I'm trying to test the O2 sensors on my '97 which are Denso and have this wiring coloration (pulled from an old thread):
O2 wire Color Codes: Denso 4 wire sensors use the following code:
Blue = signal wire
Black = heater wire (non polarity)
Black = heater wire 2 (non polarity)
White = Aux Ground
Question: Does the Blue wire correspond with +B and the White with HT? This from page EG-167 in the FSM.
Testing across these wires there is no change with resistance. Testing across the two Black wires gives resistance within the acceptable range.
O2 wire Color Codes: Denso 4 wire sensors use the following code:
Blue = signal wire
Black = heater wire (non polarity)
Black = heater wire 2 (non polarity)
White = Aux Ground
Question: Does the Blue wire correspond with +B and the White with HT? This from page EG-167 in the FSM.
Testing across these wires there is no change with resistance. Testing across the two Black wires gives resistance within the acceptable range.
