Innova 3030A, Owner'S Manual

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8 OBD2
Using the Code Reader
CODE RETRIEVAL PROCEDURE
CODE RETRIEVAL PROCEDURE
Never replace a part based only on the DTC definition. Each DTC has a set of
testing procedures, instructions and flow charts that must be followed to confirm the
location of the problem. This information is found in the vehicle's service manual.
Always refer to the vehicle's service manual for detailed testing instructions.
Check your vehicle thoroughly before performing any test. See
Preparation for Testing on page 7 for details.
ALWAYS observe safety precautions whenever working on a vehicle.
See Safety Precautions on page 2 for more information.
1. Turn the ignition off.
2. Locate the vehicle's 16-pin Data Link Connector
(DLC). See page 3 for connector location.
3. Connect the Code Reader’s cable connector to the
vehicle's DLC. The cable connector is keyed and
will only fit one way.
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If you have problems connecting the cable
connector to the DLC, rotate the connector
180° and try again.
If you still have problems, check the DLC on
the vehicle and on the Code Reader. Refer to
your vehicle's service manual to properly check
the vehicle's DLC.
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After the Code Reader’s test connector is properly connected to the
vehicle's DLC, the Vehicle icon should display to confirm a good
power connection.
4. Turn the ignition on. DO NOT start the engine.
5. The Code Reader will automatically link to the vehicle’s computer.
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The LCD display will show " rEAd .” If the LCD
display is blank, it indicates there is no power
at the vehicle's DLC. Check your fuse panel
and replace any burned-out fuses.
If replacing the fuse(s) does not correct the
problem, see your vehicle's repair manual to
locate the proper computer (PCM) fuse/circuit.
Perform any necessary repairs before
continuing.
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After 4-5 seconds, the Code Reader will retrieve
and display any Diagnostic Trouble Codes that
are in the vehicle's computer memory.
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If an error message ( Err , Err1 or Err2 ) is
shown on the Code Reader’s LCD display, it
indicates there is a communication problem.
This means that the Code Reader is unable to
communicate with the vehicle's computer. Do
the following:
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