Mitsubishi Car 1999-05

Reading & Clearing Codes

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Clearing Codes




NOTE
To erase diagnostic trouble codes with a scan tool, follow the directions given by the tools manufacturer.

  1. Turn the ignition switch OFF .
  2.  
  3. Disconnect the negative battery cable from the battery for 1 minute or more, then reattach it.
  4.  
  5. Turn ON the ignition switch and read the diagnostic trouble codes checking that a normal code is output.
  6.  

If there are still codes present, either the codes were not properly cleared (Are the codes identical to those flashed out previously-), or the underlying problem is still there (Are only some of the codes the same as previously-).

Control module reset procedures are a very important part of OBD II System diagnostics. This step should be done at the end of any fault code repair and at the end of any driveability repair.

Clearing codes can be performed by any of the methods below:



Clear the control module memory with the Generic Scan Tool (GST)
 
Clear the control module memory with the vehicle manufacturer-s specific tester
 
Turn the ignition OFF and remove the negative battery cable for at least 1 minute.
 

Removing the negative battery cable may cause other systems in the vehicle to loose their memory. Prior to removing the cable, ensure you have the proper reset codes for radios and alarms.


NOTE
The MIL will may also be de-activated for some codes if the vehicle completes 3 consecutive trips without a fault detected with vehicle conditions similar to those present during the fault.

With A Scan Tool

Control module reset procedures are a very important part of OBD II System diagnostics.

This step should be done at the end of any fault code repair and at the end of any driveability repair.

Clearing codes can be performed by any of the methods below:



Clear the control module memory with the Generic Scan Tool (GST)
 
Clear the control module memory with the vehicle manufacturer's specific tester
 


NOTE
The MIL will may also be de-activated for some codes if the vehicle completes three consecutive trips without a fault detected with vehicle conditions similar to those present during the fault.

Reading Codes



Reading the control module memory is one of the first steps in OBD II system diagnostics. This step should be initially performed to determine the general nature of the fault. Subsequent readings will determine if the fault has been cleared.

Reading codes can be performed by any of the methods below:



Read the control module memory with the Generic Scan Tool (GST)
 
Read the control module memory with the vehicle manufacturer-s specific tester
 

To read the fault codes, connect the scan tool or tester according to the manufacturer-s instructions. Follow the manufacturer-s specified procedure for reading the codes.

 
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