Diagnostic Aids
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect for proper adjustment of the stop lamp switch and cruise/brake switch. Refer to Cruise Release Switch Adjustment and Stop Lamp Switch Adjustment .
- Check for intermittent and poor connections. Refer to Testing for Intermittent Conditions and Poor Connections
.
.
DTC P0504
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Exterior Lights Schematics and Cruise Control Schematics Connector End View Reference: Master Electrical Component List |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
Go to Diagnostic Aids | Go to Step 3 |
| 3 |
|
Go to Step 6 | Go to Step 4 |
| 4 |
|
Go to Step 5 | Go to Step 12 |
| 5 |
|
Go to Step 16 | Go to Step 8 |
| 6 |
|
Go to Step 7 | Go to Step 10 |
| 7 |
|
Go to Step 15 | Go to Step 11 |
| 8 | Test the ignition positive voltage circuit of the cruise/brake switch for an open, high resistance, or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 9 |
| 9 | Test for an open, high resistance, or short to ground in the cruise control release signal circuit of the cruise/brake switch. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 14 |
| 10 | Test the stop lamp switch signal circuit for a short to voltage. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 14 |
| 11 | Test the battery positive voltage circuit of the stop lamp switch for an open or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 13 |
| 12 | Test the cruise control release signal circuit of the cruise/brake switch for a short to voltage. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 17 |
| 13 | Test the stop lamp switch signal circuit for an open, high resistance, or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 14 |
| 14 | Inspect for poor connections at the harness connector of the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 17 |
| 15 | Inspect for poor connections at the harness connector of the cruise/brake switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 18 |
| 16 | Inspect for poor connections at the harness connector of the stop lamp switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 20 | Go to Step 19 |
| 17 | Replace the PCM. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 20 | - |
| 18 | Replace the stop lamp switch. Refer to Stop Lamp Switch Replacement . Did you complete the replacement? |
Go to Step 20 | - |
| 19 | Replace the cruise/brake switch. Refer to Cruise Release Switch Replacement
. Did you complete the replacement? |
Go to Step 20 | - |
| 20 |
|
Go to Step 2 | System OK |