Can I get the fuel pump wiring diagram and the inertia switch location?

Hello,

Your vehicle does not have a fuel cut off switch/inertia switch.

This fuel system is equipped with two fuel pumps.
Transfer or pre-delivery pump fitted in the fuel tank and a high-pressure pump which is mechanically driven by the intake camshaft.

The transfer pump is controlled by the fuel pump control module located under the right rear seat near the access port for the in-tank fuel pump, see diagram in image 1
Pin 7, red/black wire is the 12V supply.
Pin 6, brown wire is ground.

12V and ground can be checked with a test light or voltmeter.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester
and
https://www.2carpros.com/articles/how-to-use-a-voltmeter

Image 2 shows the low-pressure fuel system layout, showing in tank fuel pump G6 and fuel pump control module J538.

What is wrong with your vehicle? Crank and non-start? Starting but poor running/no power?

A common issue is a failed/worn cam follower which drives the mechanical high pressure fuel pump.

https://youtu.be/wUP9xhHQk8E

Also see image three below.

Are there any fault codes stored in the engine management system?
I would suggest to first carry out a CAN-scan and post any fault codes here so that we can evaluate and advise accordingly.

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Hope this helps.

Cheers, Boris