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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Hyundai Sonata (2001 release)

general info. full specifications. diagnostics. hints. tips. tricks
Hyundai Sonata
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Sonata
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Instrumentation and sensors






Removal and installation of the instrument cluster
Disconnect the negative battery terminal.

Location screws cladding dash
Fig. 7.40. Location screws cladding dash


Remove the screws and remove the trim dash (see. Fig. 7.40).

Location screws dash
Fig. 7.41. Location screws dash


Remove the screws and the instrument cluster (see. Fig. 7.41).

Test instrumentation and sensors
Speedometer
Adjust tire pressure.
Place the vehicle on the stand to check the speedometer.
Place wedges under the rear wheels.
Check whether the speedometer within the tolerance given in the technical data.

WARNINGS
When checking the speedometer sharply, do not press the clutch pedal and do not increase / decrease speed.
Tire wear and improper pressure in them result in an increase in the error rate measurement.

Tachometer
Connect the scanner to the diagnosis connector or install a tachometer.
When the engine Compare the scanner tachometer readings and compare them with the technical data. If the range of values is too large, replace tachometer.

A WARNING
Improper connection of the tachometer will damage semiconductor devices inside the tachometer.
When removing and installing the tachometer be careful - do not drop or bump it.

The fuel gauge
Disconnect the connector from the fuel gauge fuel level sensor.
Connect a test lamp power 3.4 W (12 V) to terminals "1" and "6" harness connector.
Turn the key in the ignition switch in the ?�ON?� position and make sure the light is on and the pointer indicates a full tank of fuel.
Fuel Level Sensor
Disconnect the connector from the fuel level sensor.
Ohmmeter measure resistance between contacts "1" and "6" for different positions of the float.
Rated fuel sensor resistance:
- 3 ohms at full tank;
- 32.5 ohms, if the tank is half full;
- 110 ohms with an empty tank.
Make sure that the resistance changes smoothly when the float is moved from the position "E" (empty) to the ?�F?� (full).
Sensor Low Fuel
Connect a test lamp power 3.4 W (12 V) and battery low fuel sensor.
The warning lamp should not illuminate until the sensor is immersed in water, and should light up after removing the sensor from the water.

A WARNING
If there is a fault, replace the sensor assembly.
After checking carefully clean the probe and install it in the fuel tank.

Coolant temperature
In the engine compartment, disconnect the connector from the coolant temperature sensor.
Turn on the ignition and check that the arrow pointer indicates ?�COOL?� (cold).
Switch off the ignition.
Connect a test lamp power 3.4 W (12 V) between the harness connector and "weight".
Turn on the ignition and check that the warning lamp flashes and an arrow indicator shows ?�HOT?� (hot).
If there is any deviation, replace the sensor, then recheck the system.
Coolant temperature
Measure with an ohmmeter resistance between the sensor and the "weight" at different values of the ambient temperature. The dependence of the resistance of the sensor temperature is shown in Table. 10.5.

Table 10.5
The dependence of the resistance of the coolant temperature sensor from ambient temperature
Instrumentation and sensors

Oil pressure sensor
Believe conductivity presence between the contact sensor and the "weight" with the engine off.
Believe no conduction between the contact sensor and the "weight" with the engine running.
If the sensor does not work properly, replace it.
The indicator lamp oil pressure
When the ignition voltage is supplied to the control lamp through the closed contacts the oil pressure sensor - light illuminates. After starting the engine and increase the engine oil pressure sensor contacts open, the electrical circuit is interrupted and the indicator lamp turns off. The cold oil is more viscous, providing a sharp increase in oil pressure and helps to turn off the lamp immediately after starting the engine. When starting a warm engine at the height of summer, when oil viscosity is reduced, the pressure in the lubrication system is reduced and the control lamp goes out only after increasing the speed of the crankshaft of the engine.
Disconnect the connector from the sensor and connect to "weight" contact connector at the harness side.
Turn on the ignition and check that the warning lamp lit oil pressure. Otherwise, check if the warning lamp or an electrical circuit.
Sensor insufficient level of brake fluid
Disconnect the connector from the sensor to insufficient brake fluid level set by the side of the brake fluid reservoir.
Make sure available conductivity between contacts "1" and "2" sensor with forced lowering of the float sensor.
The indicator lamp insufficient brake fluid level and the parking brake
When raising the parking brake lever switch located at the base of the handbrake lever, an electrical circuit connects the lamp power to "weight". When lowering the handbrake lamp should go.
The brake fluid level in the reservoir is defined by a float connected to the contacts on the tank cap. If the fluid level was reduced to the minimum, make contact, managed float, the electric power supply circuit lamps connected to "weight" - warning lamp.
Start up the engine.
Lower the parking brake lever.
Disconnect the connector from the sensor to insufficient brake fluid level.
Connect pin terminal at the harness side with "mass" and make sure the test lamp lit insufficient level of brake fluid.
Fault warning lights and indicators, their causes and solutions are listed in Table. 10.6.

Table 10.6
Fault warning lights and signs, their possible causes and remedies
Instrumentation and sensors




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