Bosch Motronic MPi (35, 55 & BB-pin types) 20 pages

[shogun]

http://www.gaima.co.uk/peter/BoschMotronic.pdf


Contents
Overview of system operation
Catalytic converter and emission .. 6
Control functions. . 2
Fuel injection (MPi) . 5
Introduction. 1
Primaryand secondary ignition. . 4
Primary trigger. .3
Adjustments
Adjustment pre-conditions 7
Idle adjustments. . . . 10
Ignition timing checks. . 9
Throttle adjustments.. . .. 8
System sensor and actuator tests
Air temperature sensor (ATS) . . . 18
Airflow sensor (AFS) . 16
Carbon filter solenoid valve (CFSV) . 28
CO potentiometer ('pot') 19
Coolant temperature sensor (CTS) 20
Crank angle sensor (CAS) 11
ECM voltage supplies and earths. . 24
Fuel injector operation. . 14
Fuel pressure. .. . . '26
Hall-effect phase sensor (CID, GM 16-valve engines) . 15
Idle speed control valve (ISCV) 23
Knock sensor (KS) . 13
MAP sensor.. . 17
Oxygen sensor (OS) .. 27
Primary ignition. . . 12
System relays. . . .. 25
Throttle potentiometer sensor (TPS) 22
Throttle switch (TS) 21
Pin table -typical 35-pin (First Generation Motronic, BMW)
Pin table -typical 35-pin (Motronic 3.1, Citroen/Peugeot)
Pin table -typical 55-pin (Motronic 1.5, Vauxhall)
Pin table - typical 88-pin (Motronic MP3.1, BMW)
Faultcodes
Obtaining fault codes. . 29

[BigKriss]

good download...thanks