2007 hilux 2.5 diesel Alternator.

2007 TOYOTA
50,000 MILES • 4 CYL • 4WD • MANUAL
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DIRKIE
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Hi there

I do not get power to the back of my alternator at the connector with the 4 wires, red/blue, grey, green and white(which i think is negative) I have checked the fuse box and it's good. Can not follow the wiring as it changed colour on the way to the fuse box.
If you can please advice?
regards
Dirk
Jun 13, 2011 at 5:46 AM
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RASMATAZ
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Check battery terminal on the alternator if it has power also check all the fusible links
Jun 13, 2011 at 6:03 AM
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DIRKIE
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Hi rasmataz
Battery terminal on alternator has got power, 12,6V. Can not see any fusible link in harness. Don't think toyota use any.
Jun 13, 2011 at 6:09 AM
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KHLOW2008
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We do not have the wiring schematics for your vehicle in our database so it is not possible to show you what color wires to check. If the battery main terminal has 12.6 volts with engine running, it is not charging sufficiently.

No negative wires are used. The White should be positive that is hot at all times and the fuse should be underhood fuse box, most likely labelled as ALT-S.

As to the other wires, one should be from the ignition switch, one for the indicator light and the other to the engine ECU.
Jun 13, 2011 at 3:57 PM