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 P2565
| 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 |
|
- | Go to DTC P0653 | Go to Step 3 |
| 3 |
|
- | Go to Step 4 | Go to Step 5 |
| 4 |
|
- | Go to Step 5 | Go to Intermittent Conditions |
| 5 |
|
4.8 V | Go to Step 7 | Go to Step 6 |
| 6 | Is the voltage more than the specified value? | 5.2 V | Go to Step 11 | Go to Step 8 |
| 7 | Measure the voltage from the signal circuit to a good ground with a DMM. Is the voltage less than the specified value? |
4.8 V | Go to Step 12 | Go to Step 10 |
| 8 | Measure the current between the 5-volt reference circuit and the low reference circuit at the TC vane position sensor connector, with a DMM Is the current less than the specified value? |
170 mA | Go to Step 9 | Go to Step 13 |
| 9 | Test the vane position sensor low reference circuit for high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 14 |
| 10 | Test the vane position sensor low reference circuit for an open and for a high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 14 |
| 11 |
IMPORTANT:
Disconnecting the engine control module (ECM) may eliminate the short during testing. Test the vane position sensor signal circuit for a short to voltage. Refer toCircuit Testing
and Wiring Repairs
in Wiring Systems.Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 14 |
| 12 | Test the vane position sensor signal circuit for an open and for a high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 17 | Go to Step 14 |
| 13 | Test for an intermittent and for a poor connection at the vane position sensor. 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 17 | Go to Step 15 |
| 14 | Test for an intermittent and for a poor connection at the ECM. 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 17 | Go to Step 16 |
| 15 | Replace the turbocharger vane position sensor. Refer to Turbocharger Vane Position Sensor Replacement
. Did you complete the replacement? |
- | Go to Step 17 | - |
| 16 | Replace the ECM. Refer to Engine Control Module (ECM) 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 |