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2004 sebring 2.7 code "p0688" help please

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  #1  
Old 04-22-2021, 10:55 PM
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Default 2004 sebring 2.7 code "p0688" help please

Finally got this code doing ON and OF 3 times on the key ignition.
Changed the battery, crankshaft position sensor and spark plugs.
Still crank and no start.

Any help will be appreciated.
 
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Old 04-23-2021, 09:51 AM
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Old 04-23-2021, 07:10 PM
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Thank You!
 
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Old 04-24-2021, 02:55 AM
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RESOLVED, yes finally got fixed. It took me 15 minutes cleaning the ASD relays. I have no idea how all that dirty got inside. all 3 relays needed to be cleaned . I didn't have to spend money buying a new one
I really appreciated from everyone special dcotter0579.
 
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Old 05-08-2021, 09:26 AM
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Hi, Please can you tell me what the ASD relays look like an dhow to locate it?
I would like to clean mine but dont know what it looks like and how to clean it.
Can you add a photo?
Thank you
I have a 2006 Sebring Touring 6 cylinder
 
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Old 05-08-2021, 09:27 AM
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Hi, Please can you tell me what the ASD relays look like an dhow to locate it?
I would like to clean mine but dont know what it looks like and how to clean it.
Can you add a photo?
Thank you
I have a 2006 Sebring Touring 6 cylinder

 
  #7  
Old 05-08-2021, 09:34 AM
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The following text is from the factory service manual: (The PDC is the fusebox under the hood)

AUTO SHUT DOWN RELAY
DESCRIPTION
The relay is located in the Power Distribution Center
(PDC). For the location of the relay within the
PDC, refer to the PDC cover for location. Check electrical
terminals for corrosion and repair as necessary
OPERATION
The ASD sense circuit informs the PCM when the
ASD relay energizes. A 12 volt signal at this input
indicates to the PCM that the ASD has been activated.
This input is used only to sense that the ASD
relay is energized.
When energized, the ASD relay supplies battery
voltage to the fuel injectors, ignition coils and the
heating element in each oxygen sensor.
When energized, the ASD relay provides power to
operate the injectors, ignition coil, generator field, O2
sensor heaters (both upstream and downstream),
(EGR solenoid and PCV heater if equipped) and also
provides a sense circuit to the PCM for diagnostic
purposes. If the PCM does not receive 12 volts from
this input after grounding the ASD relay, it sets a
Diagnostic Trouble Code (DTC). The PCM energizes
the ASD any time there is a Crankshaft Position sensor
signal that exceeds a predetermined value. The
ASD relay can also be energized after the engine has
been turned off to perform an O2 sensor heater test,
if vehicle is equipped with OBD II diagnostics.
As mentioned earlier, the PCM energizes the ASD
relay during an O2 sensor heater test. This test is
performed only after the engine has been shut off.
The PCM still operates internally to perform several
checks, including monitoring the O2 sensor heaters.
 
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Old 05-08-2021, 12:42 PM
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That was a great write up,
Thank you
 
  #9  
Old 05-08-2021, 03:13 PM
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It looks like this:
Good luck
 
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Old 05-08-2021, 03:15 PM
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Check this one too:
 


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