Checking Speed Control Servo (Vacuum Test)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 Dodge Intrepid, 2003 Chrysler Intrepid, 2003 Chrysler Concorde, 2003 Chrysler 300M, and 2002 Dodge Intrepid. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
DO NOT connect jumper wire between ground and servo terminal No. 1 in this step.
- Turn ignition off. Disconnect Speed Control (S/C) servo connector. Turn ignition on. Press S/C ON/OFF button to turn S/C system on. Connect a jumper wire between servo connector (harness side) terminal No. 3 (Dark Blue/Red wire) and servo terminal No. 3. Connect jumper wires between ground and servo (component side) terminals No. 2 and 4. See Fig 1. Go to next step.
- Using a hand-held vacuum pump, apply 10-15 in. Hg vacuum to servo. If servo pulls cable, replace servo. See SPEED CONTROL SERVO under REMOVAL & INSTALLATION. If servo does not pull cable, leave jumper wires connected and go to next step.
- Connect a jumper wire between ground and servo terminal No. 1. Apply 10-15 in. Hg vacuum to servo. Cable should retract and hold as long as vacuum is applied. If cable retracts and vacuum holds, leave jumper wires and vacuum pump connected and go to next step. If cable does not retract and/or vacuum does not hold, replace servo. See SPEED CONTROL SERVO under REMOVAL & INSTALLATION.
- Wait one minute. If cable remains retracted and vacuum holds for one minute, leave jumper wires and vacuum pump connected and go to next step. If cable does not remain retracted and/or vacuum does not hold for one minute, replace servo. See SPEED CONTROL SERVO under REMOVAL & INSTALLATION.
- Disconnect jumper wire from servo terminal No. 3. If cable returns to rest position, servo is operating properly at this time. If cable does not return to rest position, replace servo. See SPEED CONTROL SERVO under REMOVAL & INSTALLATION.