Chrysler PT Cruiser 2001 Service Manual Supplement page 2623

Symptom:
P1388-AUTO SHUTDOWN RELAY CONTROL CIRCUIT
When Monitored and Set Condition:
P1388-AUTO SHUTDOWN RELAY CONTROL CIRCUIT
When Monitored: With ignition key on and battery voltage above 10 volts.
Set Condition: An open or shorted condition is detected in the ASD relay control circuit.
WIRING HARNESS INTERMITTENT
FUSED B+ CIRCUIT OPEN
ASD RELAY CONTROL CIRCUIT OPEN
ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND
ASD RELAY
PCM
TEST
1 With the DRBIII , actuate the Auto Shutdown Relay.
Is the Auto Shutdown Relay Clicking?
→ Go To 2
No
Yes → Go To 7
2 Turn the ignition off.
Remove the ASD relay from the PDC.
Disconnect the PCM harness connector(s).
Measure the resistance of the ASD relay control circuit from the ASD relay cavity in
PDC to the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 3
→ Repair the open ASD relay control circuit.
No
3 Turn the ignition off.
Remove the ASD relay from the PDC.
Measure both Fused B+ circuits at the ASD Relay cavity in PDC for voltage.
Is the voltage above 10.0 volts for both B(+) Circuits?
Yes → Go To 4
→ Repair the open fused B+ circuit. Note: Check fuse in the PDC.
No
POSSIBLE CAUSES
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
DRIVEABILITY - GAS
163
APPLICABILITY
All
All
All