edmunds 2015 Chevy Truck Equinox AWD L4-2.4L Instructions

edmunds 2015 Chevy Truck Equinox AWD L4-2.4L

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 provide 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 Control Circuit Low Voltage

• DTC P2089
  Intake Camshaft Position Actuator Solenoid Control Circuit High Voltage

• DTC P2090
  Exhaust Camshaft Position Actuator Solenoid Control Circuit Low Voltage

• DTC P2091
  Exhaust Camshaft Position Actuator Solenoid Control Circuit High Voltage

Diagnostic Fault Information

Circuit

|

Short to Ground

|

High Resistance

|

Open

|

Short to Voltage

| Signal

Performance

|
---|---|---|---|---|---|---
Camshaft Position Actuator Solenoid Valve

High Control

|

P0010, P0013, P2088, P2090

|

P0010, P0013

|

P0010, P0013

|

P0010, P0013, P2089, P2091

|

P0011, P0014

|
Camshaft Position Actuator Solenoid Valve

Low Reference

|

—

|

P0010, P0013

|

P0010, P0013

|

—

|

—

|

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 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.

Actions Taken When the DTC Sets

• { With Turbocharger } DTCs listed in the DTC Descriptor Category = Type A DTC
• { Without Turbocharger } DTCs listed in the DTC Descriptor Category = Type B DTC — Exceptions listed below

Conditions for Clearing the DTC

• { With Turbocharger } DTCs listed in the DTC Descriptor Category = Type A DTC
• { Without Turbocharger } DTCs listed in the DTC Descriptor Category = Type B DTC — Exceptions listed below

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

• 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

Note:
If a crankshaft or camshaft position sensor DTC is set, the Camshaft Position Actuator output control will not function.

1. Ignition On.

2. Verify DTC P0335, P0336, P0340, or P0341 is not set.

   • If any of the DTCs are set
     If any of the DTCs are set, refer to the Diagnostic Trouble Code (DTC) List – Vehicle

   • If none of the DTCs are set

3. Observe the appropriate control circuit status parameters listed below with a scan tool:

   • Exhaust/Intake Camshaft Position Actuator Solenoid Valve Control Circuit Open test status

   • Exhaust/Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage test status

   • Exhaust/Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage test status

   • ⇒ If Malfunction is displayed
     Refer to Circuit/System Testing.

   • ⇓ 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 0–20° and back to 0° with a scan tool:

   • Camshaft Position Actuator Solenoid Valve Control Circuit Open test status

   • Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage test status Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage test status

   • ⇒ If Malfunction is displayed
     Refer to Circuit/System Testing

   • ⇓ If Malfunction is not displayed

6. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. 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.

   • ⇓ If the DTC does not set

8. All OK.

Circuit/System Testing

1. Ignition Off and all vehicle systems Off, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve. It may take up to 2 minutes for all vehicle systems to power down.

2. Test for less than 5 Ω between the low reference circuit terminal B or 2 and the ground.

   • ⇒ If 5 Ω or greater
   1. Ignition Off, and disconnect the harness connector at the K20 Engine Control Module.
   2. 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
   • ⇓ If less than 5 Ω

3. Ignition On.
   Note: A test lamp must be used for this test. The control circuit is pulled-up to a low current voltage, 1.5–3.5 V on the control circuit is normal.

4. Verify that a test lamp does not illuminate between the control circuit terminal A or 1 and the ground.

   • ⇒ If the test lamp illuminates
   1. Ignition Off, disconnect the harness connector at the K20 Engine Control Module, and ignition On.
   2. 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 the test lamp does not illuminate

5. Remove the test lamp.

6. Connect the DMM black lead to the control circuit terminal A or 1. Connect the DMM red lead to B+. Set the DMM on the diode setting. Command the CMP actuator solenoid ON and OFF with a scan tool. The DMM should transition from less than 1 V to OL.

   • ⇒ If the circuit voltage does not correspond to the specified values
   1. Ignition Off, and disconnect the harness connector at the K20 Engine Control Module.
   2. Test for less than 2 Ω in the control circuit end to end.
   • ⇒ If 2 Ω or greater, repair the open/high resistance or short to ground in the circuit
   • ⇒ If less than 2 Ω, replace the K20 Engine Control Module.
   • ⇓ If the circuit voltage corresponds to the specified values

7. Test or replace the Q6 Camshaft Position Actuator Solenoid Valve.

Component Testing

1. Ignition Off, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve.

2. Test for 8–13 Ω between the control terminal 1 and the low reference terminal 2.

   • ⇒ If not between 8–13 Ω
     Replace the Q6 Camshaft Position Actuator Solenoid Valve.

   • ⇓ If between 8–13 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 Solenoid Valve Replacement
• Control Module References for engine control module replacement, programming, and setup.

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>