Diagnostic Aids
WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
In order to avoid a misdiagnosis, inspect for proper operation of the stop lamps.
For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections .
| Step | Action | Yes | No |
|---|---|---|---|
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 | Do the stop lamps operate properly? | Go to Step 3 | Go to Symptoms - Lighting Systems |
| 3 | Test the stop lamp switch signal circuit for an open or for a high resistance between the brake switch and the engine control module (ECM). Did you find and correct the condition? |
Go to Step 6 | Go to Step 4 |
| 4 | Inspect for poor connections at the harness connector of the ECM. Did you find and correct the condition? |
Go to Step 6 | Go to Step 5 |
| 5 | Replace the ECM. Refer to:
Did you complete the replacement? |
Go to Step 6 | - |
| 6 |
|
Go to Step 2 | System OK |