14
GROUND
z
Measure the resistance between:
{
HO2S terminal A and D at
component side
{
HO2S terminal A at component
side and battery negative terminal
z
Is the resistance more than 10 kilohms?
No
Replace the HO2S.
(See
FRONT HEATED OXYGEN SENSOR
(HO2S) REMOVAL/INSTALLATION
[MZI-3.7]
.)
(See
REAR HEATED OXYGEN SENSOR
(HO2S) REMOVAL/INSTALLATION
[MZI-3.7]
.)
Then go to Step 17.
15
INSPECT HO2S
z
For DTC P0133 Inspect the front HO2S
(RH)
z
For DTC P0139 Inspect the rear HO2S
(RH)
z
For DTC P0153 Inspect the front HO2S
(LH)
z
For DTC P0159 Inspect the rear HO2S
(LH)
(See
FRONT HEATED OXYGEN
SENSOR (HO2S) INSPECTION
[MZI-3.7]
.)
(See
REAR HEATED OXYGEN
SENSOR (HO2S) INSPECTION
[MZI-3.7]
.)
z
Is there any malfunction?
Yes
Replace the HO2S.
(See
FRONT HEATED OXYGEN SENSOR
(HO2S) REMOVAL/INSTALLATION
[MZI-3.7]
.)
(See
REAR HEATED OXYGEN SENSOR
(HO2S) REMOVAL/INSTALLATION
[MZI-3.7]
.)
Then go to Step 17.
No
Go to the next step.
16
INSPECT FOR CORRECT PCM
OPERATION
z
Disconnect all the PCM connectors.
z
Visually inspect for:
{
Pushed out pins
{
Corrosion
z
Connect all the PCM connectors and
verify that they seat correctly.
z
Retrieve DTCs using the M-MDS.
z
Is the PENDING CODE for this DTC
present?
Yes Go to the next step.
No
The system is correctly. Go to the next step.
VERIFY TROUBLESHOOTING OF
MISFIRE DTC HAS BEEN COMPLETED
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:35 AM
Page 95
© 2005 Mitchell Repair Information Company, LLC.
