The crankshaft position (CKP) sensor is located on top of the flywheel housing and under the fuel supply pump. The 45 gaps are arranged equally every 7.5 degrees space and one space, 30 degrees, by the amount of 3 gaps are provided on the flywheel periphery. The CKP sensor detects gaps and sends signals to the engine control module (ECM). Receiving these 45 pulses and reference signals, the ECM calculates the engine speed and exact position of the crankshaft. The CKP sensor is the magnet coil type, and is also called an inductive pickup. The magnetic field responds, collapses and restores to the passing gap of the sensor disc by generating an AC voltage. If the ECM detects the CKP sensor signals are not generated, this DTC will set.
This diagnostic procedure supports the following DTC:
DTC P0335 Crankshaft Position (CKP)
The ECM detects that the CKP sensor signals are not generated during 10 engine rotations.
• | The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails. |
• | The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this information in the Failure Records. |
• | The MIL resets when the ignition is turned OFF. |
• | A current DTC, Last Test Failed, clears when the diagnostic runs and passes. |
• | Clear the MIL and the DTC with a scan tool. |
Step | Action | Yes | No | ||||||||
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Schematic Reference: Engine Controls Schematics | |||||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |||||||||
2 |
Did you find and correct the condition? | Go to Step 11 | Go to Step 3 | ||||||||
3 |
Did you find and correct the condition? | Go to Step 11 | Go to Step 4 | ||||||||
4 |
Did you find and correct the condition? | Go to Step 11 | Go to Step 5 | ||||||||
5 |
Did you find and correct the condition? | Go to Step 11 | Go to Step 6 | ||||||||
6 |
Did you find and correct the condition? | Go to Step 11 | Go to Step 7 | ||||||||
7 |
Did the DTC fail this ignition? | Go to Step 8 | Go to Intermittent Conditions | ||||||||
8 | Replace the CKP sensor. Refer to Crankshaft Position Sensor Replacement . Did you complete the replacement? | Go to Step 9 | -- | ||||||||
9 |
Did the DTC fail this ignition? | Go to Step 10 | Go to Step 12 | ||||||||
10 |
Important: The new ECM must be programmed. Replace the ECM. Refer to Engine Control Module Replacement/Restore Fuel Rate Data and Fuel Injector Flow Rate Programming . Did you complete the replacement? | Go to Step 11 | -- | ||||||||
11 |
Did the DTC fail this ignition? | Go to Step 2 | Go to Step 12 | ||||||||
12 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? | System OK |