1. 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 .■

1. Turn the ignition switch OFF.

1. Disconnect the transmission range switch connector.