Determining BCM Programmed Key Code
To determine unknown BCM key code, use PASS-Key(R) II (VATS) Interrogator (J 35628-A) and the following procedure.
- Connect Interrogator wiring to PASS-Key(R) II dash connector at base of steering column. DO NOT connect to steering column wiring.
- Turn on Interrogator and move key code switch to "1" position and attempt to start engine. If engine starts, key code is "1". If engine does not start, turn ignition off and press 4-minute timer on Interrogator.
- When timer indicator light goes out, move key code switch to next number and attempt to start engine. If engine does not start, continue trying different key codes until proper key code is found. See PASS-KEY(R) II KEY RESISTANCE table.
PASS-KEY(R) II KEY RESISTANCE
| Key Code No. | Nominal Value (Ohms) | Acceptable Range (Ohms) |
|---|---|---|
| 1 | 402 | 386-438 |
| 2 | 523 | 502-564 |
| 3 | 681 | 654-728 |
| 4 | 887 | 852-942 |
| 5 | 1130 | 1085-1195 |
| 6 | 1470 | 1411-1549 |
| 7 | 1870 | 1795-1965 |
| 8 | 2370 | 2275-2485 |
| 9 | 3010 | 2890-3150 |
| 10 | 3740 | 3590-3910 |
| 11 | 4750 | 4650-4960 |
| 12 | 6040 | 5798-6302 |
| 13 | 7500 | 7200-7820 |
| 14 | 9530 | 9149-9931 |
| 15 | 11,800 | 11,328-12,292 |