87B -125
MR-413-X44-87B000$624.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
With automatic headlighting:ET111
FRONT FOG LIGHTS REQUEST
NOTESThere must be no present or stored faults.
Check that the LC015 Front fog lights is definitely With. Otherwise, use command
CF021 Front fog lights.
Note:
The signal can only be interpreted if the function is managed by the UCH (component
code 645) (vehicle equipped with one-touch fog light control).
SPECIFICATIONSPRESENT
ABSENT
Use AC008 Front fog lights to check that the front fog lights operate correctly.
Check the presence and condition of fuses F15 (5 A), F20 (15 A), F25 (5 A), in the passenger compartment fuse
and relay box (component code 1016).
Replace the fuse if necessary.
Check the correct positioning and condition of the bulb concerned. Replace the light if necessary.
Check the condition and connection of the front fog light concerned (bent, oxidised, broken tabs).
Check the condition and connection of the PE2 connector of the UCH, (component code 645) (tabs bent,
oxidised, broken).
Check the condition and connection of the control stalk connector (component code 209) (tabs bent, oxidised,
broken).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Check for + 12 V (when there is a rear fog lights request) on connection 8B of components 176 and 177. Check
for earth on connection MAR of component 176 and connection MAS of component 177.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET111
87B -128
MR-413-X44-87B000$624.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET114
ET115
WIPER REQUEST BY RAIN SENSOR
LIGHT ACTIVATION REQUEST BY LIGHT SENSOR
NOTESThere must be no present or stored faults.
Make sure that the vehicle is fitted with the rain and light sensor.
The status should change to LOW SPEED or HIGH SPEED if there is water on the
windscreen where the sensor is positioned.
The status should change to PRESENT when the light intensity requires the lights to
be switched on with the engine running.
Make sure that the other positions of the wiper control are working properly
Check the following configurations:
–Check that LC008 Daytime running lights is "With". Otherwise run CF014
Daytime running lights.
–Check that LC044 Rain/light sensor displays "Present". If not, run CF035 Rain/
light sensor.
–Check that LC095 Automatic headlight function displays "With". If not, run
CF193 Automatic headlight function.
–Check that LC096 Automatic wiper function displays With. If not, run CF194
Automatic wiper function.
SPECIFICATIONSET114: ABSENT/LOW SPEED/HIGH SPEED
ET115: PRESENT/ABSENT
Conditions:
Check that the switch stalk (component code 209) is in the intermittent position so that automatic operation can
be activated.
Check that the vehicle has a rain/light sensor (component code 1415).
Check that the function is not deactivated, perform the following cycle twice to activate the automatic headlight
function: Switch stalk (component code 209) OFF → Σωιτχη σταλκ (χοµπονεντ χοδε 209) to side lights ON
position.
Check the condition and connection of the 3-track connector of the rain/light sensor (component 1415) (tabs
bent, broken or oxidised).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Check for + 12 V on connection BPT of component 1415.
Check for earth on connection MAM of component 1415.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET114 / UCH_V44_ET115
87B -132
MR-413-X44-87B000$624.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET185
KEY CODE RECEIVED
NOTESThere must be no present or stored faults.
Apply the checks only if the status is NO with the ignition on.
SPECIFICATIONSYES
NO
Check that there are no powerful electromagnetic wave sources (CB (Citizen Band), mobile phone in close
proximity to the transponder ring).
Switch the ignition off and then on again.
Check that fuse F8 (15 A) is sound and correctly fitted in the passenger compartment fuse and relay box.
Replace the fuse if necessary.
Try the vehicle's second key.
If the status changes to YES, replace the first key and program the keys using command SC015 Key allocation.
This status tells you whether the UCH has received the immobiliser code from the key.
If the status remains NO, check the connection between the transponder ring (component code 1618) and the
UCH (component code 645).
Check the + 12 V feed on connection AP43 of component 1618.
If the connection is faulty and there is a repair procedure (see Technical Note 6015A, Electrical wiring repair,
Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Check that the earth on track 2 of the transponder ring is in perfect condition.
Check the insulation, the continuity and the absence of interference resistance on the following
connections:
●Connection code AP43 between components 1016 and 1618.
●Connection code 80X between components 645 and 1618.
●Connection code 80Y between components 645 and 1618.
●Connection code NAM between component 1618 and earth.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET185
87B -133
MR-413-X44-87B000$624.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
* RF: radio frequencyET186
ET189
SHORT PRESS ON DOOR CLOSING BUTTON
DOOR OPENING BUTTON PRESSED
NOTESThere must be no present or stored faults.
Check that LC097 Key type is definitely RF*. Otherwise run CF195 Key type and
select RF*.
Check the operation of statuses ET045 R.F.* signal received and ET193 RF* signal
from a key allocated to the vehicle.
Note:
The key must not be in the ignition switch.
Signal can be interpreted if the ignition is switched off (key removed from the
ignition switch).
SPECIFICATIONSACTIVE
INACTIVE
Check the condition of the key battery and of the button contacts.
Replace the battery if necessary.
Try the vehicle's second key.
If the status changes to Active, replace the first key and allocate the keys using command SC015 Key allocation.
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET186 / UCH_V44_ET189
87B -135
MR-413-X44-87B000$624.mif
V5
UCH
Vdiag No.: 44PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses87B
* Powerlatch: Time required for injection computer supply after + 12 V after ignition feed cut-off. ET229
INJECTION IMMOBILISER CODE
NOTESThere must be no present or stored faults.
Only apply the checks if the status is NOT PROGRAMMED or NOT DETERMINED
after activating the + After ignition feed for 20 seconds; switch off the ignition, wait for
the end of Powerlatch (20 minutes maximum), and then switch on the ignition again.
SPECIFICATIONSUNDETERMINED
NOT PROGRAMMED
PROGRAMMED
STATUS
NOT
PROGRAMMED
Run command SC017 Program injection immobiliser code.
STATUS
UNDETERMINEDSwitch the ignition off and then on again.
First check whether statuses ET046 Immobliser, ET181 Key allocated to the vehicle
and ET239 Position of the ignition switch are correct.
Carry out a multiplex network test (see 88B, Multiplexing).
Carry out fault finding on the injection system (see 13B, Diesel injection or 17B,
Petrol injection).
Check the condition of the injection computer connectors.
Check that the + 12 V supply and injection computer earth (component code 120) are
in order.
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET229
87B -136
MR-413-X44-87B000$624.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
ET239
IGNITION SWITCH POSITION
NOTESThere must be no present or stored faults.
SPECIFICATIONS+ APC
+ START
+ ACCESSORIES FEED
Check the correct position and condition of fuses F2 (60A) in the engine fuse and relay box (component code
597) and F8 (15A) in the passenger compartment fuse and relay box (component code 1016).
Replace the fuse if necessary.
Check the condition and connection of the starter switch connector (component code 104) (tabs bent, broken,
oxidised).
Check the condition and connection of the PE1 connector of the UCH, (component code 645) (tabs bent,
oxidised, broken).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Check for +12 V on connection AP29 of component 232.
Check the insulation, continuity and the absence of interference resistance on the connections between the
UCH (component code 645) and the ignition switch (component 104):
●Connection code A between components 104 and 1016.
●Connection code BP12 between components 104 and 597.
●Connection code AP43 between components 1016 and 645.
●Connection code D between components 104 and 232.
●Connection code 1B between components 232 and 645.
●Connection code AP29 between components 1016 and 232.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
If the connections are in order, replace the ignition switch (component code 104).
(See MR 411 Mechanical 82A, Immobiliser, Ignition switch: Removal - Refitting).
If the fault is still present, contact the Techline.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET239
87B -139
MR-413-X44-87B000$624.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of statuses
UCH
Vdiag No.: 44
87B
With deadlocking:ET463
DOOR(S) OR TAILGATE
NOTESThere must be no present or stored faults.
Status ET463 must be "Open" when at least one of the doors or tailgate is open
and must be "Closed" when all of the doors and tailgate are closed.
Note:
The tailgate lock (electric central door locking) must only be used to open the
luggage compartment and not to close it.
SPECIFICATIONSOPEN
CLOSED
Check the following configurations:
–Check that LC097 Key type is definitely RF depending on the vehicle equipment level. Otherwise run
CF195 Key type.
–Check that LC003 Deadlocking is definitely With. Otherwise, run CF009 Deadlocking.
–Check that LC040 Locking when driving is definitely With. Otherwise, run CF108 Locking when driving.
–Check that LC093 Central door locking is definitely With. Otherwise run CF192 Central door locking.
Check the presence and condition of the fuse F14 (20 A) (for vehicles equipped with deadlocking) in the passenger
compartment fuse box and relay, (component code 1016).
Replace the fuse if necessary.
Check the condition and connection of connectors PE1, PE2 and PE3 of the UCH (component code 645) (tabs
bent, oxidised, broken).
Check the condition and connection of the electric central door locking connectors for the driver (component code
140) and passenger's doors (component code 141) and the tailgate (component code 1322) (tabs bent, broken,
oxidised).
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Door locks:
Check for + 12 V on connection BP3 of component 1042.
Check for + 12 V on connection 86H of component 140 or 141.
Check for earth on connection MAM of component 1042.
Check for earth on connection MAN of component 140 or 141.
AFTER REPAIRRepeat the conformity check from the start.
Carry out fault finding on the system.
UCH_V44_ET463
87B -145
MR-413-X44-87B000$720.mif
V5
87B
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of parameters
PR002
EXTERNAL TEMPERATURE
NOTESOnly apply the checks if the parameter is inconsistent.
Special notes:
Check that LC002 "External temperature sensor" is "WITH". Otherwise perform
CF029 "External temperature sensor".
Check that LC067 "External temperature display" is "WITH". Otherwise perform
CF171 "External temperature display".
Note:
If the exterior temperature sensor (component code 245) is disconnected or the vehicle is not equipped with an
exterior temperature sensor, the temperature displayed is the default temperature of 215 ˚C.
Check the 12-track temperature sensor connector, (component code 245) (tabs bent, oxidised, broken, etc.).
Check the PE2 40-track connector of the UCH, component code 645 (tabs bent, oxidised, broken).
If the connector is faulty and there is a repair method (see Technical Note 6015A, Repairing electrical wiring,
Wiring: Precautions for repair), repair the wiring, otherwise replace the wiring.
Check the insulation, continuity and the absence of interference resistance on the following connections:
●Connection code 47D between components 240 (for left-hand drive vehicles) or 239 (for right-hand drive
vehicles) and 645.
●Connection code 47C between components 240 (for left-hand drive vehicles) or 239 (for right-hand drive
vehicles) and 645.
If the connection or connections are faulty and there is a repair procedure (see Technical Note 6015A, Electrical
wiring repair, Wiring: Precautions for repair), repair the wiring, otherwise replace it.
Measure the resistance of the connector sensor disconnected from connections 47C and 47D.
Temperature (˚C)
1
5
10
15
20
25
30
35Sensor resistance (Ω) ± 50 Ω
5980
5020
4280
3530
2900
2300
2010
1620
Replace the exterior temperature sensor (component code 245) if not correct. (See MR 411 mechanical
systems 62A, air conditioning, Exterior air temperature sensor: Removal - Refitting).
If the fault is still present, contact Techline.
UCH_V44_PR002
MR-413-X44-87B000$720.mif
UCH
Vdiag No.: 44