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Electrical System
6.4.1
DME control unit
The Bosch MS 4.6 control unit is installed in the rear section of the passenger side.
The wiring harness leads through an electrical connection directly to the engine. The
911 GT3 Cup (991) is equipped with the engine control unit Bosch MS 4.6 that has
been developed specifically for use in motorsports. The controller can be
programmed using a special software and also offers the possibility of error
diagnosis. Device programming is carried out exclusively at Porsche Motorsport. The
online fault diagnosis functionality is only available for the engineers of Porsche AG. If
an engine overhaul is to be performed at Porsche Motorsport, the corresponding
engine control unit has to be sent with the engine. On one hand, this ensures safe
operation on the engine test bench; on the other hand the engine lifetime counter in
the ECU can be reset immediately after overhauling the engine.
For safety reasons, disconnect the control unit from
the wiring harness when performing welding work.
The MS 4.6 provides the following functions:
•
Cylinder bank-selective lambda control
•
Pit lane speed limiter
•
Ignition cut for power shift with sequential gearbox
•
Asymmetric injection and ignition control
•
Knock control
•
Electronic throttle system and blipper function
Error codes Explanation
1
E_tmot
Error engine temperature
sensor
2
E_toil
Error engine oil
temperature sensor
4
E_tgear
Error gearbox oil
temperature sensor
8
E_tint
Error air intake
temperature sensor
10 E_tamb
Error ambient air
temperature sensor
11 E_thr
Error throttle potentiometer
12 E_lsu
Error lambda sensor bank 1
13 E_lsu2
Error lambda sensor bank 2
14 E_lsuh
Error lambda sensor
heating bank 1
15 E_lsuh2
Error lambda sensor
heating bank 2
16 E_ks1
Error knock sensor bank 1
17 E_ks2
Error knock sensor bank 2
21 E_crank
Error crankshaft sensor
22 E_ub
Error supply voltage
23 E_speedgps Error vehicle speed via GPS
25 E_poil
Error engine oil pressure
sensor
26 E_pcrank
Error crankcase pressure
sensor
27 E_pwat
Error engine coolant pressure
sensor
28 E_pamb
Error ambient pressure sensor
29 E_paddn
Error shift paddle downshift
30 E_padup
Error shift paddle upshift
31 E_etcdiff
Error deviation throttle flap
32 E_aps
Error throttle pedal
33 E_lap
Error lap function
35 E_gearpoti Error gear potentiometer
36 E_steer
Error steering wheel sensor
37 E_yaw
Error yaw rate sensor
38 E_mapsw
Error map switch
41 E_accx
Error acceleration sensor
42 E_accy
Error acceleration sensor
43 E_accz
Error acceleration sensor
44 E_speed
Error speed signal
45 E_vwheel_fl Error wheel speed sensor
front left
NOTE
Version: 16.12.2014
259
911 GT3 Cup (991)
MY 2015
Содержание 2015 911 GT3 Cup
Страница 1: ...Technical manual 911 GT3 Cup 991 MY 2015...
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