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YOUR RESEARCHStarting Issue
Leading reported evidence
Test relay
Performed · outcome unconfirmed
No successful repair reported for this finding.
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1
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Performed · outcome unconfirmed · Original poster
For kicks, I tested that relay #7 is in fact receiving 12v to pin#30 and bench tested the relay.
Leading evidence: 'Test relay' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check fuses c1-c4 and e1 first' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
Check voltage, while the key is turned, using a multimeter.
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Suggestion · Original poster
I read a similar thread about a member who fixed his problem by disconnecting the battery for 10 min.
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19 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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This is a 2006 996 36k miles with the following symptoms: turn key in ignition, starter does not engage, no solenoid click, nothing. Oil measurement starts (as if brake was not depressed, but it is). Then all hell breaks loose. the key in ignition dinging gets VERY loud, PSM failure displayed, ABS failure displayed, electric cooling fan up front spins like it's going to take off, "move selector to P or N" indication (it's already in P). Sometimes some other crazy messages. Only code thrown is P0503 (Vehicle speed sensor "A" circuit intermittent/erratic/high).
- Battery is strong, I charged it to be sure, then removed it and had it tested to be sure. All good.
- I jump started it as well just to be triple sure. Same results
I read a similar thread about a member who fixed his problem by disconnecting the battery for 10 min. Tried that, no luck.
Any thoughts would be appreciated. Seems like a bad relay, not sure where to start.
Didn't bail
, I took it to the 997 forum. Problem is not resolved unfortunately. Here's where I am, and I believe I'm now obligated to contribute the eventual resolution back to both forums:
Fuses C1-4, E1 all good. Voltage in old battery was 12.5 but I bought a brand new one just to be 100% positive it was not the battery. It is not ... same multi-system freak out when key is turned. Next, I tore the engine down to the point that I could get to the starter. Voltage reading at starter = voltage reading at battery terminals. Seems to rule out the bad battery cable issue I've read about. When key is turned, the starter solenoid does not receive power, starter gets no opportunity to fire. Sure seems like a relay or switch at this point. Any thoughts on what to inspect next? Another clue perhaps ... multi-system freak out also happens when key is turned, brake pedal is not depressed. This is a tiptronic POS transmission, no clutch involved. I know I know .. it's the wife's car.
Is there just an electrical part? I've found only this in my searches. Also seems to be an expensive part if this is not the problem. Any way to test this outside of trying a new one?
I also swapped relay's 7 and 8 as they are the same part. No luck.
I don't know how to bench test one of those ignition switches. Sunset Porsche has them for $193. That P/N has been superseded by a new part number, so likely that might be your culprit.
https://www.sunsetporscheparts.com/o...ch-99761815907
Another interesting read on the 997 ignition switch. Cannot find anybody who has found a way to test it. Basically it is a universal receiver RFID detector that detects the pill in the key and tells the car DME and Immobilizer go/no-go, i.e., correct key or incorrect key in the ignition.
https://rennlist.com/forums/997-foru...the-key-2.html
yep, that�s my plan. Thanks to all for the consult. Will let you know what happens once I get the new ignition switch in hand. Also, someone commented that only the electrical part was needed. I believe that in older models there were 2 parts, and in my 2006 model year the ignition switch has been consolidated into a single part. Pic is above.
For kicks, I tested that relay #7 is in fact receiving 12v to pin#30 and bench tested the relay. Very simple, apply current across 85 and 86 with a 9v battery, test for continuity across 30 - 87. 87 goes direct to the solenoid and is responsible for activating the starter.
A quick update ... seems our good friends at Porsche decided that the Start Lock relay needed to be moved from (996) Relay Support 2, position 7 -> (997) Relay Support 1, position 15. Relay Support 1 btw is no picnic to access.
https://workshop-manuals.com/porsche...ions/page_118/
Since I can't get a new ignition switch today, I decided to hard wire the relay to rule out any other possible power delivery issues to the starter solenoid. I tried RS2#7 of course, and the engine fan kicked on. Then some research, then hardwired RS1#15 and was able to get the starter to crank!! It was a very happy sound. It would not turn over tho so something else in the system is not being energized, which (hopefully) takes me back to a new ignition switch.
Wish me luck.
This is a source reference. Confirm exact model applicability in the original material.
