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Citroen Relay 2.2 4HU 2008 - Non start - Fixed #

Posted by Bill Harper on April 3, 2012, 9:41 am

Year of Manufacture *: 2008
Engine Size and Code *: 2200 hdi 4hu
( Optional ) Scanner Used: dec super scan bosch kts
( Optional) Fault Codes: u1701 u1601

Hi

Vehicle is a non start... these fault codes will not clear..imobilizer light on dashboard, no engine light or glow light..checked all fuses and found, fuse f22 20amp engine bay fuse box not live. if a live is applied to this fuse the vehicle,s imobilizer light goes out and the engine light comes on.. but there is still no communication to the engine control unit and vehicle still doesn't start... the bsi unit has been re-configured and re-programmed but still hasn,t solved problem.. An acurate wiring diagram or any help would be appreciated..

Re: citreon relay

Posted by Jamie Lambert <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1460' width='330' height='300' border=0 style='border:none;'> on April 4, 2012, 9:32 pm, in reply to "citreon relay "
Jamie Lambert

Hi Bill
I had same fault with an 2007 relay, never got to the bottom of it customer took the vehicle away. Mine had a corroded canbus wire in the loom over the bulkhead on the drivers side repaired that but still the same. I think i have some pin data somewhere. The engine ecu communicates with the bsi through the abs ecu. I thought mine might of been the bsi.

Regards Jamie

Re: citreon relay

It looks like the ECM communicates with the BSI on the single wire labeled as K-Line by Citroen but also communicates on the Hi CAN through the ABS control module. See attached information.

K-Line from BSI to ECM

From BSI module 52-pin Blue connector wire number 110 pin 26 is the single CAN wire

Going to ECM 48-pin Brown connector pin J2

CAN BUS from ECM to ABS

ECM 48-pin Brown connector pin A4 wire number 17 going to ABS module pin 26

ECM 48-pin Brown connector pin B4 wire number 16 going to ABS module pin15

CAN BUS from BSI to ABS

From BSI module 52-pin Blue connector wire number 8 pin 48 going to ABS module pin 14

From BSI module 36-pin Blue connector wire number 9 pin 49 going to ABS module pin 25

CAN BUS from BSI to Instrument panel

From BSI module 36-pin Blue connector wire number 90 pin 5 going to 18-pin Black connector pin 5

From BSI module 36-pin Blue connector wire number 75 pin 6 going to 18-pin Black connector pin 6

Re: citreon relay

Posted by Steve Shaw <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1301' width='330' height='300' border=0 style='border:none;'> on April 6, 2012, 10:56 pm, in reply to "Re: citreon relay "
Steve Shaw

i've had one with the wiring loom shorting on a bracket at n/s/f inner wing area nr. the ecu, but i can't honestly remember if it was a relay or a renault master now

hth
Steve

Re: citreon relay

Posted by Bill Harper on April 10, 2012, 11:39 am, in reply to "Re: citreon relay "
Message modified by board administrator April 11, 2012, 2:18 pm

thanks for your replies am in process of testing all wiring to engine control unit as no comms. fuse f22 under bonnet has no live and the engine management light doesnt come on dash.put a live to fuse and light comes on on dash but still no comms.

Re: citreon relay

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on April 10, 2012, 7:10 pm, in reply to "Re: citreon relay "
Mark Carter

Hi Bill,

Good to "see" you on here.

Regards

Mark.

Modern cars, Its all wizardry and witchcraft

Re: citreon relay

Posted by bill harper <iframe src='https://members.boardhost.com/ukautotalk8/info/user=ukat3427' width='330' height='300' border=0 style='border:none;'> on April 12, 2012, 9:09 am, in reply to "Re: citreon relay "

hi mark tell me about it cant get a wiring diagram for it, am working blind.very interesting times...

Re: Citroen Relay 2.2 4HU 2008 - Non start #

Posted by Kevin Apps <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT2589' width='330' height='300' border=0 style='border:none;'> on April 12, 2012, 11:04 am, in reply to "Citroen Relay 2.2 4HU 2008 - Non start #"
Kevin Apps

Bill.

Use the Technical Information Links in garage management section.

Citreon service is pay per view but there is plenty to help you on this and the other citreon.

Kev.

Re: Citroen Relay 2.2 4HU 2008 - Non start #

thanks kevin will try that. appreciate the help....

Fixed #

Posted by Bill Harper on April 13, 2012, 12:09 pm, in reply to "Citroen Relay 2.2 4HU 2008 - Non start #"
Message modified by board administrator April 13, 2012, 1:19 pm

Hi

Happy days are here.. van is now running... traced fault finaly to pin bg2 of central ecu plug a green and blue thin wire. Wire runs from engine bay fuse box black multi plug pin 9, along ns inner wing to engine control unit.. the wire itself is a 12v feed. Wire was heavily corroded and when pulled broke apart..after cutting back to good wire and soldering together comms are now back and van starts.. thanks for all your replies, have helped to point me in the right direction..

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