User Manual

LAUNCH

TOUCH PRO ELITE User Manual

Note: Diagnostic Trouble Codes or Fault Codes can be used to identify

which engine systems or components that are malfunctioning. Never replace

a part based only on the DTC definition. Retrieving and using DTCs for

troubleshooting vehicle operation is only one part of an overall diagnostic

strategy. Follow testing procedures (in vehicle’s service manual), instructions

and owcharts to conrm the locations of the problem.

2. Erase Codes

After reading the retrieved codes from the vehicle and certain repairs have been

carried out, you can use this function to erase the codes from the vehicle. Before

performing this function, please be sure the vehicle’s ignition key is in the ON

position with the engine o󰀨.

Note:

• When this function is used to erase DTCs from the vehicle’s on-board

computer, “Freeze Frame” data is erased and “Permanent” DTCs ARE

NOT erased.

• When data is erased from the vehicle’s computer memory, the I/M

Readiness Monitor Status program resets the status of all Monitors to a

“Not Completed” status. To set all of the Monitors to a “Completed” status,

an OBD II Drive Cycle must be performed. Refer to your vehicle’s service

manual for information on how to perform an OBD II Drive Cycle for the

vehicle under test.

After clearing, you should retrieve trouble codes once more or turn ignition on

and retrieve codes again. If there are still some trouble codes in the system,

please troubleshoot the code using a factory diagnosis guide, then clear the

code and recheck.

3. I/M Readiness

I/M refers to Inspection and Maintenance that is legislated by the Government

to meet federal clean-air standards. I/M Readiness indicates whether or not the

various emissions-related systems on the vehicle are operating properly and are

ready for Inspection and Maintenance testing.

The purpose of the I/M Readiness Monitor Status is to indicate which of the

vehicle’s Monitors have run and completed their diagnosis and testing, and

which ones have not yet run and completed testing and diagnosis of their

designated sections of the vehicle’s emissions system.

The I/M Readiness Monitor Status function also can be used (after repair of

a fault has been performed) to confirm that the repair has been performed