Mazda CX-9 Grand Touring 2009 Manual page 902

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
available?
INSPECT OCV (LH) CONNECTOR
FOR POOR CONNECTION
Turn the ignition switch off.
3
Disconnect the OCV (LH) connector.
Inspect for poor connection (such as
damaged/pulled-out pins, corrosion).
Are there any malfunction?
INSPECT OCV (LH)
Inspect the OCV (LH).
4
(See OIL CONTROL VALVE
(OCV) INSPECTION [MZI-3.7] .)
Is there any malfunction?
INSPECT OCV (LH) CIRCUIT FOR
OPEN CIRCUIT
Turn the ignition switch to the ON
position (Engine off).
5
Measure the voltage between the OCV
(LH) connector terminal A (wiring
harness-side) and body ground.
Is the voltage B+?
INSPECT OCV (LH) CIRCUIT FOR
SHORT TO POWER SUPPLY
Disconnect the PCM connector.
Turn the ignition switch to the ON
6
position (Engine off).
Measure the voltage between the OCV
(LH) connector terminal B and body
ground.
Is the voltage B+?
INSPECT OCV (LH) CIRCUIT FOR
SHORT TO GROUND
Turn the ignition switch to the ON
7
position (Engine off).
Inspect for continuity between OCV
(LH) terminal B (wiring harness-side)
and body ground.
2008 Mazda CX-9 Grand Touring
No
Repair or replace suspected part, then go to Step
Yes
10.
No
Replace the OCV (LH), then go to Step 10. (See
Yes OIL CONTROL VALVE (OCV)
REMOVAL/INSTALLATION [MZI-3.7] .)
No
Yes Go to the next step.
Repair or replace suspected part, then go to Step
No
Repair or replace suspected part, then go to Step
Yes
10.
No
Repair or replace suspected part, then go to Step
Yes
10.
Go to the next step.
Go to the next step.
Go to the next step.
10.
Go to the next step.