Intake Swirl Solenoid Circuit Short To Ground
2530-INTAKE SWIRL SOLENOID CIRCUIT SHORT TO GROUND
For a complete wiring diagram Consult Diagrams/Electrical
- When Monitored:
With the ignition on and the Intake Swirl Servo Motor command off.
- Set Condition:
The Engine Control Module (ECM) detects that the Intake Swirl Servo Motor Control circuit is shorted to ground for 2.3 seconds.
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
Diagnostic Test
1. DTC IS ACTIVE
Ignition on, engine not running.
With the scan tool, Clear DTCs in the Engine Control Module (ECM).
With the scan tool, actuate the Intake Swirl Servo Motor.
Monitor the scan tool for at least two minutes.
With the scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
- Go To 2
No
- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.Component Tests and General Diagnostics
2. INTAKE SWIRL SERVO MOTOR CONTROL CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the Intake Swirl Servo Motor harness connector.
Disconnect the Engine Control Module (ECM) harness connector.
Measure the resistance between ground and the Intake Swirl Servo Motor Control circuit in the Intake Swirl Servo Motor harness connector.
Is the resistance below 1000 ohms?
Yes
- Repair the Intake Swirl Servo Motor Control circuit for a short to ground.
- Perform the ECM Verification Test Ver. 1. Verification Tests
No
- Go to 3
3. INTAKE SWIRL SERVO MOTOR CONTROL CIRCUIT OPEN OR HIGH RESISTANCE
Measure the resistance of the Intake Swirl Servo Motor Control circuit between the Intake Swirl Servo Motor harness connector and the Engine Control Module (ECM) harness connector.
Is the resistance below 10.0 ohms?
Yes
- Go to 4
No
- Repair the Intake Swirl Servo Motor Control circuit for an open circuit or high resistance.
- Perform the ECM Verification Test Ver. 1. Verification Tests
4. INTAKE SWIRL SERVO MOTOR
Connect the Engine Control Module (ECM) harness connector.
Turn the ignition on.
With the scan tool, actuate the Intake Swirl Servo Motor (Swirl Actuator) to 100%.
Using a 12 volt test light connected to 12 volts, check the Intake Swirl Servo Motor Control circuit in the Swirl Solenoid harness connector.
NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
NOTE: The circuit will remain actuated by the controller for 30 seconds. Be certain the actuation is active when checking the circuit.
With the scan tool, actuate the Intake Swirl Servo Motor (Swirl Actuator) to 0%.
Using a 12 volt test light connected to 12 volts, check the Intake Swirl Servo Motor Control circuit in the Swirl Solenoid harness connector.
NOTE: The test light should not be illuminated.
NOTE: The circuit will remain actuated by the controller for 30 seconds. Be certain the actuation is active when checking the circuit.
Is the test light illuminated and bright with the actuation at 100% and not illuminated with the actuation at 0%?
Yes
- Replace the Intake Swirl Servo Motor.
- Perform the ECM Verification Test Ver. 1.Verification Tests
No
- Go to 5
5. ENGINE CONTROL MODULE (ECM)
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Intake Swirl Servo Motor and the Engine Control Module (ECM).
Look for any chafed, pierced, pinched, or partially broken wires.
Look for broken, bent, pushed out or corroded terminals.
Search for any Technical Service Bulletins that may apply.
Were any problems found?
Yes
- Repair as necessary.
- Perform the ECM Verification Test Ver. 1. Verification Tests
No
- Replace the Engine Control Module (ECM).
- Perform the ECM Verification Test Ver. 1. Verification Tests