Quick Test 4.0 - Continuous Memory Codes

Continuous DTCs are concerns which were detected during normal vehicle operation. These DTCs are retained for 40 warm-up cycles.

Some special considerations for KOEO Quick Test include the following:

• The cause of some continuous DTCs may have been eliminated if KOEO and/or Key On, Engine Running (KOER) DTCs were repaired. Always retest and repair any DTCs that still remain.
• If DTCs are present, go to DIAGNOSTIC TROUBLE CODE CHARTS  for repair information. Erase the DTC, carry out the TRANSAXLE DRIVE CYCLE TEST , and repeat all Quick Test procedures after completing repairs on the DTCs.
• If the continuous memory DTCs test passes and a concern is still present, refer to DIAGNOSIS BY SYMPTOM  and TSBs for the concern diagnosis.

To carry out continuous DTCs test:

• Select VEHICLE AND ENGINE SELECTION menu.
• Select year, engine, or model with the appropriate qualifier if needed (for example, transmission or 49 state or California).
• Select DIAGNOSTIC DATA LINK menu.
• Select DIAGNOSTIC TEST MODES menu.
• Select RETRIEVE/CLEAR CONTINUOUS DTCs menu.
• Follow operating instructions from the diagnostic tool menu screen.
• Record all DTCs displayed.
• Carry out TRANSAXLE DRIVE CYCLE TEST .
• Rerun Continuous Memory Codes Test. If DTCs have returned, repair as required. Road test and rerun all Continuous Memory Codes Test procedures.