Conditions for Clearing the MIL/DTC
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. 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 Control Module (ECM) Connector End Views or Engine Controls Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check-Engine Controls? | - | Go to Step 2 | Go to Diagnostic System Check - Engine Controls |
| 2 | Attempt to start the engine. Does the engine start and run? |
- | Go to Intermittent Conditions | Go to Step 3 |
| 3 |
|
B+ | Go to Step 4 | Go to Step 8 |
| 4 | Measure the voltage from the 12-volt reference to the low reference of the CKP sensor with a DMM. Is the voltage within the specified value? |
B+ | Go to Step 5 | Go to Step 7 |
| 5 | Connect a DMM between the CKP sensor signal and a good ground. Does the DMM display more than the specified value? |
1 V | Go to Step 9 | Go to Step 6 |
| 6 |
|
45-55% | Go to Step 12 | Go to Step 10 |
| 7 | Test the low reference circuit for an open. Refer to Testing for Continuity
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 12 |
| 8 | Test the 12-volt reference circuit for an open or 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 17 | Go to Step 12 |
| 9 | Test the CKP signal circuit for a short to voltage or a short to the 12-volt reference circuit. Refer to Testing for a Short to Voltage
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 15 |
| 10 | Test the CKP signal circuit for an open or a short to ground. Refer to Testing for Continuity
, Testing for Short to Ground
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 11 |
| 11 | Check for poor connections at the CKP sensor. Refer to Testing for Intermittent Conditions and Poor Connections
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 13 |
| 12 | Check for poor connections at the ECM. Refer to Testing for Intermittent Conditions and Poor Connections
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 15 |
| 13 |
|
- | Go to Step 17 | Go to Step 14 |
| 14 | Inspect the CKP reluctor wheel for the following conditions:
Refer to Crankshaft Reluctor and Oil Pump Drive Gear Replacement in Engine Mechanical-6.6L. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 16 |
| 15 | Replace the ECM. Refer to Engine Control Module (ECM) Replacement
. Did you complete the replacement? |
- | Go to Step 17 | - |
| 16 | Replace the CKP sensor. Refer to Crankshaft Position (CKP) Sensor Replacement
. Did you complete the replacement? |
- | Go to Step 17 | - |
| 17 |
|
- | Go to Step 2 | Go to Step 18 |
| 18 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? |
- | Go to Diagnostic Trouble Code (DTC) List | System OK |