SPECIFICATIONS
| Item | Specification |
|---|---|
| Exhaust gas recirculation (EGR) valve | |
| Make | Denso |
| Type | 2W93-9E456-BB |
GENERAL SPECIFICATIONS
| Description | Nm |
|---|---|
| Positive crankcase ventilation (PCV) valve bolts | 10 |
| Exhaust gas recirculation (EGR) valve bolts | 10 |
TORQUE SPECIFICATIONS
Scheme 5
| Item | Part Number | Description |
|---|---|---|
| 1 | Full load tube | |
| 2 | Pressure Control Valve (PCV) | |
| 3 | Part load tube | |
| 4 | EGR tube | |
| 5 | EGR valve | |
| 6 | Electric throttle |
The exhaust gas recirculation (EGR) system is controlled by a PWM signal from the engine control module (ECM). The system comprises an EGR valve and a gas transfer pipe.
Scheme 6
The EGR valve is a 4 pole 60 point stepper motor with an integral cooler unit which is mounted on the side of the induction elbow. The EGR valve receive four 12 Volt signals from the ECM. The EGR valve is cooled by the return coolant flow from the electric throttle.
The EGR valve is connected to the LH exhaust manifold via the gas transfer pipe.
CRANKCASE VENTILATION
The V8 engine is ventilated through a part load and a full load breather.
The part load breather is a flexible composite hose connected between the positive crankcase ventilation (PCV) valve mounted above the oil separator in the bank A camshaft cover and the induction elbow. The PCV valve prevents reverse flow into the crankcase.
Scheme 7
The full load breather is a flexible hose connected between the oil separator in the bank B camshaft cover and the air intake duct.
The ends of the breather hoses incorporate quick release connectors.
The oil separators consist of wire gauze packed into an open ended enclosure below the breather outlet.
OVERVIEW
For information on the operation of the emissions systems, refer to relevant service information.
INSPECTION AND VERIFICATION
- Verify the customer concern.
- Visually inspect for obvious mechanical faults. VISUAL INSPECTION Mechanical Electrical Exhaust gas recirculation (EGR) pipes Breather hoses Positive crankcase ventilation valve Fuel level Fuel contamination/grade/quality Throttle body Fuse 5 of the battery junction box Loose or corroded electrical connectors Exhaust gas recirculation (EGR) valve Engine control module (ECM)
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- Use the approved diagnostic system or a scan tool to retrieve any diagnostic trouble codes (DTCs) before moving onto the symptom chart or DTC index. Make sure that all DTCs are cleared following rectification.
SYMPTOM CHART
Note. For a more comprehensive symptom chart, refer to Electronic Engine Controls - V8 4.4L Petrol .
| Symptom | Possible cause | Action |
|---|---|---|
| Difficult to start cold | Battery Crankshaft position (CKP) sensor Exhaust gas recirculation (EGR) valve stuck open Fuel system Evaporative emissions purge valve | For battery information, CKP sensor tests, fuel system and purge valve tests, refer to relevant service information. Check the EGR valve. Refer to the guided diagnostic routine on the approved diagnostic system. |
| Engine stalls soon after start | Breather system disconnected/restricted ECM relay MAF sensor Ignition system Air filter restricted Air leakage Fuel lines | Check the engine breather hoses, PCV, etc. Check the ECM relay operation. For MAF sensor, ignition system tests, air intake information and fuel line information, refer to relevant service information. |
| Poor throttle response | APP sensor malfunction TP sensors ECT sensor MAF sensor Transmission malfunction Traction control event Air leakage Breather system disconnected/restricted | For APP, TP, ECT, MAF sensor tests, intake system checks and transmission information, refer to relevant service information. Check the breather system hoses, PCV, etc. |
DTC INDEX
Note. 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 - V8 4.4L Petrol .
| DTC | Description | Possible cause | Action |
|---|---|---|---|
| P040100 | Exhaust Gas Recirculation A Flow Insufficient Detected | EGR pipe blocked EGR valve incorrectly installed or loose EGR valve stuck closed/blocked EGR valve failure | Check the EGR pipes. Check the EGR valve installation, refer to relevant service information. Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
| P048900 | Exhaust Gas Recirculation Control Circuit Low | EGR valve power supply circuit high resistance EGR valve power supply circuit: short circuit to ground | Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
| P049000 | Exhaust Gas Recirculation Control Circuit High | EGR valve drive circuit short circuit to power | Refer to the guided diagnostic routine for this code on the approved diagnostic system. |
Scheme 8
- Disconnect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
- Remove the engine cover. For additional information, refer to: «ENGINE COVER V8 4.4L PETROL»(/land-rover/range-rover-sport/i-2005-2009/remont/exteriorinterior-trim/#interior-trim-and-omamentation) .
- Remove the PCV valve. Disconnect the PCV hose. Remove the 2 bolts. Release the PCV valve.
INSTALLATION
- To install, reverse the removal procedure. Clean the components. Lubricate the seal with clean engine oil. Tighten the bolts to 10 Nm (7 lb.ft).
Scheme 9
- Disconnect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
- Disconnect the EGR valve electrical connector.
- Release the clips and disconnect the hoses from the EGR valve cooler. Position an absorbent cloth to collect fluid spillage. Clamp the EGR coolant hoses to minimize coolant loss.
- Remove the EGR valve. Remove the 2 bolts from the EGR cooler valve body.
- To install, reverse the removal procedure. Clean the component mating faces. Tighten the bolts to 10 Nm (7 lb.ft).
- Connect the battery ground cable. For additional information, refer to: «SPECIFICATIONS»(/land-rover/range-rover-sport/i-2005-2009/remont/charging-system/#battery-and-charging-system-general-information__specifications) .
- Check and top up the coolant.
- If required, carry out a long drive cycle. For additional information, refer to: «Powertrain Control Module (PCM) Long Drive Cycle Self-Test»(/land-rover/range-rover-sport/i-2005-2009/remont/engine-control-systems/#electronic-engine-controls-v8-44l-petrol__powertrain-control-module-pcm-long-drive) .