Alfa Romeo 156 1.8 & 2.0 Twin Spark - Complete Electrical & Technical Guide

Complete technical and electrical reference for Alfa Romeo 156 with 1.8 (144 hp) and 2.0 (155 hp) Twin Spark engines, published in Auto-Volt N°766 (April 2000). This workshop manual delivers comprehensive engine specifications and detailed coverage of the Bosch Motronic M.1.5.5 engine management system, including full ECU connector pin assignments (76 pins across 2 connectors), sensor and actuator locations and function (crankshaft position, camshaft phase, knock sensor, air flow meter, lambda probe, idle speed regulator), Bosch 5.3 ABS with electronic brake force distribution, and complete electrical system specifications for battery (60 Ah), alternator (120A), and starter (1.2 kW). Fuse and relay assignments are mapped out for main distribution board, secondary board, glove box, and engine compartment locations. Extensive wiring diagrams cover engine management, turn signals, stop lights, reverse lights, fog lights, rear fog lights, headlight levelling control, power window circuits, rear demister, windscreen wiper operation, mirror adjustment motors, central locking, alarm system, ABS function, airbag deployment circuits, and main electrical supply routing throughout the vehicle.