1. Measure the voltage between shift lock solenoid connector terminals while pressing the brake pedal.

Is there battery voltage?

YES | - | Check the shift lock mechanism. If the mechanism is OK, replace the shift lock solenoid .■
NO | - | Check for an open in the wire between PCM connector terminal E2 and shift lock solenoid connector. If the wire is OK, substitute a known-good PCM and recheck.■