No start, no spark and code P0505

Tiny
OTHELLOST
  • MEMBER
  • 2001 SUZUKI GRAND VITARA
  • 2.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 90,000 MILES
When ignition is turned on, almost all relays start clicking, power light in dash comes and goes, car swings bot does not start. If you try to scan the car, as soon as it begins the engine diagnostics, all relays start clicking and power to the car shuts off and on repeatedly.
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Sunday, October 13th, 2019 AT 8:58 AM

7 Replies

Tiny
SCGRANTURISMO
  • EXPERT
Hello,

This sounds to me like your vehicle's Power-train Control Module [PCM] or "computer" has an internal short in it. In the diagrams down below I have included your vehicle's electrical schematic and wiring diagrams for ignition and engine performance for you in the diagrams down below. Please go through these and get back to us with what you find out. We have instructions for the removal and installation of your vehicle's PCM if you would like them. Let us know.

Thanks,
Alex
2CarPros
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Sunday, October 13th, 2019 AT 9:25 AM
Tiny
OTHELLOST
  • MEMBER
  • 2001 SUZUKI GRAND VITARA
  • 2.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 90,000 MILES
Once ignition is turned on, all relays start clicking and power light on dash goes on and off repeatedly. Car cranks but does not start. There is no spark. If you scan the car, once the engine diagnostics begin, all the relays start clicking again and the power light goes out and back on repeatedly so the tool loses connection to the car. I managed a complete scan and all I got was a P0505 which should not stop the car from starting.
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Sunday, October 13th, 2019 AT 5:09 PM (Merged)
Tiny
SCGRANTURISMO
  • EXPERT
Hello again,

I sent along some guides for you on my last reply, but here I have the vehicle manufacturers troubleshooting flowchart for your vehicle for Direct Trouble Code[DTC] P0505. Please go through this guide and get back to us with you are able to find out.

Thanks,
Alex
2CarPros
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Sunday, October 13th, 2019 AT 5:09 PM (Merged)
Tiny
AL514
  • EXPERT
Just to add, I would go through and check all the ECM powers and grounds right at the back of the computer by back probing the pins (carefully) with a multi-meter. And do this with the ignition switch in the run position so that the circuits are loaded. Problems can be missed if the circuits are not turned on.
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Sunday, October 13th, 2019 AT 5:09 PM (Merged)
Tiny
OTHELLOST
  • MEMBER
Thank you very much for the assistance. It appeared to have been the PCM. It had water damage. Just have to locate another. Much appreciated.
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Tuesday, October 15th, 2019 AT 3:59 AM
Tiny
SCGRANTURISMO
  • EXPERT
Hello again,

There is a company out of Jacksonville Florida called Module Expert that you can find online that does quality work. I have used them in my own vehicle and I would recommend them.

Thanks,
Alex
2CarPros
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Tuesday, October 15th, 2019 AT 3:19 PM
Tiny
OTHELLOST
  • MEMBER
I got a replacement ECU today and the vehicle started right up.
Thank you so very much for all your help.
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Tuesday, October 15th, 2019 AT 4:11 PM

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