Where does key transponder aerial pug in?

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KeithJ
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Where does key transponder aerial pug in?

Unread post by KeithJ »

Hi,

My 2007 GP HDI 2.0 has been off the road for a while. I have done all sorts of works including working around the BSI unit. I'm wondering if I've managed to unplug or disturb the antenna in the steering column that detects the key fob.

I'm aware that the key can lose it's coding but I want to check this first. Nothing responds from the key. The doors don't lock or unlock.

It has a new battery in it.

I do have one wire unplugged with a blue plug but i can't see anywhere for it to go and I assume its not used and is on a generic loom.

I assume the antenna plugs in somewhere in the vicinity of the BSI? If so what colour plug would it be and where would it plug in?

I want to eliminate this as a possibility before messing about with coding etc.

The car turns over but does not start.

Thanks in advance.

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GiveMeABreak
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Re: Where does key transponder aerial pug in?

Unread post by GiveMeABreak »

It sounds like the Engine ECU is locked then.

The transponder coil is integral to the ignition barrel. It is operated by the switch module inside the steering wheel, and from here the data is sent via the CAN network to the BSI which exchanges info with the Engine ECU for authentication and handshaking purposes and back again.

It won't have lost its coding, but may need resynchronising.

Take the key out of the ignition so the transponder aerial does not pick up the chip in the fob.
Wait 5 minutes (in case of constantly trying to start and anti scanning mode is active)
Put the key in the ignition and turn ignition on
within 10 seconds press the lock button on the fob - that's press it within 10 seconds not hold it for 10 seconds.

Remove the key from the ignition
Try and lock / unlock the doors
Start the engine.

If it's not starting now, then further investigation is needed.

When you were working around the BSI or any electrics, I hope you disconnected the battery first and followed the procedure:

BSI Reset / Battery Disconnect / Reconnect Procedure

KeithJ
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Joined: 28 May 2019, 13:27
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Re: Where does key transponder aerial pug in?

Unread post by KeithJ »

Hi,


Thanks for the reply.

I've tried the reset procedure with no luck. That's one reson why I want to check the wiring in the BSI area.

I did follow the correct procedure.

Looks like more detective work is needed.

Thanks

Keith

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GiveMeABreak
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Re: Where does key transponder aerial pug in?

Unread post by GiveMeABreak »

Check your vehicle battery is well charged - poor car batteries cause lots of issues. Not sure when you said it has a new battery in it whether you are referring to the fob or the car..

Keith J
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Re: Where does key transponder aerial pug in?

Unread post by Keith J »

Hi Marc,

Both the fob and car battery are new and the car battery is well charged.

The problems started just after I worked in the bsi area.

Diagbox says that the ECU is locked.

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GiveMeABreak
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Re: Where does key transponder aerial pug in?

Unread post by GiveMeABreak »

So what did you do exactly in the BSI area? Did you pull and replace any fuses, connectors?

Assume you have Diagbox if the engine is locked, but are there any fault codes after the running a Global Test?

KeithJ
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Re: Where does key transponder aerial pug in?

Unread post by KeithJ »

I pulled connectors and removed it as I was trying to trace faults. The plugs are in their right place as I took a photo before reassembly. I've removed it again today to see if I can see any spare sockets but I feel that the plug that is there is redundant and just part of a standard loom.

I replaced it today and I waited at least fifteen minutes before reconnecting the battery. Now no ignition light so I think (hope) I've blown a fuse. This is a car that every single job I do something else goes wrong. I'm really at the end of my tether TBH.

I'd like to thank you for he help that you're giving me.

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GiveMeABreak
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Re: Where does key transponder aerial pug in?

Unread post by GiveMeABreak »

Here is a diagram of your BSI and the fuses. I can't help with the relays as these are integral, but it may also be worth checking the supply to the BSI - Engine Fusebox and also the supplies control unit.

This first is the diagram for the connectors on the BSI and the table below the Key, followed by the BSI Fuses in the second diagram.
Connectors.png
ReferenceConnectorNumber of channelscolourDesignation
2EP40BlackMain harness electronics
3EA6BlackAccessory electronics
4PP16GreenMain harness power
5PB10BlackDashboard harness power
6PB110WhiteDashboard harness power
7AP2GreyMain harness power supply
8PH216GreyPower to the passenger compartment harness
9PH116BlackPassenger compartment harness power
10EH240BluePassenger compartment harness electronics
11EH140WhitePassenger compartment harness electronics

Image

F115ABattery +Rear Screen Wiper Motor
F230AEarthLocking - Unlocking
F35A+APCAirbags And Pretensioners Unit Supply
F410A+APCFuel Additive Pump - Photochromic Interior Rear View Mirror - Suspension Control Unit - Driver´S Aircon Control Panel - Multimedia Assembly
F530ABattery +Driver´S Window Control Unit - Passenger´S Window Control Unit - Electric Blind Motor
F630ABattery +Rear LH Window Control Unit - Rear RH Window Control Unit
F75A+ACCRefrigerated Central Storage Lighting - Glove Box Lamp Switch - Audio System
F820ABattery +Switch Module At The Steering Wheel - Radiotelephone Transceiver - Deflation Detection ECU - Multimedia Assembly - Antitheft Alarm Volumetric Unit - Alarm Siren
F930A+ACCMovable Boot Lighting - Front Cigar Lighter - Multimedia Assembly
F1015ABattery +Suspension Control Unit
F1115ABattery +Ignition Switch - Brake Dual-Function Switch
F1215ABattery +Rain/Sunlight Sensor - Passenger´S Seat Adjustment Relay - Parking Assistance ECU - Lateral Trajectory Monitoring ECU - Radio Amplifier
F135ABattery +Fusebox Relay Unit PSF1 Supply - Seat Memorisation Control Unit
F1415ABattery +Control Panel - Air Conditioning ECU
F1530ABattery +Driver´S Door Lock Assembly - Passenger´S Door Lock Assembly - Rear Left-Hand Door Lock Assembly - Rear Right-Hand Door Lock Assembly
F16ShuntShuntPark Mode / Customer Mode
F1740ABattery +Heated Rear Screen

Keith J
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Joined: 23 Apr 2006, 19:29

Re: Where does key transponder aerial pug in?

Unread post by Keith J »

Thank you very much. I'll look into that.