I think i have got problems with the ECU. The Crankshaft sensor is getting no power from the ECU.
There is a pink and white wire from the plug on the crankshaft sensor got straight to the second plug on the ECU i have done a continuity test so no breaks in the wiring.
With the ignition switch on no power and also when the engine turns over still no power?
Is there a relay for this or is the power direct from the ECU?
Does this mean the ECU is damaged? As the AA could not get a reading from it as he could not communicate with it.
First of all Welcome.
Just because the AA can't communicate with the ECU doesn't mean it's NBG. More likely no supply.
The Crank sensor doesn't require power, in fact it Generates it (in a fashion) Sending pulses as the engine rotates.
More likely, is the wiring between engine & Nearside wing. On Another forum I frequent, the loom itself was found to be internally corroded. As you seemingly have no power.
Check the Connections & fuses on the battery.
Check loom N/S wing for damage / corrosion.
Check all the fuses, under N/s cupholder & N/S wing area if present (don't know the older Tragics that well).
With a multimeter, check for +12 on all RED cables.
As your other thread mentions running on easy start, it ain't that bad. Consider feeds to fuel pump (is it electric on yours?)
Other "experts" may pop up tomorrow.
HTH
I have plenty of power going to all other sensors and i have already checked the fuses all ok.
There are around 10 relays under the bonnet fuse box but im not sure weather im testing them right with the multimeter.
There is power going to the Fuel pump the wires goes to a regulator control valve, which makes a sound when ignition is turned on as if its priming.
I took the fuel pupe of the High pressure fuel pump going straight to the commom rail to see if any fuel comes out when turned over its trickles out but when started with abit of easy start it shoots out when engine runs.
I fort it was the crackshaft postion sensor wiring as its tototally dead which ignition on and turning over.
But the camshaft sensor on top of the engine as nearly 12v when ignition is switched on showing plenty of power.
Also when i said the AA couldnt not read the ECU he told me he as read many Trafic van and cant understand why he couldnt communicate with it.
So i phoned the mechanic who could read the ECU with his snap on diagnostic and now it will not read the ECU. But a few months back his tool worked fine which i cannot understand.
I was considering ordering a ECU kit off eBay and changing everything over but now you have told me about the crankshaft sensor not needing power i havent got a clue now.
worth starting from the power source as it happens at times the fuel cut off switch (inertia switch ) has it popped and with ign on check it has power both sides of the switch as some have had them fail mine popped and i only changed the cam belt took x mount of **** and tea to remember to press the switch :grin2: on my kangoo van
Ron
On your traffic is a inductive crankshaft sensor & as such does not require any input voltage. To do a basic test on this at the ecu pin no's 2g3 & 2h3 the ohms should be within the spec 200~1000 ohms at cranking using the same pin no's voltage should show approx. 1v ac also it's very important at key on you have 12v's at ecu pin no's 2m2
Check the fuel pump relay.
Sounds like the HP pump is faulty or not getting power.
Check also rail pressure sensor & associated wiring.
Loom over gearbox often fails.