2007 RENAULT SCENIC Anti Lock Braking System Bosch 8.0 ABS Workshop Manual

ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
38C
38C - 25V2 MR-372-J84-38C000$396_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0E, 0F
DF026
PRESENT
OR
STOREDRIGHT-HAND FRONT WHEEL SPEED SENSOR CIRCUIT
CO.0 : Open circuit or short circuit to earth
1.DEF : Magnetic/mechanical target fault
2.DEF : Open circuit or short circuit
Vdiag No.: 0E, 0F
NOTESNone
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present following a road test at a speed of > 36 mph (60 km/h).
CO.0
2.DEF
NOTESSpecial notes:
You must use command AC013 once only.
Check the connection and the condition of the sensor connectors.
Disconnect the sensor, run command AC013 Test wheel speed sensor supply and check that voltage pulses
of about 12 V are detected by a multimeter at the sensor connector terminals on the computer side.
Have you found voltage pulses?
YES
The wiring between the computer and the sensor, as well the supply via the computer,
is OK. Front right-hand wheel speed sensor fault - replace the sensor.
Check the connection and the condition of the computer connectors. Repair if necessary.
Check and ensure the continuity of the following connections:
Sensor connector one of the
2 tracksTrack 9 computer connector
Sensor connector the other track Track 10 computer connector
Also check the insulation between these two connections.
If all the checks are in order, contact Techline.
NO
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0E_DF026/ ABS8.0_V0F_DF026ABS 8.0X84 4.0

ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
38C
38C - 26V2 MR-372-J84-38C000$396_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0E, 0F
DF026
CONTINUED
Vdiag No.: 0E, 0F
1.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.
ABS 8.0X84 4.0

ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
38C
38C - 27V2 MR-372-J84-38C000$396_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D
DF027
PRESENT
OR
STOREDRIGHT-HAND REAR WHEEL SPEED SENSOR CIRCUIT
CO.0 : Open circuit or short circuit to earth
1.DEF : Magnetic/mechanical target fault
Vdiag No.: 0C, 0D
NOTESSpecial notes:
The wheel speed sensors are fed with + 12 V APC but this feed cannot be measured
on Vdiag 0C and 0D (feed cut off when the sensor is faulty).
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present following a road test at a speed of > 36 mph (60 km/h).
CO.0
NOTESNone
Check the connection and the condition of the sensor connectors.
Swap the two rear wheel speed sensors over.
Clear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
If the fault initially declared DF027 "Rear left-hand wheel speed sensor circuit" becomes DF007 "Rear
right-hand wheel speed sensor circuit", replace the wheel speed sensor.
If the fault remains on the same side, the wiring between the computer and the sensor is faulty.
Check the connection and the condition of the computer connectors. Repair if necessary.
Check the connections (Track 33 and 34) at the R2 black 52-track intermediate connection beneath the front
left-hand seat. Repair if necessary.
Check and ensure the continuity of the following connections:
Sensor connector one of the 2 tracks Track 8 computer connector
Sensor connector the other track Track 19 computer connector
Also check the insulation between these two connections.
If the connections are faulty, carry out the following checks:
Check the insulation, continuity and absence of interference resistance between:
Computer connector track 8 Track 34 on the intermediate connector
Computer connector track 19 Track 33 on the intermediate connector
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_DF027 /ABS8.0_V0D_DF027ABS 8.0X84 4.0

ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
38C
38C - 28V2 MR-372-J84-38C000$396_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D
DF027
CONTINUED
Also check the insulation between these two connections.
Repair or replace the wiring if necessary.
Check the insulation, continuity and absence of interference resistance between:
Sensor connector one of the 2 tracks Track 33 on the intermediate connector
Sensor connector the other track Track 34 on the intermediate connector
Also check the insulation between these two connections. Repair or replace the wiring if necessary.
Vdiag No.: 0C, 0D
1.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 through one wheel revolution: 0.1 mm < Rear 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 rear right-hand "disc-hub-bearing" assembly (see MR364 or MR370 Mechanical, 33A, Rear axle
components, Bearing: Removal - Refitting) if the fault reappears.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS 8.0X84 4.0

ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
38C
38C - 29V2 MR-372-J84-38C000$396_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0E, 0F
DF027
PRESENT
OR
STOREDRIGHT-HAND REAR WHEEL SPEED SENSOR CIRCUIT
CO.0 : Open circuit or short circuit to earth
1.DEF : Magnetic/mechanical target fault
2.DEF : Open circuit or short circuit
Vdiag No.: 0E, 0F
NOTESNone
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present following a road test at a speed of > 36 mph (60 km/h).
CO.0
2.DEF
NOTESSpecial notes:
You must use command AC013 once only.
Check the connection and the condition of the sensor connectors.
Disconnect the sensor, use command AC013 "Test wheel speed sensor supply" and check that pulses of
voltage of about 12 V are detected by a multimeter at the sensor connector terminals on the computer side.
Have you found voltage pulses?
YES
The wiring between the computer and the sensor, as well the supply via the computer,
is OK. Rear right-hand wheel speed sensor fault - replace the sensor.
Check the connection and the condition of the computer connectors. Repair if necessary.
Check the connections (Track 33 and 34) at the R2 black 52-track intermediate
connection beneath the front left-hand seat. Repair if necessary.
Check and ensure the continuity of the following connections:
Sensor connector one of the
2 tracksTrack 8 computer connector
Sensor connector the other track Track 19 computer connector
NO
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0E_DF027/ ABS8.0_V0F_DF027ABS 8.0X84 4.0

ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
38C
38C - 30V2 MR-372-J84-38C000$396_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0E, 0F
DF027
CONTINUED
Vdiag No.: 0E, 0F
Also check the insulation between these two connections.
If the connections are faulty, carry out the following checks:
Check the insulation, continuity and absence of interference resistance between:
Computer connector track 8 Track 34 on the intermediate
connector
Computer connector track 19 Track 33 on the intermediate
connector
Also check the insulation between these two connections.
Check the insulation, continuity and absence of interference resistance between:
Sensor connector one of the
2 tracksTrack 33 on the intermediate
connector
Sensor connector the other track Track 34 on the intermediate
connector
Also check the insulation between these two connections.
If all the checks are in order, contact Techline.
1.DEFNOTESNone
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 that the wheel speed sensor mounting is in good condition.
Check the sensor/target air gap through one wheel revolution: 0.1 mm < Rear 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 rear right-hand "disc-hub-bearing" assembly (see MR364 or MR370 Mechanical, 33A, Rear axle
components, Bearing: Removal - Refitting) if the fault reappears.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS 8.0X84 4.0

ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
38C
38C - 31V2 MR-372-J84-38C000$396_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0F
DF055
PRESENT
VEHICLE PARAMETER PROGRAMMING
1.DEF : No vehicle parameter programming
2.DEF : Programming invalid
NOTESSpecial notes:
No programming for PR063 Vehicle parameters.
ABS warning light flashing at 8 Hz outside fault finding conditions.
Read PR063 Vehicle parameters, use command VP004 Vehicle parameters to define the appropriate vehicle
type variant.
It is essential to select the parameters that correspond to the vehicle undergoing fault finding.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0F_DF055ABS 8.0X84 4.0

ANTI-LOCK BRAKING SYSTEM
Fault finding - Interpretation of faults
38C
38C - 32V2 MR-372-J84-38C000$396_eng.mif
BOSCH ABS 8.0
Vdiag No.: 0C, 0D, 0E, 0F
DF063
PRESENT
OR
STOREDCONSISTENT WHEEL SPEEDS
CC.1 : Short circuit to + 12 V
1.DEF : Interference
NOTESSpecial notes:
This fault indicates that the wheel speeds are inconsistent with each other. The
computer does not know how to determine which one is faulty.
Priorities when dealing with a number of faults:
Deal with faults DF006, DF007, DF026 and DF027 first, even if they are stored.
Conditions for applying the fault finding procedure to stored faults:
The fault is declared present after a road test at a speed of over 36 mph (60 km/h) on
a winding road.
Check the condition of the axles (impacts, damage, etc.) and the conformity and good condition of the tyres.
Ensure that the braking system is in good condition (condition of the linings, tightness, grip, bleeding, bearing play,
lubricant on the targets, etc.).
Check the quality of the mounting of the wheel speed sensors (correct clipping without excessive play).
Check the sensor/target air gap over one wheel revolution: 0.1 mm < 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.
Repair if necessary.
Carry out a visual check on the connection and condition of the sensor and computer connectors
Check the connection and condition of the connections (tracks 31, 32, 33 and 34) of the R2 black 52-track
intermediate connection under the front left seat.
Repair if necessary.
If all the checks are correct, clear the computer's fault memory.
Exit the fault finding procedure and carry out a road test.
If the fault is still present, contact the Techline.
AFTER REPAIRClear the computer fault memory.
Carry out a road test followed by another check with the diagnostic tool.
ABS8.0_V0C_DF063 /ABS8.0_V0D_DF063/ABS8.0_V0E_DF063/ABS8.0_V0F_DF063 ABS 8.0X84 4.0