2013 RENAULT KANGOO pressure

38C-2V1 MR-376-X76-38C000$010.mif
38C
ABS BOSCH 8.1
Vdiag No.: 18
1. SCOPE OF THIS DOCUMENT
This document presents the fault finding method applicable to all computers with the following specifications:
2. PREREQUISITES FOR FAULT FINDING
Documentation type
Fault finding procedures (this document):
– Assisted fault finding (integrated into the diagnostic tool), Dialogys.
Wiring Diagrams:
– Visu-Schéma.
Type of diagnostic tools
–CLIP
Special tooling required
3. SAFETY INSTRUCTIONS
Safety rules must be observed during any work on a component to prevent any material damage or personal injury:
– check the battery voltage to avoid incorrect operation of computer functions,
– it is strictly forbidden to carry out a road test with the diagnostic tool communicating with the computer
because the ABS (anti-lock braking system) and EBD (Electronic Braking Distribution) functions are
deactivated. Braking pressure is identical on both axles of the vehicle (risk of a spin under heavy braking). Vehicle(s): KANGOO VLL*Computer name: ABS BOSCH 8.1
Function concerned: ABSVDIAG No.: 18
Special tooling required:
Diagnostic tool
Multimeter
ABS8.1X76_V18_PRELI
ANTI-LOCK BRAKING SYSTEM
Fault finding – Introduction
*VLL: very long life

38C-3V1 MR-376-X76-38C000$020.mif
38C
ABS BOSCH 8.1
Vdiag No.: 18
The anti-lock braking system consists of:
– four wheel speed sensors (1),
– a brake servo assembly (2),
– a brake pedal sensor (3),
– a pump assembly (4) consisting of:
●a hydraulic pump,
●a pressure modulation unit (eight solenoid valves),
●a computer,
●a pressure sensor.
1
4
23
11
1
ANTI-LOCK BRAKING SYSTEM
Fault finding – List and location of components

38C-44V1 MR-376-X76-38C000$160.mif
38C
ABS BOSCH 8.1
Vdiag No.: 18
NOTESOnly consult these customer complaints after a complete check with the diagnostic
tool.
FAULTS DETECTED WHEN BRAKING WITH ABS CONTROL
Locking of one or more wheels ALP2
Pull ALP3
Drift ALP4
Unexpected ABS operation at low speed and with slight pedal pressure ALP5
Unexpected ABS system intervention on a poor road surface ALP6
Unexpected ABS operation when using special equipment (car phone, CB.) ALP7
Extension of brake pedal travel following a regulation phase (with an irregular
pedal when entering regulation).ALP8
Spongy pedal ALP9
Brake pedal vibration ALP10
Noise from the pump, pipes or hydraulic unit ALP11
OTHER CASES
No dialogue with the ABS computer ALP1
ANTI-LOCK BRAKING SYSTEM
Fault finding – Customer complaints

38C-49
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$170.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault Finding Chart38C
ABS BOSCH 8.1
Vdiag No.: 18
ALP3 Pull
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
Disconnect one wheel speed sensor.
Start the engine and ensure that only the ABS fault warning light comes on. Do not drive the vehicle if the brake
fault warning light is also illuminated because the "braking compensator" function is no longer guaranteed.
Carry out a road test with the ABS thus out of order.
Is the fault still present under these conditions?
Raise the vehicle so that you can rotate the wheels and check:
– whether the speed sensors have been incorrectly
connected,
– whether the pipes on the hydraulic unit have been inverted.
For these two tests, consult and apply the procedures defined
in ALP2 Locking of one or several wheels.
Check the condition and conformity of the ABS targets.
If the fault is still present, contact the techline.If the brake pedal travel is relatively long,
bleed the brake circuit.
If the travel is normal, check the tyre
pressures, the front axle, or for any leaks in
the circuit.
NOYES
ABS8.1X76_V18_ALP3

38C-50
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$170.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault Finding Chart38C
ABS BOSCH 8.1
Vdiag No.: 18
ALP4 Drift
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
Disconnect one wheel speed sensor.
Start the engine and ensure that only the ABS fault warning light comes on. Do not drive the vehicle if the brake
fault warning light is also illuminated because the "braking compensator" function is no longer guaranteed.
Carry out a road test with the ABS thus out of order.
Is the fault still present under these conditions?
Normal behaviour linked to the system operation during
the regulation phase, mainly on surfaces with uneven
grip or which are poorly laid.Road holding fault not related to the ABS.
Check the condition of the brake linings and that
they are to specification and check the tyre
pressures, the front axle, etc.
NOYES
ABS8.1X76_V18_ALP4

38C-51
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$170.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault Finding Chart38C
ABS BOSCH 8.1
Vdiag No.: 18
ALP5Unexpected ABS operation at low speed and slight pedal
pressure
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool. Warning: ABS control is sensitive to poor traction (icy roads, wet cobblestones,
etc.).
It is possible to feel brake pedal vibrations which are associated with the reaction of the system in particular
circumstances, such as:
– crossing rumble strips,
– tight cornering with lifting of the inside rear wheel.
These vibrations may be linked to simple brake limiter activation, when the pressure on the rear axle is limited.
If the fault is different, check the speed sensor connectors (micro-breaks).
ABS8.1X76_V18_ALP5

38C-56
AFTER REPAIRClear the computer memory using command RZ001 Fault memory.
Carry out a road test followed by another check with the diagnostic tool.
V1 MR-376-X76-38C000$170.mif
ANTI-LOCK BRAKING SYSTEM
Fault finding – Fault Finding Chart38C
ABS BOSCH 8.1
Vdiag No.: 18
ALP10 Brake pedal vibration
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
Normal reaction of the brake pedal during an ABS regulation phase or pressure limitation on the rear axle (brake
limiter function).
ABS8.1X76_V18_ALP10