ignition CHRYSLER VOYAGER 2000 Diagnostic Manual

TEST ACTION APPLICABILITY
1 Ignition Off
Note: A misadjusted Brake Switch can cause this code to set.
Does the Brake Switch need to be adjusted?All
Ye s®Adjust Brake Switch as necessary.
No®Go To 2
2 Ignition Off
Disconnect the Speed Control Servo 4-Way Connector.
Note: Check connectors - Clean/repair as necessary.
Note: Ensure the Brake pedal is not depressed during the following steps.
Engine off. Ignition key on and S/C On/Off Switch ON.
Using a Voltmeter, measure the voltage of the S/C Brake Switch Output Circuit at
Speed Control Servo Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 3
No®Go To 10
3 Ignition off.
Disconnect the Speed Control Servo Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure resistance of the Gnd Circuit at Servo Connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 4
No®Repair the open Ground Circuit.
Perform Powertrain Verification Test VER-4A.
4 Ignition off
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Note: Ensure the Brake pedal is not depressed during the following steps.
With an ohmmeter, test the resistance from the S/C Power Supply Circuit to the S/C
Vent Solenoid at PCM.
Is the resistance between 35 ohms and 55 ohms?All
Ye s®Go To 5
No®Go To 7
5 Ignition off
Disconnect Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Note: Ensure the Brake Pedal is not depressed during the following steps.
With an ohmmeter, test the resistance from the S/C Power Supply Circuit to the S/C
Vacuum Solenoid Control at PCM.
Is the resistance between 35 ohms and 55 ohms?All
Ye s®Go To 6
No®Go To 7
257
SPEED CONTROL
P-1595 SPEED CONTROL SOLENOID CIRCUITS ÐContinued
ProCarManuals.com

TEST ACTION APPLICABILITY
6 Ignition off.
If there are no potential causes remaining, the Powertrain Control Module is
assumed to be defective.
View repair options.All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-4A.
7 Ignition off.
Disconnect the Powertrain Control Module.
Disconnect Speed Control Servo 4-way Connector.
Note: Check connectors - Clean/repair as necessary.
With an ohmmeter, test the resistance of the SC Vacuum Solenoid Control Circuit
from the PCM to the Servo Connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 8
No®Repair the open Speed Control Vacuum Solenoid Control Circuit.
Perform Powertrain Verification Test VER-4A.
8 Ignition off.
Disconnect the PCM.
Disconnect Speed Control Servo 4-way Connector.
Note: Check connectors - Clean/repair as necessary.
With an ohmmeter, test the resistance of the S/C Vent Solenoid Control Circuit from
the PCM to the Servo Connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 9
No®Repair the open Speed Control Vent Solenoid Control Circuit.
Perform Powertrain Verification Test VER-4A.
9 Ignition off.
If there are no potential causes remaining, the Speed Control Servo is assumed to be
defective.
View repair options.All
Repair
Replace the Speed Control Servo.
Perform Powertrain Verification Test VER-4A.
10 Ignition off.
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
Key and S/C On.
Using a Voltmeter, probe Speed Control Power Supply Ckt at the Brake Sw
Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 11
No®Go To 14
258
SPEED CONTROL
P-1595 SPEED CONTROL SOLENOID CIRCUITS ÐContinued
ProCarManuals.com

TEST ACTION APPLICABILITY
11 Ignition Off
Disconnect the Speed Control Servo 4-Way Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the S/C Brake Switch Output Circuit
from the Servo Connector to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair shorted S/C Brake Switch Output Circuit.
Perform Verification TEST VER-4A
No®Go To 12
12 Ignition Off
Disconnect the Speed Control Servo 4-Way Connector.
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
With an Ohmmeter, measure the resistance of the S/C Brake Switch Output Circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 13
No®Repair the open S/C Brake Switch Output.
Perform Powertrain Verification Test VER-4A
13 If there are no potential causes remaining, the Brake Switch is assumed to be
defective.
View repair options.All
Repair
Replace the Brake Switch.
Perform Powertrain Verification Test VER-4A.
14 Ignition Off
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the S/C Brake Switch Output Circuit
from the Brake Switch Connector to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair shorted S/C Brake Switch Output Circuit.
Perform Verification TEST VER-4A
No®Go To 15
15 Ignition off.
Disconnect the Powertrain Control Module.
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
With an ohmmeter, test resistance of the Speed Control Power Supply Ckt.
Is the resistance below 5.0 ohms?All
Ye s®Go To 16
No®Repair the open Speed Control Power Supply Circuit.
Perform Powertrain Verification Test VER-4A.
259
SPEED CONTROL
P-1595 SPEED CONTROL SOLENOID CIRCUITS ÐContinued
ProCarManuals.com

TEST ACTION APPLICABILITY
16 Ignition off.
If there are no potential causes remaining, the Powertrain Control Module is
assumed to be defective.
View repair options.All
Repair
Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-4A.
260
SPEED CONTROL
P-1595 SPEED CONTROL SOLENOID CIRCUITS ÐContinued
ProCarManuals.com

Symptom:
SPEED CONTROL BRAKE SWITCH OUTPUT
POSSIBLE CAUSES
GROUND CIRCUIT OPEN
PCM CONNECTOR OBSERVABLE DEFECT
BRAKE SWITCH DEFECTIVE
BRAKE SWITCH SENSE CIRCUIT OPEN
BRAKE SWITCH SENSE CIRCUIT SHORTED TO GROUND
PCM DEFECTIVE
TEST ACTION APPLICABILITY
1 Ignition Off
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
Key on.
Using a Voltmeter, measure the voltage of the Brake Switch Sense at the Brake
Switch Connector.
Is the voltage above 10 volts?All
Ye s®Go To 2
No®Go To 3
2 Ignition Off
Disconnect the Brake Switch Connector.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper between the Brake Switch Sense and Brake Switch Ground CKT.
With the DRB, read the Brake Switch input status.
Does the DRB show Brake SW9Released9?All
Ye s®Replace the Brake Switch.
Perform Powertrain Verification Test VER-4A
No®Repair the open Brake Switch Ground CKT.
Perform Powertrain Verification Test VER-4A.
3 Ignition Off
Disconnect the PCM.
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 4
261
SPEED CONTROL
ProCarManuals.com

TEST ACTION APPLICABILITY
4 Ignition Off
Disconnect the Brake Switch Connector.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the Brake Switch Sense Circuit from Brake Switch to
PCM.
Is the resistance below 5.0 ohms?All
Ye s®Go To 5
No®Repair the open Brake Switch Sense Circuit.
Perform Powertrain Verification Test VER-4A.
5 Ignition Off
Disconnect the Brake Switch Connector.
Disconnect the PCM.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure resistance of Brake Switch Sense Circuit from the
Brake Switch Connector to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Brake Switch Sense Circuit, shorted to ground.
Perform Powertrain Verification Test VER-4A.
No®Go To 6
6 If there are no potential causes remaining, the PCM is assumed to be defective.
View repair options.All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-4A.
262
SPEED CONTROL
SPEED CONTROL BRAKE SWITCH OUTPUT ÐContinued
ProCarManuals.com

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
ProCarManuals.com

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
ProCarManuals.com

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
ProCarManuals.com

TEST ACTION APPLICABILITY
3 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 display, press the Set Switch several times.
Does the DRB show the Set Switch pressed and released?All
Ye s®Go To 4
No®Replace the Speed Control On/Off/Set Switch.
Perform Powertrain Verification Test VER-4A.
4 Ignition On, Engine Not Running
With the DRB, monitor the Speed Control Switch inputs.
While observing display, press the Brake Pedal several times.
Does the DRB show Brake Switch Status change between pressed and released?All
Ye s®Go To 5
No®Refer to symptom SPEED CONTROL BRAKE SWITCH OUT-
PUT in the SPEED CONTROL category.
5 Ignition On, Engine Not Running
With the DRB, monitor the Speed Control Switch inputs.
While observing the display, move the Gear Selector to Drive.
Does the DRB show the Park/Neutral Switch in D/R?All
Ye s®Go To 6
No®Refer to symptom CHECKING PARK/NEUTRAL POS SWITCH
in the SPEED CONTROL category.
6 Ignition Off
Disconnect the Speed Control Servo Connector.
Note: Check connectors - Clean/repair as necessary.
Turn the Ignition on and the S/C on.
Using a Voltmeter measure voltage of the S/C Brake Switch Output Ckt at Servo
Conn.
Is the voltage above 10 volts?All
Ye s®Go To 7
No®Go To 14
7 Ignition Off
Start engine, allow to idle 1 minute.
Turn Engine off, (Ignition on).
With the DRB, actuate the Speed Control Servo Solenoids.
Does the Throttle open and close?All
Ye s®Refer to symptom SPEED CONTROL DENIED MESSAGE in the
SPEED CONTROL category.
No®Go To 8
8 Ignition Off
Inspect the Speed Control Throttle Cable.
Is the Cable disconnected or damaged?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-4A.
No®Go To 9
267
SPEED CONTROL
* CHECKING SPEED CONTROL OPERATION ÐContinued
ProCarManuals.com