Conditions for Clearing the MIL/DTC
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
- Clear the MIL and the DTC with a scan tool.
DTC P0335
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module (PCM) Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Attempt to start the engine. Does the engine start and run? |
- | Go to Step 3 | Go to Step 8 |
| 3 | Observe the 18X Crank Sensor parameter with the scan tool. Does the 18X Crank Sensor parameter change with engine speed? |
- | Go to Step 4 | Go to Step 5 |
| 4 |
|
- | Go to Step 5 | Go to Intermittent Conditions |
| 5 |
|
- | Go to Step 10 | Go to Step 6 |
| 6 |
|
- | Go to Step 9 | Go to Step 7 |
| 7 |
|
- | Go to Step 13 | Go to Step 11 |
| 8 |
|
4-8 V | Go to Step 14 | Go to Step 12 |
| 9 | Test the medium resolution engine speed signal circuit between the ICM and the powertrain control module (PCM) for a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 19 |
| 10 | Test the medium resolution engine speed signal circuit between the ICM and the PCM for a short to voltage. Refer to Circuit Testing
andWiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 19 |
| 11 | Test the medium resolution engine speed signal circuit between the ICM and the PCM for an open. Refer to Circuit Testing
andWiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 16 |
| 12 | Test the CKP sensor 2 signal circuit for an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 15 |
| 13 | Inspect for the following conditions:
Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 15 |
| 14 | Test for an intermittent or for poor connections at the CKP sensor. Refer to Testing for Intermittent Conditions and Poor Connections
andConnector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 17 |
| 15 | Test for an intermittent or for poor connections at the ICM. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 18 |
| 16 | Test for poor connections at the PCM. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 19 |
| 17 | Replace the CKP sensor. Refer to Crankshaft Position (CKP) Sensor Replacement
. Did you complete the replacement? |
- | Go to Step 20 | - |
| 18 | Replace the ICM. Refer to Ignition Control Module Replacement
. Did you complete the replacement? |
- | Go to Step 20 | - |
| 19 | Replace the PCM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? |
- | Go to Step 20 | - |
| 20 |
|
- | Go to Step 2 | Go to Step 21 |
| 21 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? |
- | Go to Diagnostic Trouble Code (DTC) List - Vehicle in Vehicle DTC Information | System OK |