Test G: Ignition Key Replacement Procedure

Key Replacement (Spare Key Available)

The J 35628 Interrogator must be used to determine the proper electrical code of the key.
1. Insert the spare ignition key into the Key Code Reader on the J-35629 Interrogator.
2. Press the on-off rocker switch to the ON position.
3. A number from 1 to 15 will appear in the window designating the electrical code of the key.
4. Cut a new key having the same electrical code determined from J-35628 Interrogator.
5. Start the engine using the new key to insure that the key is correct both mechanically and electrically.

Key Replacement (No Spare Key Available)

1. If the ignition key is lost and there is no spare key, determine the mechanical code from the code on the Ignition Key Lock Cylinder. The codes may also be determined from the dealer invoice for the vehicle, or from the Pontiac Zone Office.
2. Cut a new key to this mechanical code. Use this key as a test key. This key will be used to operate the Ignition Switch for the remaining steps, and the resistance code of test key does not matter.
3. Remove the hush panel under the steering column and disconnect connector C202 (48 cavity connector leading into the steering column).
4. Connect the J 35628 Interrogator Adapter between the halves of connector C202.
5. Connect the J-35628 Interrogator to the two 2-pin connectors of the Interrogator Adapter.
6. Set the Key Code Selector on the J-35628 Interrogator to "1."
7. Attempt to start the engine using the key made in step 2.
^ If engine starts, the Key Code Selector is set to the correct electrical code. Cut a new key having this electrical code. The new key will be the replacement key.
^ If the engine does not start, turn Ignition Switch to OFF, then turn the Key Code Selector to the next higher position. Wait four minutes then attempt to start the engine using the new electrical code. Use the 4-minute Timer on the J-35628 Interrogator to indicate the four minute interval. Start the Timer by depressing the "Start" rocker switch. The red indicator will turn off at the end of a four minute interval. This procedure must be repeated until the engine can be started. Cut a new key having the engine can be started. Cut a new key having the electrical code that allowed the vehicle to start.