2017 Toyota Yaris iA stalls and no start diag

Customer complaint: No start at time and occasionally stalls.
Previous repair work: Don't know but we do know the Ford dealership sold the car and couldn't find the issue when the customer brought it back to them.

Spoilers below


Codes: u0100, u0115, u0121, u0131, u0151, B10E7, C1031
Key codes to focus on: B10E7 - Ignition 1 Relay (Failure Type 16)
Test to perform. Verify we have full battery voltage getting into and out of the IG1 relay and the IG1 fuses.

Test results: Main 200A fuse was good, power to the IG1 fuse was bad, tested at the relay input and had good power, tested at the relay output and power was bad. We had 12V going in and 1-3V coming out. If the relay was manipulated it would sometimes work and have good power output.

Cause: Failed IG relay
Correction: Replace the IG relay, clear memories and retest system.