Hyundai Sonata: Electrical System
| 1. |
Be sure to disconnect the battery cable from the
negative (-) terminal of the battery.
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| 2. |
Never pull on the wires when disconnecting connectors.
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| 3. |
Locking connectors will click when the connector
is secure.
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| 4. |
Handle sensors and relays carefully. Be careful not
to drop them against other parts.
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Rubber Parts And Tubes
Always prevent gasoline or from touching rubber parts or
tubing.
Measuring Body Dimensions
| 1. |
Basically, all measurements in this manual are taken
with a tracking gauge.
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| 2. |
When a measuring tape is used, check to be sure there
is no elongation, twisting or bending.
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| 3. |
For measuring dimensions, both projected dimensions
and actual - measurement dimensions are used in this manual.
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Dimensions Projected
| 1. |
These are the dimensions measured when the measurement
points are projected from the vehicle's surface, and are the reference
dimensions used for used for body alterations.
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| 2. |
If the length of the tracking gauge probes is adjustable,
measure it by lengthening one of two probes as long as the different
value in height of the two surface.
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Measuring Actual Dimensions
| 1. |
These dimensions indicate the actual linear distance
between measurement points, and are used as the reference dimensions
when a tracking gauge is used for measurement.
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| 2. |
First adjust both probes to the same length (A=A')
before measurement.
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Measurement Point
Measurements should be taken at the center of the hole.
Checking Cables And Wires
| 1. |
Check the terminal for tightness.
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| 2. |
Check terminals and wires for corrosion from battery
electrolyte, etc.
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| 3. |
Check terminals and wires for open circuits.
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| 4. |
Check wire insulation and coating for damage, cracks
and degrading.
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| 5. |
Check the conductive parts of terminals for contact
with other metallic parts (vehicle body and other parts).
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| 6. |
Check grounded parts to verify that there is complete
continuity between their attaching bolt(s) and the vehicle's body.
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| 7. |
Check for incorrect wiring.
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| 8. |
Check that the wiring is so clamped to the prevent
contact with sharp corners of the vehicle body, etc. or hot parts (exhaust
manifold, etc.)
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| 9. |
Check that the wiring is clamped firmly to provide
enough clearance from the fan pulley, fan belt and other rotating or
moving parts.
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| 10. |
Check that the wiring has a little space so that
it can vibrate between fixed and moving parts such as the vehicle body
and the engine.
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Check Fuses
A blade type fuse test taps provided to allow checking the
fuse itself without removing if from the fuse box. The fuse is good if the test
lamp lights up when one lead is connected to the test taps (one at a time) and
the other lead is grounded. (Turn the ignition switch so that the fuse circuit
becomes operative)
Servicing The Electrical System
| 1. |
Prior to servicing the electrical system, be sure
to turn off the ignition switch and disconnect the battery ground cable.
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| 2. |
Attach the wiring harnesses with clamps so that there
is no slack. However, for any harness which passes the engine or other
vibrating parts of the vehicle, allow some slack within a range that
does not allow the engine vibrations to cause the harness to come into
contact with any of the surrounding parts and then secure the harness
by using a clamp.
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| 3. |
If any section of a wiring harness interferes with
the edge of a parts, or a corner, wrap the section of the harness with
tape or something similar in order to protect if from damage.
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| 4. |
When installing any parts, be careful not to pinch
or damage any of the wiring harness.
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| 5. |
Never throw relays, sensors or electrical parts,
or expose them to strong shock.
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| 6. |
The electronic parts used in the computer, relays,
etc. are readily damaged by heat. If there is a need for service operations
that may cause the temperature to exceed 80°C (176°F), remove the electronic
parts before hand.
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| 7. |
Loose connectors cause problems. Make sure that the
connectors are always securely fastened.
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| 8. |
When disconnecting a connector, be sure to grip only
the connector, not the wires.
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| 9. |
Disconnect connector which have catches by pressing
in the direction of the arrows shown the illustration.
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| 10. |
Connect connectors which have catches by inserting
the connectors until they make a clicking sound.
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| 11. |
When using a circuit tester to check continuity or
voltage on connector terminals, insert the test probe into the harness
side. If the connector is a sealed connector, insert the test probe
through the hole in the rubber cap until contacts the terminal, being
careful not to damage the insulation of the wires.
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| 12. |
To avoid overloading the wiring, take the electrical
current load of the optional equipment into consideration, and determine
the appropriate wire size.
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Precautions For Catalytic Converter
If a large amount of unburned gasoline flows into
the converter, it may overheat and create a fire hazard. To prevent
this observe the following precautions and explain them to your customer.
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| 1. |
Use only unleaded gasoline.
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| 2. |
Do not run the engine while the car is at rest for
a long time. Avoid running the engine at fast idle for more than 10minutes
and idle speed for more than 20 minutes.
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| 3. |
Do not measure engine compression for an extended
time. Engine compression tests must be made as rapidly as possible.
Remove the fuel pump relay before performing a compression test.
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| 4. |
Do not dispose of used catalytic converter together
with parts contaminated with gasoline or oil.
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