2002 issues. Looking for help.
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From: Cape Coral, Florida
Moderator, Tech Contributor
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From: Cape Coral, Florida
In post #23 you stated what you were seeing and I said it was good !!…as long as you don’t read 12 volts or ground it’s good !!…check that voltage drop on the ignition switch !!..also when you turn the key on do you hear the fuel pump run for 2 seconds and shut off ??
Last edited by C5 Diag; Feb 19, 2022 at 04:32 PM.
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Hello, In serious need of some help. Started with a radio buzz and fog light switch not working. Fog lights flash when locking.
3 months later curtesy and tail lights fail.
1 month later was checking fuses in the foot well. Created more issues.
Now car will not crank. No radio, approach lights, gauges don't sweep, Can't retrieve codes no display.
Turn signals, head lights, brake lights is about all that works now.
Additional note: The light under the hood lights dimly. Goes out if the door is opened,
or if the key is just inserted. Not turned.
Battery was tested bad and replaced. Found no ground corrosion. Cleaned anyway.
Thank you in advance. All help is greatly
appreciated.
3 months later curtesy and tail lights fail.
1 month later was checking fuses in the foot well. Created more issues.
Now car will not crank. No radio, approach lights, gauges don't sweep, Can't retrieve codes no display.
Turn signals, head lights, brake lights is about all that works now.
Additional note: The light under the hood lights dimly. Goes out if the door is opened,
or if the key is just inserted. Not turned.
Battery was tested bad and replaced. Found no ground corrosion. Cleaned anyway.
Thank you in advance. All help is greatly
appreciated.
1-Turn key to 'on' position.
2-Push reset until warnings are gone, and it's blank.
3-Press and hold options button in.
4-Press and release fuel button 4 times in under 10 seconds, all while holding options button in. The DIC will then start listing codes by number and name. It will also show an H, or an HC. 'H' is for History, which means its happened sometime in the vehicles history. 'C' is current, meaning it's a current issue, and 'HC' means history AND it's also current, meaning the problem is still happening. I used my phone to make a video so I could remember what ones were showing in the DIC. You can exit the program by pressing E/M at any time. Scroll thru the modes forward by pressing options, back by pressing trip. Erase codes by pressing reset, which removes the CODE ONLY, NOT THE ISSUE!!! Listen to C5 Diag-He knows his stuff. Now.....If I could just get him to move to the Tampa area!!
Anyway-Best of luck to you!
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Joined: Sep 2013
Posts: 15,308
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From: Cape Coral, Florida
Obviously there are issues, but your foglights are supposed to flash when locking with the fob. FWIW. I'd start by cleaning every ground location. New battery was a good move. You can run an onboard diagnostic on the C5.
1-Turn key to 'on' position.
2-Push reset until warnings are gone, and it's blank.
3-Press and hold options button in.
4-Press and release fuel button 4 times in under 10 seconds, all while holding options button in. The DIC will then start listing codes by number and name. It will also show an H, or an HC. 'H' is for History, which means its happened sometime in the vehicles history. 'C' is current, meaning it's a current issue, and 'HC' means history AND it's also current, meaning the problem is still happening. I used my phone to make a video so I could remember what ones were showing in the DIC. You can exit the program by pressing E/M at any time. Scroll thru the modes forward by pressing options, back by pressing trip. Erase codes by pressing reset, which removes the CODE ONLY, NOT THE ISSUE!!! Listen to C5 Diag-He knows his stuff. Now.....If I could just get him to move to the Tampa area!! Anyway-Best of luck to you!
1-Turn key to 'on' position.
2-Push reset until warnings are gone, and it's blank.
3-Press and hold options button in.
4-Press and release fuel button 4 times in under 10 seconds, all while holding options button in. The DIC will then start listing codes by number and name. It will also show an H, or an HC. 'H' is for History, which means its happened sometime in the vehicles history. 'C' is current, meaning it's a current issue, and 'HC' means history AND it's also current, meaning the problem is still happening. I used my phone to make a video so I could remember what ones were showing in the DIC. You can exit the program by pressing E/M at any time. Scroll thru the modes forward by pressing options, back by pressing trip. Erase codes by pressing reset, which removes the CODE ONLY, NOT THE ISSUE!!! Listen to C5 Diag-He knows his stuff. Now.....If I could just get him to move to the Tampa area!!
Anyway-Best of luck to you!
Race Director
Joined: Oct 2004
Posts: 12,793
Likes: 4,614
. Anyway, damn, I missed his DIC was blank. Oh well......
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From: Cape Coral, Florida
Fuse 13 is the fuel pump fuse so I can’t see how you are dropping ALL of the voltage across the switch when you said you can hear the fuel pump run turning the key on…can you take a pic of your voltmeter set up for this ??…on the other circuits you should see some drop and not 0.
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From: Cape Coral, Florida
Please take a pic of how you are connecting your voltmeter…on that ignition switch circuit you have injectors and coil packs being powered when you start the car so you should not be seeing 12 volts !!…is your battery FULLY charged and connections TIGHT ??…it may be best to take the car to a shop where they can check all the modules especially the PCM and BCM to make sure they are being powered up and also communicating…where are you located ??
Last edited by C5 Diag; Feb 19, 2022 at 08:00 PM.
you kinda lost me. fuse 13 fuel pump reads 12 volts with key turned. the other three you told me to check the same way drop to 0.00.
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From: Cape Coral, Florida
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,308
Likes: 3,924
From: Cape Coral, Florida
If you may need to have someone look at your car my friend Matt who lives in Aurora has a great YouTube channel named “Schrodingers Box”…he’s a DIY diagnostic guy…very sharp and a Molecular Biologist by trade !!
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From: Colorado
I'll get someone to help me with the measurement. Which fuses you want tested are by the batt. and which ones are in the footwell?
I didn't know about reading dc voltage with two positives.
I didn't know about reading dc voltage with two positives.
Last edited by TRPLBLKC5; Feb 19, 2022 at 09:07 PM.
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From: Colorado
unfamiliar terminology, thank you WOW, I've been schooled today.
thanks for sticking with me. I know its tough working with less knowledgeable.
thanks for sticking with me. I know its tough working with less knowledgeable.
Last edited by TRPLBLKC5; Feb 19, 2022 at 09:15 PM.
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From: Cape Coral, Florida
9,14, and 21 are IP fusebox…13 is fuel pump and is underhood as in my pic…reread post #21 !!