Posted on by

Electronic Control System Gas Plus Engines – FAULT CODE 2184

Fuel Control Valve Hysteresis

Overview

CODE REASON EFFECT
Fault Code: 2184
PID: S018
SPN: 633
FMI: 11
LAMP: Amber
SRT: 

Fuel Control Valve Hysteresis

Possible reduced performance.

Fuel Control Valve Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The electronic control module (ECM) uses this valve to meter the fuel flow into the fuel housing.

Component Location

The fuel control valve is located in the fuel housing next to the gas mass flow sensor.

Shop Talk

This valve is normally closed when no power is applied. The valve is pulse-width modulated. Oil and debris can cause the valve to operate incorrectly. Drain the fuel filter and check the system for oil contamination.

Troubleshooting Steps

STEPS SPECIFICATIONS
STEP 1. Check the fault codes.  
  STEP 1A. Check for fault codes. Fault Code 455 or 511 active?
  STEP 1B. Check for an inactive fault code. Fault Code 2184 inactive?
STEP 2. Check the fuel control valve and circuit.  
  STEP 2A. Inspect the fuel control valve and connector pins. Dirty or damaged pins?
  STEP 2B. Check for an open circuit in the fuel control valve. 2 to 5 ohms?
  STEP 2C. Check for a short to ground in the fuel control valve. Greater than 100k ohms?
STEP 3. Check the ECM and engine harness.  
  STEP 3A. Inspect the ECM and engine harness connector pins. Dirty or damaged pins?
  STEP 3B. Check for a pin short circuit to ground. Greater than 100k ohms?
  STEP 3C. Check for a pin to pin short circuit in the engine harness. Greater than 100k ohms?
STEP 4. Check fuel system.  
  STEP 4A. Verify secondary fuel system. Is pressure correct for the engine family?
  STEP 4B. Check for a stuck open fuel control valve. Secondary fuel pressure drop within 50 seconds of key on?
STEP 5. Clear the fault codes.  
  STEP 5A. Disable the fault code. Fault Code 2184 inactive?
  STEP 5B. Clear the inactive fault codes. All fault codes cleared?

Guided Step 1 – Check the fault codes.

Guided Step 1A – Check for fault codes.

Conditions

  • Turn keyswitch ON
  • Connect INSITE™ electronic service tool.

Action

  • Use INSITE™ electronic service tool to read the fault codes.

Fault Code 455 or 511 active?
YES NO
No Repair No Repair
Fault Code 455 or 511

Guided Step 1B – Check for an inactive fault code.

Conditions

  • Turn keyswitch ON
  • Connect INSITE™ electronic service tool.

Action

  • Use INSITE™ electronic service tool to read the fault codes.

Fault Code 2184 inactive?
YES NO
No Repair No Repair
Procedure 019-362

Guided Step 2 – Check the fuel control valve and circuit.

Guided Step 2A – Inspect the fuel control valve and connector pins.

Conditions

  • Turn keyswitch OFF
  • Disconnect fuel control valve from the engine harness.

Action

  • Corroded pins
  • Bent or broken pins
  • Pushed back or expanded pins
  • Wire insulation damage
  • Moisture in or on the connector
  • Missing or damaged connector seals
  • Connector shell broken
  • Dirt or debris in or on the connector pins.

For general inspection techniques, refer to Components Connector and Pin Inspection, Procedure 019-361.

Dirty or damaged pins?
YES NO

A defective connection has been detected in the sensor or harness connection.

Repair the damaged pins. Replace the engine harness, whichever has the damaged pins.

  • Flush the dirt, debris, or moisture from the connector pins using electronic contact cleaner, Part Number 3824510.
  • Repair the engine harness. Refer to Procedure 019-204.
  • Replace the engine harness. Refer to Procedure 019-043.
  • Replace the heated oxygen sensor. Refer to Procedure 019-102.
 No Repair

Guided Step 2B – Check for an open circuit in the engine harness.

Conditions

  • Turn keyswitch ON
  • Disconnect the fuel control valve from the engine harness.

Action

  • Measure the resistance between the fuel control valve output pin and the fuel control valve RETURN pin at the fuel control valve connector.

Refer to the circuit diagram or wiring diagram for connector pin identification.

For general resistance measurement techniques, refer to Resistance Measurements Using a Multimeter and Wiring Diagram, Procedure 019-360

2 to 5 ohms?
YES NO
No Repair
  • Replace the fuel control valve. Refer to Procedure 019-102.
  • Use INSITE™ electronic service tool ti reset the fuel tables.

Guided Step 2C – Check for a short to ground in the fuel control valve.

Conditions

  • Turn keyswitch OFF
  • Disconnect the fuel control valve from the engine harness.

Action

  • Measure the resistance between the fuel control valve SUPPLY pin and at the fuel control valve connector.

Refer to the circuit diagram or wiring diagram for connector pin identification.

For general resistance measurement techniques, refer to Resistance Measurements Using a Multimeter and Wiring Diagram, Procedure 019-360

Greater than 100k ohms?
YES NO
No Repair
  • Replace the fuel control valve. Refer to Procedure 019-102.
  • Use INSITE™ electronic service tool ti reset the fuel tables.

Guided Step 3 – Check the ECM and engine harness.

Guided Step 3A – Inspect the ECM and engine harness connector pins.

Conditions

  • Turn keyswitch OFF
  • Disconnect engine harness connector 1 from the ECM.

Action

  • Corroded pins
  • Bent or broken pins
  • Pushed back or expanded pins
  • Wire insulation damage
  • Moisture in or on the connector
  • Missing or damaged connector seals
  • Connector shell broken
  • Dirt or debris in or on the connector pins.

For general inspection techniques, refer to Components Connector and Pin Inspection, Procedure 019-361.

Dirty or damaged pins?
YES NO

A defective connection has been detected in the ECM connector 1 or engine harness connector.

Repair the damaged pins. Replace the engine harness, whichever has the damaged pins.

  • Flush the dirt, debris, or moisture from the connector pins using electronic contact cleaner, Part Number 3824510.
  • Repair the engine harness. Refer to Procedure 019-204.
  • Replace the engine harness. Refer to Procedure 019-043.
No Repair

Guided Step 3B – Check for a pin short to ground.

Conditions

  • Turn keyswitch OFF
  • Disconnect the engine harness connector 1 from the ECM
  • Disconnect the fuel control valve from the engine harness.

Action

  • Measure the resistance between the fuel control valve output pin in the engine harness ECM connector 1 and ground.

Refer to the circuit diagram or wiring diagram for connector pin identification.

For general resistance measurement techniques, refer to Resistance Measurements Using a Multimeter and Wiring Diagram, Procedure 019-360

Greater than 100k ohms?
YES NO
No Repair

A pin to ground short circuit on the fuel control valve output line has been detected in the engine harness.

Repair the damaged pins. Replace the engine harness, whichever has the damaged pins.

  • Flush the dirt, debris, or moisture from the connector pins using electronic contact cleaner, Part Number 3824510.
  • Repair the engine harness. Refer to Procedure 019-204.
  • Replace the engine harness. Refer to Procedure 019-043.

Guided Step 3C – Check for a pin to pin short circuit in the engine harness.

Conditions

  • Turn keyswitch OFF
  • Disconnect the engine harness connector 1 and connector 2 from the ECM
  • Disconnect the fuel control valve from the engine harness.

Action

  • Measure the resistance between the fuel control valve SUPPLY pin in the engine harness ECM connector 1 and all other pins in the engine connector 1.
  • Measure the resistance between the fuel control valve SUPPLY pin in the engine harness ECM connector 1 and all other pins in the engine connector 2.

Refer to the circuit diagram or wiring diagram for connector pin identification.

For general resistance measurement techniques, refer to Resistance Measurements Using a Multimeter and Wiring Diagram, Procedure 019-360

Greater than 100k ohms?
YES NO
No Repair

A pin to pin short circuit on the fuel control valve supply line has been detected in the engine harness.

Repair the damaged pins. Replace the engine harness, whichever has the damaged pins.

  • Flush the dirt, debris, or moisture from the connector pins using electronic contact cleaner, Part Number 3824510.
  • Repair the engine harness. Refer to Procedure 019-204.
  • Replace the engine harness. Refer to Procedure 019-043.

Guided Step 4 – Check fuel system.

Guided Step 4A – Check the secondary fuel inlet pressure.

Conditions

  • Connect all components
  • Turn keyswitch OFF
  • Connect INSITE™ electronic service tool.

Action

  • Use INSITE™ electronic service tool to monitor the fuel pressure.
  • Secondary fuel pressures are different depending on engine platform. See below:

B Gas Plus – 414 kPa [60 psia]

B LPG Plus – 276 kPa [40 psia]

C Gas Plus – 517 kPa [75 psia]

Note: All pressure sensors on the Gas Plus engines are absolute pressure sensors.

Note: It might be necessary to perform a stall test to monitor dynamic secondary fuel pressure. If fuel pressure is not adequate, then the engine will surge under load possibly causing this fault to occur.

Refer to the Engine Performance Troubleshooting Tree in Section TT.

Is pressure correct for the engine family?
YES NO
No Repair

Refer to the Engine Performance Troubleshooting Tree in Section TT.

Guided Step 4B – Check for a stuck open fuel control valve.

Conditions

  • Turn keyswitch ON
  • Connect INSITE™ electronic service tool.

Action

  • Use INSITE™ electronic service tool to monitor the secondary fuel pressure while the keyswitch is on.

Note: If the fuel control valve is stuck open, raw fuel will be dumped into the engine and out the exhaust. This will cause the heated oxygen sensor to read a lower than actual air oxygen value.

Secondary fuel pressure drop within 50 seconds of key on?
YES NO

A defective fuel control valve has been detected.

Replace the fuel control valve. Refer o Procedure 019-102.

Use INSITE™ electronic service tool to reset the fuel tables.

 No Repair

Guided Step 5 – Clear the fault codes.

Guided Step 5A – Disable the fault code.

Conditions

  • Connect all components
  • Turn keyswitch ON
  • Connect INSITE™ electronic service tool.

Action

  • Start the engine and let it idle for one minute.
  • Use INSITE™ electronic service tool to verify that the fault code is inactive.

Fault Code 2184 inactive?
YES NO
No Repair No Repair

Guided Step 5B – Clear the inactive fault codes.

Conditions

  • Connect all components
  • Turn keyswitch ON
  • Connect INSITE™ electronic service tool.

Action

  • Use INSITE™ electronic service tool to erase the inactive fault codes.

All fault codes cleared?
YES NO
No Repair No Repair
Repair complete
Appropriate troubleshooting charts
Last Modified:  22-Sep-2004
Avatar photo

Published by Jack

Hello, I'm Jack, a diesel engine fan and a blogger. I write about how to fix and improve diesel engines, from cars to trucks to generators. I also review the newest models and innovations in the diesel market. If you are interested in learning more about diesel engines, check out my blog and leave your feedback.