Autopage C3-RS-730 Brake Switch Shutdown

tedmond wrote: if you turn the key to the ignition position, press the brakes to shut off the remote start, and the car also shuts down you should bring it back immediately. It means an ignition wire was possibly damaged.

When I turn the key and press the brake the car stays on but the remote start system does not shut down as it should.

Hello, I've been following this thread but I've no knowledge of US GM cars per se, apart from some Cruze models their wiring is completely different from Euro GM product but here goes. Only one thought. If you can look, make sure ALL of the ignition wires are connected. If not and because of the CEL you might have a legal liability case. If you can't tell is there a good independent auto electrical specialist in your area who can give you a report? I might be inclined to let the original installer make good at their expense of course if you trust them. Did you say the CEL is on all of the time? I'd be worried, future engine and transmission problems for sure unless it was a one off and diagnostic equipment (or disconnect the battery for 20 minutes) erases it. Some years ago there was a 30 page thread here reference a similar problem.

I forgot. Can you test the white wire under R/Start conditions to see if it goes hot on remote start? Also what Davep said about fuses. Test continuity individually with a DMM.

flip01002003 wrote: The Service Engine Soon light was on at all times, whether I started it with the remote or with the key itself. The codes were for transmission and torque converter. I have the actual codes if you want to know them for reference. I just cleared them out about an hour ago and they haven't come back yet. I could try the remote start and see if it comes back on.

So, do they come back with a Remote Start? But not with a key start? They missed the white IGN-2 wire. Which has to be wired as an IGN so hot-in-START. Some DTC's keep the CEL on for a number of IGN cycles wether the fault that set it is present or not. After a number of cycles without the DTC resetting, the CEL will go out, and the DTC becomes a History DTC. It sounds like you're capable of clearing the DTC's yourself. (OBD II DTC's don't clear by disconnecting the battery, Howie. Only with a scanner.)So clear them. If the CEL stays off with key starts, but comes on with RS, it's the RS causing the DTCs and the CEL.

flip01002003 wrote: But the remote start system should shut down and the car should take over when the key is on and the brake is applied... Which doesn't happen.

but you say it DOES shut down with the key off, so the brake cancel is functioning.... If you're thinking that the CEL should go off, and the transmission be "normal" because the "car took over" you're mistaken about how the Powertrain Control Module operates. It seems like the white wire is not powered, and the transmission control solenoids are not powered when Remote Started. This sets Diagnostic Trouble Codes. These DTC's have actions associated with them that the PCM performs for that entire ignition cycle. Ie, because the IGN is not turned off upon key takeover, the CEL and parameters for the DTC's remain active. In your case, one of the "actions" for the DTC's is 3rd gear starts. I'm quite familiar with the 4L60e transmission that your trailblazer has. If the DTC's are for Shift Solenoid faults, and they set with a Remote Start, but not a key start, my bet is on they missed powering the white wire as an IGN.

davep. wrote: So, do they come back with a Remote Start? But not with a key start?

Yes! The codes come back when I remote start the system!!!

davep. wrote: It sounds like you're capable of clearing the DTC's yourself. (OBD II DTC's don't clear by disconnecting the battery, Howie. Only with a scanner.)So clear them. If the CEL stays off with key starts, but comes on with RS, it's the RS causing the DTCs and the CEL.

Yes, I had the codes cleared out and they do NOT come back on with key start, only with the remote start system.

davep. wrote: but you say it DOES shut down with the key off, so the brake cancel is functioning....

Yes, it does. I assumed this break shut off was like a "dual function" sort of thing; where it would shut down the car if the key was not in and shut down the remote start system with the key in. My badddd

davep. wrote: If you're thinking that the CEL should go off, and the transmission be "normal" because the "car took over" you're mistaken about how the Powertrain Control Module operates.

NOOOOOOnononono. I know the CEL will stay on, I wanted to know if the Remote Start system should be shutting off.

davep. wrote: They missed the white IGN-2 wire. Which has to be wired as an IGN so hot-in-START.

SO this should stop the problem of the CEL coming on when remote starting AND should shut down the remote start system when the key is in???

flip01002003 wrote: SO this should stop the problem of the CEL coming on when remote starting AND should shut down the remote start system when the key is in???

It will cure the CEL IF this is the problem. Check the white wire. You could also check IGN-0 fuse 47 in the rear panel while remote started. Is there B+ on both sides? If = No, white wire is not powered. As far as "shut down the remote start" I don't know. Fix the obvious (CEL and 3rd gear starts)before you burn up the 3-4 clutch in your transmission. Please try this sequence again: Start with Remote Start. Turn on key. Step on brake. Turn off key.      Did engine shut off?  If = YES, the RS shut down with the brake pedal or the key wouldn't turn the engine off.  If = NO, the RS did NOT shut down, I have no idea what to check next, but we'll figure it out IF this is the case. Please report back with the findings of this test sequence. This has been going on for a week. I think it's shutting down, you don't. Only one of us is correct, and this sequence will reveal which one of us is. And we can go from there....

flip01002003 wrote: SO this should stop the problem of the CEL coming on when remote starting AND should shut down the remote start system when the key is in???

When the key is IN or the key is ON ?? There is a BIG difference. I've been responding to with key is ON. I don't think there is any RS that reacts to key is IN. The bypasses do, but the RS itself doesn't. Which is it, IN or ON?

davep. wrote: When the key is IN or the key is ON ?? There is a BIG difference. I've been responding to with key is ON. I don't think there is any RS that reacts to key is IN. The bypasses do, but the RS itself doesn't. Which is it, IN or ON?

I do mean when the key is ON, sorry!

So a little update... I just tried the remote start and after I cleared my CEL, and the system actually does shut down. But the CEL comes back on when using the remote start system. Where is the white wire that I need to look at??? Is it the one on the brake harness?

I'm thinking ignition loom.