volvoguy23 Posted February 10, 2016 Report Share Posted February 10, 2016 Car is a 2004 s60 that was purchased non-running running due to a no crank issue. Car gas been to the dealership with no success, car has been to local Indy shop with no success, car has been to me with no success but I think I have narrowed it down. Everything that's been done: New ignition switch, Antenna ring, new SIM or tested sim. I found no power to fuses 5-9 which are for ECM, injectors, maf under the hood. The starter relay terminals only have power going to one of the pins while others have 2. When turning the key to start it, only the two relays on the sim click, no power is provided to the starter relay. And no power is coming from the exciter wire. I find it funny the fuse for the "ECM" has no power. I haven't looked at wiring diagrams yet or have searched but no one can figure this car out. I've thought about the pnp switch but it seems fine. No funny lights on the gauge cluster either. Does anyone have any idea of what could be causing this or how to further diagnose it? Link to comment Share on other sites More sharing options...
volvoguy23 Posted February 10, 2016 Author Report Share Posted February 10, 2016 I can elaborate some more, I was in hurry with the first post. What ever triggers the relays under the hood is what I need to find. Not sure where to start, haven't looked up wiring diagrahms yet. To the owners knowledge the PO had the dealership replace the ignition switch but not sure how accurate this is. I can apply 12v to the starter exciter wire and it will crank over all day. But it seems there is no power to the important stuff under the hood. Something isn't allowing the relays to switch on under the hood. Any and all help would be great! Link to comment Share on other sites More sharing options...
boxpin Posted February 10, 2016 Report Share Posted February 10, 2016 I wouldnt even move forward without those wiring diagrams. They will be key. Link to comment Share on other sites More sharing options...
Ihatespeedbumps Posted February 10, 2016 Report Share Posted February 10, 2016 Do you have the codes from VIDA? Also, I second the wiring diagrams before proceeding. Link to comment Share on other sites More sharing options...
volvoguy23 Posted February 10, 2016 Author Report Share Posted February 10, 2016 I don't have the codes but I can scan it, I believe there weren't any I'll have to ask again. I've been studying the diagrahm for a couple hours trying to make sense of it all, Definitely helping. Going to keep reading and do more testing. Link to comment Share on other sites More sharing options...
Volvo5.0 Posted February 11, 2016 Report Share Posted February 11, 2016 13 hours ago, volvoguy23 said: When turning the key to start it, only the two relays on the sim click, no power is provided to the starter relay. So you removed the starter relay and checked for power at terminal #1 in the socket while turning the key to the start position? Link to comment Share on other sites More sharing options...
volvoguy23 Posted February 11, 2016 Author Report Share Posted February 11, 2016 Yes sir, there was nothing. Link to comment Share on other sites More sharing options...
Volvo5.0 Posted February 11, 2016 Report Share Posted February 11, 2016 Terminal #1 (86 on the relay) is power from the ignition switch in the start position. It does go through a couple of connectors though. Maybe go back to the ign. switch and see if you have power at the 50 terminal in the crank position. Should be a Y-W wire. 23 hours ago, volvoguy23 said: I found no power to fuses 5-9 which are for ECM, injectors, maf under the hood. ECM relay is right above the starter relay. Is that relay energized? I've seen fuse #23 (5amp) blown which will cause that relay to not operate. That relay powers up the fuses 5-9. If you pull that relay out, you should have power on terminals 1(86) and 3(30). The ground that triggers that relay to turn on the fuses, comes from the ECM (maybe after an immobilizer check?) to terminal 2(85) of that relay. Link to comment Share on other sites More sharing options...
Volvo5.0 Posted February 11, 2016 Report Share Posted February 11, 2016 You said the car has a new or tested SIM. You're talking about the CEM, right? Maybe it's a used one or a new one that was never programmed? I've had cars brought to me from another shop that had no idea that a part they replaced needed to have software installed. If you have Vida, there will definitely be configuration faults for the CEM if there is no software or wrong software. Link to comment Share on other sites More sharing options...
volvoguy23 Posted February 11, 2016 Author Report Share Posted February 11, 2016 Yes I meant CEM, I believed it's been tested and everything was fine, I will have to verify this. I do have access to VIDA and will be checking for faults myself. And yes fuses 4-8 under hood have no power. I checked every fuse the car had and to my knowledge #23 was fine. The relay terminals 86 and 30 did have power for the ECM relay (FMA2) but nothing is happening with the relays when turning the key. FMA4 the starter relay, only seems to have power from pin 30. I will have to verify this though as I'm not close to the car at the moment. Thanks for posting btw.. Link to comment Share on other sites More sharing options...
Volvo5.0 Posted February 11, 2016 Report Share Posted February 11, 2016 If you have power on terminal 86 of the ECM relay, then fuse #23 is fine. Seems like no ground signal is being sent to trigger the ECM relay from terminal B:38 of the ECM itself. Maybe an immobilizer issue?? The CEM and the ECM both check the key and if they both agree that the key is legit, then the car will start. There is a trick that has worked for me a couple of times. Turn the key to the on position (position II) and wait about 30 seconds or more and then, without turning the key off, turn to the start position and see if it cranks. I've never confirmed this with a Volvo rep but there was a rumor that if you leave the key in the on position for an extended period of time that, even if only one of the modules (ECM or CEM) approves the key, then the car will crank. May not work but it is worth a try. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.