Circuit/System Testing

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Ignition/Vehicle & All vehicle systems - Off
NOTE: It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.
Disconnect the electrical connector: X159 Inline Harness Connector
Test for less than 10 Ω between the test points: Low Reference circuit terminal E & Ground
- If 10 Ω or greater
1. Disconnect the appropriate electrical connector: K20 Engine Control Module
2. Test for less than 2 Ω between the test points: Low Reference circuit terminal E @ Component harness & Terminal X2 29 @ Control module harness
  - If 2 Ω or greater - Repair the open/high resistance in the circuit.
  - If less than 2 Ω - Replace the component: K20 Engine Control Module
- Go to next step: If less than 10 Ω
Engine - Running
Perform the scan tool control function: Camshaft Position Actuator Solenoid Valve - Off
Verify a test lamp does not turn On between the test points: Control circuit terminal D & Ground
- If the test lamp turns On
1. Ignition/Vehicle - Off & Remove - Test lamp
2. Disconnect the appropriate electrical connector: K20 Engine Control Module
3. Ignition - On/Vehicle - In Service Mode
4. Test for less than 1 V between the test points: Control circuit terminal D @ Component harness & Ground
  - If 1 V or greater - Repair the short to voltage on the circuit.
  - If less than 1 V - Replace the component: K20 Engine Control Module
- Go to next step: If the test lamp does not turn On
Remove - Test Lamp
Perform the scan tool control function: Camshaft Position Actuator Solenoid Valve - On
Verify the scan tool parameter: Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status = OK
- If not the specified state
1. Ignition/Vehicle - Off
2. Disconnect the appropriate electrical connector: K20 Engine Control Module
3. Test for infinite resistance between the test points: Control circuit terminal D @ Component harness & Ground
  - If less than infinite resistance - Repair the short to ground on the circuit.
  - If infinite resistance - Replace the component: K20 Engine Control Module
- Go to next step: If the specified state
Connect a 3 A fused jumper wire between the test points: Control circuit terminal D & Ground
Perform the scan tool control function: Camshaft Position Actuator Solenoid Valve - On
Verify the scan tool parameter: Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status = Malfunction
- If not the specified state
1. Ignition/Vehicle - Off & Remove - Jumper wire(s)
2. Disconnect the appropriate electrical connector: K20 Engine Control Module
3. Test for less than 2 Ω between the test points: Control circuit terminal D @ Component harness & Terminal 11 X2 @ Control module harness
  - If 2 Ω or greater - Repair the open/high resistance in the circuit.
  - If less than 2 Ω - Replace the component: K20 Engine Control Module
- Go to next step: If the specified state
Verify DTC P0011 is not set.
- If the DTC is set
1. Verify a condition does not exist with the component:
  - Camshaft Position Actuator Solenoid Valve - Binding or Sticking. Refer to Camshaft Position Actuator Solenoid Valve Inspection (Off-Vehicle)Camshaft Position Actuator Solenoid Valve Inspection (On-Vehicle)
  - Camshaft Position Actuator - Damaged or misaligned reluctor ring. Refer to Camshaft Position Actuator Cleaning and Inspection
  - If a condition exists - Repair or replace as necessary
  - If no condition exists - Refer to Component Testing
- Go to next step: If the DTC is not set
Test or replace the component: Q6 Camshaft Position Actuator Solenoid Valve