87B-55
MR-413-X44-87B000$432.mif
V5
87B
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
With automatic headlighting:DF109
PRESENT
OR
STORED
REAR FOG LIGHTS CONTROL CIRCUIT
CC.1: Short circuit to + 12 volts
CC.0: Open circuit or short circuit to earth
NOTESConditions for applying the fault finding procedure to stored faults:
If the fault reappears as present after:
The ignition is switched on and the rear fog lights are activated.
OR
Running AC009 Rear fog lights.
Note:
This fault only appears on vehicles fitted with automatic daytime running lights. Check
the presence of the rain/light sensor (component code 1415), then:
Check that the vehicle is configured with a rain/light sensor (component code 1415):
–Check that LC044 Rain/light sensor displays Present. If not, perform CF035
Rain/light sensor.
–Check that LC096 Automatic wiper function displays With. If not, carry out
CF194 "Automatic wiper function".
–Check that LC095 Automatic headlight function displays With. If not, carry out
CF193 "Automatic headlight function".
Check the presence and condition of fuses F15 (5 A), F20 (15 A), F25 (5 A), F39 (10 A) in the passenger
compartment fuse and relay box (component code 1016).
Replace the fuse if necessary.
Check the presence and condition of the rear fog lights relay (component code 230) (20A).
Replace the rear fog lights relay (component code 230) if necessary.
Check the correct positioning and condition of the bulb concerned. Replace the light if necessary.
Check the condition and connection of the light concerned (bent, oxidised, broken tabs).
connection of the UCH PE2 connector (component code 645) (tabs bent, oxidised, broken).
Check the condition and connection of the control stalk connector (component code 209) (tabs bent, oxidised,
broken).
Check for + 12 V (when there is a rear fog lights request) on connection 9P of components 172 and 173.
Check for earth on connection MF of component 172 and connection MYH on component 173.
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 REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF109
MR-413-X44-87B000$432.mif
UCH
Vdiag No.: 44
87B-57
MR-413-X44-87B000$432.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
UCH
Vdiag No.: 44
87B
DF133
PRESENT
OR
STOREDDEADLOCKING MOTOR(S) CIRCUIT
CC.1: Short circuit to + 12 volts
CO.0: Open circuit or short circuit to earth
NOTESConditions for applying the fault finding procedure to stored faults:
If the fault reappears as present after:
The ignition is switched on and the deadlocking button has been pressed.
OR
Activation of AC035 Deadlocking.
Check that LC003 Deadlocking is definitely With. Otherwise, perform CF009
Deadlocking.
Check that LC040 Locking when driving is definitely With. Otherwise, perform
CF008 Locking when driving.
Ensure that the central door locking is correctly fixed; there must be no objects
preventing the central door locking from operating correctly.
Check that the doors and tailgate are closed correctly during the electrical
checks.
Check the presence and condition of fuse F14 (20 A) in the passenger compartment fuse and relay box
(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).
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.
Check the condition and connection of the electric central door locking connectors for the driver's and passenger's
doors (tabs bent, oxidised, bent etc.).
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.
When deadlocking, check the signal status on components 140 and 141 of the following connections using an
oscilloscope (refer to test1 Central door locking).
Right or left-hand door locks:
Oscilloscope red test pin on connection 20AP of component 140 or 141.
Oscilloscope black test pin on connection 20C of component 140 or 141.
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 REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF133
87B-60
MR-413-X44-87B000$432.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
UCH
Vdiag No.: 44
87B
DF134
PRESENT
OR
STOREDHAZARD WARNING LIGHTS INDICATOR LIGHT CIRCUIT
CC.0: Short circuit to earth or short circuit to + 12 V
NOTESConditions for applying the fault finding procedure to stored faults:
If the fault reappears as present after:
Switching on the ignition and pressing the hazard warning lights button.
OR
Activating AC52 Hazard warning lights indicator light.
Note: If the hazard warning lights do not light up during emergency braking, check
that LC018 Illumination of hazard warning lights by ABS is definitely With.
Otherwise, run CF024 Illumination of hazard warning lights by ABS.
Check the presence and condition of fuse F42 (10 A) in the passenger compartment fuse and relay box
(component code 1016).
Replace the fuse if necessary.
Check the condition and connection of the central door locking/warning switch connector (component code
1391) (tabs broken, bent, oxidised).
Check the condition and connection of connectors PE1 and PE2 of the UCH (component code 645) (tabs bent,
oxidised, broken).
Check for + 12 V on connection LPD of the locking/warning switch (component code 1391).
Check for earth on connection MAN of the locking/warning switch (component code 1391).
If the connector or 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.
Switch check:
Check the insulation, continuity and the absence of interference resistance of the following connections:
●Connection code 64F between components 1391 and 645.
●Connection code 64Q between components 1391 and 645.
●Connection code MAN between component 1391 and earth MAN.
●Connection code LPD between components 1391 and 1016.
●Connection code 20AM between components 1391 and 645.
●Connection code 20AW between components 1391 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.
If the supply, earth and connections are correct, replace the door locking/warning switch (component code
1391) (see MR 411 Mechanical 84A, Control - Signals, Hazard warning lights and central door locking:
Removal - Refitting).
If the problem is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF134
87B-61
MR-413-X44-87B000$432.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
UCH
Vdiag No.: 44
87B
DF135
DF136
PRESENT
OR
STOREDRAIN DETECTOR
LIGHT SENSOR
1.DEF: Internal electronic fault
NOTESConditions for applying the fault finding procedure to stored faults:
If the fault reappears as present after:
Switching on the ignition, activating automatic headlight lighting by moving the control
stalk twice in quick succession as follows: control stalk (component code 209) to
position zero ΑΕ control stalk (component code 209) to side lights position.
Status ET114 "Wiper request from rain sensor" should be "Low speed" or "High
speed" when the water runs over the position of the rain/light sensor on the
windscreen or status ET115 "Request for lights to be switched on from light
sensor" should be "Present" when an opaque cover is placed over the rain/light
sensor.
Note:
If there is an open circuit on connection BPT, there will be a malfunction on the
electric window winders, on the rain/light sensor, on the interior lights and the boot
lighting.
Check that the vehicle has a rain/light sensor (component code 1415).
Check that the vehicle is configured with a rain/light sensor (component code 1415).
Check that LC044 Rain/light sensor is Present. If not, perform CF035 Rain/light sensor.
Check that LC096 Automatic wiper function displays With. If not, carry out CF194 "Automatic wiper
function".
Check that LC095 Automatic headlight function displays With. If not, carry out CF193 "Automatic headlight
function".
Check the condition and position of supply fuses F2 (15 A), F8 (15 A), F19 (5 A), F27 (5 A) according to the
equipment, F29 (15 A) of the rain/light sensor (component code 1415) on the passenger compartment fuse and
relay box (component code 1016).
Replace the fuse if necessary.
Check the condition and connection of the 3-track connector of the rain/light sensor (component 1415) (tabs
bent, broken or oxidised).
Check the condition and connection of the PE2 connector of the UCH, (component code 645) (tabs bent,
oxidised, broken).
Check for + 12 V on connection BPT of component 1415.
Check for earth on connection MAM of component 1415.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF135 / UCH_V44_DF136
87B-63
MR-413-X44-87B000$432.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
UCH
Vdiag No.: 44
87B
DF137
PRESENT
OR
STOREDUCH - ALTERNATOR CONNECTION
CO : Open circuit
1.DEF : Dialogue disrupted
CC.0 : Short circuit
NOTESThe fault is declared present after:
Switching on the ignition, starting the engine and waiting 30 seconds.
Check that the engine type is entered correctly using the configuration reading "Check
that LC023 Engine Type is correct". Otherwise perform CF028 Engine type.
Customer complaint:
The battery warning light comes on when the fault appears and goes out 10 seconds
after the fault disappears.
Note:
For petrol vehicles, the fault can be linked to a fault on the anti-interference capacitor
if it is present.
Check the condition and connection of the 2-track connector of the alternator (component code 103) and
connector PE1 of component 645 (tabs bent, oxidised, broken).
Check that the voltage is between 5 V and 10 V on connection 2N between components 103 and 645.
Check the continuity and insulation of the following connections:
●Connection code 2N between components 103 and 645.
●Connection code BPDA between components 103 and 163.
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 problem is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF135 / UCH_V44_DF136
87B-64
MR-413-X44-87B000$432.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
UCH
Vdiag No.: 44
87B
DF138
PRESENT
OR
STOREDALTERNATOR
1.DEF: Mechanical or electrical fault
2.DEF: Temperature fault
NOTESThe fault is declared present after:
Switching on the ignition, starting the engine and waiting 1 minute in the event of an
electrical or mechanical fault.
In the event of a temperature fault, run the engine until the engine cooling fans are
triggered.
Effect on system:
The fault is hidden for 3 seconds, the alternator voltage setpoint is 14.3 V and the on-
board network voltage is equal to 14.3 V if the alternator can still regulate. Regulation
resumes as soon as the fault disappears.
Effect on system:
The battery warning light comes on when the fault appears and goes out as soon as
the fault disappears.
Check for the presence, condition and fitting of the alternator belt. (See MR 411, Mechanical, 11A, Top and front
of engine, Accessories belt: Removal - Refitting).
Remove the accessories belt (MR411, Mechanical, 11A Top and front of engine, Accessories belt, Removal -
Refitting).
Check that the alternator pulley is not offset against its axis.
Check that the alternator pulley turns freely on its axis.
Check that the continuity and electrical insulation of the rotor coil is correct. Check that there is no sign of the rotor
overheating. (See MR 411, Mechanical 16A, Starting - Charging, Charging circuit: Check).
Perform a charging circuit test (see 80A, Battery).
If the fault is still present, replace the alternator (component code 103) (see MR 411, Mechanical 16A,
Starting - Charging, Alternator: Removal - Refitting).
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF138
87B-66
MR-413-X44-87B000$432.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
UCH
Vdiag No.: 44
87B
DF140
PRESENT
OR
STOREDVOLTAGE REGULATION
1.DEF: Voltage too low
2.DEF: Voltage too high
NOTESThe fault is declared present after:
switching on the ignition and waiting 1 minute.
Note:
The on-board network voltage is less than 0.89 times the battery voltage setpoint.
The battery may be used to supply all of the energy. The alternator voltage setpoint is
fixed as soon as the fault appears. Once the fault has been confirmed, the alternator
voltage setpoint is 14.3 V. Regulation resumes as soon as the fault disappears.
Effect on system:
The battery warning light comes on when the fault appears and goes out as soon as
the fault disappears.
Run command AC130 Alternator regulation without any electrical consumers:
–Wait 20 seconds.
–For 10 seconds, the voltage of the alternator (component code 103) should be equal to 15 V +/- 0.2 V at the
battery terminals.
–Wait 20 seconds.
–For 10 seconds, the voltage of the alternator (component code 103) should be equal to 13 V +/- 0.2 V at the
battery terminals.
If the voltages are not correct (see 80A, Battery, and see 16A, Starting charging).
Run command AC130 Alternator regulation without any electrical consumers:
–Wait 20 seconds.
–For 10 seconds the voltage of the alternator (component code 103) should be equal to 15 V + /- 0.2 V at the
terminals of the alternator (between the + terminal of the alternator (component code 103) and the engine
earth).
–Wait 20 seconds.
– For 10 seconds the voltage of the alternator should be equal to 13 V + /- 0.2 V at the terminals of the
alternator (component code 103) (between the + terminal of the alternator (component code 103) and the
engine earth).
If the voltages are not correct, check the conformity of the engine earth.
Check the condition and connection of the 1-track connector of component 103 (tabs bent, oxidised, broken).
Check for + 12 V on connection BPDA of component 103.
Check the continuity and insulation of the following connections:
●Connection code BPDA between components 103 and 163.
●Connection code 2N between components 103 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.
If the problem is still present, contact the Techline.
AFTER REPAIRCarry out another fault finding check on the system.
Clear the stored faults.
Deal with any other faults.
UCH_V44_DF140
87B-68
MR-413-X44-87B000$480.mif
V5
87B
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check
MAIN SCREEN
NOTESOnly carry out this conformity check after a complete check with the diagnostic tool
(fault reading and configuration checks).
Application condition: engine stopped, + after ignition feed present.
FunctionParameter or Status
Checked or ActionDisplay and notes Fault finding
Electrical suppliesPR001:Battery voltage9 V < X < 16 VIn the event of a fault, run fault
finding on the charging
circuit (see 80A, Battery).
Ignition switch positionET239:Ignition switch
position+ after ignition feed.In the event of a fault, refer to
the interpretation of status
ET239.
Brake pedalET047:Brake pedal positionDEPRESSED
RELEASEDIn the event of a fault, refer to
the interpretation of status
ET047.
Engine operation.ET142:Engine operating
phaseSTOPPED
STARTING
RUNNING
STALLEDIn the event of a fault, consult
the interpretation of status
ET142.
Engine speedPR025:Engine speed0 rpmIn the event of a fault, run fault
finding on the injection
system (see 13B, Diesel
injection or 17B, Petrol
injection).
Vehicle speedPR008:Vehicle speed0 mphIn the event of a fault, run fault
finding on the ABS system
(see 38C, Anti-lock braking
system).
UCH_V44_CCONF
MR-413-X44-87B000$480.mif
UCH
Vdiag No.: 44