For 1990-2009 cars

### Circuit Description

The powertrain control module (PCM) uses the crankshaft position (CKP) sensor and the intake camshaft position (CMP) sensor information to monitor the correlation between the crankshaft and intake camshaft position. If the PCM detects a CMP sensor pulse occurs during the incorrect crank position DTC P0016 will set.

### DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0016 Crankshaft Position (CKP) Intake Camshaft Position (CMP) Correlation

### Conditions for Running the DTC

• | DTCs P0335, P0336, P0340, P0341, P0365 and P0366 are not set.

• | The engine is operating for more than 5 seconds.

• | DTC P0016 runs continuously once the above conditions are met.

### Conditions for Setting the DTC

The PCM detects 8 of the last 10 cam sensor pulses occur during the incorrect crank position.

### 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

Important: The scan tool control of the CMP actuator solenoid is inhibited when DTC P0016 sets.

• | Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, crankshaft, or timing chain can cause this DTC to set.

• | Excessive crankshaft endplay can cause this DTC to set.

• | For an intermittent condition refer to Intermittent Conditions .

### Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. This step determines if a condition is present.

2. 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 | Yes | No
--- | --- | --- | ---
Schematic Reference: Engine Controls Schematics Connector End View Reference: Powertrain Control Module Connector End Views or Engine Controls Connector End Views
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Observe the Freeze Frame/Failure Records for this DTC .
2. Turn OFF the ignition for 30 seconds.
3. Start the engine.
4. Operate the vehicle within the Conditions for running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.

Did the DTC fail this ignition?

Go to Step 3

Go to Diagnostic Aids

3 | Observe the DTC Information with a scan tool. Does the scan tool display that any other DTCs also failed this ignition? | Go to Diagnostic Trouble Code (DTC) List - Vehicle | Go to Step 4
4 | Repair one of the following conditions with the timing chain system:

• | A timing chain tensioner condition

• | An incorrectly installed timing chain

• | Excessive play in the timing chain

• | A timing chain that jumped teeth

| Refer to Timing Chain Alignment Diagram and Camshaft Timing Chain and Sprocket Replacement .

Did you complete the repair?

Go to Step 5

--

5 |

1. Clear the DTCs with a scan tool.
2. Turn OFF the ignition for 30 seconds.
3. Start the engine.
4. Operate the vehicle within the conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.

Did the DTC fail this ignition?

Go to Step 2

Go to Step 6

6 | Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed? | Go to Diagnostic Trouble Code (DTC) List - Vehicle | System OK