Chrysler 300M 2002 Service Manual page 2671

DRIVEABILITY - NGC
Symptom:
P0594-SPEED CONTROL SERVO POWER CIRCUIT
When Monitored and Set Condition:
P0594-SPEED CONTROL SERVO POWER CIRCUIT
When Monitored: With the ignition key on. The speed control switched on.
Set Condition: The PCm detects a open or shorted in the Speed Control Power Supply
circuit. One Trip Fault.
INTERMITTENT CONDITION
SPEED CONTROL SOURCE CIRCUIT
S/C BRAKE SWITCH OUTPUT CIRCUIT SHORTEDTO GROUND
S/C SOURCE CIRCUIT SHORTED TO GROUND
BRAKE LAMP SWITCH
S/C BRAKE SWITCH OUTPUT CIRCUIT OPEN
PCM (S/C SOURCE CIRCUIT)
TEST
1 Turn the ignition off.
Disconnect the Speed Control Servo harness connector.
Ignition on, engine not running.
NOTE: It is necessary to PRESS and HOLD the Speed Control Switch in the
ON position while checking for voltage.
Using a 12-volt test light connected to ground, probe the Speed Control Brake Switch
Output terminal in the Servo Harness connector.
Does the test light illuminate brightly?
Yes → Go To 2
No
POSSIBLE CAUSES
ACTION
→ Go To 3
242
APPLICABILITY
All