO CHECK TERMINAL Connector and Terminal Pin Kit
GI
Use the connector and terminal pin kit listed below when replacing connectors or terminals. The connector and terminal pin kit contains some of the most commonly used NISSAN connectors and ter- MA minals. Tool number (Kent-Moore No.) Tool name
EM
Description
LC
— (J38751-95NI) Connector and terminal pin kit — (J42992-98KIT) OBD Terminal Repair Kit
EC FE CL AGI121
How to Probe Connectors
MT
Connector damage and an intermittent connection can result from improperly probing of the connector during circuit checks. The probe of a digital multimeter (DMM) may not correctly fit the AT connector cavity. To correctly probe the connector, follow the procedures below using a ‘‘T’’ pin. For the best contact grasp the ‘‘T’’ TF pin using an alligator clip.
PD FA PROBING FROM HARNESS SIDE
RA
Standard type (not waterproof type) connector should be probed from harness side with ‘‘T’’ pin. BR ● If the connector has a rear cover such as a ECM connector, remove the rear cover before probing the terminal. ST ● Do not probe waterproof connector from harness side. Damage to the seal between wire and connector may result. RS SGI841
PROBING FROM TERMINAL SIDE
BT
Female terminal ●
●
There is a small notch above each female terminal. Probe HA each terminal with the ‘‘T’’ pin through the notch. Do not insert any object other than the same type male EL terminal into female terminal.
IDX SEL265V
GI-17
HOW TO CHECK TERMINAL How to Probe Connectors (Cont’d) ●
Some connectors do not have a notch above each terminal. To probe each terminal, remove the connector retainer to make contact space for probing.
SEL266V
Male terminal Carefully probe the contact surface of each terminal using a ‘‘T’’ pin Do not bend terminal.
SEL267V
How to Check Enlarged Contact Spring of Terminal An enlarged contact spring of a terminal may create intermittent signals in the circuit. If the intermittent open circuit occurs, follow the procedure below to inspect for open wires and enlarged contact spring of female terminal.
1. Assemble a male terminal and approx. 10 cm (3.9 in) of wire. Use a male terminal which matches the female terminal. 2. Disconnect the suspected faulty connector and hold it terminal side up.
SEL270V
3.
While holding the wire of the male terminal, try to insert the male terminal into the female terminal. Do not force the male terminal into the female terminal with your hands.
SEL271V
GI-18
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