2009 RENAULT TWINGO RS air condition

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-65
MR-413-X44-87B000$432.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
UCH
Vdiag No.: 44
87B
DF139
PRESENT
OR
STOREDCOURTESY LIGHT
CC.1: Short circuit to + 12 volts
NOTESThe fault is declared present after:
Opening at least one door.
OR
Running AC063 Switching the interior lights on and off.
Check the correct operation of status ET463 Door(s) or tailgate.
Check the condition and connection of the 6-track connector of the front interior lighting (component code 213)
and connector PE1 of component 645 (tabs bent, oxidised, broken).
Check for + 12 V on connection BPT of component 213.
Check the continuity and insulation of the following connections:
●Connection code BTP, between components 213 and 645.
●Connection code 13E between components 213 and 645.
●Connection code MAM between component 213 and earth MAM.
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 operation of the rabbet switches using ET463 Door(s) and tailgate.
If the supply, earths and connections are correct, replace the courtesy light (component code 213).
(See MR 411, Mechanical 81B, Interior lighting, courtesy light: 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_DF139

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-67
MR-413-X44-87B000$432.mif
V5
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Interpretation of faults
UCH
Vdiag No.: 44
87B
DF212
PRESENT
OR
STOREDALARM CIRCUIT
CC.0: Short circuit to earth
NOTESIf the vehicle is fitted with an alarm:
Check that the vehicle is configured with an alarm (component code 442).
Check that LC126 Alarm is definitely With. Otherwise, perform CF229 Alarm.
Check the condition and presence of fuses F6 (15 A) and F46 (15 A). Replace if necessary.
Check the condition and connection of the horn connector (component code 442) (tabs bent, oxidised, broken).
Check the continuity and insulation of the following connections:
●Connection code 20M between components 442 and 645.
●Connection code 64Q between components 442 and 645.
●Connection code AP3 between components 442 and 260.
●Connection code BCP4 between components 442 and 260.
●Connection code MG between component 442 and earth.
●Connection code 80A between components 442 and 438.
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_DF212

87B-74
MR-413-X44-87B000$480.mif
V5
UCH
Vdiag No.: 44PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87B
FUNCTION: AIR CONDITIONING
SUB-FUNCTION: USER SELECTION
* CPE: Electric central door locking.
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
NotesFault finding
User selectionET028:Heated rear screen
buttonDEPRESSED
RELEASEDIn the event of a fault, refer to
the interpretation of status
ET028.
ET029:Air conditioning
buttonDEPRESSED
RELEASEDIn the event of a fault, refer to
the interpretation of status
ET029.
ET015:Passenger
compartment blowerRUNNING
STOPPEDIn the event of a fault, refer to
the interpretation of status
ET015.
AC015:Air conditioning
button indicator lightThis command is used to test
the operation of the air
conditioning button indicator
light.In the event of a fault, refer to
the interpretation of DF042.
AC019:Heated rear screen
indicator lightThis command is for testing
operation of the heated rear
screen indicator light.In the event of a fault, refer to
the interpretation of DF041.
AC020:CPE* button
indicator lightThis command is used to
operate the electric central
locking button.In the event of a fault, refer to
the interpretation of DF082.
AC052:Hazard warning
lights indicator lightThis command is used to
activate the hazard warning
lights.In the event of a fault, refer to
the interpretation of DF134.

87B-75
MR-413-X44-87B000$480.mif
V5
UCH
Vdiag No.: 44PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87B
FUNCTION: AIR CONDITIONING
SUB-FUNCTION: HEATING
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
HeatingET015:Passenger
compartment
blowerRUNNING
STOPPEDIn the event of a fault, consult the
interpretation of status ET015.
ET239:Ignition switch
position+ after ignition feed.
STARTING
ACCESSORIES FEEDIn the event of a fault, refer to the
interpretation of status ET239.
PR025:Engine speed0 rpmIn the event of a fault, carry out a fault
finding on the multiplex network
(see 88B).
And (see 17B, Petrol Injection,
Conformity check, Protection) or
(see 13B, Diesel Injection,
Conformity check, Protection).
PR001:Battery voltage9 V < X < 16 VIn the event of a fault, run fault finding
on the charging circuit (see 80A,
Battery).
PR002:External
temperature˚CIn the event of a fault, refer to the
interpretation of parameter PR002.
PR024:Engine coolant
temperature˚CIn the event of a fault (see 17B,
Petrol Injection, Conformity check,
Protection) (see 13B, Diesel
Injection, Conformity check,
Protection).
AC060:Rear screen de-
icerThis command is used to
test the operation of the
rear screen de-icer.In the event of a fault, refer to the
interpretation of command AC060.
AC110:Temperature
displayImportant: this command
lasts approximately
30 seconds.
This command is for testing
the display.In the event of a fault, refer to the
interpretation of command AC110.

87B-76
MR-413-X44-87B000$480.mif
V5
UCH
Vdiag No.: 44PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Conformity check87B
FUNCTION: AIR CONDITIONING
SUB-FUNCTION: COLD LOOP
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
Cold loopPR002:External
temperature˚CIn the event of a fault, refer to the
interpretation of parameter
PR002.
ET142:Engine operating
phaseSTOPPED
STARTING
RUNNING
STALLEDIn the event of a fault, refer to the
interpretation of status ET142.
ET015:Passenger
compartment
blowerRUNNING
STOPPEDIn the event of a fault, refer to the
interpretation of status ET015.
ET030:Air conditioning
requestThis request is sent by the
UCH to the engine
management computer.
There are two possible
scenarios:
1
st scenario: vehicle equipped
with manual air conditioning.
The request is made by
pressing the air conditioning
button.
2
nd scenario: vehicle
equipped with climate control.
The request is made following
a user request or climate
control computer request.In the event of a fault, refer to the
interpretation of status ET030.
PR025:Engine speed0 rpmIn the event of a fault, run fault
finding on the multiplex network
(see 88B, Multiplex) then run
fault finding on the injection
system (see 13B, Diesel
injection or 17B, Petrol
injection).

87B-84
MR-413-X44-87B000$528.mif
V5
87B
PASSENGER COMPARTMENT CONNECTION UNIT
Fault finding - Status summary table
*CPE: Electric central door locking
*RF: radio frequencyTool status Diagnostic tool title
ET008Blank UCH
ET015Passenger compartment blower
ET027Windscreen wiper park position
ET028Heated rear screen button
ET029Air conditioning button
ET030Air conditioning request 2
ET044CPE* button
ET045RF* signal. received
ET046Engine immobiliser
ET047Brake pedal position
ET061Open tailgate request
ET077Wiper stalk position
ET078Windscreen washer request
ET079Rear screen washer request
ET080Rear screen wiper request
ET081Lighting switch position
ET082Rear fog lights request
ET083Left-hand indicator request
MR-413-X44-87B000$528.mif
UCH
Vdiag No.: 44