Output State Control - 97 My; Low And High Speed Fans; Electromechanical Outputs - Aston Martin DB7 Workshop Manual

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The Aston Martin Lagonda Diagnostic System
Users Guide
Output State Control - 9 7 M Y
This menu item provides a quick test of the basic electro-
mechanical components controlled by the PCM. These
tests should be performed in a key on engine off state.
The selections available are:
• Low Speed Cooling Fans
• High Speed Cooling Fans
• Set Electromechanical Outputs
Low and High Speed Fans
Selecting and confirming either the low or high speed
cooling fans will run the fans at the selected speed for 5
seconds to verify their operation.
Electromechanical Outputs
This selection will cause the following electromechanical
devices to operate for five seconds
Air Pump
Fuel Pumps
Canister Purge Valve
Idle Air Control Valve
Observing each device in turn as the PCM outputs are
turned ' O n ' will enable the technician to verify correct
operation.
September 1996 9-35