Crank but no start

[Robert Roser]

Does anyone know if the 2Lt petrol engine in a 1999 Avensis has a camshaft sensor as well as a crankshaft sensor? I have tried everything to overcome a crank but no start. Checked fuel pump, coil packs, crank sensor is producing voltage, there is no movement on the Rev counter whilst cranking.

[flash22]

no rpm - cam or crank sensor, but could be another issue

do a paper clip test and read the flashes

place the link between CG and TC, turn on the ignition (do not crank/start), count the flashes, 2 digits with a pause in between each set of flashes

[Robert Roser]

Thanks Bob

paper clip test is reading 1299 which is overheated engine but this hasn’t started for months🥴 

I have tried most things but she just won’t have it, it all started when the Battery died, I am starting to wonder if it’s the ECU.

[Konrad C]

I assume by using the paper clip test, you have the earlier 3S-FE cambelt engine and pre facelift Avensis. The facelift came with the 1AZ-FSE direct injection. 
I would check the EFI fuse in the engine bay fuse box, but since you can get a reading, the fuse must be okay. My friend had crank but no start on his Avensis many years ago. He did notice that the EML light didn't illuminate when cranking. I suggested looking at the EFI fuse which my friend did, and the car started! 

There is a Haynes manual for the Avensis, but I can confirm there are a cam and crankshaft sensors. Getting access to the crankshaft sensor seems to a bit of work according to the Haynes manual!

[flash22]

What was the 2 digit code ?

P1299 will do it - a failed coolant temp sensor will cause a crank, no start as it will kill the spark and fuel

[flash22]

89422-35010

you should be able to check the resistance with a multimeter

[Robert Roser]

On 10/14/2022 at 5:05 PM, flash22 said:

no rpm - cam or crank sensor, but could be another issue

do a paper clip test and read the flashes

place the link between CG and TC, turn on the ignition (do not crank/start), count the flashes, 2 digits with a pause in between each set of flashes

 

[Robert Roser]

I have tested the cylinder head temperature sensor and that is working. I tried the paper clip test again to try to get a two digit code mentioned but the light kept flashing continuously so I left it for 30 mins in case it was programming the ECU but still no go, but the rev counter now stays on zero whilst cranking but when I turn the key off the rev counter jumps to around 200 revs then falls back very slowly.

[flash22]

Sorry for the delayed reply, not the correct thing to do but wang a crank sensor at it if you have no spark (crank sensor specs when cold (-10 to 50ºc) are 980 - 1600 ohms)

90919-05017

[Konrad C]

I will go through the some of the checks of crank no start I would do, in order of ease and expense. 

Check the ground straps around the engine bay and fuses. Remove a spark plug to confirm there is a spark, so checking the coil. Repeat with another spark plug to confirm, if no spark. If no spark at any spark plug then check ECU and wiring. Check other keys in to make sure the one in use has not failed. Is there a mobile phone mast recently installed in the area? In the past, transmission masts have known to disable car security electronics. 

If there is a spark, then check the fuel system. Is the fuel pump priming on the initial turn of the key? Is there enough good quality fuel? Is there a leak in the system? If the later 1AZ direct injection engine, is there enough pressure in the system? Is engine being flooded?

The engine condition - timing system belt/chain in good condition, plus compression good? Listen to the sound of the engine cranking.

Then it will be diagnostics, that has already been carried out. Are any of the sensors faulty? The worst thing is filling the parts cannon. 

Hopefully you already have some direct on where to find the fault.