Test Description

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the numbers on the diagnostic table:

6. This step tests for a short to battery voltage on the active signal circuit.
7. This step tests the inactive signal circuit for an open or a high resistance.
8. If any ignition switch parameters that should be inactive in the present ignition switch position are active, 2 ignition switch signal circuits may be shorted together.

Fig 1: DTC B1422 Diagnostic Table (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC B1422 Diagnostic Table (2 Of 2)

Courtesy of GENERAL MOTORS CORP.