P2016-INTAKE MANIFOLD RUNNER (SWIRL) POSITION SENSOR CIRCUIT LOW - BANK 1

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The Intake Swirl Valve is located under the Intake Manifold. The Intake Swirl Valve is supplied 12 Volts by the ASD circuit and has a dedicated ground. It is controlled using a Pulse Width Modulated (PWM) circuit by the Powertrain Control Module (PCM). The Intake Swirl Valve has an internal position sensor that is monitored by the PCM over the (N119) Intake Swirl Valve Signal circuit. The Intake Swirl Valve is used to create turbulence in the air entering the combustion chamber which helps to reduce emissions.

When Monitored:
With the ignition on and the Intake Swirl Valve commanded on.
Set Condition:
The Powertrain Control Module (PCM) detects that the (N119) Intake Swirl Valve Signal circuit voltage is low for 0.5 second.

Possible Causes
(N119) INTAKE SWIRL VALVE SIGNAL CIRCUIT SHORTED TO GROUND
(N119) INTAKE SWIRL VALVE SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
INTAKE SWIRL VALVE
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

1. CHECK FOR ACTIVE DTC

1.	Turn the ignition on.

2.	Using the scan tool, erase PCM DTCs.

3.	Perform several ignition cycles, turning the ignition off for at least 10 seconds between each ignition cycle.

4.	Using the scan tool, actuate the Intake Swirl Valve.

5.	Monitor the scan tool for PCM DTCs.

Did this DTC return?

Yes

Go To 2

Perform the INTERMITTENT DTC diagnostic procedure. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure)

2. CHECK THE (N119) INTAKE SWIRL VALVE SIGNAL CIRCUIT SHORT TO GROUND

1.	Turn the ignition off.

2.	Disconnect the Intake Swirl Valve harness connector.

3.	Disconnect the PCM C1 harness connector.

4.	Measure the resistance between ground and the (N119) Intake Swirl Valve Signal circuit at the Intake Swirl Valve harness connector.

Is the resistance above 10k Ohms?

Yes

Go To 3

Repair the (N119) Intake Swirl Valve Signal circuit for a short to ground.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

3. CHECK THE (N119) INTAKE SWIRL VALVE SIGNAL CIRCUIT FOR AN OPEN/HIGH RESISTANCE

2.	Measure the resistance of the (N119) Intake Swirl Valve Signal circuit between the Intake Swirl Valve harness connector and the PCM C1 harness connector.

Is the resistance below 5.0 Ohms?

Yes

Go To 4

Repair the (N119) Intake Swirl Valve Signal Signal circuit for an open or high resistance.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

4. INTAKE SWIRL VALVE

1.	Reconnect the Intake Swirl Valve harness connector.

2.	Reconnect the PCM C1 harness connector.

3.	Turn the ignition on.

4.	Using the scan tool, erase PCM DTCs.

5.	Turn the ignition off.

6.	Disconnect the Intake Swirl Valve harness connector.

7.	Turn the ignition on.

8.	Using the scan tool, view PCM DTCs.

Did the P2017- INTAKE MANIFOLD RUNNER (SWIRL) POSITION SENSOR CIRCUIT HIGH DTC set as active with the Intake Swirl Valve harness connector unplugged?

Yes

Replace the Intake Swirl Valve in accordance with the service information.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

Replace and program the Powertrain Control Module in accordance with the service information.
Perform the PCM VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure).

P2016-INTAKE MANIFOLD RUNNER (SWIRL) POSITION SENSOR CIRCUIT LOW - BANK 1

Theory of Operation

Possible Causes