set clock CHRYSLER VOYAGER 2000 Diagnostic Manual

Symptom:
SPEED CONTROL ON/OFF SWITCH
POSSIBLE CAUSES
CLOCKSPRING DEFECTIVE
PCM DEFECTIVE (SPEED CONTROL ON/OFF/SET SWITCH)
SPEED CONTROL GROUND CIRCUIT TO SWITCH OPEN
SPEED CONTROL ON/OFF SWITCH DEFECTIVE
SPEED CONTROL ON/OFF SWITCH SIGNAL CIRCUIT OPEN
SPEED CONTROL ON/OFF SWITCH SIGNAL CIRCUIT SHORT TO GROUND
SPEED CONTROL ON/OFF SWITCH TERMINAL DAMAGED
TEST ACTION APPLICABILITY
1 Ignition on, engine not running.
With the DRBIII, monitor the Speed Control Switch inputs.
While observing the display, press the Speed Control ªONº switch.
Does the DRBIII show S/C on/off ªONº?All
Ye s®Test Complete.
Perform Powertrain Verification Test VER-4A.
No®Go To 2
2 Ignition Off
Disconnect the Speed Control On/Off and Set Switch.
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 3
3 Ignition Off
Disconnect the Speed Control On/Off and Set Switch.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the S/C Ground Circuit at the S/C
ON/OFF, SET Switch Connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 4
No®Repair the open Speed Control Ground Circuit to Switch.
Perform Powertrain Verification Test VER-4A.
264
SPEED CONTROL
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TEST ACTION APPLICABILITY
4 Ignition Off
Disconnect the Speed Control On/Off and Set Switch.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire across the S/C Sw Signal Circuit to Ground Circuit.
Ignition On, Engine Not Running.
With the DRBIII, read the S/C Switch voltage.
Does the DRBIII display 0.00 volts?All
Ye s®Replace the S/C ON/OFF and SET Switch.
Perform Powertrain Verification Test VER-4A.
No®Go To 5
5 Ignition Off
Disconnect the Speed Control On/Off and Set Switch.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the S/C Switch Signal at the S/C
ON/OFF, SET Switch Connector to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Speed Control Switch Signal Circuit for a short to
ground.
Perform Powertrain Verification Test VER-4A.
No®Go To 6
6 Ignition Off
Disconnect the Powertrain Control Module.
Disconnect the Clockspring 4±way to I/P Harness.
Note: Check connectors - Clean/repair as necessary.
Using an ohmmeter, test the S/C Switch Signal Circuit, Clockspring to PCM.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Repair the open Speed Control Switch Signal Circuit.
Perform Powertrain Verification Test VER-4A.
7 Ignition Off
Disconnect the Speed Control On/Off and set Switch.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an ohmmeter, measure the S/C Switch Signal Ckt, Switch to PCM.
Is the resistance below 5.0 ohms?All
Ye s®Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-4A.
No®Go To 8
8 If there are no potential causes remaining, the Clockspring is assumed to be
defective.
View repair options.All
Repair
Replace the Clockspring.
Perform Powertrain Verification Test VER-4A.
265
SPEED CONTROL
SPEED CONTROL ON/OFF SWITCH ÐContinued
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Symptom:
* CHECKING SPEED CONTROL OPERATION
POSSIBLE CAUSES
BRAKE SWITCH DEFECTIVE
GROUND CIRCUIT OPEN
S/C BRAKE SWITCH OUTPUT CIRCUIT SHORTED TO GROUND
SPEED CONTROL BRAKE SWITCH OUTPUT SUPPLY CKT OPEN
SPEED CONTROL ON/OFF/SET SWITCH DEFECTIVE
SPEED CONTROL POWER SUPPLY CIRCUIT OPEN
SPEED CONTROL POWER SUPPLY CIRCUIT SHORTED/GROUND
SPEED CONTROL SERVO CONNECTOR OBSERVABLE DEFECT
SPEED CONTROL SWITCH DEFECTIVE
CLOCK SPRING DEFECTIVE
SPEED CONTROL SERVO DEFECTIVE
SPEED CONTROL THROTTLE CABLE DEFECTIVE
SPEED CONTROL VACUUM SUPPLY LEAKS OR RESTRICTED
PCM DEFECTIVE (SPEED CONTROL OPERATION)
VACUUM RESERVOIR DEFECTIVE
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, monitor the Speed Control Switch inputs.
While observing display, press the Speed Control ON/OFF switch.
Does the DRB show S/C ON/OFF switch9ON9?All
Ye s®Go To 2
No®Refer to symptom SPEED CONTROL ON/OFF SWITCH in the
SPEED CONTROL category.
2 Ignition On, Engine Not Running
Press the S/C ON/OFF button to select S/C ªON.º
With the DRB, monitor the Speed Control Switch inputs.
While observing the DRB, press the ACCEL/RESUME/CANCEL and DECEL
switches several times.
Do all of the Switches toggle correctly between pressed and released?All
Ye s®Go To 3
No®Go To 25
266
SPEED CONTROL
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TEST ACTION APPLICABILITY
25 Ignition On.
With the DRB Select ªInputs/Outputsº, monitor the S/C Switch.
Press and hold each switch to see change in the parameter.
Does the parameter change for each switch?All
Ye s®Go To 26
No®Replace the S/C Switch.
Perform Powertrain Verification Test VER-4A.
26 Ignition On, Engine Not Running
With the DRB, monitor the Speed Control Switch inputs.
While observing display, press the Set Switch several times.
Does the DRB show the Set Switch pressed and released?All
Ye s®Go To 27
No®Replace the Speed Control On/Off/Set Switch.
Perform Powertrain Verification Test VER-4A.
27 If there are no potential causes remaining, the Clock Spring is assumed to be
defective.
View repair options.All
Repair
Replace Clock Spring.
Perform Powertrain Verification Test VER-4A.
271
SPEED CONTROL
* CHECKING SPEED CONTROL OPERATION ÐContinued
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