coastline taxis Posted February 3, 2009 Posted February 3, 2009 This car has never been a pick of bother in the 3 years weve looked after it untill today when it was brought in on the back of a AA wagon. It starts up and runs as if there is nothing wrong with it driving perfect loads of power and ticks over nicley. The problem is that every light on the dash is blinking on and of at a regular pulse. display goes form economy mode to anti pollution fault to hydraulic disply then says its raising and lowering the suspension then miles per gallon then just keeps going round in a loop. Windows wont work no stereo or blowers so it is in economy mode. So plugged it in and got 32 fault codes ranging from abs fault to low oil pressure . Here are a fewp1101p1108p1110p1112p11691305p1320p1402p1519p1604p1613u1000u1003u1600u1706 Have checked and the u codes mean that the can bus system isnt talking to each other and theres a imobiliser fault code in there. but the car drives perfect . Cleared the codes and the car fired up and ran with no light or faults for 10 mins then the reverse warning bong cane on and back came the lights on the dash and fault codes back. Have checked ecu plugs/earth leads/ign barrel and wiring also put new battery on. In my mind i cand help thinking that it has something to do with the dashboard as the lights are pulsing at regular intervals or its a ecu failure or am i going in the wrong direction Quote
mlkey Posted February 3, 2009 Posted February 3, 2009 This car has never been a pick of bother in the 3 years weve looked after it untill today when it was brought in on the back of a AA wagon. It starts up and runs as if there is nothing wrong with it driving perfect loads of power and ticks over nicley. The problem is that every light on the dash is blinking on and of at a regular pulse. display goes form economy mode to anti pollution fault to hydraulic disply then says its raising and lowering the suspension then miles per gallon then just keeps going round in a loop. Windows wont work no stereo or blowers so it is in economy mode. So plugged it in and got 32 fault codes ranging from abs fault to low oil pressure . Here are a fewp1101p1108p1110p1112p11691305p1320p1402p1519p1604p1613u1000u1003u1600u1706 Have checked and the u codes mean that the can bus system isnt talking to each other and theres a imobiliser fault code in there. but the car drives perfect . Cleared the codes and the car fired up and ran with no light or faults for 10 mins then the reverse warning bong cane on and back came the lights on the dash and fault codes back. Have checked ecu plugs/earth leads/ign barrel and wiring also put new battery on. In my mind i cand help thinking that it has something to do with the dashboard as the lights are pulsing at regular intervals or its a ecu failure or am i going in the wrong direction Maybe water ingress? Quote
coastline taxis Posted February 3, 2009 Author Posted February 3, 2009 Maybe water ingress?Will check for that tomorrow any other suggestions gratefully acepted Quote
techbod Posted February 3, 2009 Posted February 3, 2009 CAN bus fail and could be water/ice in the system which could be the reason it broke down in the first place,many codes general leads to one main component and the U codes are a give away meaning chassis computer and the immobiliser is part of that ( I noticed one of the codes says the key code was not accepted ) and excess water could cause that so a good dry out would be a good start also you will need to disconnect the negative on the battery for a while and reset the computer as in a few drive cycles for it to relearn Quote
coastline taxis Posted February 4, 2009 Author Posted February 4, 2009 CAN bus fail and could be water/ice in the system which could be the reason it broke down in the first place,many codes general leads to one main component and the U codes are a give away meaning chassis computer and the immobiliser is part of that ( I noticed one of the codes says the key code was not accepted ) and excess water could cause that so a good dry out would be a good start also you will need to disconnect the negative on the battery for a while and reset the computer as in a few drive cycles for it to relearnThe car never broke down it was recovered because of the lights flashing and werent sure about it. the only time it wouldnt start was when i cleared the fault codes. the fault is connected to the pulsing on the dash so got to find something on the c5 that pulses and start from there Quote
techbod Posted February 4, 2009 Posted February 4, 2009 hmmm many things pulse but the one I would look at is hazard warning lights or bad earth causing faulty connection like its trying to engage and switching, can you hear any relay clicking? all those fault codes cant be the issue as there are too many and not possible for all of them to be bad so you need to find whats switching off and on Quote
Randombloke Posted February 4, 2009 Posted February 4, 2009 techbod is your man. He knows the details, but I'll go for some long shots. What is the battery voltage? Is it strange? Does the car charge when the engine is running? Have you been over all the main ECU type connectors in both the the engine bay and the glove box, possibly with a hair dryer set low, looking for water ingress? (I think the answer to this is yes) Has every single multi pin connector been checked for tightness? Are all the cables to the instrument cluster tight? Have all the fuses been checked to see that there is nothing cracked? If the car has Xenon headlights, is it worth disconnecting those? Same with the headlight levelling circuits? Have you got a COM 2000 unit you can swap out? That's lights, and trip computer info control. Also, is there any loom damage anywhere? From techbod posting about CAN Bus issues, this would be a good bet. Is the madness connected to the switching on and off of the hydraulic pump? Last, but very long shot, please set the dashboard dimmer to full on or off or bypass it...... Quote
paul.h Posted February 4, 2009 Posted February 4, 2009 Does the driver's footwell get wet. Rain can get in via the driver's wiper grommet, dripping in the cabin air intake and runs down the cabin wall and in to the footwell. I seem to remember a post that on its way it affects electrical equipment. A good search may find the notes. Quote
techbod Posted February 4, 2009 Posted February 4, 2009 the comms 2000 is often a conflict and that's new cars for you ( computers ) im working on a way round that but not easy and a break out box is the solution ( technical ) so if you don't know then leave it alone its a brain teaser Quote
coastline taxis Posted February 4, 2009 Author Posted February 4, 2009 the comms 2000 is often a conflict and that's new cars for you ( computers ) im working on a way round that but not easy and a break out box is the solution ( technical ) so if you don't know then leave it alone its a brain teaserNo further forward with this one. Definatley no water getting into anything,charging system is fine and tried new battery,all wiring is intact and secure also all terminals are ok and no corrosion. key fob works fine locking/unlocking car. it just seems like the hole electric system has a mind of its own,Have just oredered ilexia diagnostic system of ebay so lets hope that sorts it out Quote
mlkey Posted February 4, 2009 Posted February 4, 2009 Have just oredered ilexia diagnostic system of ebay so lets hope that sorts it out What cable do I need for this, I found the software on ebay, no mention of cable? Quote
coastline taxis Posted February 4, 2009 Author Posted February 4, 2009 What cable do I need for this, I found the software on ebay, no mention of cable?the plan is to use the lead and interface of the elm we got. weather it works or not is a different matter Quote
coastline taxis Posted February 4, 2009 Author Posted February 4, 2009 What cable do I need for this, I found the software on ebay, no mention of cable?the plan is to use the lead and interface of the elm we got. weather it works or not is a different matter Quote
techbod Posted February 5, 2009 Posted February 5, 2009 now this would be of great interest and hope it works Quote
coastline taxis Posted February 5, 2009 Author Posted February 5, 2009 now this would be of great interest and hope it workswell told the owner today that we really havnt got a clue and it needs to go to dealers. Anyway he was fine about it and when he came to collect it he was chatting away and casualy saidl he had just had a new taxi meter fitted on the morning of the problem occouring. Well went straight to the meter switched it off and pulled the fuse and hey presto car back to normal so checked wiring for taxi meter and there was the problem. Taxi meter has 4 wires + and - then 1 wire that connect to the speedo wire and picks the pulses up of the speed sensor so it knows what distance and speed its doing then the last wire connects to the top sign relay to switch it on and off. Phoned the meter firm up and told them what was happening anyway the car was taking back to them and it turns out that the new lad had fitted it so that the pulses from the speedo wire was getting fed back into the network wires and sending it haywire. anyway car now fine, but now cant help wondering if half the problems that people seem to have with the c5s could have something to do with incorrectley fitted aftermarket products eg stereos/satnavs/handsfree. also even after having been corrected could this do any lasting damage to the ecu or will it get over itWell im having a half day now as si just cant be arsed and im cold Quote
mlkey Posted February 5, 2009 Posted February 5, 2009 well told the owner today that we really havnt got a clue and it needs to go to dealers. Anyway he was fine about it and when he came to collect it he was chatting away and casualy saidl he had just had a new taxi meter fitted on the morning of the problem occouring. Well went straight to the meter switched it off and pulled the fuse and hey presto car back to normal so checked wiring for taxi meter and there was the problem. Taxi meter has 4 wires + and - then 1 wire that connect to the speedo wire and picks the pulses up of the speed sensor so it knows what distance and speed its doing then the last wire connects to the top sign relay to switch it on and off. Phoned the meter firm up and told them what was happening anyway the car was taking back to them and it turns out that the new lad had fitted it so that the pulses from the speedo wire was getting fed back into the network wires and sending it haywire. anyway car now fine, but now cant help wondering if half the problems that people seem to have with the c5s could have something to do with incorrectley fitted aftermarket products eg stereos/satnavs/handsfree. also even after having been corrected could this do any lasting damage to the ecu or will it get over itWell im having a half day now as si just cant be arsed and im coldResult! It is cold, and white, and I am snowed in in my village... Ah well.. Quote
DaveHerns Posted February 8, 2009 Posted February 8, 2009 well told the owner today that we really havnt got a clue and it needs to go to dealers. Anyway he was fine about it and when he came to collect it he was chatting away and casualy saidl he had just had a new taxi meter fitted on the morning of the problem occouring. Well went straight to the meter switched it off and pulled the fuse and hey presto car back to normal so checked wiring for taxi meter and there was the problem. Taxi meter has 4 wires + and - then 1 wire that connect to the speedo wire and picks the pulses up of the speed sensor so it knows what distance and speed its doing then the last wire connects to the top sign relay to switch it on and off. Phoned the meter firm up and told them what was happening anyway the car was taking back to them and it turns out that the new lad had fitted it so that the pulses from the speedo wire was getting fed back into the network wires and sending it haywire. anyway car now fine, but now cant help wondering if half the problems that people seem to have with the c5s could have something to do with incorrectley fitted aftermarket products eg stereos/satnavs/handsfree. also even after having been corrected could this do any lasting damage to the ecu or will it get over itWell im having a half day now as si just cant be arsed and im coldAlways worth asking the owner what lead up to the problem developing Quote
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