Astra F
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Diagnostic Switch KM-640
Note: If TECH 1 is not available, blink code readout can be initiated using Diagnostic Switch KM-640. TECH 1 is however necessary for exact determination of faults.
Diagnostic Switch KM-640, Connect to Vehicle
The switch is turned to position "J" and connected to Diagnostic Plug X 13 (ALDL plug) in the passenger compartment.
Trouble Codes, Flash out Using Diagnostic Switch KM-640
Using Diagnostic Switch KM-640, excitation lead X 13 /Ter. J (diagnostic excitation lead for ETC) is connected with terminal "A" (ground) in the diagnostic plug. This triggers blink code readout with the ignition ON. Any trouble codes present will then be displayed via the ETC telltale.
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