4. Remove the HO2S (RH) using the SST.
5. Install in the reverse order of removal.
Fig. 26: View Of HO2S, SST & Torque Specifications
Courtesy of MAZDA MOTORS CORP.
FRONT HEATED OXYGEN SENSOR (HO2S) INSPECTION [MZI-3.7]
FRONT HEATED OXYGEN SENSOR (HO2S) VOLTAGE INSPECTION
1. Warm up the engine to normal operating temperature.
2. Using the M-MDS, monitor the following:
{
Vehicle speed (PID: VSS)
{
Engine speed (PID: RPM)
{
Front HO2S voltage (PID: O2S11, O2S21)
3. Drive the vehicle and decelerate the engine speed by releasing the accelerator pedal fully when the engine
speed is
3,000 rpm or more.
4. Verify that the front H02S outputs a voltage of
0.6 V or more
, one time or more, then verify that the
front HO2S voltage (PID: O2S11, O2S21) is
0.3 V is or less
while decelerating as shown in the figure.
NOTE:
z
Apply a light coat of anti-seize lubricant to the threads of the HO2S.
NOTE:
z
Before performing the following inspection, make sure to follow the
procedure as indicated in the troubleshooting flowchart. (See HOW TO
USE THIS MANUAL .)
2008 Mazda CX-9 Grand Touring
2008 ENGINE Control System (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:07:19 AM
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© 2005 Mitchell Repair Information Company, LLC.
