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Old 10-08-2012, 11:42 PM   #1
Russ Jerome
Scooby Newbie
Member#: 255397
Join Date: Aug 2010
Location: Milwaukee WI
2003 Multiple

Default What ECM pin feeds ground to front O2?

People have posted scans of pinouts but they are expired, simple pin location would help greatly. No ground feed to front o2, heater code with good power feed but weak (6v) ground side (no load, dvm).

Edit, correct answer is:

Connector "D" has pins for front O2 sensor:

Sensor + D19
Sensor - D29
Heater 1/2 is D4 and D5.

Disregard colors as they change between ECM and underhood connector.
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Last edited by Russ Jerome; 10-09-2012 at 11:30 PM.
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