No, when return, you should wait for the bus at the overhead
bridge landing, just beside Jusco. Don't go back
to the same old place where you get down from the bus you take from
JB. Due to some road curbs, the bus will travel one way when you
arrive at Jusco, the buses will use another route went heading to
JB. Therefore, you are advised to wait at the overhead
bridge landing beside Jusco for the return bus.
Alternatively, you may like to walk to the carpark behind Jusco,
until you reach the Shell Station, around there you will see a
coffeeshop, known as Restoran Kok Hoow or Kedai Kopi Kok Hoow, wait
a the roadside, just beside the Jusco carpark and opposite Kok Hoow
for the bus to JB.
Bus drivers would prefer to use Jalan Lingkaran Dalam, followed by
Jalan Ayer Molek and enter the city at the post office there. After
the post office, the bus will procced to opposite Caltex
bus stop, a.k.a bus stop BESIDE City
Square, this bus stop is for Eastern buses. ( Note that PJ is located in
the Eastern side )
As for the bus stop opposite City Square, I
assumed the one along Jalan Wong Ah Fook ( the one way street ),
NOT the one between KTM and Caltex right? Well,
that bus stop is for the Western
side buses. So, you won't be able to take buses to PJ from there.
Unless, the PJ bus enters JB directly thru Caltex,
and make a right turn at Jalan Stesen ( in front of KTM ), thus,
the PJ bus will end up in Jalan Wong Ah Fook, where the Western bus
stop is located. But better don't try your luck there, should go to
the Eastern bus stop instead.
As for buses heading to Larkin, the bus drivers can choose to call
along either the Eastern or the Western bus stop.