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C5 help??


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Went to start the car, battery dead :bang 3 year old Optima, charged it...started fine.

Question; now have a check engine light on, service engine soon DIC message and the CD player won't operate. Other than that, runs fine.

Compile answers here. :lol

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Here is how to check for codes. I'm sure most of them will be because of lost of communication because of the dead battery. I would erase the codes and monitor what comes back.

The "diagnostic display" mode is entered with the following Procedure:

1) Turn on the ignition but don't start the engine.

2) Press the "reset" button to turn off any warning messages

3) Press and hold "options" and

4) While holding "options", press "fuel" four times within a 10-Second period.

Initially, the on-board diagnostics go into the "automatic" mode, which shows each module's DTCs in a

pre-set sequence:

10 PCM Power-train Control Module

28 TCS Traction Control system ABS

?? RTD Real Time damping

40 BCM Body Control Module

60 [PC instrument Pane! Cluster

80 radio

99 FIVAC Heater Vent-Air Conditioning

A0 LDCM Left Door Control module

Al RDCM Right Door Control Module

AC SCM Seat Control module

B0 RFA Remote Function Actuation

For each module, all DTCs will be displayed. If none are present in a module, you will see "no more codes" on the ICP display.

There are two kinds of DTCs, "Current" and "History," designated with a letter suffix, "C" or "H". A current code indicates that the malfunction is present in the system whose module is displaying data. A history code indicates a problem existed in that module sometime in the last 40 or 50 ignition cycles. When not accompanied by a current code of the same number, it is possible it's evidence of a previous problem. Now solved, that was not removed by clearing codes. More likely is that a history code indicates an intermittent malfunction.

"Intermittent" are the most challenging DTCs. An intermittent may have happened only once, may have happened more than once but is inconsistent in its appearance or may be happening on a regular basis but not at the time the IPC is displaying codes. History codes can also be caused by a current malfunction in a system that is not Operating at the time DTCs are displayed. An example is the rear window defogger, which doesn't operate until the BCM detects engine rpm. For history codes set by a system that does not operate with the key on and engine off, a special diagnostic tool called a "scan tester is necessary to properly diagnose the malfunction.

Once the IPC has displayed all 11 modules, the system goes into the manual mode, which allows selection of each module, using combinations of DIC buttons. The manual mode can also be entered at any time during the automatic sequence by pressing any button except "E/M". Once the IPC displays "manual diagnostics", you may select a particular module by pressing the options button to go forward or the "trip" button to go back. Once a system is selected and a DTC is displayed, if more than one are present; press "gages" To move forward or "fuel" to go back. To exit the diagnostic mode at any time, press E/M". If you want to erase or "clear" codes, press "reset". Clearing a code does not repair a problem. You are simply erasing the evidence of it in the module's memory.

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That did the trick Gary :thumbs Brews on me :yesnod

But it did not fix the CD problem...took the CD holder out of the system, replaced it, could hear the CD's loading...it works now also. I can hear a clicking noise behind the radio in the dash somewhere, when I change CD's.

Can someone listen to their CD player and see if the noise is normal? Never heard that before :crazy

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If you want to drive your car in the rain to my side of the world (it will not melt) I can take a look at it for you.

.. im starting to become good at interior work. :)

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