Renault Megane Quiz
Air conditioning

Preliminaries

In this manual: Air conditioning
Engine and peripherals — 141Chassis — 79Chassis — 72Renault Mégane III Driver's Manual — 87Electrical equipment — 221Engine and peripherals — 47Electrical equipment — 80Transmission — 14Air conditioning — 30Bodywork — 115Trim and upholstery — 44General vehicle information — 27Air conditioning — 59General vehicle information — 16Transmission — 38Sealing and soundproofing — 7General vehicle information — 3
~2min read

1. APPLICABILITY OF THIS DOCUMENT

This document covers the diagnosis applicable to all manual air conditioning systems with the following characteristics:

Vehicle(s): MEGANE. Function concerned: air conditioning

2. ESSENTIAL ITEMS FOR DIAGNOSIS

Documentation type:

Diagnostic methods (this document):

  • Paper (Repair Manual or Technical Note), Dialogys.

Wiring diagrams:

  • Visu-Schéma (CD-ROM), paper.

Essential tool type:

ESSENTIAL SPECIALIST TOOLS

Multimeter and oscilloscope

3. REMINDERS

This air conditioning system has no control unit and therefore cannot be diagnosed with the diagnostic tool.

The air conditioning function is distributed across the Cabin Central Unit, the Protection and Switching Unit, and the injection system.

This note therefore only covers diagnosis by customer complaints. Refer to chapter 62A and to the diagnosis of the control units involved in the air conditioning function to complete the manual air conditioning diagnosis.

Customer symptoms - Fault location tree

If the diagnostic tool check is correct but the customer complaint is still present, deal with the problem using "customer complaints".

A summary of the overall procedure is shown as a flowchart on the next page.

4. DIAGNOSTIC PROCEDURE

Préliminaires

5. DIAGNOSTIC SHEET

WARNING: All faults on a complex system must be diagnosed in full using the appropriate tools. The DIAGNOSTIC SHEET, which must be completed during diagnosis, provides and keeps a record of the diagnosis performed. It is an essential element of communication with the manufacturer.

A DIAGNOSTIC SHEET MUST BE COMPLETED EVERY TIME A DIAGNOSIS IS PERFORMED.

This sheet will always be requested:

  • When requesting technical assistance from Techline.
  • For approval requests, when replacing parts that require mandatory approval.
  • To be attached to the "monitored" parts returned. It is then required for warranty reimbursement and helps with a better analysis of the removed parts.

6. SAFETY INSTRUCTIONS

Any operation on a component requires compliance with safety rules to avoid any material damage or personal injury:

  • Check that the battery is correctly charged to avoid damage to the ECUs in case of low charge.
  • No smoking.
  • Use the appropriate tools.

Test yourself

A quick Renault Megane quiz: every answer comes with an explanation and a link to the manual page.