engine vacuum CHRYSLER VOYAGER 2000 Diagnostic Manual

TEST ACTION APPLICABILITY
9 Ignition Off
Disconnect the Vacuum Supply to the Speed Control Servo.
Attach a Vacuum Gauge to the disconnected hose.
Start engine.
Does the Vacuum Gauge read Manifold Vacuum?All
Ye s®Go To 10
No®Repair the Vacuum Supply for a leak or restriction.
Perform Powertrain Verification Test VER-4A.
10 Ignition Off
Disconnect the Speed Control Servo Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter measure the Ground Circuit from Servo Connector to gnd.
Is the resistance below 5.0 ohms?All
Ye s®Go To 11
No®Repair the open Ground Circuit.
Perform Powertrain Verification Test VER-4A.
11 Ignition Off
Disconnect the Speed Control Servo Connector.
Note: Check connectors - Clean/repair as necessary.
Is any Terminal damaged, pushed out or miswired?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-4A.
No®Go To 12
12 Disconnect the vacuum supply from the Speed Control Servo.
Attach a vacuum gauge to the vacuum hose.
Start the Engine, allow to idle for 1 minute.
Turn engine off.
Observe Vacuum Gauge for 10 seconds.
Does the Vacuum hold for at least 10 seconds?All
Ye s®Go To 13
No®Replace the Vacuum Reservoir.
Perform Powertrain Verification Test VER-4A.
13 If there are no potential causes remaining, the S/C Servo is assumed to be defective.
View repair options.All
Repair
Replace the Speed Control Servo.
Perform Powertrain Verification Test VER-4A.
14 Ignition Off
Disconnect the Speed Control Servo Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter measure the Ground Circuit from Servo Connector to gnd.
Is the resistance below 5.0 ohms?All
Ye s®Go To 15
No®Repair the open Ground Circuit.
Perform Powertrain Verification Test VER-4A.
268
SPEED CONTROL
* CHECKING SPEED CONTROL OPERATION ÐContinued
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