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Diagnostic Procedure

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSIS PROCEDURE - P0688-ASD RELAY SENSE CIRCUIT LOW

TEST ACTION APPLICABILITY
1
NOTE: Diagnose P0685 - Auto Shutdown Relay Control Circuit first if set along with this DTC.
With the DRBIII®, erase the DTC.Attempt to start the engine. If the engine will not start, crank the engine for at least 15 seconds. It may be necessary to repeat several times.Does the DTC reset?Yes --> Go To 2No --> Refer to the INTERMITTENT CONDITION .Perform POWERTRAIN VERIFICATION TEST VER - 5 .		 All
2 Attempt to start the engine.
Does the engine start.
Yes --> Go To 3
No --> Go To 5		 All
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 TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.

Measure the resistance of the (K25) 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
No --> Repair the open in the (K25) ASD Relay Output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 .		 All
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.RepairReplace and program the Powertrain Control Module in accordance with the Service Information.Perform POWERTRAIN VERIFICATION TEST VER - 5 .		 All
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
No --> Replace the ASD Relay.
Perform POWERTRAIN VERIFICATION TEST VER - 5 .		 All
6 Turn the ignition off.
Remove the ASD Relay from the PDC.
Measure the voltage of the (A14) Fused B+ circuit in the PDC.
Is the voltage above 11.0 volts?
Yes --> Go To 7
No --> Repair the (A14) Fused B+ circuit. Inspect the related fuse and repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5 .		 All
7 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 TERMINALS 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 each of the ASD Relay Output circuits at the appropriate terminal of special tool #8815.
Is the resistance below 5.0 ohms?
Yes --> Go To 8
No --> Repair the open in the ASD Relay Output circuit(s).
Perform POWERTRAIN VERIFICATION TEST VER - 5 .		 All
8
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.RepairReplace and program the Powertrain Control Module in accordance with the Service Information.Perform POWERTRAIN VERIFICATION TEST VER - 5 .		 All
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