12-12-2014, 10:34 PM
I'm so happy for you, ! getting it to run right.
I am glad to help you.
I look at the o2 sensor , there on top of the exhaust manifold and yours is missing. oops.
there was a connector with a harness to the rear.
the FSM book has harness views at the end, of book ,but i dont have them.
the 02 wire(s) colors very by makers (bosch ,denso,etc) decisions.
but the harness wires are suzuki coolers.
it's just 1 Red wire, to ECU pin A19 The casing of the sensor forms the other connection, ground.
Most 1990s have just one wire, no heater.
I have a schematic here, (with comment flags) see page 3
it's a single RED wire and connnector.
http://www.fixkick.com/ECU/89/1990-scan-...lpages.pdf
the BOSCH pn is 12050
the connector is round, and very unique in the world of suzuki connectors.
![[Image: 3_12_12_14_12_34_05.jpeg]](http://www.fixkick.com/bbs2/Suzuki-bbs/gallery/3_12_12_14_12_34_05.jpeg)
this is 1991 (i dont have 90 photos at all) the harness behind the master brake cylinder hides this connector on 1991.
![[Image: 3_12_12_14_12_14_06.jpeg]](http://www.fixkick.com/bbs2/Suzuki-bbs/gallery/3_12_12_14_12_14_06.jpeg)
I am glad to help you.
I look at the o2 sensor , there on top of the exhaust manifold and yours is missing. oops.
there was a connector with a harness to the rear.
the FSM book has harness views at the end, of book ,but i dont have them.
the 02 wire(s) colors very by makers (bosch ,denso,etc) decisions.
but the harness wires are suzuki coolers.
it's just 1 Red wire, to ECU pin A19 The casing of the sensor forms the other connection, ground.
Most 1990s have just one wire, no heater.
I have a schematic here, (with comment flags) see page 3
it's a single RED wire and connnector.
http://www.fixkick.com/ECU/89/1990-scan-...lpages.pdf
the BOSCH pn is 12050
the connector is round, and very unique in the world of suzuki connectors.
this is 1991 (i dont have 90 photos at all) the harness behind the master brake cylinder hides this connector on 1991.
http://www.fixkick.com