407 Airbag Problem

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rookie65
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Joined: 10 Oct 2019, 03:41
Location: New Zealand
My Cars: 2004 407 ST

407 Airbag Problem

Post by rookie65 »

407 2.2 Petrol Manual Sedan, Right hand drive
I have an Airbag fault.
Diagbox gives code E601, Level 1 drivers air bag ignition module fault
Cause Local
Characterisation of the fault Resistance to high

I have removed the Airbag, it has 2 ignitors, both read only 0.4 ohms with the shorting strip isolated. This seems odd as the error code is resistance to high.

I have removed the COM2003 unit and I am getting continuity through it from the Airbag plugs to the 2 outer lower plugs.

I have checked the connector under the Drivers Seat
Any ideas?
Thanks
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GiveMeABreak
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Re: 407 Airbag Problem

Post by GiveMeABreak »

E601 points to a fault on the driver airbag line first level - Resistance too high as you say. Measurement of an impedance higher than the maximum resistance threshold on the level one driver’s air bag line.

The suspect area is the Driver’s pyrotechnic trigger line assembly.

In order to get a diagram, you'll have to post your VIN up.
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Marc
rookie65
Posts: 7
Joined: 10 Oct 2019, 03:41
Location: New Zealand
My Cars: 2004 407 ST

Re: 407 Airbag Problem

Post by rookie65 »

Thanks, the VIN is VF3**************[VIN obfuscated, can be read by forum staff]
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GiveMeABreak
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Posts: 36990
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5644

Re: 407 Airbag Problem

Post by GiveMeABreak »

Ok, so here's a diagram - may or may not be much help - there is not further detail unfortunately for the earlier models.

6565 is the drivers's airbag.
You might find the code guide useful on the Wiki - the codes are in ascending order and in sections.

Wiki Electrical Component Codes

Image
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Marc
rookie65
Posts: 7
Joined: 10 Oct 2019, 03:41
Location: New Zealand
My Cars: 2004 407 ST

Re: 407 Airbag Problem

Post by rookie65 »

Thanks for that.
I have placed 2 x 3.3 ohm resistors in the 2 outer plugs of the Com2003 unit. The Airbag warning then goes away so it is either the Com2003 unit or the Airbag.
I have ordered some replacements.
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