Chrysler 300M 2002 Service Manual page 2662

Symptom:
P0580-SPEED CONTROL SWITCH #1 LOW
When Monitored and Set Condition:
P0580-SPEED CONTROL SWITCH #1 LOW
When Monitored: With the ignition key on. Battery voltage above 10 volts.
Set Condition: The PCM detects the Speed Control Switch Signal circuit voltage is less
than 0.43. One Trip Fault.
INTERMITTENT CONDITION
SPEED CONTROL ON/OFF SWITCH
SPEED CONTROL RESUME/ACCEL SWITCH
SPEED CONTROL SWITCH SIGNAL CIRCUIT SHORTED TO SENSOR GROUND
SPEED CONTROL SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
PCM
TEST
1 NOTE: Do not press any of the Speed Control Switch buttons.
Ignition on, engine not running.
With the DRBIII , read the Speed Control voltage.
Is the Speed Control voltage below 1.0 volt?
Yes → Go To 2
→ Go To 7
No
2 Ignition on, engine not running.
With the DRBIII , monitor the Speed Control Switch voltage.
Disconnect the Speed Control On/Off Switch harness connector.
Did the voltage change to above 4.7 volts?
Yes → Replace the Speed Control On/Off Switch.
→ Go To 3
No
3 Ignition on, engine not running.
With the DRBIII , monitor the Speed Control Switch voltage.
Disconnect the Speed Control Resume/Accel Switch harness connector.
Did the volt change to above 4.7 volts?
Yes → Replace the Speed Control Resume/Accel Switch.
→ Go To 4
No
POSSIBLE CAUSES
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 4.
Perform POWERTRAIN VERIFICATION TEST VER - 4.
DRIVEABILITY - NGC
233
APPLICABILITY
All
All
All