Lubrication System
| ITEM | DESCRIPTION |
|---|---|
| 1 | Oil pump outlet tube |
| 2 | Anti-drain valve |
| 3 | Oil cooler |
| 4 | Oil filter |
| 5 | Timing chain lubrication jets |
| 6 | Oil evacuation tube |
| 7 | Oil pump |
| 8 | Oil temperature and level sensor |
| 9 | Oil pick-up |
The oil pump is attached to the underside of the windage tray. The input shaft of the oil pump is driven from the front of the crankshaft, by the auxiliary chain, at 0.87 engine speed.
The oil pump draws oil from the sump pan through a centrally mounted pick-up pipe. The oil is pressurized and pumped through an output tube to the cylinder block. After passing through an anti-drain valve and a plate type oil cooler, the oil is filtered by a replaceable cartridge installed on the front of the RH cylinder head.
The output from the oil filter is distributed through oil galleries in the cylinder heads and cylinder block. All moving parts are lubricated by pressure or splash oil. Pressurized oil is also provided for the VCT system, the CPS system, the timing chain tensioners and the timing chain lubrication jets.
The oil returns to the oil pan under gravity. Large drain holes through the cylinder heads and cylinder block ensure the rapid return of the oil to the sump pan. System replenishment is through the oil filler cap on the LH cylinder head cover.
An oil evacuation tube is installed to allow oil to be drawn from the sump pan. The upper end of the oil evacuation tube is located under the oil filler cap.
An oil drain plug is installed in the RH side of the sump pan.
Oil Pump Nominal Operating Pressures
| ENGINE SPEED, REV/MIN | TEMPERATURE, °C (° F) | PRESSURE, BAR (LBF/IN) |
|---|---|---|
| Idle | 20 (68) | 2.0 (29.0) |
| 1500 | 20 (68) | 6.0 (87.0) |
| 3000 | 40 (104) | 6.2 (90.0) |
| 3000 | 110 (230) | 5.0 (72.5) |
| 3000 | 130 (266) | 4.0 (58.0) |
Oil Level Monitoring
Oil level monitoring is provided by an oil level and temperature sensor that measures the oil level in the sump pan. The oil level can be displayed in the message center of the instrument cluster.
Oil Level and Temperature Sensor
The oil level and temperature sensor supplies the ECM with a signal containing the level and temperature of the oil in the sump pan. The oil level and temperature sensor is secured to the bottom of the sump pan with three screws and sealed with a gasket.
The oil level and temperature sensor sends an ultrasonic pulse vertically upward and measures the time taken for the pulse to be reflected back from the top surface of the oil. This time is compared with the time taken for an ultrasonic pulse to travel a reference distance within the oil level and temperature sensor to determine the oil level. The oil level reading is combined with the oil temperature reading and transmitted in a PWM signal to the ECM.
Oil Level and Temperature Sensor Specifications
| FEATURE | DETAILS |
|---|---|
| Power source | Battery Voltage |
| Level Accuracy | ±2 mm (±0.08 in.) at temperatures of -30 °C (-22 °F)) and above; (±4 mm (±0.16 in.) at temperatures below -30 °C (-22 °F)) |
| Temperature Accuracy | ±2 °C (±3.6 °F) |
| Operating Level Range | 116 to 147 mm (4.57 to 5.79 in.) |
| Operating Temperature Range | -40 to 160 °C (-40 to 320 °F) |
Oil Level Check
Refer to: Capacities
For accuracy, oil level checks should be performed with the vehicle on level ground when the oil is hot. The vehicle needs to stand for approximately 10 minutes, after the engine is switched off, to allow the oil to drain back into the sump pan and the oil level to stabilize. The oil level system will not give a reading until the oil level has stabilized.
To check the oil level, make sure that the ignition is on, the engine stopped and the transmission is in P (park). Access the vehicle information and settings menu and select Service Menu , then Oil Level Display . An Engine Oil Level sight glass will be displayed in the instrument cluster message center. The current oil level will be displayed in the sight glass. One of the following messages will also be displayed:
- If the oil level is within acceptable limits, the message OK is displayed.
- If the oil level is less than acceptable, a message advising how much oil to add is displayed e.g. Add 0.5 Litre Refer to handbook for oil type or Add 0.5 Quart Refer to handbook for oil type (depending on the market), or Underfilled Refer to handbook for oil volume & type .
- If the message Over filled Refer to handbook is displayed, the oil level must be reduced to within acceptable limits before starting the engine again.
- If the message Not available is displayed, the oil level is still stabilizing. Wait 10 minutes and then recheck level.
Oil Level Display