Mazda CX-9 Grand Touring 2009 Manual page 910

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
DIAGNOSTIC PROCEDURE
DTC P0053, P0054, P0059, P0060 (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP INSPECTION
VERIFY FREEZE FRAME DATA
HAS BEEN RECORDED
1
Has FREEZE FRAME DATA been
recorded?
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins
2
and/or on-line repair information
availability.
Is any related Service Bulletins
available?
INSPECT FOR POWER SUPPLY IN
WIRING HARNESS
Disconnect the suspect HO2S
connector.
3
Perform the KOEO self-test.
Measure the voltage between the
suspect HO2S connector terminal A
and C, on the wiring harness side.
Is the voltage more than 10 V?
INSPECT HO2S HEATER FOR
SHORT TO GROUND
Disconnect the PCM.
4
Measure the resistance between
HO2S connector terminal A, the
wiring harness side, and body
ground.
2008 Mazda CX-9 Grand Touring
Yes Go to the next step.
Record FREEZE FRAME DATA on the repair
No
Perform repair or diagnosis according to the
available Service Bulletins.
Yes
No
Yes Turn the ignition switch off. Go to the next step.
No Repair or replace suspected part, then go to step 9.
Yes Go to the next step.
No Repair or replace suspected part, Go to Step 9
ACTION
order, then go to the next step.
If the vehicle is not repaired, go to the next
step.
Go to the next step.