For 1990-2009 cars

### Circuit Description

The powertrain control module (PCM) uses the crankshaft position (CKP) sensor and the exhaust camshaft position (CMP) sensor information to monitor the correlation between the crankshaft and camshaft positions. If the PCM detects a CMP sensor pulse occurs during the incorrect CKP, DTC P0017 will set.

### DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P0017 Crankshaft Position (CKP) - Exhaust Camshaft Position (CMP) Correlation

### Conditions for Running the DTC

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

• | The engine is running.

• | The camshaft position (CMP) actuator is commanded to zero.

• | DTC P0017 runs continuously once the above conditions are met.

### Conditions for Setting the DTC

The PCM detects 25 out of the last 35 cam revolutions occur with 2 cam sensor pulses outside the CKP window.

### 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 P0017 sets.

The following conditions may cause this DTC to set:

• | An improperly torqued crankshaft balancer

• | A mis-built or mis-timed engine

• | A loose or missing crankshaft balancer bolt

• | Excessive crankshaft endplay

• | The CMP actuator solenoid stuck open

• | The CMP actuator stuck in a position other than 0 degrees

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module 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 |

1. Turn OFF the ignition.
2. Inspect the crankshaft balancer bolt for the proper torque. Refer to Fastener Tightening Specifications and Crankshaft Balancer Replacement .

Was the crankshaft balancer bolt at the proper torque?

Go to Step 4

Go to Crankshaft Balancer Replacement

4 |

1. Disconnect the camshaft position (CMP) actuator solenoid.
2. Remove the CMP actuator solenoid. Refer to Camshaft Position Actuator Solenoid Valve Replacement .
3. Connect a jumper wire between the high control circuit of the CMP actuator solenoid and 12 volts. Refer to Using Connector Test Adapters .
4. Connect a jumper wire between the low reference circuit of the CMP actuator solenoid and a good ground. Refer to Using Connector Test Adapters .

Does the pintle inside the CMP actuator solenoid move?

Go to Step 5

Go to Step 7

5 | Inspect the CMP actuator for binding or being stuck. Refer to Camshaft Position Actuator Diagnosis . Did you find and correct the condition? | Go to Step 8 | Go to Step 6
6 | Inspect the engine for correct valve timing. Refer to Camshaft Timing Chain and Sprocket Replacement . Did you find and correct the condition? | Go to Step 8 | Go to Diagnostic Aids
7 | Replace the CMP actuator solenoid valve. Refer to Camshaft Position Actuator Solenoid Valve Replacement . Did you complete the replacement? | Go to Step 8 | --
8 |

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 9

9 | 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