Craftsman 3130eSC Manual De Usuario

 

 

 

 

 

®

 

  Use the UP 

 and  DOWN 

 buttons, 

as necessary, to highlight System 
Tests, then press the ENTER 

 button. 

„

 

The System Test menu displays. 

OBD2 regulations require that applicable vehicles monitor and test operation 
of the oxygen (O2) sensors to identify problems that can affect fuel 
efficiency and vehicle emissions. These tests are performed automatically 
when engine operating conditions are within predefined limits. Results of 
these tests are stored in the on-board computer's memory. 

The  O2 Sensor Test function lets you retrieve and view O2 sensor 
monitor test results for the most recently completed tests from your 
vehicle's on-board computer. 

Vehicles are equipped with multiple O2 sensors. O2 sensors are installed 
both upstream of (before) and downstream of (after) the exhaust system 
Catalytic Converters. The name of an O2 sensor identifies its location in the 
exhaust system. The name of each O2 sensor is made up of three parts: 

O2S  XX  YY  -or-  O2S  X  Y 

„

 

O2S - this is the basic designation for all O2 sensors. 

„

 

X or XX - These characters identify the location of the O2 sensor in 
relation to a cylinder bank. An O2 sensor for cylinder bank 1 is 
identified by the designation “1” or "B1"; a sensor for cylinder bank 2 
is identified as “2” or "B2." 

„

 

Y or YY - These characters identity the location of the O2 sensor in 
relation to the exhaust system catalyst. An O2 sensor located upstream 
of the catalyst is identified by the designation”1” or "S1", a sensor lo-
cated downstream of the Catalytic Converter is identified as “2” or "S2." 

For example, O2S12 or O2SB1S2 is the designation for the 
downstream O2 sensor for cylinder bank 1. 

  From the System Test menu, use the 

UP 

 and  DOWN 

 buttons,  as 

necessary, to highlight O2 Sensor Test, 
then press the ENTER 

 button.