Chrysler PT Cruiser 2001 Service Manual Supplement page 2680

SPEED CONTROL
*CHECKING SPEED CONTROL OPERATION WITH NO DTC'S PRESENT
—
Continued
TEST
6 Turn the ignition off.
Disconnect the Clockspring harness connector (instrument panel harness side).
Disconnect the PCM harness connector.
Measure the resistance of the Speed Control Switch Signal circuit from the PCM to
the Clockspring Connector.
Is the resistance below 5.0 ohms?
Yes → Go To 7
→ Repair open Speed Control Switch Signal circuit PCM to Clock-
No
7 Turn the ignition off.
Disconnect the Clockspring harness connector (Instrument Panel harness side).
Using a 12-volt Test Light connected to 12-volts, check the Speed Control Switch
Ground circuit at the Clockspring connector.
Is the test light illuminated and bright?
Yes → Go To 8
→ Repair open Speed Control Switch ground circuit.
No
8 Turn the ignition off.
Disconnect the Speed Control Switch harness connector.
Disconnect the Clockspring harness connector (Instrument Panel side).
Measure the resistance of the Speed Control Switch Ground circuit between the
Clockspring connector and the Speed Control Switch connector.
Is the resistance below 5.0 ohms?
Yes → Go To 9
→ Repair open ground circuit from Clockspring to S/C Switch.
No
9 Disconnect the S/C Switch harness connector.
Turn the ignition on.
With the DRBIII in Sensors, read and note the S/C SWITCH voltage.
Turn the ignition off.
Disconnect the Clockspring harness connector (instrument panel wiring side).
Turn the ignition on.
With the DRBIII in Sensors, read the S/C Switch volts.
Did the S/C Switch volts change to 5.0 volts?
Yes → Replace the Clockspring.
→ Go To 10
No
10 Turn the ignition off.
Disconnect the Speed Control Switch harness connector.
Disconnect the PCM harness connectors.
Measure the resistance between the S/C Switch Signal Circuit and the S/C Switch
Ground circuit at the Speed Control Switch connector.
Is the resistance below 5.0 ohms?
Yes → Repair the short between the S/C Switch Signal circuit and the
→ Go To 11
No
ACTION
spring.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
S/C Switch Ground.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
220
APPLICABILITY
SPEED CONTROL
SPEED CONTROL
SPEED CONTROL
SPEED CONTROL
SPEED CONTROL