3000GT VR-4 AWD V6-2972cc 3.0L DOHC MFI Twin Turbo (1998)
Check for an open-circuit, or a short-circuit to ground between the engine control module and the idle air control motor.
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Engine control module connector: Disconnected
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Idle air control motor connector: Disconnected
OK: STOP
NG: Repair the harness. (A1-14) (A3-28) (A4-15) (A6-29)
IDLE AIR CONTROL MOTOR CHECK
Checking the Operation Sound
(1) Check that the operation sound of the stepper motor can be heard after the ignition is switched ON (but without starting the motor).
(2) If the operation sound cannot be heard, check the stepper motor's activation circuit.
If the circuit is normal, it is probable that there is a malfunction of the stepper motor or of the engine control module.
Checking the Coil Resistance
(1) Disconnect the idle air control motor connector and connect the special tool (test hamess).
(2) Measure the resistance between terminal (2) (white clip of the special tool) and either terminal (1) (red clip) or terminal (3) (blue clip) of the
connector at the idle air control motor side.
Standard value: 28 - 33 Ohms at 20°C (68°F)
(3) Measure the resistance between terminal (5) (green clip of the special tool) and either terminal (6) (yellow clip) or terminal (4) (black clip) of
the connector at the idle air control motor side.
Standard value: 28-33 Ohms at 20°C (68°F)
