Chrysler 300M 2002 Service Manual page 2684

Symptom:
P0645-A/C CLUTCH RELAY CIRCUIT
When Monitored and Set Condition:
P0645-A/C CLUTCH RELAY CIRCUIT
When Monitored: With the ignition on. Battery voltage greater than 10 volts. A/C Switch
on.
Set Condition: An open or shorted condition is detected in the A/C clutch relay control
circuit. One Trip Fault.
INTERMITTENT CONDITION
FUSED IGNITION SWITCH OUTPUT CIRCUIT
A/C CLUTCH RELAY RESISTANCE
A/C CLUTCH RELAY CONTROL CIRCUIT OPEN
A/C CLUTCH RELAY CONTROL CIRCUIT SHORT TO GROUND
PCM
TEST
1 Ignition on, engine not running.
With the DRBIII , actuate the A/C Clutch Relay.
Is the A/C Clutch Relay operating?
Yes → Go To 2
→ Go To 3
No
POSSIBLE CAUSES
ACTION
255
DRIVEABILITY - NGC
APPLICABILITY
All