Hello Nceba Maqaqa,
We do not have a Toyota Avanza
in the USA Market
Looks to be a van/wagon style
perhaps or Venza
would be close... (??).
In any case: IF...
the mechanical job (crank-shaft job) is related
to this incident... you NEED to be looking inside your engine compartment... for physical damage to your wiring
POSSIBLY Your "MECHANIC"
snagged a couple
of wires when pulling the engine ...
did a shabby job
of repairing them..
(the shabbier the BETTER... EASY
A real "MECHANIC
" would welcome the opportunity
to make sure you are a COMPLETELY SATISFIED
customer... Give that a try first.
ASK if there were any wiring "incidents" during the procedure
You are left with tracing and toning out the wires: power distribution & possible FAN & RADIO cross-overs
wires is a relatively EASY PROCEDURE...
(I use Klein tools
- don't have time to mess with toys).
You do need wiring schematics... and you do need to
OPEN the circuit you are tracing (open
= pull the fuse
the wire... (recommend FACTORY drawing).
2015 American market Toyota Venza
drawings... are available FREE on BBB Industries site
(below)... REGISTRATION is required.
On the TYPICAL "entertainment
" drawings found
for your year there are at least 3 and often 4 POWER
fuse circuits needed for your RADIO to function.
One (often two BATTERY sources, an accessory battery & an ignition battery.
I see no OPPORTUNITY for an EASY explanation
of your fan operating & radio NOT working... but
my first BACK
trace would be of the FAN POWER
that logically would explain the fan
symptom you described.
Hope this helps
BBB Industries Premium Alternators Starters Power Steering Products
Extech TG20 Wire Tracer and Tone Generator Amazon com
Bussman fuse test & kit (
$14.26 + FREE
Amazon com Bussmann NO 43 ATM Mini Blade Fuse Tester Puller Kit Automotive
Carnac the Magnificent