P1500 Alternator FR Terminal circuit.

Tiny
MOYFI
  • MEMBER
  • 2002 MITSUBISHI MIRAGE
  • 156,000 MILES
I already changed the alternator, and the problem persist. There is no charge for the battery
Wednesday, April 24th, 2013 AT 8:43 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Could be problem with computer?

Start engine and allow it to idle. Ensure radiator fan--headlights--rear defogger and stop lites are off. Do not disconnect generator 4-pin connector. Backprobe and measure voltage between ground and generator field connector terminal no. 4. In sequence, turn headlites--rear defogger and stop lamps on. Voltage should drop when electrical loads are applied to generator. If voltaghe reading does drop, replace pcm.

Are you sure battery and generator wiring circuits are ok?
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Wednesday, April 24th, 2013 AT 9:25 AM

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