38C-8V1 MR-376-X76-38C000$060.mif
38C
ABS BOSCH 8.1
Vdiag No.: 18
SETTINGS
VP001: Enter VIN.
This command permits manual entry of the vehicle's VIN into the computer.
Use this command each time the computer is replaced.
The VIN number (VF...) can be found on the manufacturer's plate on the door pillar and on the body panel
under the bonnet.
Programming procedure:
– connect the diagnostic tool,
– refer to the BOSCH 8.1 ABS fault finding,
– select parameter VP001,
– enter the VIN,
– clear the computer memory using command RZ001 Fault memory,
– exit fault finding mode,
– switch off the ignition,
– wait for the end of powerlatch,
– on the identification screen, using ID010 V.I.N. code, check that the code being entered has been
correctly recognised.
VP004: Vehicle parameters.
This command allows you to identify the vehicle on which the computer is installed.
Using PR063 Vehicle parameters, check that the parameters have been correctly recognised.
VP006: Enter last APV* operation date.
Whenever the ABS system is worked on in the shop, the date must be entered.
Select command VP006 on the diagnostic tool.
Enter the service date using the diagnostic tool keypad.
Using ID020 Read last After-Sales operation date, check that the date has been entered.
VP007: Tachometric index.
This command is used to program the computer memory with the index required to calculate vehicle speed
from the speed at which the tyres fitted on the vehicle turn.
Command VP007 is only used to stop the ABS warning light flashing after the computer has been
replaced.
Using PR030 Tachometric index, check that the index has been entered correctly.
APV*: After-SalesIMPORTANT:
The vehicle speed information is not delivered to the other computers by the ABS computer.
The vehicle speed signal is delivered by a speed sensor located on the gearbox.
ANTI-LOCK BRAKING SYSTEM
Fault finding – Programming
38C-54
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
ALP8Extension of brake pedal travel following a regulation phase (with
an irregular pedal when entering regulation).
NOTESOnly address this customer complaint after a complete check with the diagnostic
tool.
Air transit from the hydraulic unit regulation channels to the brake circuits.
Bleed the circuits following the recommended procedure in MR 374, Mechanical, 30A, General information,
Braking circuit: Bleeding (use of diagnostic tool command modes).
After the operation, carry out a road test with ABS regulation.
If the fault persists, carry out the above operation again once or twice.
If the customer complaint is particularly pronounced, and the bleeds have not rectified it, contact the Techline.
ABS8.1X76_V18_ALP8
