2014 Chevrolet Impala LS: Diagnostic Guide for DTC P0010, P0013, P2088-P2091

Diagnostic Instructions

• Perform the Diagnostic System Check Instructions 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 Descriptors

• DTC P0010: Intake Camshaft Position Actuator Solenoid Valve Control Circuit
• DTC P0013: Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit
• DTC P2088: Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage
• DTC P2089: Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage
• DTC P2090: Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage
• DTC P2091: Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The camshaft position actuator system enables the engine control module (ECM) to change the timing of the camshafts while the engine is operating. The camshaft position actuator solenoid valve signal from the ECM is pulse width modulated (PWM). The ECM controls the camshaft position actuator solenoid valve duty cycle by controlling the amount of solenoid valve On time. The camshaft position actuator solenoid valve controls the advance or the retard of each camshaft. The camshaft position actuator solenoid valve controls the oil flow that applies the pressure to advance or retard the camshafts. The ECM controls the camshaft position actuator solenoid valve by supplying a 12 V pulse width modulated (PWM) signal. The ECM supplies a ground to the low reference circuit.

Conditions For Running The DTC

• The ignition voltage is greater than 11 V.
• The ECM has commanded the camshaft position actuator solenoid valve On.
• The DTCs are run continuously once the above conditions are met.

Conditions For Setting The DTC

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.

Action Taken When The DTC Sets

DTCs P0010, P0013 and P2088 - P2091 are type B DTCs.

Conditions For Clearing The DTC

DTCs P0010, P0013 and P2088 - P2091 are type B DTCs.

Diagnostic Aids

If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Circuit Test Status parameters for the component. The Circuit Test Status parameters change from OK or Not Run to Malfunction if there is a condition with the circuit or a connection.

Reference Information

• Schematic Reference: Engine Controls Schematics
• Connector End View Reference: COMPONENT CONNECTOR END VIEWS - INDEX
• Component View Reference: Powertrain Component Views
• Description and Operation: Camshaft Actuator System Description
• Electrical Information Reference:
  • Circuit Testing
  • Connector Repairs
  • Testing for Intermittent Conditions and Poor Connections
  • Wiring Repairs
• DTC Type Reference: Powertrain Diagnostic Trouble Code (DTC) Type Definitions
• Scan Tool Reference: Control Module References for scan tool information

Circuit/System Verification

1. Ignition On.
2. Verify DTC P0335, P0336, P0340, or P0341 is not set.
   • If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle.
   • If none of the DTCs are set
3. Verify the scan tool parameters listed below do not display Malfunction:
   • Intake Camshaft Position Actuator Solenoid Valve Control Circuit Open test status
   • Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage test status
   • Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage test status
   • Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Open test status
   • Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage test status
   • Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage test status
   • If Malfunction is displayed, refer to Circuit/System testing (below).
   • If Malfunction is not displayed
4. Engine idling at normal operating temperature.
5. Verify the scan tool parameters listed below do not display Malfunction when commanding the appropriate scan tool Camshaft Position Actuator from 0-10° and back to 0° with a scan tool:
   • Intake Camshaft Position Actuator Solenoid Valve Control Circuit Open test status
   • Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage test status
   • Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage test status
   • Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Open test status
   • Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage test status
   • Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage test status
   • If Malfunction is displayed, refer to Circuit/System testing (below).
   • If Malfunction is not displayed
6. 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 data.
7. Verify the DTC does not set.
   • If the DTC sets, refer to Circuit/System testing (below).
   • If the DTC does not set
8. All OK.

Circuit/System Testing

1. Ignition Off and all vehicle systems Off, disconnect the appropriate harness connector at the Q6 Camshaft Position Actuator Solenoid Valve. It may take up to 2 min for all vehicle systems to power down.
2. Test for less than 5 Ω between the low reference circuit terminal B or 2 and ground.
   • If 5 Ω or greater
3. Ignition Off, disconnect the harness connector at the K20 Engine Control Module.
4. Test for less than 2 Ω in the low reference circuit end to end.
   • If 2 Ω or greater, repair the open/high resistance in the circuit.
   • If less than 2 Ω, replace the K20 Engine Control Module.
5. If less than 5 Ω
6. Ignition On.
7. Verify that a test lamp does not illuminate between the control circuit terminal A or 1 and ground.

   NOTE: A test lamp must be used for this test. The control circuit is pulled-up to a low current voltage, 1.5-4.5 V on the control circuit is normal.

   • If the test lamp illuminates
     • Ignition Off, disconnect the harness connector at the K20 Engine Control Module, ignition On.
     • Test for less than 1 V between the control circuit and ground.
       • If 1 V or greater, repair the short to voltage on the circuit.
       • If less than 1 V, replace the K20 Engine Control Module.
   • If the test lamp does not illuminate
     • Remove the test lamp.
     • Connect the DMM negative lead to the control circuit terminal A or 1. Connect the DMM positive lead to B+. Set the DMM on the diode setting. Command the Camshaft Position Actuator Solenoid Valve On and Off with a scan tool. The DMM should transition from OL when commanded Off to less than 1 V when commanded On.
       • If the circuit voltage does not correspond to the specified values
         • Ignition Off, disconnect the harness connector at the K20 Engine Control Module.
         • Test for less than 2 Ω in the control circuit end to end.
           • If 2 Ω or greater, repair the open/high resistance in the circuit.
           • If less than 2 Ω.
         • Test for infinite resistance between the control circuit terminal A or 1 and ground.
           • If less than infinite resistance, repair the short to ground in the circuit.
           • If infinite resistance, replace the K20 Engine Control Module.
       • If the circuit voltage corresponds to the specified values.

Component Testing

1. Ignition Off, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve.
2. Test for 4.1-7.7 Ω between the control terminal A or 1 and the low reference circuit terminal B or 2
   • If not between 4.1-7.7 Ω: Replace the Q6 Camshaft Position Actuator Solenoid Valve.
   • If between 4.1-7.7 Ω
3. Test for infinite resistance between each terminal and the Q6 Camshaft Position Actuator Solenoid Valve housing.
   • If not infinite resistance: Replace the Q6 Camshaft Position Actuator Solenoid Valve.
   • If infinite resistance
4. All OK

Repair Instructions

• Perform the Diagnostic Repair Verification after completing the repair.
• Camshaft Position Actuator Intake Solenoid Valve Replacement
• Camshaft Position Actuator Exhaust Solenoid Valve Replacement
• Control Module References for Engine Control Module replacement, programming, and setup