Idle Speed Control

IDLE SPEED CHECK PROCEDURE
This procedure is to check idle speed only. To set idle speed, refer to IDLE SPEED ADJUSTMENT PROCEDURES listed below.
CHECKING CONDITIONS:
Engine coolant temperature is 80 to 95~C (176 - 203~F).
Engine lubricant temperature is over 80~C (176~F).
Lights, electric cooling fan and all accessories are off.
Transmission is in neutral ("P" or "N" range for A/T vehicles).
Steering wheel is straight forward position (vehicles with power steering).

Location Of Diagnostic Connector:

1. Install a tachometer and a timing light, or connect the Hyundai multi-use tester to the diagnosis connector.

Tachometer Hook-up:

2. If the hyundai multi-use tester is not used, Install a tachometer.
NOTE: Insert a paper clip from the harness side, into the connector between the ignition coil and the noise filter. Connect the tachometer to the paper clip.
3. Run the engine at curb idle speed.
4. Check the basic ignition timing and adjust if necessary (see IGNITION TIMING).

BASE IGNITION TIMING: BTDC 5~ +/- 2°
(At curb idle)

5. Run the engine for more than 5 seconds at an engine speed of 2,000 to 3,000 rpm.
6. Run the engine at idle for 2 minutes.
7. Read the idling rpm. If the multi-use tester is used, press code No.22 and read the idling rpm. If it is not within the specified value, check the idle speed control system, refer to COMPUTERIZED ENGINE CONTROLS.

CURB IDLE RPM: 700 ± 100 rpm

IDLE SPEED ADJUSTMENT PROCEDURES
ADJUSTMENT CONDITIONS:
Engine coolant temperature, 176°F to 203°F.
Engine lubricant temperature, over 176°F.
Lights, electric cooling fan and all accessories, OFF.
Transmission, in neutral ("P" or "N" range for A/T vehicles).
Steering wheel, in the straight forward position (Vehicles with power steering).

Accelerator Cable Adjustment:

1. Loosen the accelerator cable.

Hyundai Multi-use Tester:

2. Connect the hyundai multi-use tester to the diagnosis connector.

Trottle Position Sensor (TPS) Connector Location:

TPS Output Test Hook-up:

3. If the hyundai multi-use tester is not used install a tachometer, and connect a digital type voltmeter between terminals 2 and 4 of the throttle position sensor (or terminals #1 and 20 of the C02-1 ECU connector).
Do not disconnect the TPS connector from the throttle body.

Tachometer Hook-up:

NOTE: Insert a paper clip, from the harness side, into the connector between the primary side of the ignition coil and the noise filter. Connect the tachometer to the paper clip.
4. Turn the ignition switch to ON (do not start the engine) and check that the TPS output voltage is within specifications.

TPS OUTPUT: 0.48 - 0.52V

Throttle Position Sensor (TPS) Adjustment:

Throttle Position Sensor (TPS) Mounting:

5. If the output is not within specification, loosen both the TPS mounting bolts and adjust by turning the TPS. Tighten the bolts securely after adjustment.
6. Turn the ignition switch OFF.
7. Start the engine and check to be sure that the idle speed is correct.

CURB IDLE: 700 ± 100rpm

8. Turn OFF the ignition switch and disconnect the battery terminal for 15 seconds or more and then reconnect. (This erases the data stored in ECU memory during the TPS adjustment).