For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• | Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category.

### DTC Descriptor

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

### Circuit/System Description

The engine control module (ECM) 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.

### 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 when the above conditions are met.

### Conditions for Setting the DTC

The ECM detects 8 of the last 10 cam sensor pulses occur during the incorrect crankshaft 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

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

### Reference Information

#### Schematic Reference

Engine Controls Schematics

#### Connector End View Reference

• | Engine Controls Connector End Views

• | Engine Control Module Connector End Views

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

• | Scan Tool Data List

• | Scan Tool Data Definitions

### Circuit/System Verification

Observe the DTC Information with a scan tool.

⇒ | If the scan tool displays that any other DTCs also failed this ignition, refer to Diagnostic Trouble Code (DTC) List - Vehicle .

⇒ | If only DTC P0016 is displayed, continue with Circuit/System Testing.

### Circuit/System Testing

1. With the ignition OFF, inspect the crankshaft balancer bolt for the proper torque. Refer to Fastener Tightening Specifications .

⇒ | If the crankshaft balancer bolt is not at the proper torque, refer to Crankshaft Balancer Replacement .

2. Remove the intake 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 battery voltage. Connect a jumper wire between the low reference circuit of the CMP actuator solenoid and a good ground. The pintle of the solenoid should move.

⇒ | If the pintle inside the CMP actuator solenoid does not move, replace the CMP actuator solenoid.

4. Inspect the intake CMP actuator for binding or being stuck.
5. Inspect the engine for correct valve timing. Refer to Camshaft Timing Chain, Sprocket, and Tensioner Replacement .

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

• | Camshaft Position Intake Actuator Replacement

• | Camshaft Position Actuator Solenoid Valve Replacement