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Old 11-21-2002, 01:52 PM
dordal dordal is offline
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Join Date: Jul 2002
Posts: 30
Thanks. I was about to do that myself. The codes (on pin 8 of the diagnostic box) are:

9 - 02 sensor voltage too high
11- 02 sensor heater amps too high/shorted

I've attached a pic of the connector under the passenger seat. Does anyone know what the pinouts for the heater connector are supposed to be? I get a continuty to ground on the brown wire, 96 ohms to ground on the black wire and 4 ohms to ground on the blue/green wire. As I mentioned, its an open circuit to the same blue/green wire on pin 7 of the fuel pump relay (where the heater is connected), even though that pin also has 9 ohms of continuity to ground.

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W124 O2 Sensor Problem-o2-wire-sensor.jpg  
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