Test Description
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to the step number on the diagnostic table.
- 3: This step isolates the brake switch as a source for setting the DTC.
DTC P0719
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| 1 | Did you perform the Diagnostic System Check - Engine Controls? | - | Go to Step 2 | Go to Diagnostic System Check - Engine Controls in Engine Controls |
| 2 |
IMPORTANT:
Before clearing the DTC, use the scan tool in order to record the Failure Records. Using the Clear Info function erases the Failure Records from the PCM.
CAUTION:
Refer to SIR Caution
in Cautions and Notices.
|
- | Go to Step 3 | Go to Step 4 |
| 3 | Connect a fused jumper wire between terminal A and terminal B of the brake switch connector. Did the TCC Brake Switch status on the scan tool change from Open to Closed? |
- | Go to Step 7 | Go to Step 10 |
| 4 | Inspect the ENG IGN 1 fuse for an open. Refer to Circuit Protection - Fuses in Wiring Systems. Is the fuse open? |
- | Go to Step 5 | Go to Step 9 |
| 5 |
IMPORTANT:
The condition that affects this circuit may exist in other connecting branches of the circuit. Refer to Electrical Diagnosis for complete circuit distribution. Test the ignition 1 voltage circuit of the brake, switch for a short to ground.Refer to Testing for Short to Ground
and Wiring Repairs
in Wiring Systems.Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 6 |
| 6 | Test the TCC brake switch/cruise control release signal circuit of the brake switch for a short to ground. Refer to Testing for Short to Ground and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 11 |
| 7 |
|
- | Go to Step 12 | Go to Step 8 |
| 8 | Replace the brake switch. Refer to Stop Lamp Switch Replacement in Lighting Systems. Did you complete the replacement? |
- | Go to Step 12 | - |
| 9 |
IMPORTANT:
The condition that affects this circuit may exist in other connecting branches of the circuit. Refer to Electrical Diagnosis for complete circuit distribution. Test the ignition 1 voltage circuit of the brake switch for an open.Refer to Testing for Continuity
and Wiring Repairs
in Wiring Systems.Did you find and correct the condition? |
- | Go to Step 12 | - |
| 10 | Test the TCC brake switch/cruise control release signal circuit of the brake switch for an open. Refer to Testing for Continuity and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 11 |
| 11 | Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement in Engine Controls. Did you complete the replacement? |
- | Go to Step 12 | - |
| 12 | Perform the following procedure in order to verify the repair:
Has the test run and passed? |
- | Go to Step 13 | Go to Step 2 |
| 13 | With the scan tool, observe the stored information, capture info, and DTC Info. Does the scan tool display any DTCs that you have not diagnosed? |
- | Go to Diagnostic Trouble Code (DTC) List in Engine Controls | System OK |