Circuit Description
The powertrain control module (PCM) uses the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor signals to monitor the correlation between the crankshaft and camshaft positions. If the PCM detects that the timing between the crankshaft and the camshaft is incorrect, DTC P0016 sets.
DTC Descriptor
This diagnostic procedure supports the following DTC.
DTC P0016 Crankshaft Position (CKP) - Camshaft Position (CMP) Correlation
Conditions for Running the DTC
| • | DTCs P0335, P0336, P0340, P0341 are not set. |
| • | The engine speed is less than 1,500 RPM. |
| • | The diagnostic runs 24 times per engine revolution when the above conditions are met. |
Conditions for Setting the DTC
The PCM detects that the timing between the crankshaft and the camshaft is incorrect for less than 1 second.
Action Taken When the DTC Sets
| • | The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails. |
| • | The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records. |
Conditions for Clearing the MIL/DTC
| • | 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. |
Diagnostic Aids
| • | Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, crankshaft, or timing chain can cause this DTC to set. |
| • | For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections . |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
-
This step determines if a condition is present.
-
This step inspects for any recent engine mechanical repairs. An incorrectly installed camshaft, crankshaft or timing chain can cause this DTC to set.
Step | Action | Values | Yes | No | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |||||||||||
Does the scan tool display DTC P0016 failed this ignition? | -- | Go to Step 4 | Go to Step 3 | |||||||||||
3 |
Did the DTC fail this ignition? | -- | Go to Step 4 | Go to Diagnostic Aids | ||||||||||
4 | Observe the DTC Information with a scan tool. Does the scan tool display that DTC P0335, P0336, P0340, or P0341 also failed this ignition? | -- | Go to Step 5 | |||||||||||
Repair one of the following conditions:
Did you complete the repair? | -- | Go to Step 6 | -- | |||||||||||
6 |
Did the DTC fail this ignition? | -- | Go to Step 2 | Go to Step 7 | ||||||||||
7 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? | -- | System OK |
