Measure the voltage between PCM connector terminals C12 and A8 or A9. Is there voltage?
YES | - | Go to Step 9 .
NO | - | Check for loose or poor connections at PCM connector terminal C12. If the connection is OK, update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM .■
Turn the ignition switch OFF. Disconnect the transmission range switch connector. |