62A - 3
AIR CONDITIONING
Fault finding - Introduction62A
V4
Manual air conditioning
and
Climate control162AAIR CONDITIONING
Fault finding - Introduction
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding procedure applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type
Fault Finding Procedures (this document and the Technical Notes for the injection fitted to the
vehicle, the UCH and the Protection and Switching Unit:
–Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
–Visu-Schéma (CD-ROM), paper version.
Type of diagnostic tools
–CLIP
Special tooling required
3. RECAP
Procedure
To run fault finding on the vehicle's computers, switch on the ignition in fault finding mode (forced + after ignition
feed).
Proceed as follows:
–Renault card in the card reader (keyless vehicle scenario 1, entry level, not hands-free and scenario 2, top of the
range, hands-free)
–press and hold the Start button (longer than 5 seconds) with start-up conditions not fulfilled,
–connect the diagnostic tool and perform the desired operations.
To cut off + after ignition feed, proceed as follows:
–disconnect the diagnostic tool,
–press the Start button twice briefly (less than 3 seconds),
–check that the + after ignition feed has been cut off by checking that the computer warning lights on the instrument
panel have gone out. Vehicle: Scenic II
Function concerned: air conditioning
SPECIAL TOOLING REQUIRED
Multimeter
Elé. 1681Universal bornier
Note:
The left-hand and right-hand xenon bulb computers are powered when the dipped beam headlights light up. Fault
finding procedures can only be carried out on them after the ignition has been switched on in fault finding mode
(forced + after ignition feed) and the dipped headlights are on.
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$020.mif
62A - 12
AIR CONDITIONING
Fault finding - Mode of operation62A
V4MR-372-J84-62A000$010.mif
Manual air conditioning
and
Climate control
Block diagram of components controlled or managed by the control panel of heater
versions without air conditioning
Ventilation unit
Passenger
compartment
blower
Resistor
unitRecircu-
lation flapDistribution
flapMixing
flap
Vehicle multiplex
network
Actuator control
user control panel
Button lights (heated rear
screen button)Passenger
compartment blower
operation signal
(running or stopped)User request
management (heated
rear screen button
pressed)
UCH
Transmission of the request
to switch on the heated rear
screen
Key:
Wire connections =
Multiplex connections =
Mechanical connections =
(cable controls)
CLIM X84 1.1
Edition 2
MR-372-J84-62A000$040.mif
