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

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 09, 0A, 0B, 11, 1238C
38C - 3V2 MR-372-J84-38C050$062_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12
Faults
Faults are declared as either present or stored (depending on whether they appeared in a certain context and have
disappeared since, or whether they remain present but have not been diagnosed within the current context).
The present or stored status of faults should be taken into consideration when the diagnostic tool is switched on
after the + after ignition feed (without any system components being active).
For a present fault, apply the procedure described in the Interpretation of faults section.
For a stored fault, note the faults displayed and apply the instructions in the Notes 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 for these lines (for oxidation, bent pins, etc.),
–the resistance of the component detected as faulty,
–the condition of the wires (melted or split insulation, wear).
Conformity check
The aim of the conformity check is to check data that does not produce a fault on the diagnostic tool because the
data is inconsistent. Therefore, this stage is used to:
–carry out fault finding on faults that do not have a fault display, and which may correspond to a customer
complaint.
–check that the system is operating correctly and that there is no risk of a fault recurring after repairs.
This section gives the fault finding procedures for statuses and parameters and the conditions for checking them.
If a status is not behaving normally or a parameter is outside the permitted tolerance values, consult the
corresponding fault finding page.
Customer complaints - Fault finding chart
If the test with the diagnostic tool is OK but the customer complaint is still present, the fault should be processed by
customer complaint.
A synopsis of the general procedure to follow is provided on the following page in
the form of a flow chart.

ANTI-LOCK BRAKING SYSTEM
BOSCH 8.0 ESP Vdiag No.: 08, 0938C
38C - 17V2 MR-372-J84-38C050$434_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09
DF006
CONTINUED
Vdiag No.: 08 and 09
1.DEF
NOTESNone
Replace the front left-hand wheel speed sensor.
2.DEF
NOTESNone
Visually inspect the condition of the target and sensor (for dirt, metallic contamination, bearing grease, etc.), and
clean using compressed air if necessary.
If there is a lot of grease on the target, contact the Techline.
Check the quality of the mounting of the wheel speed sensor (correct clipping without excessive play).
Check the sensor/target air gap over one wheel revolution: 0.1 mm < front wheel air gap < 1.2 mm.
Check the conformity of the target (condition, number of teeth = 48) using the specific command SC001 Check
target teeth.
If the checks are correct:
–the computer fault memory has been cleared,
–exit fault finding mode, switch off the ignition and carry out a road test.
Replace the instrumented bearing if the fault recurs.
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.: 0A, 0B, 11, 1238C
38C - 19V2 MR-372-J84-38C050$434_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 0A, 0B, 11,
12
DF006
CONTINUED
Vdiag: 0A, 0B, 11, 12
1.DEF
NOTESNone
Replace the front left-hand wheel speed sensor.
2.DEF
NOTESNone
Visually inspect the condition of the target and sensor (for dirt, metallic contamination, bearing grease, etc.), and
clean using compressed air if necessary.
If there is a lot of grease on the target, contact the Techline.
Check the quality of the mounting of the wheel speed sensor (correct clipping without excessive play).
Check the sensor/target air gap over one wheel revolution: 0.1 mm < front wheel air gap < 1.2 mm.
Check the conformity of the target (condition, number of teeth = 48) using the specific command SC001 Check
target teeth.
If the checks are correct:
–the computer fault memory has been cleared,
–exit fault finding mode, switch off the ignition and carry out a road test.
Replace the instrumented bearing if the fault recurs.
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, 0938C
38C - 29V2 MR-372-J84-38C050$434_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09
DF026
CONTINUED
Vdiag No.: 08 and 09
1.DEF
NOTESNone
Replace the front right-hand wheel speed sensor.
2.DEF
NOTESNone
Visually inspect the condition of the target and sensor (for dirt, metallic contamination, bearing grease, etc.),
and clean using compressed air if necessary.
If there is a lot of grease on the target, contact the Techline.
Check the quality of the mounting of the wheel speed sensor (correct clipping without excessive play).
Check the sensor/target air gap over one wheel revolution: 0.1 mm < front wheel air gap < 1.2 mm.
Check the conformity of the target (condition, number of teeth = 48) using the specific command SC001 Check
target teeth.
If the checks are correct:
–the computer fault memory has been cleared,
–exit fault finding mode, switch off the ignition and carry out a road test.
Replace the instrumented bearing if the fault recurs.
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.: 0A, 0B, 11, 1238C
38C - 31V2 MR-372-J84-38C050$434_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 0A, 0B, 11,
12
DF026
CONTINUED
Vdiag: 0A, 0B, 11, 12
1.DEF
NOTESNone
Replace the front right-hand wheel speed sensor.
2.DEF
NOTESNone
Visually inspect the condition of the target and sensor (for dirt, metallic contamination, bearing grease, etc.), and
clean using compressed air if necessary.
If there is a lot of grease on the target, contact the Techline.
Check the quality of the mounting of the wheel speed sensor (correct clipping without excessive play).
Check the sensor/target air gap over one wheel revolution: 0.1 mm < front wheel air gap < 1.2 mm.
Check the conformity of the target (condition, number of teeth = 48) using the specific command SC001 Check
target teeth.
If the checks are correct:
–the computer fault memory has been cleared,
–exit fault finding mode, switch off the ignition and carry out a road test.
Replace the instrumented bearing if the fault recurs.
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 - 51V2 MR-372-J84-38C050$496_eng.mif
BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12
DF189
PRESENT
COMBINED SENSOR CIRCUIT
NOTESNone
Measure the voltage across tracks 3 and 6 of the combined sensor connector with + after ignition feed
switched on.
If the voltage is not approximately the same as + after ignition feed, contact the Techline.
Check the connection and condition of the combined sensor and computer connectors.
Visually inspect the sensor wiring.
Check and ensure continuity and the insulation of the connections between:
Sensor connector track 1 Track 18 computer connector
Sensor connector track 2 Track 37 computer connector
Sensor connector track 3Passenger compartment fuse box
Sensor connector track 4 Track 16 computer connector
Sensor connector track 5 Track 20 computer connector
Sensor connector track 6 Track 15 computer connector
Also check the insulation between these connections.
If the results of the checks are correct, reconnect the computer and the combined sensor.
Clear the computer fault memory. Exit fault finding mode and switch off the ignition.
Switch the ignition on and replace the sensor if the fault recurs.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ESPBOSCH_V08_DF189P/ESPBOSCH_V09_DF189P/ESPBOSCH_V0A_DF189P/
ESPBOSCH_V0B_DF189P/ESPBOSCH_V11_DF189P/ESPBOSCH_V12_DF189P

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

38C-79
MR-372-J84-38C050$930_eng.mif
V2
ANTI-LOCK BRAKING SYSTEM
Diagnostic - Fault finding chart38C
ALP 11 Noise from the pump, pipes or hydraulic unit
NOTESOnly consult this customer complaint after a complete check with the diagnostic tool.
–Vibration of the unit: check the presence and the condition of the unit bracket insulating rubber mounting
bushes.
–Vibration of pipes: check that all the pipes are securely clipped in their retaining clips and that there is no
contact between pipes or between pipes and bodywork.
To determine where the noise is coming from, use the front left-hand wheel solenoid valves, front right-hand wheel
solenoid valves, rear left-hand wheel solenoid valves and rear right-hand wheel solenoid valves control
commands while depressing the brake pedal.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ESPBOSCH_V08_ALP11/ESPBOSCH_V09_ALP11/ESPBOSCH_V0A_ALP11/
ESPBOSCH_V0B_ALP11/ESPBOSCH_V11_ALP11/ESPBOSCH_V12_ALP11BOSCH 8.0 ESP
Vdiag No.: 08, 09, 0A,
0B, 11, 12