DIAGNOSTIC PROCEDURE
DTC P0053, P0054, P0059, P0060 (MZI-3.7) 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 POWER SUPPLY IN
WIRING HARNESS
z
Disconnect the suspect HO2S
connector.
z
Perform the KOEO self-test.
z
Measure the voltage between the
suspect HO2S connector terminal A
and C, on the wiring harness side.
z
Is the voltage more than 10 V?
Yes Turn the ignition switch off. Go to the next step.
No Repair or replace suspected part, then go to step 9.
4
INSPECT HO2S HEATER FOR
SHORT TO GROUND
z
Disconnect the PCM.
z
Measure the resistance between
HO2S connector terminal A, the
wiring harness side, and body
ground.
Yes Go to the next step.
No
Repair or replace suspected part, Go to Step 9
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:34 AM
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