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Hondata, Inc.
2840 Columbia St
Torrance, CA 90503
 

PLX Wideband Wiring Instructions

Remove the stock oxygen sensor and install the wideband O2 sensor.

Closed/Open Loop - Wideband readings datalogged in S-Manager:

  • Red wire Power cables for the PLX wideband - connect to switched power in the fuse box
  • Black Ground - Attach to solid chassis ground (best location is the thermostat housing)
  • White 0-5V Output from wideband - connect to ELD input making sure that the ELD is no longer connected to it (ELD is pin D10 on an OBD1 ECU)
  • Gray 0-1V Output for narrowband - connect to the O2 input on ECU pin D14 (This is not necessary if you run in closed loop off of the Wideband signal)
  • Some ECU's may need to have resistors R136 and R138 removed to improve wideband reading accuracy in the software.
  • Disable the O2 heater in the closed loop parameters.

S-Manager Setup

In Parameters go to Closed Loop, click on the Wideband Lambda input source select the source you wish to use.  You must choose the source based on how you have wired the Wideband into the ECU.  If the wideband display reads different than the datalogged readings, then use the voltage offset field to enter either a negative or positive voltage until they match.

 

 

Copyright 2015 Hondata, Inc. All rights reserved. Warranty Information
Products not legal for sale or use in California on any pollution controlled motor vehicles.