Honda Civic 1999 DX Coupe L4 SOHC, Civic 1999 DX Coupe 1.6L SOHC MFI Workshop Manual

honda :: Honda Civic DX Coupe L4-1590cc 1.6L
SOHC MFI (1999)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Diagrams > USA

Security Control Unit

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Security Control Unit

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Antitheft Lighting Relay > Component Information > Locations

Antitheft Lighting Relay: Locations

Upper Left Kick Panel

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Antitheft Relay: Locations

Upper Left Kick Panel

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Antitheft Relay > Component Information > Locations > Page 15

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Locations

Integrated Control Unit: Locations

Rear of Under-dash Fuse/Relay Box

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Integrated Control Unit: Diagram Information and Instructions

Circuit Identification For In-Line and Fuse Box Connectors

C324

To see the configuration of a connector's cavities, look up its view number in Diagrams/Connector Views. Each view includes the color of the connector,where it is located, and what it connects to.Use the Connector Views to help locate the proper cavity when you need to probe a connector. It can be especially helpful if the connector has more thanone wire of the same color.Connector views can also be used to help diagnose multiple symptoms in separate circuits which could be caused by a single problem in a connectorshared by those circuits. Here's how:

1. Pick one of the multiple symptoms and look up the schematic for that circuit.2. Make a list of all the in-line and fuse box connectors in that schematic.3. Then, in the Connector Views, look up each connector on your list to see if circuits related to the other symptoms run through one of them. If they
do, inspect that connector for the problem.

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> Diagram Information and Instructions > Page 21

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Example:

The blower, rear window defogger, and the windshield wiper don't work. List all in-line and fuse box connectors in the blower controlscircuit and then check the Connector View (sample below). You find that C324 is common to the rear window defogger circuit and wiper/washercircuit, so you inspect C324 and find the problem, bent terminals.

Circuit Schematics

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Each schematic represents one circuit. A circuit's wires and components are arranged to show current flow, from power at the top, to ground at thebottom.

Shared Circuits

Other circuits may share power or ground terminals or wiring with the circuit shown. A wire that connects one circuit to another, for example, is cut shortand has an arrowhead at the end of it pointing in the direction of current flow. Next to the arrowhead is the name of the circuit or component whichshares that wiring. To quickly check shared wiring, check the operation of a component it serves. If that component works, you know the shared wiring isOK.

Connectors

All in-line and fuse box connectors are numbered (C725, C416, etc.). Component connectors are not numbered but are identified by the name of thecomponent. If a component has more than one connector, each connector is assigned a letter (A B, C, etc.). Below most connector numbers and

component names are PHOTO and VIEW numbers. The PHOTO number refers to a photo that shows the connector's location on the car. The VIEWnumber refers to an illustration that shows the connector face, wire colors, connector cavity numbers, and other details. The connector cavity numberingsequence begins at the top left corner of the connector. Disregard any numbers molded into the connector housing. . Disregard any numbers molded intothe connector housing.. Disregard any numbers molded into the connector housing.

Wires

Wires are identified by the abbreviated names of their colors; the second color is the color of the stripe. Wires are also identified by their location in aconnector. The number "2" next to the male and female wire terminals at C416, for example, means those terminals join in cavity 2 of connector C416.

Symbols

A complete description of schematic symbols is given in wire color abbreviations.

Component Locations

To see where a component or connector is located on the car, look up its photo number in the Location/Components section. The photo will also tell youthe color of the connector, and how many cavities it has.

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> Diagram Information and Instructions > Page 23

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

If there is no photo number below or beside a component name or a connector, ground, or terminal number, look up that name or number in theConnector-to-Harness Index. The chart lists how many cavities a connector has, where it's located, and what it connects to. The related illustration showsthe connector's location on the harness, and the harness routing.

Ground Distribution Schematics

This sample Ground Distribution schematic shows all of the components that share two ground points.

Power Distribution Schematics

Power Distribution schematics show how power is supplied from the positive battery terminal to various circuits in the car. Refer to the PowerDistribution section to get a more detailed picture of how power is supplied to the circuit you're working on.

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> Diagram Information and Instructions > Page 24

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

From Battery to Ignition Switch, Fuses, and Relays

Individual circuit schematics begin with a fuse. The first half of Power Distribution, however, shows the wiring "upstream" between the battery and thefuses.

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

From Fuses to Relays and Components

The second half of Power Distribution shows the wiring "From Fuses to Relays and Components." This can speed your troubleshooting by showingwhich circuits share fuses. If Power Distribution shows that an inoperative circuit and another circuit share a fuse, check a component in the other circuit.If it works, you know the fuse is good and power is available to the inoperative circuit.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Diagrams

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Diagrams

> Diagram Information and Instructions > Page 27

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Diagrams

> Diagram Information and Instructions > Page 28

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Wire Color Abbreviations

The following abbreviations are used to identify wire colors in the circuit schematics:BLK ............................................................................................................................................................................................................................... BlackBLU ................................................................................................................................................................................................................................. BlueBRN .............................................................................................................................................................................................................................. BrownGRN .............................................................................................................................................................................................................................. GreenGRY ................................................................................................................................................................................................................................ GrayLT BLU .................................................................................................................................................................................................................. Light BlueLT GRN ............................................................................................................................................................................................................... Light GreenORN ............................................................................................................................................................................................................................ OrangePNK ................................................................................................................................................................................................................................. PinkPUR .............................................................................................................................................................................................................................. PurpleRED .................................................................................................................................................................................................................................. RedWHT .............................................................................................................................................................................................................................. WhiteYEL ............................................................................................................................................................................................................................. Yellow

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Wire Color Codes

The following abbreviations are used to identify wire colors in the circuit schematics:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Diagrams

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

WHT..........WhiteYEL..........YellowBLK..........BlackBLU..........BlueGRN..........GreenRED..........RedORN..........OrangePNK..........PinkBRN..........BrownGRY..........GrayPUR..........PurpleLT BLU.......

Light Blue

LT GRN.......Light Green

The wire insulation has one color or one color with another color stripe. The second color is the stripe.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Diagrams > Diagram Information and Instructions > Page 32

Integrated Control Unit: Diagnostic Aids

Five Step Troubleshooting

1. Verify The Complaint

Turn on all the components in the problem circuit to check the accuracy of the customer complaint. Note the symptoms. Do not begin disassemblyor testing until you have narrowed down the problem area.

2. Analyze The Schematic

Look up the schematic for the problem circuit. Determine how the circuit is supposed to work by tracing the current paths from the power sourcethrough the circuit components to ground. Also, trace circuits that share wiring with the problem circuit. The names of circuits that share the samefuse, ground, or switch, and so on, are referred to in each circuit schematic. Try to operate any shared circuits you didn't check in step 1. If theshared circuits work, the shared wiring is OK, and the cause must be in the wiring used only by the problem circuit. If several circuits fail at thesame time, the fuse or ground is a likely cause.Based on the symptoms and your understanding of the circuit's operation, identify one or more possible causes.

3. Isolate The Problem By Testing The Circuit

Make circuit tests to check the diagnosis you made in step 2. Keep in mind that a logical, simple procedure is the key to efficient troubleshooting.Test for the most likely cause of failure first. Try to make tests at points that are easily accessible.

4. Fix The Problem

Once the specific problem is identified, make the repair. Be sure to use proper tools and safe procedures.

5. Make Sure The Circuit Works

Turn on all components in the repaired circuit in all modes to make sure you've fixed the entire problem. If the problem was a blown fuse, be sureto test all of the circuits on that fuse. Make sure no new problems turn up and the original problem does not recur.

Troubleshooting Precautions
Before Troubleshooting

1. Check the main fuse and the fuse box.2. Check the battery for damage, state of charge, and clean and tight connections.

-CAUTION:

Do not quick-charge a battery unless the battery ground cable has been disconnected, or you will damage the alternator diodes.

- Do not attempt to crank the engine with the ground cable disconnected or you will severely damage the wiring.

While You're Working

1. Make sure connectors are clean, and have no loose terminals or receptacles.

2. Make sure that connectors without wire seals are packed with dielectric (silicone) grease. Part Number: 08798-9001.3. When connecting a connector, push it until it "clicks" into place.

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

-CAUTION:

Do not pull on the wires when disconnecting a connector. Pull only on the connector housings.

-

1O megaohm

Most circuits include solid-state devices. Test the voltages in these circuits only with a or higher impedance digital multimeter.Never use a test light or analog meter on circuits that contain solid-state devices. Damage to the devices may result.

Testing For A Short With A Self-Powered Test Light or DVOM

1. Remove the blown fuse and disconnect the battery and load.

2. Connect one lead of a self-powered test light or digital volt/ohmmeter (DVOM) (switched to the lowest "OHMS" range) to the fuse terminal on the
load side.

six inches

3. Connect the other lead to a known good ground.4. Beginning near the fuse box, wiggle the harness. Continue this at convenient points about apart while watching the test light or DVOM.5. If the self-powered test light goes on or the DVOM displays a low reading or no reading , there is a short to ground in the wiring near that(zero)

point.

Testing For a Short With a Short Circuit Locator (Short Finder)

1. Remove the blown fuse. Leave the battery connected.

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

2. Connect the short finder across the battery terminals and the load (component) side of the fuse terminal.3. Close all switches in the circuit you're testing.4. Turn on the short tinder. This creates a pulsing magnetic field around the wiring between the fuse box and the short.5. Beginning at the fuse box, slowly move the short finder along the circuit wiring. The meter will show current pulses through sheet metal and body
trim. As long as the meter is between the fuse and the short, the needle will move with each current pulse. Once you move the meter past the pointof the short, the needle will stop moving. Check the wiring and connectors in this area to locate the cause of the short.

Testing For A Short With A Test Light or DVOM

1. Remove the blown fuse and disconnect the load.

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

2. Connect a test light or digital volt/ohmmeter (DVOM), switched to the appropriate DC volts range, across the fuse terminals to make sure voltage

is present. You might have to turn the ignition switch to ; check the schematic to see.ON

six inches

3. Beginning near the fuse box, wiggle the harness. Continue this at convenient points about apart while watching the test light or DVOM.4. Where the test light goes off, or the DVOM voltage drops to , there is a short to ground in the wiring near that point.zero
Always use a DVOM on high impedance circuits. A test light may not glow (even with battery voltage present).NOTE:

Testing For Continuity

When testing for continuity at a connector without wire seals, you do not have to separate the two halves of the connector. Instead, probe the connectorfrom the back. Always check both sides of the connector because dirty, corroded, and bent terminals can cause problems (no electrical contact = anopen).

1. Disconnect the negative cable from the car battery. If you're using a DVOM, place it in the lowest "OHMS" range.

2. Connect one lead of a self-powered test light or DVOM to one end of the part of the circuit you want to test.3. Connect the other lead to the other end.4. If the self-powered test light glows, there is continuity. If you're using a DVOM, a low reading or no reading (zero), means good continuity.

Testing For Voltage

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Testing for Voltage

When testing for voltage at a connector without wire seals, you do not have to separate the two halves of the connector. Instead, probe the connectorfrom the back. Always check both sides of the connector because dirty, corroded, and bent terminals can cause problems (no electrical contact = anopen).

1. Connect one lead of the test light to a known good ground, or, if you're using a digital volt ohmmeter (DVOM), place it in the appropriate DC
volts range, and connect its negative lead to ground.

2. Connect the other lead of the test light or DVOM to the point you want to check.3. If the test light glows, there is voltage present. If you're using a DVOM, note the voltage reading. It should be within one volt of measured battery
voltage.A loss of more than one volt indicates a problem.

Always use a DVOM on high impedance circuits. A test light may not glow (even with battery voltage present).NOTE:

Testing For Voltage Drop

one volt

Wires, connectors, and switches are designed to conduct current with a minimum loss of voltage. A voltage drop of more than indicates aproblem.

1. Place the digital volt/ohmmeter (DVOM) in the appropriate DC volts range. Connect the positive lead to the end of the wire (or to the connector or
switch) closest to the battery.

2. Connect the negative lead to the other end of the wire (or the other side of the connector or switch).3. Turn on the components in the circuit.4. The DVOM will show the difference in voltage between the two points. A difference, or drop, of more than indicates a problem. Checkone volt

the circuit for loose, dirty, or bent terminals.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Diagrams > Diagram Information and Instructions > Page 37

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Diagrams > Diagram Information and Instructions > Page 38

Integrated Control Unit: Electrical Diagrams

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Integrated Control Unit Part 1 0f 2

Integrated Control Unit Part 2 0f 2

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Integrated Control Unit (Part 1 Of 2)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Diagrams

> Diagram Information and Instructions > Page 41

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Integrated Control Unit (Part 2 Of 2)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Integrated Control Unit <--> [General Module] > Component Information > Diagrams > Page 42

Integrated Control Unit: Testing and Inspection

SRS components are located in this area. Review the SRS component locations, precautions, and procedures before performing repairs or service.

1. Remove the driver's dashboard lower cover and knee bolster.2. Disconnect the 10P connector from the integrated control unit.3. Remove the integrated control unit from the under-dash fuse/relay box.

All Systems

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> Page 43

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Intermittent Wiper System

4. Inspect the connector and socket terminals to be sure they are all making good contact.

- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.

-

If the terminals look OK, make the following input tests at the connector and the fuse/relay box socket.-

If any test indicates a problem, find and correct the cause, then recheck the system.

- If all the input tests prove OK, the control unit must be faulty; replace it.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Keyless Entry Module > Component Information > Locations > Photo 134

Keyless Entry Module: LocationsPhoto 134

Behind Kick Panel

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Keyless Entry Module > Component Information > Locations > Photo 134 > Page 48

Dashboard (Part 2 Of 2)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Keyless Entry Module > Component Information > Locations > Page 49

Keyless Entry Module: Testing and Inspection

1. Remove the driver's door panel.2. Disconnect the 18P connector from the control unit.

3. Inspect the connector and socket terminals to be sure they are all making good contact.

- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.

-

If the terminals look OK, make the following input tests at the connector.-

If any test indicates a problem, find and correct the cause, then recheck the system.

- If all the input tests prove OK, the control unit must be faulty; replace it.

Disconnect the 18P connector from the power door lock control unit.

To prevent damage to the actuator, apply battery voltage only momentarily.CAUTION:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Keyless Entry Module > Component Information > Locations > Page 50

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Disconnect the 18P connector from the power door lock control unit.

To prevent damage to the actuator, apply battery voltage only momentarily.CAUTION:

Reconnect the 18P connector to the power door lock control unit.

> Relays and Modules > Relays and Modules - Body and Frame > Keyless Entry Module > Component Information > Locations > Photo 134

Keyless Entry Module: LocationsPhoto 134

Behind Kick Panel

> Relays and Modules > Relays and Modules - Body and Frame > Keyless Entry Module > Component Information > Locations > Photo 134 > Page 56

Dashboard (Part 2 Of 2)

> Relays and Modules > Relays and Modules - Body and Frame > Keyless Entry Module > Component Information > Locations > Page 57

Keyless Entry Module: Testing and Inspection

1. Remove the driver's door panel.2. Disconnect the 18P connector from the control unit.

3. Inspect the connector and socket terminals to be sure they are all making good contact.

- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.

-

If the terminals look OK, make the following input tests at the connector.-

If any test indicates a problem, find and correct the cause, then recheck the system.

- If all the input tests prove OK, the control unit must be faulty; replace it.

Disconnect the 18P connector from the power door lock control unit.

To prevent damage to the actuator, apply battery voltage only momentarily.CAUTION:

> Relays and Modules > Relays and Modules - Body and Frame > Keyless Entry Module > Component Information > Locations > Page 58

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Disconnect the 18P connector from the power door lock control unit.

To prevent damage to the actuator, apply battery voltage only momentarily.CAUTION:

Reconnect the 18P connector to the power door lock control unit.

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Locations > Keyless Doorlock Control Unit

Power Door Lock Control Module: LocationsKeyless Doorlock Control Unit

Behind Kick Panel

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Locations > Keyless Doorlock Control Unit > Page 63

Power Door Lock Control Module: LocationsPower Door Lock Control Unit

Dashboard/Door

Front of Driver's Door (Frt. Pass. Similar)

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Locations > Page 64

Keyless Door Lock Control Unit (USA Only)

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Testing and Inspection > 96-98 All and 99-00 Without Keyless Entry System

Power Door Lock Control Module: Testing and Inspection96-98 All and 99-00 Without Keyless Entry System

1. Remove the driver's door panel.2. Disconnect the 12P connector from the control unit.

3. inspect the connector and socket terminals to be sure they are all making good contact.

- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.

-

If the terminals look OK, make the input tests shown in the table at the connector.-

If any test indicates a problem, find and correct the cause, then recheck the system.

- If all the input tests prove OK, the control unit must be faulty; replace it.

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Testing and Inspection > 96-98 All and 99-

00 Without Keyless Entry System > Page 67

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Disconnect the 12P connector from the power door lock control unit.

To prevent damage to the actuator, apply battery voltage only momentarily.CAUTION:

Reconnect the 12P connector to the power door lock control unit.

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Testing and Inspection > 96-98 All and 99-00 Without Keyless Entry System > Page 68

Power Door Lock Control Module: Testing and Inspection99-00 All With Keyless Entry System

1. Remove the driver's kick panel.2. Disconnect the 18P connector from the control unit.

3. Inspect the connector and socket terminals to be sure they are all making good contact.

- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.

-

If the terminals look OK, make the input tests shown in the table at the connector.-

If any test indicates a problem, find and correct the cause, then recheck the system.

- If all the input tests prove OK, the control unit must be faulty; replace it.

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Testing and Inspection > 96-98 All and 99-

00 Without Keyless Entry System > Page 69

Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Disconnect the 18P connector from the power door lock control unit.

To prevent damage to the actuator, apply battery voltage only momentarily.CAUTION:

Disconnect the 18P connector from the power door lock control unit.

To prevent damage to the actuator, apply battery voltage only momentarily.CAUTION:

Reconnect the 18P connector to the power door lock control unit.

> Relays and Modules > Relays and Modules - Body and Frame > Sunroof/Moonroof Relay <--> [Sunroof / Moonroof Relay] > Component Information > Locations

Sunroof/Moonroof Relay: Locations

Moonroof

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Civic DX Coupe L4-1590cc 1.6L SOHC MFI (1999)

Dashboard (Part 1 Of 2)

> Relays and Modules > Relays and Modules - Body and Frame > Sunroof/Moonroof Relay <--> [Sunroof / Moonroof Relay] > Component Information > Diagrams > Moonroof Close Relay

Moonroof Close Relay

> Relays and Modules > Relays and Modules - Body and Frame > Sunroof/Moonroof Relay <--> [Sunroof / Moonroof Relay] > Component Information > Diagrams > Moonroof Close Relay > Page 76

Moonroof Open Relay

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Sunroof/Moonroof Relay: Testing and InspectionMoonroof Close Relay

See Turn Signal/Hazard Relay Input Test.NOTE:

Five-terminal type:

Check for continuity between the terminals.

- There should be continuity between the No.1 and No.2 terminals when power and ground are connected to the No. 5 and No.3 terminals.

- There should be continuity between the No.1 and No.4 terminals when power is disconnected.

Moonroof Open And Close Relays

Moonroof close relay