SERVICE MANUAL
  Applies to: Hyundai Coupe/Tiburon 1998-2000
GROUP
Fuel System MFI Control System
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CIRCUIT DIAGRAMá
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DTC - P1510, P1513, P1552, P1553 (IDLE SPEED CONTROL (ISC) ACTUATOR)á
TROUBLESHOOTING HINTS

Open or short circuit is observed in idle air control system when ignition switch is turned on.

TROUBLESHOOTING HINTS

Mechanical problems are observed in the idle air control system.

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HARNESS INSPECTION PROCEDUREá
ACTUATOR INSPECTION
  1. Disconnect the connector at the idle speed control actuator.

  1. Measure the resistance between terminals.

    RESISTANCE SPECIFICATION
    Terminal 1 and 2 10.5-14 O
    SPECIFICATION
    Terminal 2 and 3 10.-12.5 OHM [at 20░C (68░F)]
  1. Connect the connector at the idle speed control actuator.

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IDLE SPEED CONTROL (ISC) ACTUATORá

The idle speed control actuator is the double coil type and has two coils. The two coils are driven by separate driver stages in the ECM. Depending on the pulse duty factor, the equilibrium of the magnetic forces of the two coils will result in different angles of the motor. In parallel to the throttle valve, a bypass hose line is arranged, where the idle speed actuator is inserted in.