contact us

Chevy Equinox Scope Exhaust Cam Shaft Actuator Diagnosis for Fault Code P0010 P0013

Diagnosis of exhaust cam shaft actuator using Autologic's DrivePRO

See how to diagnose and test fault codes P0010 and P0013 in Chevy vehicles using Autologic's DrivePRO. This video shows how to test using a simple bulb method or an advanced lab scope method.

Begin by identifying the vehicle you are working on

Select Domestic & Asian

Select Chevrolet

Please confirm the vehicle’s ignition key is in the Key On Engine Off position. Select Done

Select Detect Automatically

Select Enhanced Powertrain

Then, Select Quick Test

Select Run Quick Test

The quick test will display specific vehicle information and stored fault codes. Our subject vehicle has two fault codes stored for the exhaust camshaft actuator circuit. P0010 and P0013 as well as a fuel trim fault on the enhanced side

Select Save to save the quick test

Select back to return to the diagnostic menu

Select Sensors and Actuations

Using the search bar, locate and select Desired Exhaust Camshaft Position

Clear the search bar, and locate Exhaust Camshaft Position

We can now compare these two values

Be sure the wheels are blocked and the parking brake is on. Raise engine RPM to about 2000 RPM

Exhaust camshaft position should match Desired camshaft position. The values do not match, indicating a current fault with the camshaft actuator

On a good normally functioning engine, Exhaust camshaft position should match desired camshaft position. As shown here. The two values mirror one another

The solenoid circuit can be tested a few ways

Working at the exhaust camshaft actuator, disconnect the electrical connector by removing the plastic lock then press the release tab and pull connector straight up

The first quick test for the engine control module and wiring is to install an incandescent bulb in place of the solenoid to test the engine control modules ability to activate the solenoid

Using fused jumper wires attached to a bulb socket, insert the jumper wires into the exhaust camshaft actuator electrical connector

Start engine

In this case, the bulb will put a 2.2 amp load on the circuit, confirming the integrity of the wires and driver in the engine control module

If the bulb illuminates the engine control module is controlling the solenoid circuit and can be assumed to be functioning normally, pointing to a faulty solenoid

To further test the circuit, you can use a scope

Connect your test leads to the exhaust camshaft connector

Next, connect your scope leads to the test leads at the connector. We are connecting channel A to the control side of the solenoid. Then channel B to the solenoid ground

Attach your scope ground to the engine at a suitable grounding location

Start and idle engine

On channel A you should have a digital square wave from about 4 volts to battery positive volts

On channel B You should have a battery negative volts, close to zero volts

This test also confirms the engine control module is functioning normally and the solenoid is faulty