PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -367
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Fault Finding Chart
87B
87B -367V9 MR-372-J84-87B000$989mif
UCH
Vdiag No.: 44, 48,
4C, 4D, 4F, 50
ALP42The vehicle does not start, the after ignition feed fails in hands-
free mode but works with the card in the card reader
NOTESFirst carry out a function fault finding check.
Test with the other card.
Switching to + accessories feed should work.
If not deal with ALP39 Accessories feed not activated first.
Check that the start-up conditions are met:
Check that the tailgate is detected as closed by the UCH using status ET050 Tailgate/
Boot.
Carry out the tests with the other cards allocated to the vehicle.
The card may be inhibited or the vehicle was not unlocked electrically: unlock by pressing the card button and
check if the hands-free starting fault is still present.
If the hands-free starting fault affects only one card:
Check that the card battery has been inserted the right way round. If the battery is flat or an incorrect model is being
used, replace the battery. If not, replace the faulty card.
If the hands-free starting fault affects every card:
Make sure the UCH is properly configured for hands-free operation. Reconfigure if necessary.
Make sure that the cards belong to the vehicle and are properly configured by running command SC005 Check
card.
If the cards belong to the vehicle but are incorrectly configured, program the cards.
Run command AC037 Transmitter aerial fault finding and see if a fault appears.
In the event of a present or stored fault, refer to the procedure for it.
If the vehicle is fitted with a tyre pressure monitor (Scénic II only), check that the external UCH aerial is correctly
connected.
Run command AC036 Interior aerial test and check the card coverage zone.
The card reader starts to flash as soon as a card is detected in the coverage zone.
The card should not be detected by the internal aerials when it is outside the vehicle.
If not correct, apply the relevant fault finding procedure for each command.
This mode allows of a Mégane hands-free type card to be detected as present, but not recognised.
Check the part number of the UCH and that it is hands-free.
If the fault is still present, contact the Techline.
AFTER REPAIRCarry out a complete check with the diagnostic tool.
UCH_V44_ALP42 /UCH_V48_ALP42/UCH_V4C_ALP42/
UCH_V4D_ALP42/UCH_V4F_ALP42/UCH_V50_ALP42
