A/T Interlock System - Shift Lock System Circuit Troubleshooting
  1. Release the brake pedal, and measure the voltage between shift lock solenoid connector terminals No. 1 and No. 2. The shift lever must be in P.
Is there battery voltage?
YES -
Repair short to body ground in the wire between PCM connector terminal A28 and the shift lock solenoid.■
NO -
Check the shift lock mechanism. If the mechanism is OK, replace the shift lock solenoid. ■
  1. Turn the ignition switch to LOCK (0).
  1. Jump the SCS line with the HDS.
  1. Disconnect PCM connector A (49P).