light RENAULT SCENIC 2009 J84 / 2.G Air Conditioning Climate Control User Guide

62B-54
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
ALP 13 No control panel lighting
NOTESOnly refer to this customer complaint after a full check of the multiplex network
and the air conditioning with the fault finding tool.
Special notes:
With the ignition on, the control panel screen is permanently on but the panel buttons
only light up when the sidelights are switched on.
Note:
If the external temperature sensor is faulty, the climate control computer is
switched on 5 seconds after the ignition is switched on (this allows a fault to be
identified as fault finding cannot be performed on the external temperature sensor
by the UCH).
Is the fault common to other components (instrument panel,
multifunction display, electric window buttons, etc.)?
YES
Switch on the ignition and switch on the side lights to check
there is a 12 V supply on track 6 of the brown 12-track
connector (PPH2) of the Protection and Switching Unit.
Is there a 12 V supply?
YES
Check the connection and the condition of the connectors at the air conditioning control panel
output.
Repair if necessary.
Check the insulation, continuity and absence of interference resistance on the following
connection:
Air conditioning computer 12-track connector
track 9
Repair if necessary.Protection and Switching Unit brown 12-track
(PPH2) connector
track 6
NO
NOPerform fault finding on the
protection and switching unit.
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2

62B-55
CLIMATE CONTROL
Fault finding – Fault Finding Chart62B
V3 MR-372-J84-62B000$110.mif
Vdiag No.: 44
ALP 13
CONTINUED
Using the diagnostic tool and the conformity
check in this document, check that the lighting
rheostat is working correctly using parameter
PR122 Night-time lighting level.
Does the parameter vary?
YES
Is the fault still present?
YES
Contact your TECHLINE.
NO
NO Use the diagnostic tool to check the
instrument panel (which is providing the 0 V
rheostat controlled information).
If fault DF037 "Instrument panel lighting
rheostat" is present: apply the associated fault
finding procedure (see corresponding
section).
If no faults are present or stored: run fault
finding on the multiplex network (the 0 V
rheostat controlled signal is reaching the air
conditioning control panel on the multiplex
network).
End of fault finding procedure.
AFTER REPAIRPerform a complete check using the diagnostic tool.
ACREG X84 1.1
Edition 2