P2016-INTAKE MANIFOLD RUNNER POSITION SENSOR CIRCUIT LOW

For a complete wiring diagram Refer to Section 8W

When Monitored:
With the ignition on and battery voltage greater than 10.4 volts.
Set Condition:
The PCM detects that the MFV Position Sensor input voltage is below the minimum acceptable value.

Possible Causes

INTERMITTENT DTC

(K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND

(K602) MFV SIGNAL CIRCUIT SHORTED TO GROUND

(K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT

(K602) MFV SIGNAL CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT

(K857) 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE

(K602) MFV SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE

MANIFOLD FLOW VALVE

POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Diagnostic Test

1.DTC IS ACTIVE

NOTE: Diagnose and repair any system voltage or sensor reference voltage DTCs before continuing with this test.

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

Is the status Active for this DTC?

Yes

Go to 2

Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

2.(K857) 5 VOLT SUPPLY CIRCUIT VOLTAGE

Is the voltage above 4.5 volts?

Yes

Go to 6

Go to 3

3.(K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND

Is the resistance above 1000 ohms?

Yes

Go to 4

Repair the (K857) 5 Volt Supply circuit for a short to ground.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

4.(K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT

Is the resistance above 100 ohms?

Yes

Go to 5

Repair the (K857) 5 Volt Supply circuit for a short to the (K900) Sensor Ground circuit.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

5.(K857) 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE

Is the resistance below 5.0 ohms?

Yes

Go to 10

Repair the (K857) 5 Volt Supply circuit for an open circuit or high resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

6.(K602) MFV SIGNAL CIRCUIT SHORTED TO GROUND

Is the resistance above 100 ohms?

Yes

Go to 7

Repair the (K602) MFV Signal circuit for a short to ground.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

7.(K602) MFV SIGNAL CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT

Is the resistance above 100 ohms?

Yes

Go to 8

Repair the (K602) MFV Signal circuit for a short to the (K900) Sensor Ground circuit.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

8.(K602) MFV SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE

Is the resistance below 5.0 ohms?

Yes

Go to 9

Repair the (K602) MFV Signal circuit for an open circuit or high resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

9.MANIFOLD FLOW VALVE

Is the voltage above 4.5 volts with the jumper wire in place?

Yes

Replace the Manifold Flow Valve in accordance with the Service Information.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Go to 10

10.POWERTRAIN CONTROL MODULE (PCM)

Were any problems found?

Yes

Repair as necessary.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).