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1st July 2020, 11:53 | #61 |
Doesn't do things by halves
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Yes. You could, of course, just activate cruise and press 'set'! Fingers crossed. Simon PS I'll be incommunicado for a hour or so soon. Don't think I've lost interest!
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1st July 2020, 12:07 | #62 |
Can't help myself
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There's a +6.26v signal from the ECM to C0895-5 whether or not cruise is switched on. Pressing set makes no difference (it wouldn't, the car was stationary). I didn't drive and test as it involves some shenanigans; I thought I'd have some lunch for a change and await your valued input.
What +6.26v means, I have no clue. Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 137,000 miles Last edited by goltho; 1st July 2020 at 12:10.. |
1st July 2020, 12:13 | #63 |
Doesn't do things by halves
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Your meter can't read the square wave properly so it gives you an average voltage reading. The actual values will tell us very little. What is important is that the digital signal is now reaching C0895-5.
After lunch please go for a test drive and see if cruise still doesn't work. I'll check-in with you later this afternoon. Simon
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1st July 2020, 13:12 | #64 | |
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Quote:
Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 137,000 miles Last edited by goltho; 3rd July 2020 at 00:47.. |
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1st July 2020, 13:49 | #65 |
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Drat and double drat!
I'll have to look at this again either late tonight or tomorrow morning. Simon
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1st July 2020, 14:26 | #66 | |
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Quote:
Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 137,000 miles |
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1st July 2020, 18:45 | #67 |
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I forgot to ask, did the IPK cruise logo still fail to illuminate?
Simon
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1st July 2020, 18:47 | #68 | |
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Quote:
Dougie.
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1st July 2020, 21:19 | #69 |
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Hmmm, Wonder if your ZCS codes are configured for Cruise? If you do all original wiring and connectors the ECU says "no" It does not know where to send the signal.
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1st July 2020, 21:33 | #70 | |
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Quote:
I've found nothing online referring to cruise control being affected deliberately or otherwise by automatic transmission gear positions. From distant memory though, isn't it the case that if you slip an auto into neutral whilst cruise is engaged, it disengages it? The fact that moving into gear from neutral drops the voltage seems illogical to me but I have no idea how the ECM is designed to talk to the cruise relay, or even if the voltage is supposed to change relative to the transmission state. I think if we've reached a natural pause in diagnosing, I should revisit and recheck everything I've done. I suppose it's not outside the bounds of possibility that one of the cruise modules is faulty either. Dougie.
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R75 C2 RJBLH Connoisseur CDTi Auto Saloon Built 08/02/2005 @14:57 hrs: Registered 26/08/2005 122nd of 141 built that day British Racing Green Pearlescent (HFF) Sandstone leather with black piping (SPJ) 137,000 miles Last edited by goltho; 1st July 2020 at 21:36.. |
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