Test Description
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 numbers below refer to the step numbers on the diagnostic table.
- 2: This step verifies that the malfunction is present.
- 3: This step tests for electromagnetic interference (EMI) on the CKP sensor circuits.
DTC P0336
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Controls Connector End Views and Powertrain Control Module (PCM) 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 |
IMPORTANT:
If DTC P0335 is also set, diagnose DTC P0335 before proceeding with this DTC.
|
- | Go to Step 3 | Go to Intermittent Conditions |
| 3 | Inspect all of the crankshaft position sensor (CKP) circuits for the following conditions:
Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 4 |
| 4 | Test the 12-volt reference circuit for an intermittent condition or shorted to other circuits. Refer to Testing for Electrical Intermittents
and Inducing Intermittent Fault Conditions
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 5 |
| 5 | Test the low reference circuit for an intermittent condition. Refer to Testing for Electrical Intermittents
and Inducing Intermittent Fault Conditions
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 6 |
| 6 | Test the CKP sensor signal circuit for an intermittent condition. Refer to Testing for Electrical Intermittents
and Inducing Intermittent Fault Conditions
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 7 |
| 7 | Test for an intermittent and for a poor connection 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 12 | Go to Step 8 |
| 8 | Test for an intermittent and for a poor connection at the powertrain control module (PCM). 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 12 | Go to Step 9 |
| 9 | Remove the CKP sensor. Refer to Crankshaft Position (CKP) Sensor Replacement
. Inspect the CKP sensor for the following conditions:
Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 10 |
| 10 | Inspect the reluctor wheel for the following conditions:
Refer to Crankshaft and Bearings Installation in Engine Mechanical. Did you find and correct the condition? |
- | Go to Step 12 | Go to Step 11 |
| 11 | Replace the CKP sensor. Refer to Crankshaft Position (CKP) Sensor Replacement
. Did you complete the replacement? |
- | Go to Step 12 | - |
| 12 |
|
- | Go to Step 2 | Go to Step 13 |
| 13 | 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 |