Zurich ZR4, Owner'S Manual

Using the Code Reader 

ERASING DIAGNOSTIC TROUBLE CODES (DTCs) 

20

„

If DTC’s were retrieved and you are going to perform the repairs
yourself, proceed by consulting the Vehicle’s Service Repair
Manual for testing instructions, testing procedures, and flow
charts related to retrieved code(s).

ERASING DIAGNOSTIC TROUBLE CODES (DTCs) 

When the Code Reader’s ERASE function is used to erase 
the DTCs from the vehicle's on-board computer, "Freeze 
Frame" data and manufacturer-specific enhanced data are 
also erased. Unlike other codes which can be removed 
from the vehicle's control module, PERMANENT codes 
cannot. This holds true regardless of the tool being used 
or color of the status LED display. PERMANENT codes 
will automatically erase when the control module no 
longer detects the fault that originally caused the code. 

If you plan to take the vehicle to a Service Center for repair, 

DO NOT

erase the codes from the vehicle's computer. If the codes are erased, 
valuable information that might help the technician troubleshoot the 
problem will also be erased. 

Erase DTCs from the computer's memory as follows: 

When DTCs are erased from the vehicle's computer memory, 
the I/M Readiness Monitor Status program resets status of all 
the Monitors to a not run "flashing" condition. To set all of the 
Monitors to a DONE status, an OBD2 Drive Cycle must be 
performed. Refer to your vehicle's service manual for 
information on how to perform an OBD2 Drive Cycle for the 
vehicle under test. 

1.

If not connected already, connect the
Code Reader to the vehicle's DLC. (If 
the Code Reader is already connected 
and linked to the vehicle's computer, 
proceed directly to step 4. If not, 
continue to step 2.) 

2.

Turn the ignition on. 

DO NOT

 start the

engine. The Code Reader will
automatically link to the vehicle’s
computer. 

3.

Once codes have been retrieved, press
and release the Code Reader’s 

ERASE

button. A confirmation message 

shows on the display. 

„

If you change your mind and do not
wish to erase the codes, use the

DOWN 

 button, as necessary, to

highlight 

No

, then press the 

ENTER

 button. 

„

If you wish to continue, use the

DOWN 

 button, as necessary, to

highlight 

Yes

, then press the

ENTER

 button.