SAAB WIS ONLINE

Control module power supply

Control module power supply

Battery voltage (+30 circuit)

+30 current is fed via fuse 12 to control module pin 20. The control module uses +30 current for the bus function when the ignition is in position OFF (+15).


Battery voltage (+15 circuit)

+15 current is fed via fuse B to pin 21 of the control module. The control module is activated by +15 current.

Diagnostics

Should the power supply drop below 9 V or exceed 16 V for at least 0.5 seconds, diagnostic trouble code P0560 will be generated and the TCM will go into Limp-Home mode.