13B-Diesel Injection - Diagnostics.pdf - Diagnostyka VAG,VGA,PCM COM - cobra519

113B

DDCR INJECTION

PROGRAM no.: BE88

VDIAG No.: 44

Fault finding - Introduction 13B

DIESEL INJECTION

1. SCOPE OF THIS DOCUMENT

This document presents the fault finding method applicable to all computers with the following characteristics:

Vehicle(s): MEGANE II

Function involved: DELPHI K9 DIESEL DIRECT

COMMON RAIL INJECTION (DDCR)

Computer name: DDCR INJECTION

Program no.: BE 88

VDIAG No.: 44

2. PREREQUISITES FOR FAULT FINDING

Documentation type

Fault finding procedures (this manual):

– Assisted fault finding (incorporated into the diagnostic tool), paper version (Workshop Repair Manual

or Technical Note) and Dialogys.

Wiring diagrams:

– Visu-Diagram (CD-ROM), paper.

Type of diagnostic tools:

– CLIP

Special tooling required:

Special tooling required

Multimeter.

Elé. 1590 112 track computer bornier

Mot. 1711 PLUGGED RAIL tools

K9K044 X 84 1.0

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Edition 2

DIESEL INJECTION

Fault finding - Introduction

DDCR INJECTION

PROGRAM no.: BE88

VDIAG No.: 44

Fault finding - Introduction 13B

3. REMINDERS

Procedure:

Switch on the ignition in fault finding mode to diagnose the vehicle computers (+ after ignition imposed).

Proceed as follows:

– Renault card on the card holder (keyless vehicle scenario 1, basic, not hands-free and scenario 2, top of the

range, hands-free),

– Press and hold start button (longer than 5 seconds) with start-up conditions not fulfilled,

– Connect the diagnostic tool and perform the required operations.

Note:

The left and right-hand Xenon bulb computers are supplied when the dipped headlights are lit. Fault finding

procedures can only be carried out on them after the ignition has been switched on in fault finding mode (+ after

ignition imposed) and the dipped headlights are on.

Proceed as follows to cut off the + after ignition :

– disconnect the diagnostic tool,

– press the start button twice briefly (less then 3 seconds),

– ensure that the + after ignition feed has been cut off by checking that the computer warning lights on the

instrument panel have gone out.

Faults:

Faults are declared either present or stored (depending on whether they appeared in a certain context and have

disappeared since, or whether they remain present but are not diagnosed within the current context).

The present or stored state of faults should be taken into consideration when the diagnostic tool is used after the

+ after ignition feed (without acting on the system components).

Apply the procedure shown in the Interpreting faults section for a present fault .

For a stored fault , note the faults displayed and apply the instructions section.

If the fault is confirmed when the instructions in the Notes section are applied, the fault is present. Deal with the

fault.

If the fault is not confirmed , check:

– the electrical lines which correspond to the fault,

– the connectors on these lines (corrosion, bent pins, etc.),

– the resistance of the faulty component,

Conformity check

The conformity check is designed to check the states and parameters which do not display any faults on the

diagnostic tool when inconsistent. This phase therefore allows:

– diagnosis of faults that do not have a fault display, and which may correspond to a customer complaint.

– checks that the system is operating correctly and that there is no risk of a fault reappearing after repairs.

This section gives the fault finding procedures for states and parameters and the conditions for checking them.

If a state is not behaving normally or a parameter is outside permitted tolerance values, you should consult the

corresponding fault finding page.

K9K044 X 84 1.0

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DIESEL INJECTION

DDCR INJECTION

PROGRAM no.: BE88

VDIAG No.: 44

Fault finding - Introduction 13B

DIESEL INJECTION

Customer complaints - Fault finding chart

If the diagnostic tool check is correct, but the customer complaint persists, it should be dealt with according to the

customer complaint.

A synopsis of the general procedure to follow is provided on the following page in the form of a flow

chart.

K9K044 X 84 1.0

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DDCR INJECTION

PROGRAM no.: BE88

VDIAG No.: 44

Fault finding - Introduction 13B

4. FAULT FINDING PROCEDURE

Check the battery charge and

condition of the fuses

Print the system diagnostic sheet

(available in CLIP and in the

Workshop Repair Manual or

Technical Note)

Connect CLIP

Dialogue

with

computer?

See CHART 1

yes

Read faults

Faults

present

Conformity check

yes

Deal with faults found

The symptom

persists

Fault

solved

Deal with stored faults

Use the fault

finding charts.

The symptom

persists

Fault

solved

The symptom

persists

Fault

solved

yes

Contact the Techline with the

completed fault finding sheet

K9K044 X 84 1.0

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Edition 2

DIESEL INJECTION

DDCR INJECTION

PROGRAM no.: BE88

VDIAG No.: 44

Fault finding - Introduction 13B

DIESEL INJECTION

5. FAULT FINDING LOG

WARNING!

WARNING

All problems involving a complex system call for thorough diagnostics with the appropriate tools.

The FAULT FINDING LOG, which should be completed during the fault finding procedure,

ensures a record is kept of the procedure carried out. It is an essential item when discussing the

fault with the constructor.

IT IS THEREFORE MANDATORY TO FILL OUT A FAULT FINDING SHEET EACH TIME FAULT FINDING

IS DONE.

You will always be asked for this report:

– When requesting technical assistance from the Techline.

– For certification requests when replacing parts that must be certified.

– Which must be attached to monitored parts for which reimbursement is requested. It is therefore used to

decide whether a reimbursement will be made under warranty and leads to improved analysis of the

removed parts.

6. SAFETY INSTRUCTIONS

All work on components requires obeying safety rules to prevent physical damage or human injury:

– Make sure the battery is properly charged to avoid damaging the computers with a low charge.

– Use the proper tools.

CLEANLINESS INSTRUCTIONS WHICH MUST BE FOLLOWED WHEN WORKING ON THE HIGH-PRESSURE

DIRECT INJECTION SYSTEM

Risks relating to contamination

The system is very sensitive to contamination. The risks engendered by the introduction of pollution are: damage or

destruction to the high-pressure injection system and the engine, seizing or a component no longer being sealed.

All After-Sales operations must be performed under very clean conditions. This means that no impurities (particles a

few microns in size) get into the system during dismantling or into the circuits via the fuel unions.

The cleanliness guidelines must be applied from the filter through to the injectors.

K9K044 X 84 1.0

13B-5

Edition 2

13B-Diesel Injection - Diagnostics.pdf

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