P0327 Sub Harness -Quick Fix-
06-24-2014 | 05:53 AM
#1
P0327 Sub Harness -Quick Fix-
Hey guys, I'm a tech at a Honda dealer and the other day I noticed my 2004 350z had a P0327 stored code, which quickly came back after being deleted. Knowing the OEM sensor was at least $100 but the sub harness was only $30 I wanted to try just replacing the sub harness, but the process of removing the manifolds and fuel system was tedious. So...
Our Master Tech and I took two long flat-head screwdrivers, bundled them up together with a homemade coat hanger hinge, and used the hinge as a point of flex to create a very long set of pliers out of two screwdrivers. Sorry that I do not have pictures...
Then with a light we went through the slot in the timing cover and, with a coat hanger, pulled on the wire towards the front of the vehicle while unplugging the connector at the Knock Sensor with the screwdriver pliers. Took a total of 30 seconds to get it unplugged. Next, I stuck a knife down behind the plenum and cut the tape connecting the knock harness and another harness together. Last, I lifted the vehicle up in the air and had easy access to the other harness plug underneath the coolant pipe behind the motor.
Knock sensor sub harness removed. After inspecting the harness I found corrosion near the factory taped up area inline of the sensor wire.
To install the new wire we attached the rear plug to a coat hanger stick and ran it through the timing cover hole and out the back underneath the plenum. Pull it through and then work the plug with the screwdriver pliers onto the knock sensor and seat the clip. Then lifted vehicle back up, reinstall rear plug and then I zip-tied the sub harness wire to another wire to prevent as much movement as possible.
P0327 Fixed. Wasn't the oem knock sensor, was just the harness. This process took a total of 15 minutes (we had the tools set up beforehand).
Hope this helps someone.
Our Master Tech and I took two long flat-head screwdrivers, bundled them up together with a homemade coat hanger hinge, and used the hinge as a point of flex to create a very long set of pliers out of two screwdrivers. Sorry that I do not have pictures...
Then with a light we went through the slot in the timing cover and, with a coat hanger, pulled on the wire towards the front of the vehicle while unplugging the connector at the Knock Sensor with the screwdriver pliers. Took a total of 30 seconds to get it unplugged. Next, I stuck a knife down behind the plenum and cut the tape connecting the knock harness and another harness together. Last, I lifted the vehicle up in the air and had easy access to the other harness plug underneath the coolant pipe behind the motor.
Knock sensor sub harness removed. After inspecting the harness I found corrosion near the factory taped up area inline of the sensor wire.
To install the new wire we attached the rear plug to a coat hanger stick and ran it through the timing cover hole and out the back underneath the plenum. Pull it through and then work the plug with the screwdriver pliers onto the knock sensor and seat the clip. Then lifted vehicle back up, reinstall rear plug and then I zip-tied the sub harness wire to another wire to prevent as much movement as possible.
P0327 Fixed. Wasn't the oem knock sensor, was just the harness. This process took a total of 15 minutes (we had the tools set up beforehand).
Hope this helps someone.
06-25-2014 | 05:29 AM
#4
New Member
Joined: Aug 2010
Posts: 23
Likes: 0
From: Germany
Hey guys, I'm a tech at a Honda dealer and the other day I noticed my 2004 350z had a P0327 stored code, which quickly came back after being deleted. Knowing the OEM sensor was at least $100 but the sub harness was only $30 I wanted to try just replacing the sub harness, but the process of removing the manifolds and fuel system was tedious. So...
Our Master Tech and I took two long flat-head screwdrivers, bundled them up together with a homemade coat hanger hinge, and used the hinge as a point of flex to create a very long set of pliers out of two screwdrivers. Sorry that I do not have pictures...
Then with a light we went through the slot in the timing cover and, with a coat hanger, pulled on the wire towards the front of the vehicle while unplugging the connector at the Knock Sensor with the screwdriver pliers. Took a total of 30 seconds to get it unplugged. Next, I stuck a knife down behind the plenum and cut the tape connecting the knock harness and another harness together. Last, I lifted the vehicle up in the air and had easy access to the other harness plug underneath the coolant pipe behind the motor.
Knock sensor sub harness removed. After inspecting the harness I found corrosion near the factory taped up area inline of the sensor wire.
To install the new wire we attached the rear plug to a coat hanger stick and ran it through the timing cover hole and out the back underneath the plenum. Pull it through and then work the plug with the screwdriver pliers onto the knock sensor and seat the clip. Then lifted vehicle back up, reinstall rear plug and then I zip-tied the sub harness wire to another wire to prevent as much movement as possible.
P0327 Fixed. Wasn't the oem knock sensor, was just the harness. This process took a total of 15 minutes (we had the tools set up beforehand).
Hope this helps someone.
Our Master Tech and I took two long flat-head screwdrivers, bundled them up together with a homemade coat hanger hinge, and used the hinge as a point of flex to create a very long set of pliers out of two screwdrivers. Sorry that I do not have pictures...
Then with a light we went through the slot in the timing cover and, with a coat hanger, pulled on the wire towards the front of the vehicle while unplugging the connector at the Knock Sensor with the screwdriver pliers. Took a total of 30 seconds to get it unplugged. Next, I stuck a knife down behind the plenum and cut the tape connecting the knock harness and another harness together. Last, I lifted the vehicle up in the air and had easy access to the other harness plug underneath the coolant pipe behind the motor.
Knock sensor sub harness removed. After inspecting the harness I found corrosion near the factory taped up area inline of the sensor wire.
To install the new wire we attached the rear plug to a coat hanger stick and ran it through the timing cover hole and out the back underneath the plenum. Pull it through and then work the plug with the screwdriver pliers onto the knock sensor and seat the clip. Then lifted vehicle back up, reinstall rear plug and then I zip-tied the sub harness wire to another wire to prevent as much movement as possible.
P0327 Fixed. Wasn't the oem knock sensor, was just the harness. This process took a total of 15 minutes (we had the tools set up beforehand).
Hope this helps someone.
10-29-2014 | 07:41 AM
#6
I'm about to attempt this so I dont have to take apart all this **** for a tiny little harness. I already habe the other end off and zip tied from months ago. Z is running a little wierd at top of 3rd, 4th, etc. I've had the z1 harness for a very long time...want to put it on to see if this resolves the issue. Thanks for the post
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