2013 RENAULT KANGOO Air Bags AC4 And Pretensioners Workshop Manual

8Electrical equipment
V1 MR-376-X76-88C000$TOC.mif
V1
88C
"The repair procedures given by the manufacturer in this document are based on the
technical specifications current when it was prepared.
The procedures may be modified as a result of changes introduced by the
manufacturer in the production of the various component units and accessories from
which his vehicles are constructed."
V1
All rights reserved by Renault s.a.s.
Edition Anglaise
Copying or translating, in part or in full, of this document or use of the service part
reference numbering system is forbidden without the prior written authority of
Renault s.a.s.
© Renault s.a.s. 2013
AIRBAGS AND PRETENSIONERS
2nd generation (AC4 phase II)
Fault finding – Introduction 88C - 2
Fault finding – Operating diagram 88C - 10
Fault finding – Configuration and programming 88C - 12
Fault finding – Replacement of components 88C - 13
Fault finding – Fault summary table 88C - 14
Fault finding – Interpretation of faults 88C - 15
Fault finding – Conformity check 88C - 34
Fault finding – Status summary table 88C - 35
Fault finding – Parameter summary table 88C - 36
Fault finding – Command summary table 88C - 37
Fault finding – Customer complaints 88C - 38
Fault finding – Fault Finding Chart 88C - 39

88C-2V1 MR-376-X76-88C000$010.mif
88C
2nd generation
(AC4 phase II)
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding method applicable to all computers with the following specifications:
2. CONDITIONS FOR APPLICATION OF THE TESTS DEFINED IN THIS FAULT FINDING
The tests defined in this fault finding should only be applied to vehicles not fitted with side airbags but which are
fitted with the 2nd generation of airbag computers.
These new computers can be identified by the heading AC4 Ph 2 on the fault finding tools.
The tests defined in this fault finding must only be carried out if the fault is present on the vehicle at the time the test
is carried out.
Only the computer fault leads to replacement of the computer, whether the fault is present or simply stored.
If the fault is not present but simply stored, applying the checks recommended in the fault finding will not allow the
reason why this fault was stored to be located. In this case only, the wiring and the faulty component connections
should be checked (it is possible to access the wiring concerned in fault finding mode to try to display the change
from stored fault to present fault).
3. PREREQUISITES FOR FAULT FINDING
Documentation type:
Fault finding procedure (this manual):
• Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
•Visu - Schéma
Type of diagnostic tools:
•CLIP
*VLL — Very Long LifeVehicle: KANGOO VLL*
Function concerned: Airbags and seat belt
pretensionersComputer name: AC4 phase II
AIRBAGS AND PRETENSIONERS
Fault finding – Introduction

88C-3V1 MR-376-X76-88C000$010.mif
AIRBAGS AND PRETENSIONERS
Fault finding – Introduction88C
2nd generation
(AC4 phase II)
Special tooling required:
4. REMINDERS
During operations on the airbag/seat belt pretensioner systems it is vital that you lock the computer using the
diagnostic tool to prevent any risk of accidental triggering (all the trigger lines will be inhibited). The locked mode is
indicated when the instrument panel warning light comes on. Without the diagnostic tool, switch off the ignition and
remove the supply fuse from the system, then wait at least 2 seconds for the power reserve capacity to discharge.
Never measure the airbag or pretensioner trigger lines with any device other than the XRBAG or by the "Airbag and
pretensioner wiring harness check" function on the CLIP and NXR tools.
Before using a dummy ignition module, check that its resistance is between 1.8 and 2.5 ohms.
Ensure during the operation that the supply voltage to the computer does not drop below 10 volts.Special tooling required
Diagnostic tools (except XR25)
Adapter and bornier kit to be used for the "Airbag and
pretensioner wiring harness check" function of the CLIP and
NXR tools or the XRBAG unit.
Multimeter

88C-4V1 MR-376-X76-88C000$010.mif
AIRBAGS AND PRETENSIONERS
Fault finding – Introduction88C
2nd generation
(AC4 phase II)
HOW TO START THE SESSION ASDE AIRBAG AC4 Kangoo VLL:

88C-5V1 MR-376-X76-88C000$010.mif
AIRBAGS AND PRETENSIONERS
Fault finding – Introduction88C
2nd generation
(AC4 phase II)
5. FAULT FINDING PROCEDURE
Check the battery charge
and the condition of the fuses
Print the system fault finding log
(available on CLIP)
Connect CLIP
See ALP no. 1
Read the faults
Deal with present faults
Deal with stored faults
Conformity check
Use fault finding charts (ALPs)
Dialogue with
computer?
Faults
present
The cause is
still present
The cause is
still presentThe cause is
still present
Contact the Techline with the
completed fault finding log
no
nono
no no
yes
yes
yes
Fault
solvedFault solved Fault solved

88C-6V1 MR-376-X76-88C000$010.mif
AIRBAGS AND PRETENSIONERS
Fault finding – Introduction88C
2nd generation
(AC4 phase II)
5. FAULT FINDING PROCEDURE (continued)
5.1 Wiring check
Fault finding problems
Disconnecting the connectors and/or manipulating the wiring may temporarily clear the cause of a fault.
Visual inspection
Look for damage under the bonnet and in the passenger compartment.
Carefully check the protectors, insulation, and routing of the wiring, as well as the mountings.
Physical inspection
When manipulating the wiring, either use the diagnostic tool to detect a change in status, from "stored" to
"present", or the multimeter to view the status changes.
Make sure that the connectors are firmly secured.
Apply light pressure to the connectors.
Twist the wiring harness.
Checking earth insulation
This check is carried out by measuring the voltage (multimeter in voltmeter mode) between the suspect connection
and the 12 V or 5V. The correct measured value is 0V.
Checking insulation against + 12 V or + 5 V
This check is carried out by measuring the voltage (multimeter in voltmeter mode) between the suspect connection
and the earth. In the first instance, the earth may be taken on the chassis. The correct measured value is 0V.
Continuity check
A continuity check is carried out by measuring the resistance (multimeter in ohmmeter mode), with the connectors
disconnected at both ends. The expected result is in the range: 0  < X < 2  for each connection. The line must be
fully checked, and the intermediate connections are only included in the method if this saves time during the fault
finding procedure. The continuity check on the multiplex lines must be carried out on both wires. The measured
value should be between: 0  < X < 2 .
Power supply check
This check can be carried out using a test light (21 W or 5 W depending on the maximum permissible load).

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AIRBAGS AND PRETENSIONERS
Fault finding – Introduction88C
2nd generation
(AC4 phase II)
5.2 Connector check
Visual inspection of the connection:
– Check that the connector is connected correctly and that the male and female parts of the connection are correctly
coupled.
Visual inspection of the area around the connection:
– Check the condition of the mounting (pin, strap, adhesive tape, etc.) if the connectors are attached to the vehicle.
– Check that there is no damage to the wiring trim (sheath, foam, adhesive tape, etc.) near the wiring.
– Check that there is no damage to the electrical wires at the connector outputs, in particular on the insulating material
(wear, cuts, burns, etc.).
Disconnect the connector to continue the checks.
Visual inspection of the plastic casing:
– Check that there is no mechanical damage (casing crushed, cracked, broken, etc.), in particular to the fragile
components (lever, lock, openings, etc.).
– Check that there is no heat damage (casing melted, darker, deformed, etc.).
– Check that there are no stains (grease, mud, liquid, etc.).Note:
Carry out each requested check visually.
Do not remove a connector if it is not required.
Note:
Repeated connections and disconnections alter the functionality of the connectors and increase the risk of poor
electrical contact. Limit the number of connections/disconnections as much as possible.
Note:
The check is carried out on the 2 parts of the connection. There may be two types of connection:
– Connector/Connector.
– Connector/Device.

88C-8V1 MR-376-X76-88C000$010.mif
AIRBAGS AND PRETENSIONERS
Fault finding – Introduction88C
2nd generation
(AC4 phase II)
• Visual inspection of the metal contacts:
(The female contact is called CLIP. The male contact is called TAB.)
– Check that there are no bent contacts (the contact is not inserted correctly and can come out of the back of the
connector). The contact comes out of the connector when the wire is pulled gently.
– Check that there is no damage (folded tabs, clips open too wide, blackened or melted contact, etc.).
– Check that there is no oxidation on the metal contacts.
• Visual inspection of the sealing:
(Only for watertight connectors)
Check for the seal on the connection (between the 2 parts of the connection).
– Check the seal at the back of the connectors:
– For unit joints (1 for each wire), check that the unit joints are present on each electrical wire and that they
are correctly positioned in the opening (level with the housing). Check that plugs are present on openings
which are not used.
– For a grommet seal (one seal which covers the entire internal surface of the connector), check that the seal
is present.
– For gel seals, check for gel in all of the openings without removing the excess or any protruding sections (it
does not matter if there is gel on the contacts).
– For hotmelt sealing (heat-shrink sheath with glue), check that the sheath has contracted correctly on the
rear of the connectors and electrical wires, and that the hardened glue comes out of the side of the wire.
– Check that there is no damage to any of the seals (cuts, burns, significant deformation, etc.).
If a fault is detected, consult Technical Note 6015A, Repairing electrical wiring.