RENAULT SCENIC 2007 J84 / 2.G Anti Lock Braking System Bosch 8.0 ESP Repair Manual

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 09, 0A, 0B, 11, 1238C
38C - 61V2 MR-372-J84-38C050$682_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12ANTI-LOCK BRAKING SYSTEM
SETTINGS
PR001:
PR002:
PR003:
PR004:Front right-hand wheel speed.
Front left-hand wheel speed.
Rear right-hand wheel speed.
Rear left-hand wheel speed.
These parameters specify the speed in mph of each wheel of the vehicle.
PR005: Computer supply.
This parameter shows the + after ignition computer feed voltage in volts.
PR007: Longitudinal acceleration.
This parameter indicates the longitudinal acceleration of the vehicle in ms-2. It should be 0 when the
vehicle is stationary.
PR016: Lateral acceleration programming offset (Vdiag 09, 0A, 0B, 12 and 11).
This parameter gives the correction made by the ESP on the gross value of the lateral acceleration
sensor.
PR020: Vehicle speed at initialisation (Vdiag 0B, 12 and 11).
This parameter shows the vehicle speed sent to the multiplex network when the computer is initialised.
PR030: Tachometric index.
This parameter specifies the tachometric index entered in the computer for the tyres fitted to the vehicle.
PR033: Steering wheel angle.
This parameter gives the steering wheel angle in degrees. This signal is transmitted by the electric
power-assisted steering to the ESP via the multiplex network.
PR034: Yaw angle.
This parameter gives the yaw angle supplied by the dual sensor or combined sensor in ˚/s. It should
be 0 when the vehicle is stationary.
PR036: Transverse acceleration.
This parameter gives the lateral acceleration supplied by the dual sensor or combined sensor in g.
It should be 0 when the vehicle is stationary.
PR038: Vehicle speed.
This parameter specifies the vehicle speed in mph.
PR055: Number of teeth on the target.
This parameter shows the number of teeth on the target.
PR063: Vehicle parameters.
This parameter shows whether the configuration (VP004) corresponds correctly to the vehicle under
diagnosis.
PR064: Automatic ESP reactivation threshold (Vdiag 08, 09, 12 and 0B).
This parameter shows the automatic ESP reactivation threshold in mph (km/h) This parameter should
be 30 mph (50 km/h). If the value differs, use command VP023.
PR065: Yaw angle programming offset (Vdiag 09, 0A, 0B, 12 and 11).
This parameter shows the correction made by the ESP to the raw yaw sensor value.
PR066: Steering wheel angle programming offset (Vdiag 09, 0A, 0B, 12 and 11).
This parameter shows the correction made by the ESP to the raw EPAS steering wheel angle sensor
value.
MR-372-J84-38C050$682_eng.mif

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 09, 0A, 0B, 11, 1238C
38C - 62V2 MR-372-J84-38C050$744_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12ANTI-LOCK BRAKING SYSTEM
STATUSES
CLEARING
Control
*csv: ET017: Brake pedal.
This status gives the position (depressed or released) of the brake pedal
ET023: ESP On/Off button
This status is used to check the ESP On/Off button operation. This status (pressed or released) is
checked by keeping the button pressed.
ET030: Automatic brake light illumination.
This status indicates whether automatic brake lighting is authorised or inhibited during CSV
(understeer control)*. The parameters of this status can be modified using commands VP021 and
VP022 according to the legislation in force in the country concerned.
RZ001: Fault memory.
This command is used for clearing the computer's stored faults.
RZ003: ESP sensor programming (Vdiag 09, 0A, 0B, 12 and 11).
This command resets the ESP sensor programming. Run this command every time work on the
electric power steering required programming of the steering wheel angle or after any operation on
the axle assemblies. Use this command when the combined sensor has been removed or replaced.
AC003:
AC004:
AC005:
AC006:Front left-hand wheel solenoid valves.
Front right-hand wheel solenoid valves.
Rear left-hand wheel solenoid valves.
Rear right-hand wheel solenoid valves.
These commands permit a check on the hydraulics of each wheel.
Raise the vehicle in order to be able to rotate the wheels, and check that they rotate freely.
Keep the brake pedal depressed to prevent the wheel being tested from being turned by hand
(do not brake so firmly that full braking power is reached).
Select and confirm the command for the wheel concerned (e.g. Front left-hand wheel solenoid valve,
etc.)
Turn the wheel concerned by hand; you should see it go through 5 locking/unlocking cycles.
AC013:Test wheel speed sensor feed (Vdiag 0A, 0B, 12 and 11).
This command is used to check that voltage pulses of approximately 12 V are detected by a
multimeter at the sensor connector terminals on the computer side. You must use command AC013
once only.
AC016:Pump motor test.
This command is used to test the pump motor control circuit. Select command AC016 Pump Motor
Test. The motor must run for 5 seconds.
AC187:Brake light on relay.
This command is for testing brake light activation by the ESP when controlling understeer during sharp
deceleration.
MR-372-J84-38C050$744_eng.mif

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 09, 0A, 0B, 11, 1238C
38C - 63V2 MR-372-J84-38C050$744_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12
COMMAND (continued)
SPECIAL COMMANDSAC195:Vehicle speed signal.
This command sends a speed other than 0 mph on the computer's vehicle speed wire output
(Track 33) to users of that signal (xenon bulbs, radio, sunroof).
Note:
This command has no visible effect on the dashboard speedometer needle.
Xenon bulbs: Switch on the dipped headlights and run command AC195. You should see a slight
change in the height of the headlight beam (depending on vehicle speed, the height of the beam is
adjusted to improve visibility).
–Radio: switch on the radio and check that the speed-dependent volume control function is active.
Run command AC195. During the command, you should notice the volume of the sound increase
and then decrease.
–Sunroof: this command has no visible effect on the sunroof. This command changes the activation
threshold of the anti-pinch system (the pressure exerted by the sunroof varies with vehicle speed
due to aerodynamic factors).
AC196:Request to switch on hazard warning lights.
This command sends the UCH a request to switch on the hazard warning lights to test their operation
during emergency braking (depending on UCH configuration).
SC001: Check target teeth.
This command tests the condition of the teeth on each wheel. Select command SC001 Test target
teeth. The test result should show 48 teeth.
SC006: Bleed the hydraulic unit and brake circuits.
Use this command if abnormally long brake pedal travel is noted during a road test with ABS control
(the system must have been bled beforehand by the usual procedure).
Select the SC006 "Bleed hydraulic unit and brake circuit" command and follow the instructions
given by the diagnostic tool.

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 09, 0A, 0B, 11, 1238C
38C - 64V2 MR-372-J84-38C050$806_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12ANTI-LOCK BRAKING SYSTEM
ET017
BRAKE PEDAL
NOTESSpecial notes:
Carry out the checks only if the pressed and released statuses are not consistent with
the pedal position.
STATUS Released Brake pedal depressed.
If the brake lights are working:
–Check the continuity of the connection between track 1 of the brake light switch connector and track 30 of the
computer connector.
If the brake lights are not working:
–Check the brake light lighting relay,
–Check the condition and fitting of the brake light switch and brake lights fuse.
–Remove the brake light switch and check that it is operating correctly:
Continuity between tracks Insulation between tracks
Switch pressed
(Brake pedal released)3 and 4 1 and 2
Switch released
(Brake pedal depressed)1 and 2 3 and 4
–Replace the switch if necessary.
–Check for + after ignition feed on tracks 2 and 4 on the brake light switch connector.
If the brake lights still fail, check/ensure the continuity between track 1 of the switch connector and track 4 of the
relay mounting.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ESPBOSCH_V08_ET017/ESPBOSCH_V09_ET017 /ESPBOSCH_V0A_ET017/
ESPBOSCH_V0B_ET017/ESPBOSCH_V11_ET017/ESPBOSCH_V12_ET017
MR-372-J84-38C050$806_eng.mif

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 09, 0A, 0B, 11, 1238C
38C - 65V2 MR-372-J84-38C050$806_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12
ET017
CONTINUED
Pressed STATUS, Brake pedal released.
Check the condition and fitting of the brake light switch, the brake lights fuse and the conformity of the bulbs.
Remove the brake light switch and check that it is operating correctly:
Continuity between tracks Insulation between tracks
Switch pressed
(Brake pedal released)3 and 4 1 and 2
Switch released
(Brake pedal depressed)1 and 2 3 and 4
Replace the switch if necessary.
Check and if necessary repair the insulation from 12 V on the connection between track 1 of the brake light switch
connector and track 30 of the computer connector.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 09, 0A, 0B, 11, 1238C
38C - 66V2 MR-372-J84-38C050$806_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12
ET023
ESP ON/OFF BUTTON
NOTESSpecial notes:
Carry out the checks only if the "pressed" and "released" statuses are not consistent
with the button position.
STATUS: "Depressed"
Ensure that the ESP start/stop button connector is in good condition and correctly connected. Repair if necessary.
Check there is no continuity between switch tracks A2 and B1 in the released position. If there is continuity,
replace the switch.
Check the continuity and insulation against the earth of the connection between:
Switch connector track B1 Track 31 computer connector
STATUS: "Released"
Ensure that the ESP start/stop button connector is in good condition and correctly connected. Repair if necessary.
Check the continuity between button tracks A2 and B1 in the pressed position. If there is no continuity, replace
the switch.
Check for earth on Track A2 of the button connector.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ESPBOSCH_V08_ET023/ESPBOSCH_V09_ET023 /ESPBOSCH_V0A_ET023/
ESPBOSCH_V0B_ET023/ESPBOSCH_V11_ET023/ESPBOSCH_V12_ET023

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 09, 0A, 0B, 11, 1238C
38C - 67V2 MR-372-J84-38C050$868_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12ANTI-LOCK BRAKING SYSTEM
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
FAULTS DETECTED ON BRAKING WITH ABS/BRAKING REGULATION
LOCKING OF ONE OR MORE WHEELS ALP2
PULLINGALP3
DRIFTALP4
UNEXPECTED ABS OPERATION AT LOW SPEEDS AND SLIGHT PEDAL
PRESSUREALP5
UNEXPECTED ABS OPERATION ON A POOR ROAD SURFACE ALP6
UNEXPECTED ABS OPERATION WHEN USING SPECIAL EQUIPMENT
(RADIO TELEPHONE, CB, etc.)ALP7
LENGTHENING OF BRAKE PEDAL TRAVEL FOLLOWING ABS
(WITH PEDAL RECEDING WHEN ENTERING ABS)ALP8
SPONGY PEDAL ALP9
BRAKE PEDAL VIBRATION ALP10
NOISES FROM THE PUMP, PIPES OR HYDRAULIC UNIT ALP11
MR-372-J84-38C050$868_eng.mif

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 09, 0A, 0B, 11, 1238C
38C - 68V2 MR-372-J84-38C050$868_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
OTHER CASES
NO DIALOGUE WITH THE ABS COMPUTER ALP1
"ABS COMPUTER NOT DETECTED" DURING MULTIPLEX NETWORK TEST
ON CLIPALP12
FAULTY BRAKE LIGHTS ALP13
ERRATIC TRIGGERING OF ESP ALP14
ESP WARNING LIGHT COMES ON WITH THE "ASR DISCONNECTED"
MESSAGE WHEN THE CURRENT IS SWITCHED ON WITHOUT PRESSING THE
ESP DISCONNECTION BUTTONALP15
INTERMITTENT ILLUMINATION OF BRAKE, ABS, SERVICE AND STOP
WARNING LIGHTS AND THE MESSAGE "BRAKE FAILURE" ON THE
INSTRUMENT PANEL WITH NO FAULT CODES IN THE COMPUTERALP16

38C-69
MR-372-J84-38C050$930_eng.mif
V2
38C
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart
ALP 1 No dialogue with the ABS computer
NOTESSpecial note:
To run fault finding on the vehicle's computers, switch on the ignition in fault finding
mode (forced + after ignition feed), i.e. proceed as follows:
–With the vehicle card in the card reader, press the Start button for more than
5 seconds without starting conditions being met.
Check that the CLIP diagnostic tool is equipped with the latest update available.
Try to establish dialogue with a computer on another vehicle to make sure that the diagnostic tool is not faulty.
If the tool is not at fault, and dialogue cannot be established with any other computer on the same vehicle, the
cause could be a faulty computer interfering on the multiplex network. Check the battery voltage and carry out the
operations necessary to obtain the correct voltage (9.5 V < battery voltage < 17.5 V).
Carry out a fault finding procedure on the multiplex network using the diagnostic tool.
Check the presence and the condition of the ABS fuses on the passenger compartment fuse board and in the
engine fuse box.
Check that the computer connector is properly connected and check the condition of its connections.
Check the ABS earths (good condition, not corroded, earth screw on top of the ABS unit tight).
Check that the supply to the computer is correct:
–Earth on tracks 1 and 4 of the 46-track connector.
–+ before ignition feed on tracks 2 and 3 of the 46-track connector.
–+ after ignition feed on track 18 of the 46-track connector.
Check that the power supply to the diagnostic socket is correct:
–+ before ignition feed on track 16.
–+ after ignition feed on track 1.
–Earth on tracks 4 and 5.
If dialogue has still not been established after these checks, contact the Techline.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ESPBOSCH_V08_ALP01 /ESPBOSCH_V09_ALP01/ESPBOSCH_V0A_ALP01/
ESPBOSCH_V0B_ALP01 /ESPBOSCH_V11_ALP01/ESPBOSCH_V12_ALP01BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12
MR-372-J84-38C050$930_eng.mif

38C-70
MR-372-J84-38C050$930_eng.mif
V2
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart38C
ALP 2 Locking of one or more wheels
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
Reminder: wheel lock on a vehicle equipped with ABS, or tyre squealing perceived by the customer as locking,
may be part of the normal operation of the system and should not be automatically considered as faults:
–Braking with ABS on very poor roads (significant squealing).
However, if the wheels are actually locking, raise the vehicle in order to be able to turn the wheels and check:
–Possible inversion when connecting the speed sensors.
Using parameters PR001, PR002, PR003 and PR004, rotate the wheels slowly and check the consistency of the
results obtained.
If the value measured is zero, rotate the other wheels to confirm an electrical inversion of the sensors and repair
the wiring harness.
–Possible inversion of pipes on the hydraulic unit.
Use commands AC003 Front left-hand wheel solenoid valves, AC004 Front right-hand wheel solenoid
valves, AC005 Rear left-hand wheel solenoid valves and AC006 Rear right-hand wheel solenoid valves
while depressing the brake pedal and check for the occurrence of 5 locking/unlocking cycles on the wheel
concerned (see Dealing with commands). If the 5 cycles do not occur on the wheel tested (wheel remains
locked), check whether they occur on another wheel to confirm transposed pipes.
If the 5 cycles are not detected on a wheel and the pipes have not been subject to inversion, replace the hydraulic
unit.
Check that the sensor casing is secured when rotating.
Check the quality of the mounting of the wheel speed sensor (correct clipping without excessive play).
Check the conformity of the targets using special command SC001 "Check target teeth": condition, number of
teeth = 48.
If the fault is still present after these checks, contact the Techline.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ESPBOSCH_V08_ALP02 /ESPBOSCH_V09_ALP02/ESPBOSCH_V0A_ALP02/
ESPBOSCH_V0B_ALP02 /ESPBOSCH_V11_ALP02/ESPBOSCH_V12_ALP02BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12