Test TC-48A - Pcm Failure Sri Mile Not Stored & Pcm Failure EEPROM Write Denied
NOTE:
After each repair, perform TEST VER-2A .
- Turn ignition on. Using scan tool, perform SRI memory test. If scan tool displays WRITE FAILURE, replace Powertrain Control Module (PCM). If scan tool does not displays WRITE FAILURE, go to next step.
- If scan tool displays WRITE REFUSED, to step 5). If scan tool does not display WRITE REFUSED, go to next step.
- If scan tool displays SRI MILEAGE INVALID, update mileage and retest SRI memory. If scan tool does not display SRI MILEAGE INVALID, go to next step.
- Compare SRI mileage stored with instrument panel odometer. If mileage is the same, retest SRI mileage. If mileage is not the same, update mileage and retest SRI memory.
- If scan tool displays WRITE REFUSED in step 1), it means PCM is busy. Using scan tool, perform SRI memory test. Retest SRI memory 2 more times if necessary. If scan tool displays WRITE REFUSED, replace PCM. If scan tool does not display WRITE REFUSED, test is complete.
NOTE:
A break in test sequence occurs at this point. Sequence skips from TEST TC-48A to TEST TC-51A. No tests have been omitted.