Posted by Simon Forsey on November 25, 2009, 6:56 am
Year of Manufacture *: 1998 Engine Code or CC *: 1MZ-FE ( Optional ) Scanner Used: Hanatech
This car has an intermittent fault light coming on, when scanned code P1346 VVT Range Performance Fault [B1]
The garage has already replaced the VVT solenoid on B1 and performed and engine flush.
I have had a scope on the crank and both cam sensors when the fault occurs and cannot see any thing wrong. I have triggered both VVT solenoids via the scan tool with a scope on them and these trigger OK.
The timing belt is correct and at the right tension.
I have had a visual look at the inside of the ECU.
Apart from there maybe a fault with the mechanical side of the VVT I am at a bit of a loss where to look next.