My 2013 Triton has developed a charging issue that I've been unable to troubleshoot.
My first thought was that it would be the battery, as it was pretty old. I already had a new battery (less than 2 weeks old), so I installed it.
The battery voltage was 12.8V regardless of whether the engine was running or not.
After checking the "ALT" fusable link was OK I ordered an alternator from a wreckers.
I've installed the replacement (I can't call it "new", but it was off another 2013 which was reported as having driven 124k) ... same outcome (no voltage increase when the engine is running).
With the ignition off, the battery is sitting at 12.8V. I've checked the "B" terminal on the battery ... also 12.8V.
The alternator's regulator plug only has two wires (manual transmission) ... 12.4V on the "always on" terminal, 0V on the (switched) "warning light" terminal (this is with the plug removed from the alternator).
With the ignition on, the only thing that changes is the "warning light" terminal goes to 11.8V.
With the regulator plug back on the alternator and the engine running, the voltage at the battery drops to 12.2V.
So, are both alternators (original and the one from the wreckers) faulty, or could there be a problem elsewhere?
TIA,
J.