Reading and Clearing Diagnostic Trouble Codes

NOTE: Before clearing any stored codes, first check for external fault codes, then internal fault codes. Record all codes before proceeding. See How to Display and Read Diagnostic Trouble Codes.

CLEARING TROUBLE CODES
Use command code "900" on the ISAT tool.

AFTER CLEARING CODES
If diagnostic procedures have been performed, or SRS components have been replaced, the following steps need to be performed and noted:
1. On completion of the diagnostic procedure, in each case, clear the trouble code and wait at least 40 seconds with the ignition switched ON. Then check to see whether any other trouble codes have been generated.
2. The diagnostic procedures mainly concern faults of permanent type (L). If the fault is of intermittent type (S). it may not occur just at the time when fault diagnosis is carried out.
3. Clear the fault and try to provoke it by jiggling the relevant connectors, wiring, etc.
4. If the fault cannot be made to occur in this manner, try replacing the component indicated by the fault code.
5. Each time a component is changed, clear the fault and drive the car for at least 10 minutes. Then check to see whether any trouble codes have been generated.