Test Description

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

The numbers below refer to the step numbers on the diagnostic table.

6. This step tests the TCC/cruise control switch signal circuit for a short to voltage.
7. This step verifies that the ECM receives a 12 volt signal from the TCC/cruise control switch when the brake pedal is pressed.
8. This step verifies that the TCC/cruise control switch has ignition 1 voltage.
10. This step verifies that the stop lamp switch has battery positive voltage.

Fig 1: DTC B0504 (Steps 1 - 2)
Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC B0504 (Steps 3 - 15)
Courtesy of GENERAL MOTORS CORP.

Fig 3: DTC B0504 (Steps 16 - 29)
Courtesy of GENERAL MOTORS CORP.