DIAGNOSTIC PROCEDURE
DTC P0135, P0141, P0155, P0161 (MZI-3.5) DIAGNOSTIC PROCEDURE
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
z
Has FREEZE FRAME DATA
been recorded?
Yes
Go to the next step.
No
Record FREEZE FRAME DATA on the
repair order, then go to the next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins
and/or on-line repair information
availability.
z
Is any related Service Bulletins
available?
Yes
Perform repair or diagnosis according to
the available Service Bulletins.
z
If the vehicle is not repaired, go to
the next step.
No
Go to the next step.
3
INSPECT FOR SOURCE OF
POTENTIAL HO2S
CONTAMINATION
z
Investigate the following items as
potential sources of HO2S
contamination:
{
Use of unapproved silicon
sealers
{
Fuel contaminated by
silicon additives
{
Excessive oil consumption
{
Glycol leaking internally in
the engine
{
Lead-contaminated fuel
{
Short drive cycles in cold
weather
{
Use of unapproved cleaning
agents
z
Is a concern present?
Yes
Repair the source of the contamination.
Change the engine oil and oil filter. Then
go to the next step.
No
Go to the next step.
4
VISUALLY INSPECT HO2S
WIRING HARNESS
z
Connect the PCM connector.
z
Visually inspect the HO2S wiring
harness for exposed wiring water
contamination, corrosion, and
Yes
Repair or replace suspected part, Then go
to Step 12.
No
Go to the next step.
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:26:30 AM
Page 101
© 2005 Mitchell Repair Information Company, LLC.
