Chrysler 300M 2002 Service Manual page 2693

DRIVEABILITY - NGC
P0688-ASD RELAY SENSE CIRCUIT LOW —
TEST
3 Turn the ignition off.
Remove the ASD Relay from the PDC.
Disconnect the PCM harness connector.
CAUTION: DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING
THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the ASD Output circuit from the PDC to the appropriate
terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 4
→ Repair the open in the ASD Relay Output circuit.
No
4 NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
If there are no possible causes remaining, view repair.
Repair
5 Turn the ignition off.
Install a substitute relay in place of the ASD Relay.
Ignition on, engine not running.
With the DRBIII , erase DTCs.
Attempt to start the engine.
With the DRBIII , read DTCs.
Does the DTC reset?
Yes → Go To 6
→ Replace the ASD Relay.
No
6 Turn the ignition off.
Remove the ASD Relay from the PDC.
Measure the voltage of the Fused B+ circuit in the PDC.
Is the voltage above 11.0 volts?
Yes → Go To 7
→ Repair the Fused B+ circuit. Inspect the related fuse and repair as
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Continued
264
APPLICABILITY
All
All
All
All