Hello mates,
I'm having a problem with a Renault Kangoo UCH (combined body computer and immobilizer unit, specific p.n. is UCH-N2, P820081447A). It fails both reading the transponder chip inside the key as well communication with a diagnostic scanner.
The immobilizer antenna mounted around the ignition switch is fine and has been tested on another running car. The diagnostic socket wiring should be fine too because before this failure the scanner was connecting to the UCH just fine.
Tracing both the immo antenna (pin 22) and K-line (pin 40) communication lines from the 40-pin black connector on the UCH leads to a 44-pin TQFP chip which seems to be non functional.
It is seems that this chip is responsible for both communication with the immobilizer antenna (which has an MC33690 transponder chip with K-line interface) as well as K-line communication with a diagnostic scanner. The part is marked with a propritary Sagem E34707A part number.
I want to find additional sources for this chip. My guess is that it's probably used also in other UCH or BSI units made by Sagem for other companies, especially french, and might even be a standard chip (dual UART?) with a Sagem proprietary part number as is quite a common practice, similar to Bosch tactics.
Has anyone seen this chip in other UCH or BSI units made by Sagem? We have quit a few Renault/Peugeot/Citroen UCH/BSI units in our scrap storage but no UCH-N2 and don't want to start opening them all for checking.
Also, if it helps identifying the chip as a standard part, I've found that the RxD (recieve data lines) for the two channels are pins 14 and 26.
And while at it, I'd also like to identify the main processor used on this board, also marked with a Sagem proprietary part number (JCAE AW1034 28118240-3) which is packaged in a 80-pin TQFP package.
Can anyone help?
I'm having a problem with a Renault Kangoo UCH (combined body computer and immobilizer unit, specific p.n. is UCH-N2, P820081447A). It fails both reading the transponder chip inside the key as well communication with a diagnostic scanner.
The immobilizer antenna mounted around the ignition switch is fine and has been tested on another running car. The diagnostic socket wiring should be fine too because before this failure the scanner was connecting to the UCH just fine.
Tracing both the immo antenna (pin 22) and K-line (pin 40) communication lines from the 40-pin black connector on the UCH leads to a 44-pin TQFP chip which seems to be non functional.
It is seems that this chip is responsible for both communication with the immobilizer antenna (which has an MC33690 transponder chip with K-line interface) as well as K-line communication with a diagnostic scanner. The part is marked with a propritary Sagem E34707A part number.
I want to find additional sources for this chip. My guess is that it's probably used also in other UCH or BSI units made by Sagem for other companies, especially french, and might even be a standard chip (dual UART?) with a Sagem proprietary part number as is quite a common practice, similar to Bosch tactics.
Has anyone seen this chip in other UCH or BSI units made by Sagem? We have quit a few Renault/Peugeot/Citroen UCH/BSI units in our scrap storage but no UCH-N2 and don't want to start opening them all for checking.
Also, if it helps identifying the chip as a standard part, I've found that the RxD (recieve data lines) for the two channels are pins 14 and 26.
And while at it, I'd also like to identify the main processor used on this board, also marked with a Sagem proprietary part number (JCAE AW1034 28118240-3) which is packaged in a 80-pin TQFP package.
Can anyone help?
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