No charge voltage to battery. New alternator. No turn signals. This vehicle lost charging when towing trailer.
Troubleshoot by isolating the alternator, then testing for a 13.5 - 16v output (likely to be ~14.5v). Anything out of that range indicates bad alternator or voltage regulator (assumed to be built into the alternator). If voltage is in range, (and following your suspicion of an electrical problem in the Turn Signal circuit), reconnect the alternator and isolate the turn signal circuit by pull the fuses. See if you are getting the good voltage reading of (~14.5v) at the battery. IF IT'S GOOD..check for bad trailing wiring harness (isolate if possible), I've seen bad turn signal bulbs (contacts on bottom of bulb) short out (melt) in their sockets (typically causing a blown fuse..but ya'never know), and lastly you might have to do a hand over hand following the wiring, looking for shorts, melted wire, cuts, broken connections, etc (see Hanes Manual Wiring diagrams for possible points to perform continuity checks). IF IT'S BAD. you must continue to isolate electrical circuits until you find the one that is causing the fault. You can pull one fuse at a time (not reinstalling them) until voltage at the battery returns, or you might try pulling a group of fuses at a time until you can read good voltage at the battery, then replace the fuses one at a time until you find the bad circuit. Once you've isolated the bad circuit, it's either a matter of further isolation until you find the bad component (many circuits supply voltage to multiple components), or checking every connection and component connected in the circuit. Best of luck resolving this problem.
Dec 10, 2013 |
2006 Toyota 4Runner