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Idle Air Control Motor

WARNING: This page is about a different variant/trim than selected.
  1. To check idle air control motor operating sound, ensure engine coolant temperature is less than 68°F (20°C). Check that operating sound can be heard at idle air control motor when ignition switch is turned from ON position to OFF position with the engine off. Idle air control motor is mounted on throttle body and contains a Black 6-pin connector.
  2. If operating sound can be heard, idle air control motor driver circuit from Engine Control Module (ECM) is operating properly. If no operating sound can be heard, check idle air control motor driver circuit from ECM. If idle air control motor driver circuit is okay, a defective idle air control motor or ECM may exist. Go to next step.
  3. To check idle air control motor resistance, disconnect connector at idle air control motor. Install Test Harness (MD998463) on idle air control motor.
  4. Using ohmmeter, check resistance between terminals No. 1 (Red clip) and No. 2 (White clip) on test harness, and then between terminals No. 2 (White clip) and No. 3 (Blue clip) on test harness. Perform STEP 1. See Fig 1 . Resistance should be 28-33 ohms at 68°F (20°C).
  5. Using ohmmeter, check resistance between terminals No. 4 (Black clip) and No. 5 (Green clip) on test harness, and then between terminals No. 5 (Green clip) and No. 6 (Yellow clip) on test harness. Perform STEP 2. See Fig 1 . Resistance should be 28-33 ohms at 68°F (20°C).
  6. If resistance is within specification, remove test harness and go to next step. If resistance is not within specification, replace idle air control motor.
    Fig 1: Checking Idle Air Control Motor Resistance
    G96H01423Courtesy of CHRYSLER CORP.
  7. To check idle air control motor operation, remove idle air control motor from throttle body. It may be necessary to remove throttle body for idle air control motor removal.
  8. Install Test Harness (MD998463) on idle air control motor. Connect positive terminal of a 6-volt battery to White and Green clips on test harness. See Fig 2 .
  9. Connect negative terminal of 6-volt battery to specified clips on test harness in proper sequence. See IDLE AIR CONTROL MOTOR GROUNDING SEQUENCE table. See Fig 2 .
    IDLE AIR CONTROL MOTOR GROUNDING SEQUENCE

    Sequence Clips On Test Harness
    Step 1 Red & Black
    Step 2 Blue & Black
    Step 3 Blue & Yellow
    Step 4 Red & Yellow
    Step 5 Red & Black
    Step 6 (1)
    (1) Repeat step 5 back to step 1 in sequence.
  10. When connecting negative terminal to specified clips on test harness, idle air control motor should operate. A slight vibration will exist at idle air control motor and the pintle on idle air control motor should move.
  11. Replace idle air control motor if defective. Remove test harness. Reinstall idle air control motor.
Fig 2: Checking Idle Air Control Motor Operation
G96C01425Courtesy of CHRYSLER CORP.
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