Mihanicos

The skid control ecu is normally connected to the instrument cluster via CAN and multiplex communications. If the VSC is off, the indicator light will come on. Check the communication system, the multiplex communication system, the ecu connector, the VSC switch and the harness connection between the skid control ecu and the VSC switch. Battery voltage should not fall below 10 v. For the ABS light to stay ON, the skid control ecu connectors are disconnected from the skid control ecu. A malfunction of the ecu control. An open circuit in the harness between the instrument panel and the skid control ecu. To locate and identify the fault, you need the techstream to perform various tests and measurement and to retrieve all the codes. The freeze frame is a great help and it will guide you with additional codes pertaining to the time before and during the fault occurrence. Chris.

Remove the valve cover of each cylinder head and turn the engine by hand from the crankshaft pulley. Look at the camshafts as they turn and observe the valve operation and look for any damage. Check and verify the engine timing. Reset it if it is out and then do a compression test on all cylinders to evaluate the condition of the engine. Chris.

If you have an engine timing belt, the timing marks of the camshafts should be visible when you remove the timing belt cover. Chris

If I knew the model code of your car I could tell you exactly the engine timing option. Timing chains are much more reliable and they can last until the engine's overhaul. It is very unlikely for them to jump teeth on the camshafts, unless a design fault of the tensioner or the vibration dampers of the chain exists. However this would have been recalled early and an upgrade kit would fix it. The engine timing can be checked by aligning the TDC mark on the crankshaft and the timing marks on the camshafts. TDC mark is on the engine pulley, the camshaft marks are visible by removing the valve cover. If they do not align, all it is required is to release the chain/belt tensioner and reset the timing marks. Any engine can be checked for its condition by a compression test ( petrol engines ) and a leakage test for diesel engines. Compression test is very easy and it is done by removing the spark plugs. Any mechanic can do it before buying the engine. Usually the breaker would tell you the condition of the engine and the mileage it has done. If the compression test readings are high and similar ( depends on the engine design compression ratio ) then the engine should be good to run for many miles. Choose a trustworthy and reputable mechanic. Chris.

P0 430 is the bank 2 catalyst below threshold level. this has nothing to do with what has happened to the engine. I think your car has a timing belt and not a timing chain. Nevertheless, the fact that the engine starts even for about a second before it cuts out, it means that it turns and no valves have ceased or jammed. Some engines have their engine timing without valve interference in which case if the timing belt or chain should jump a tooth or snap, the pistons do not hit the valves during their operation. An interference engine timing, in case the timing belt or chain snap or jump, would have at least a piston hit the valves of a cylinder with a catastrophic damage to the engine, belt valves, piston with a hole from hitting the valves, connecting rod bent etc. If the engine has jumped a tooth or more and it is out of timing, you may be lucky by a long shot and you may only need to set the engine timing. The fact that the compression of some cylinders is low or gone altogether, it is engine timing related. Check the engine timing using the marks on the crankshaft pulley and the camshafts. I would have expected the garage to mention if the engine timing belt or chain had jumped out of timing. The other option is to get a replacement engine from a breaker. A few months ago I was quoted about 430 pounds for a Lexus LS 430 with a guarantee as well. Hope to have been of some help, Chris.

TRW is a Swiss company and their products are comporable to the original in all aspects. If the steering geometry is now correct, I doubt if the stiffness of the new ball joints would make any difference the effort to steer the car. Check the tyre pressures, change the power steering fluid and check the tension on the belt, if you have hydraulic power steering. Chris.

You may have a short in a speaker circuit, most likely in the rear. The amplifier stops operating to prevent damage. The navigation system may not function either. Check the speaker circuits, rear. MOST line, MOST communication line connector, wire harness and connector, radio receiver, display and navigation module and stereo amplifier. Look at the freeze frame data and you should find more codes which identify the fault. For each further code there are tests to locate the fault. Chris.

This trouble code indicates too much air or not enough fuel to the engine for a stoichiometric combustion. Check and clean the Mass Air Flow sensor. Check that the air induction system from the Mass Air Flow sensor and beyond is intact and does not suck any air in. Check all ventilation hoses and ventilation valve for any damage. Check A/F sensors of bank 2 and their heater and relay circuits. Check engine coolant tempetature sensor. Check for any gas leakage from the exhaust system. If the above checks do not reveal the cause of the fault, check the fuel injectors for any blockage and spray pattern. Check the fuel pressure as well. Start from the easy checks first. Chris.

When did the car develop this fault? Has it had any accident repair, minor or major afterwards? Has it had any maintenance or repair about that time? Check where mechanics and body panel workers have been. Most of them leave their mark behind. Check for harness and cable damage, short circuits to ground or between individual wires. Follow the voltage drop method accross the fuses, put forward by another learned member. For circuit diagrams you can get from Lexus-tech.eu or from other repair manuals on ebay. You can print anything within the time you have bought access for, it is about 5 Euro an hour if my memory serves me right. Finding faults like your car's is a very tedious and time consuming process. You need patience and perseverance. I will be very happy to help in any way I can. Chris.

Once you have established which fuse draws current, you need the car's circuit diagram to sectionalise the circuit in order to locate the fault. Toyota/ Lexus circuit diagrams include all the circuit connectors and their location in the car. Any battery has a nominal capacity in Ampere hours. Theoretically a battery will go flat when the product of the the current times the time of the current outflow [ in hours ], equals the charge level of the said battery. Your car may have a 60 Ampere hour battery when fully charged. Check that the alternator and the rectifier are in good order. Also check the battery condition. Chris.

Regretfully I cannot find anywhere in the circuit diagrams the information you want no matter where I looked and under which heading. The wiring from the hybrid control ecu to the oil pump motor controller is shown clearly with the connector numbers and the pins. The oil pump motor controller should have the terminals marked on it. From the circuit diagram W,U,V is the three phase supply to the motor. The other option is to look at another oil pump and verify the connections. Chris.

Attached here are the pin connections. Chris

Whenever the transmission oil is fully drained, only about half is drained out. Lexus specifies transmission fluid change in specified mileage or time whichever comes first, for each of their models. This does include " sealed for life transmissions ". To confirm log in to Lexus-tech.eu and look up the maintenance schedule of your car. Watch the video on Youtube by John Kadogan, an austrlalian qualified mechanical engineer, on automatic transmission fluid's life expectancy according to the fluid's operating temperature. If I remember correctly, it is reduced by 30% for every 20 degrees above normal operating temperatute. Changing the transmission fluid never causes any problems. The problems arise when the correct procedure is not observed. Chris.

From Megazip and Japan Spares web sites you can find spare parts for your car and their original part Nos. The identification tag on your car's passenger side pillar has all the data to help you find your model in their web sites. Chris.

Megazip parts have the parts you need with their part numbers. Also try Japan Spares ( jp.com). Lock in to their web sites and find your car from the data on the identification tag on the passenger's side pillar. Chris

Attached herewith, please find the relevant circuit diagrams. Chris.

Check the auxiliary battery condition. Look at the battery voltage recorded at the freeze frame. If the voltage falls to 10v, you do get the warnings displayed. Chris.

I quoted the method recommended by Lexus. The line pressure code is stressed all the way in the procedure to check the oil level, addition of transmission fluid and fluid replacement. Fluid circulation is also imperative for all above operations. My apologies for the somehow detailed write up, I had no idea of your backround. I am an electrical engineer and maintaining and repairing my cars is my hobby. Please keep us updated and I will help in any way I can to find the fault. Chris.

Always remove the safety plug from the boot and wait 10 minutes before you do any work, give time to the capacitors to discharge. Observe all safety rules in case you accidentally touch any high voltage cables, terminals, pins etc. P 2797 refers to the auxiliary transmission oil pump driver. You need to read the freeze frame data where the first thing to check is the voltage value to the driver circuit which should be no less than 10 volts. From the freeze frame data, you should be able to read further codes, ie 865 and 895. If you get 895 together with 865, check the voltage of the oil pump motor driver circuit [ Not less than 10v ] . P 2797 865 refers to the oil pump control performance. the problem may be with the ecu, the oil pump motor controller, the oil pump motor assembly, or the harness. First switch the car off and disconnect all connectors from the auxiliary pump. The measured voltage from all terminals on the connectors should be less than 1v. If you terminals U, V and W are marked on the pump, the measured resistance value between W-U and W-V should less than 1 Ohm. Then measure the insulation resistance of each pin on the pump with a multimeter and it should be more than 10 K ohms. Since you have replaced the pump and the diver, by the process of elimination, assuming the new parts are ok, the problem may be with the harness, the connectors, the conditions of their pins and anything that inhibits good conductivity of all common contacts. Make certain that the ground connection to the gear box and the pump is good and has no contact resistance. It is of paramount importance to have a good ground especially on cars with electronics everywhere. Disconnect both auxiliary battery terminals and measure the resistance from the battery ground terminal to the auxiliary oil pump. You should get nearly zero on the multimeter and not more than i Ohm. The oil level in the transmission should be at the correct level. To check, add oil by removing the hose on the transmission to the oil cooler which is higher than the other hose from the cooler. Normally you add about half a litre more the amount you drained. Circulate the oil with engine running and go through the gears one by one making a stop of about 5 seconds at least at each gear. Do this twice. With the engine running, observe the fluid temperature. Drain between 30C and 40C, preferably 35C. Make certain you have no line pressure code. If you have, add another half litre of oil and repeat the process until the line pressure code is eliminated. Chris. Chris.

Check the state of charge of the 12v battery. Also check the condition of the 12v battery. If the 12v battery falls below 11v when the car is on, it displays all kinds of irrelevant codes and faults. Chris.

Drill a hole at the bottom of the filter so the oil is drained. Heat the filter well enough with a propelene flame and then use a chisel to tap it free. Repeat the process until it breaks free. Chris

You can get it from their website, " emanualonline.com " . Select the car and the model you want and you can download it. When I bought mine I had the option to get it on a CD, which is better. These are traditional repair manuals with drawings and detailed instructions how to disassemble and re assemble every item on the car. Precise dimensions, clearances and wear limits of the various components and parts will help you to decide which parts to replace when repairing or overhauling equipment. You will not find any appendices relating to codes and how to proceed from there to diagnose and repair the part which causes the display of the code in question. Such repair manuals you can get from Lexus available on CD or by registering with Lexus-tech.eu where you have access to their repair manuals for a small fee, according to the duration of the access. You can also download anything during your access. From ebay you can get the same repair manual as the original from Lexus on a CD from a company in America for a fraction of the original manual. I recommend them without any reservation. On the internet, you can find testimonials about their manuals. Chris.

I have the emanuals for a Toyota Avensis 2005, it covers all variants, engines, and models for all market destinations. Very thorough, covers all sections, I fully recommend it. Chris.

Have a look under the car. The high voltage orange cables from the traction battery run under the car to the converter inverter. They may have been damaged. Chris.

P0AA6 -526 to 614 all refer to hybrid battery high voltage circuit electrical insulation. If you intend to trouble shoot this problem, wrap the tools with electrical tape. Wait 10 minutes after you disconnect the service plug. Wear electrician'd gloves. If you have only P0AA6 access the freeze frame data to read the subsequent code to P0AA6 to locate the fault area: 526, high voltage circuit. 526 612, air conditioner 526 613, transmission area 526 614, high voltage output area. You may have to use a 500v Megohm insulation tester to locate the fault. Before doing so, make absolutely certain that you verify beyond any doubt each and every single wire and that both its ends are completely isolated with a visible air gap. Failing to do so you may apply 500v to wires connected to electronic equipment and this will result in blowing off the relevant circuit. Under the circumstances, I would suggest you fully dry all areas where water has collected and cure the cause of it. It should suffice to clear the fault. Chris.