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Component Test (Petrol) The following component test are used to detect faults which can occur on electronic components (sensors and actuators) of the engine system. A pre-condition for all of the tests is: There must be no fault codes stored in the memory of the engine control unit. If the engine telltale illuminates with the engine running, the fault code must first be read and the fault must be rectified using the TECH 1/2 checking procedures. The technician must observe the instructions on the test sheets as closely as possible. To repeat a test procedure, the [REPEAT TEST] key on the TECH 31 must be depressed and the test restarted using the instructions listed under procedure. After a test has been completed, restore the vehicle to its original condition (reconnect released plugs, re-insert relays or fuses). |
