Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Brief Description







System Overview, Function





System Overview, Components
1 Trionic engine management system (430/589/600/608)
2 TCM (Transmission Control Module), control module for automatic transmission (502)
3 P bus (Powertrain bus)
4 MIU (Main Instrument Unit) (540)
5 I bus (Instrument bus)
6 SID (Saab Information Display) (541)
7 TWICE (Theft Warning Integrated Central Electronics), theft security, central locking system, etc. (632)
8 ACC (Automatic Climate Control) (216)
9 Audio, radio unit (353)
10 CDC (CD changer) (355)
11 PSM (Power Seat Memory) (357Dk)
12 PMM (Power Mirror Memory) (611)
13 DICE (Dashboard Integrated Central Electronics), lights, radiator fan, intermittent wipers, etc. (628)
14 Data link connector (H16-5/445)
15 Airbag (SRS) (331)
16 ABS/ABS-TC (Anti-block system) (547/328)