For information on the fuel system description and operation: REFER to: Fuel Tank and Lines (310-01D Fuel Tank and Lines - TDV8 3.6L Diesel, Description and Operation).
Make sure that all suitable safety precautions are observed when carrying out any work on the fuel system. Failure to observe this warning may result in personal injury.
Make sure that absolute cleanliness is observed when working with these components. Always install blanking plugs to any open orifices or lines. Failure to follow this instruction may result in damage to the vehicle.
Visual Inspection
| Mechanical | Electrical |
|---|---|
|
|
| Symptom | Possible causes | Action |
|---|---|---|
| Engine cranks, but does not start |
| Check that the ISF switch has not tripped. Check the fuel level and condition. Draw off approximately 1 ltr (2.11 pints) of fuel and allow to stand for 1 minute. Check to make sure there is no separation of the fuel indicating water or other liquid in the fuel. Check the intake air system for leaks. Check for DTCs. Check the lift pump operation, check the low-pressure fuel system for leaks/damage. Check the fuel filter, check the fuel volume and pressure control valves and circuits. Refer to the electrical guides. Check the fuel pump: REFER to: Fuel Charging and Controls (303-04D Fuel Charging and Controls - TDV8 3.6L Diesel, Diagnosis and Testing). Check the CKP sensor circuits. Refer to the electrical guides. |
| Difficult to start |
| Check the glow plug circuits: REFER to: Glow Plug System (303-07D Glow Plug System - TDV8 3.6L Diesel, Diagnosis and Testing). Check the fuel level and condition. Draw off approximately 1 ltr (2.11 pints) of fuel and allow to stand for 1 minute. Check to make sure there is no separation of the fuel indicating water or other liquid in the fuel. Check the intake air system for leaks: REFER to: Intake Air Distribution and Filtering (303-12D Intake Air Distribution and Filtering - TDV8 3.6L Diesel, Diagnosis and Testing). Check for DTCs. Check the lift pump operation, check the low-pressure fuel system for leaks/damage. Check the fuel filter, check the fuel volume and pressure control valves and circuits. Refer to the electrical guides. For EGR valve checks: REFER to: Engine Emission Control (303-08D Engine Emission Control - TDV8 3.6L Diesel, Diagnosis and Testing). |
| Rough idle |
| Check the intake air system for leaks: REFER to: Intake Air Distribution and Filtering (303-12D Intake Air Distribution and Filtering - TDV8 3.6L Diesel, Diagnosis and Testing). Check the fuel level and condition. Draw off approximately 1 ltr (2.11 pints) of fuel and allow to stand for 1 minute. Check to make sure there is no separation of the fuel indicating water or other liquid in the fuel. Check for DTCs. Check the low-pressure fuel system for leaks/damage. Check the fuel filter, check the fuel volume and pressure control valves and circuits. Refer to the electrical guides. For EGR valve checks: REFER to: Engine Emission Control (303-08D Engine Emission Control - TDV8 3.6L Diesel, Diagnosis and Testing). |
| Lack of power when accelerating |
| Check the intake air system: REFER to: Intake Air Distribution and Filtering (303-12D Intake Air Distribution and Filtering - TDV8 3.6L Diesel, Diagnosis and Testing). Check for a blockage/restriction in the exhaust system, install new components as necessary: REFER to: Engine Emission Control (303-08D Engine Emission Control - TDV8 3.6L Diesel, Diagnosis and Testing). Check the fuel pressure: REFER to: Fuel Charging and Controls (303-04D Fuel Charging and Controls - TDV8 3.6L Diesel, Diagnosis and Testing). For EGR valve tests: REFER to: Engine Emission Control (303-08D Engine Emission Control - TDV8 3.6L Diesel, Diagnosis and Testing). For turbocharger actuator checks: REFER to: Turbocharger (303-04F Fuel Charging and Controls - Turbocharger - TDV8 3.6L Diesel, Diagnosis and Testing). |
| Engine stops/stalls |
| Check the intake air system for leaks, REFER to: Intake Air Distribution and Filtering (303-12D Intake Air Distribution and Filtering - TDV8 3.6L Diesel, Diagnosis and Testing). Check the fuel level and condition. Draw off approximately 1 ltr (2.11 pints) of fuel and allow to stand for 1 minute. Check to make sure there is no separation of the fuel indicating water or other liquid in the fuel. Check the fuel system for leaks/damage. Check the fuel volume and pressure control valves and circuits. Refer to the electrical guides. For EGR valve checks: REFER to: Engine Emission Control (303-08D Engine Emission Control - TDV8 3.6L Diesel, Diagnosis and Testing). |
| Engine judders |
| Check the fuel level and condition. Draw off approximately 1 ltr (2.11 pints) of fuel and allow to stand for 1 minute. Check to make sure there is no separation of the fuel indicating water or other liquid in the fuel. Check the intake air system for leaks: REFER to: Intake Air Distribution and Filtering (303-12D Intake Air Distribution and Filtering - TDV8 3.6L Diesel, Diagnosis and Testing). Check the low-pressure fuel system for leaks/damage. Check the high-pressure fuel system for leaks, check the fuel volume and pressure control valves and circuits. Refer to the electrical guides. Check the fuel pump: REFER to: Fuel Charging and Controls (303-04D Fuel Charging and Controls - TDV8 3.6L Diesel, Diagnosis and Testing). |
| Excessive fuel consumption |
| Check the low-pressure fuel system for leaks/damage. Check the fuel volume and pressure control valves and circuits. Refer to the electrical guides. Check the fuel temperature sensor, fuel pump, etc for leaks. Check for DTCs indicating injector fault(s). For EGR valve checks: REFER to: Engine Emission Control (303-08D Engine Emission Control - TDV8 3.6L Diesel, Diagnosis and Testing). |
Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).
For a full list of ECM DTCs: REFER to: Electronic Engine Controls (303-14 Electronic Engine Controls - 3.6L (TdV8) Diesel, Diagnosis and Testing).
| DTC | Description | Possible causes | Action |
|---|---|---|---|
| P008700 | Fuel rail/system pressure too low |
| Refer to the electrical guides and check the FRP sensor circuits. For FRP sensor tests, refer to the relevant workshop manual section. Check the low pressure fuel lines for damage or restrictions. Check the fuel pressure. Check the low pressure fuel pump module circuits and operation. Check for fuel rail and high pressure fuel line leaks. Check for VCV and PCV DTCs and rectify as necessary. |
| P008800 | Fuel rail/system pressure too high |
| Check the FRP sensor circuits. Refer to the electrical guides. For FRP sensor tests, refer to the relevant workshop manual section. Check the fuel lines, check the fuel pressure and the fuel pump module circuits. |
| P062712 | Fuel Pump A Control Circuit / Open |
| Check the fuel pump and circuits. Refer to the electrical guides. Activate the relay and listen for an audible 'click'. Refer to the relevant workshop manual section. Repair/renew as necessary. Clear the DTCs and test for normal operation. |
| P062811 | Fuel Pump A Control Circuit Low |
| Check the fuel pump and circuits. Refer to the electrical guides. Activate the relay and listen for an audible 'click'. Repair/renew as necessary. Clear the DTCs and test for normal operation. |
| P062913 | Fuel Pump A Control Circuit High |
| Check the fuel pump and circuits. Refer to the electrical guides. Activate the relay and listen for an audible 'click'. Repair/renew as necessary. Clear the DTCs and test for normal operation. |
| P115A68 | Low Fuel Level - Forced Limited Power |
| Check that there is sufficient fuel in the tank. Check the fuel level sensor and circuits. Refer to the electrical guides. If no fault is found in the circuits, install a new fuel level sensor. Clear the DTCs and test for normal operation. |
| P115B68 | Low Fuel Level - Forced Engine Shutdown |
| Check that there is sufficient fuel in the tank. Check the fuel level sensor and circuits. Refer to the electrical guides. If no fault is found in the circuits, install a new fuel level sensor. Clear the DTCs and test for normal operation. |
| P213F07 | Fuel Injection System Fault Forced Engine Shutdown |
| Check for associated DTCs and Repair/renew as necessary. If this DTC resets, contact the technical help desk. |
| P226413 | Water in Fuel Sensor Circuit |
| Check the sensor and circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation. |
| P226532 | Water in Fuel Sensor Circuit Range/Performance |
| Check the sensor and circuits. Refer to the electrical guides. Repair/renew as necessary. Clear the DTCs and test for normal operation. |
| P226533 | Water in Fuel Sensor Circuit Range/Performance |
| Check the sensor and circuits. Refer to the electrical guides. Rectify as necessary. Clear the DTCs and test for normal operation. |
| P226611 | Water in Fuel Sensor Circuit Low |
| Check the sensor and circuits. Refer to the electrical guides. Rectify as necessary. Clear the DTCs and test for normal operation. |
| P226968 | Water in Fuel Condition |
| Drain the water from the fuel filter. Clear the DTC and retest. If the DTC resets, check the sensor circuit. Refer to the electrical guides. If no fault is found in the circuits, install a new sensor. |
| P229000 | Injector Control Pressure Too Low |
| There are different approaches to this depending on whether or not the vehicle runs. If the vehicle does not run: remove the lift pump fuse (fuse 1E of the engine compartment junction box). Disconnect the volume control valve connector from the rear of the injection pump. Disconnect the fuel spill lines and direct into a suitable container through a length of clear pipe. Crank the engine to at least 250 rpm for a minimum of 15 seconds. The pump spill flow should be at least 160 ml/min. If the spill flow is greater than this, install a new injection pump. REFER to: Fuel Pump (303-04D Fuel Charging and Controls - TDV8 3.6L Diesel, Removal and Installation). Clear the DTCs and test for normal operation. If the spill flow is less than 160 ml/min, carry out the low-pressure bleeding procedure.
REFER to: Low-Pressure Fuel System Bleeding - TDV6 2.7L Diesel (310-00 Fuel System - General Information, General Procedures). Recheck the spill flow, if it is still less than 160 ml/min, install a new fuel pump. REFER to: Fuel Pump (303-04D Fuel Charging and Controls - TDV8 3.6L Diesel, Removal and Installation). Clear the DTCs and test for normal operation. If the vehicle does run, install a new fuel filter and run the engine at 3,000 rpm for 3 minutes. During this, monitor the fuel pressure using a data logger function. If there is an airlock in the pump, the fuel pressure will be low and unstable, but a high-speed run should clear this. If the fault does not clear, check the low-pressure system to the injection pump. Insert a length of clear pipe into the fuel line and check
for a steady flow of fuel with no air bubbles. If the low-pressure system checks out, disconnect the fuel injector electrical connectors and check connections. Direct the lines into a suitable container and crank the engine. Compare the flow from the injectors and if there is one or more with low flow, install a new injector to that cylinder. REFER to: (303-04D Fuel Charging and Controls - TDV8 3.6L Diesel)
Left Fuel Injectors (Removal and Installation),
Right Fuel Injectors (Removal and Installation). Clear the DTCs and test for normal operation. If the fault does not clear, install a new injection pump.
REFER to: Fuel Pump (303-04D Fuel Charging and Controls - TDV8 3.6L Diesel, Removal and Installation). Clear the DTCs and test for normal operation. |