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1994 Honda Civic IAT sensor power supply

Tiny
ED POMAR
  • MEMBER
  • 1994 HONDA CIVIC
Electrical problem
1994 Honda Civic 4 cyl Front Wheel Drive Manual

I have checked the IAT sensor for voltage readings but no voltage, where will I find the power source, according to the manual there should be 5 volts
Saturday, September 25th, 2010 AT 5:13 AM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The 5 volts power source comes from computer connector D- D22 SG with the green and white wire-also powers the TPS, CTS and Heated Oxygen Sensor
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Saturday, September 25th, 2010 AT 5:35 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Pin 16 at the datalink connector should be hot all the time, is it? If no voltage, check the fuse, rdo--cluster--misc fuse, 10 amp in the fuse box. My info shows a security system on your vehicle, I probably can't track that from here.

The purple wire at the starter solenoid S terminal, should be hot with the key in the crank position, if it isn't hot, backtrack the circuit. Any testing make sure the tranny is in park or neutral and the e-brake is set.
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Wednesday, November 3rd, 2010 AT 3:21 PM

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